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2016-08-06Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf updates from Ingo Molnar: "Mostly tooling fixes and some late tooling updates, plus two perf related printk message fixes" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf tests bpf: Use SyS_epoll_wait alias perf tests: objdump output can contain multi byte chunks perf record: Add --sample-cpu option perf hists: Introduce output_resort_cb method perf tools: Move config/Makefile into Makefile.config perf tests: Add test for bitmap_scnprintf function tools lib: Add bitmap_and function tools lib: Add bitmap_scnprintf function tools lib: Add bitmap_alloc function tools lib traceevent: Ignore generated library files perf tools: Fix build failure on perl script context perf/core: Change log level for duration warning to KERN_INFO perf annotate: Plug filename string leak perf annotate: Introduce strerror for handling symbol__disassemble() errors perf annotate: Rename symbol__annotate() to symbol__disassemble() perf/x86: Modify error message in virtualized environment perf target: str_error_r() always returns the buffer it receives perf annotate: Use pipe + fork instead of popen perf evsel: Introduce constructor for cycles event
2016-08-05Merge tag 'ntb-4.8' of git://github.com/jonmason/ntbLinus Torvalds
Pull NTB updates from Jon Mason: "NTB bug fixes for the ntb_tool and ntb_perf, and improvements to the ntb_perf and ntb_pingpong for increased debugability. Also, modification to the ntb_transport layer to increase/decrease the number of transport entries depending on the ring size" * tag 'ntb-4.8' of git://github.com/jonmason/ntb: NTB: ntb_hw_intel: use local variable pdev NTB: ntb_hw_intel: show BAR size in debugfs info ntb_test: Add a selftest script for the NTB subsystem ntb_perf: clear link_is_up flag when the link goes down. ntb_pingpong: Add a debugfs file to get the ping count ntb_tool: Add link status and files to debugfs ntb_tool: Postpone memory window initialization for the user ntb_perf: Wait for link before running test ntb_perf: Return results by reading the run file ntb_perf: Improve thread handling to increase robustness ntb_perf: Schedule based on time not on performance ntb_transport: Check the number of spads the hardware supports ntb_tool: Add memory window debug support ntb_perf: Allow limiting the size of the memory windows NTB: allocate number transport entries depending on size of ring size ntb_tool: BUG: Ensure the buffer size is large enough to return all spads ntb_tool: Fix infinite loop bug when writing spad/peer_spad file
2016-08-05ntb_test: Add a selftest script for the NTB subsystemLogan Gunthorpe
This script automates testing doorbells, scratchpads and memory windows for an NTB device. It can be run locally, with the NTB looped back to the same host or use SSH to remotely control the second host. In the single host case, the script just needs to be passed two arguments: a PCI ID for each side of the link. In the two host case the -r option must be used to specify the remote hostname (which must be SSH accessible and should probably have ssh-keys exchanged). A sample run looks like this: $ sudo ./ntb_test.sh 0000:03:00.1 0000:83:00.1 -p 29 Starting ntb_tool tests... Running link tests on: 0000:03:00.1 / 0000:83:00.1 Passed Running link tests on: 0000:83:00.1 / 0000:03:00.1 Passed Running db tests on: 0000:03:00.1 / 0000:83:00.1 Passed Running db tests on: 0000:83:00.1 / 0000:03:00.1 Passed Running spad tests on: 0000:03:00.1 / 0000:83:00.1 Passed Running spad tests on: 0000:83:00.1 / 0000:03:00.1 Passed Running mw0 tests on: 0000:03:00.1 / 0000:83:00.1 Passed Running mw0 tests on: 0000:83:00.1 / 0000:03:00.1 Passed Running mw1 tests on: 0000:03:00.1 / 0000:83:00.1 Passed Running mw1 tests on: 0000:83:00.1 / 0000:03:00.1 Passed Starting ntb_pingpong tests... Running ping pong tests on: 0000:03:00.1 / 0000:83:00.1 Passed Starting ntb_perf tests... Running local perf test without DMA 0: copied 536870912 bytes in 164453 usecs, 3264 MBytes/s Passed Running remote perf test without DMA 0: copied 536870912 bytes in 164453 usecs, 3264 MBytes/s Passed Signed-off-by: Logan Gunthorpe <logang@deltatee.com> Acked-by: Shuah Khan <shuahkh@osg.samsung.com> Acked-by: Allen Hubbe <Allen.Hubbe@emc.com> Signed-off-by: Jon Mason <jdmason@kudzu.us>
2016-08-05Merge tag 'rtc-4.8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux Pull RTC updates from Alexandre Belloni: "RTC for 4.8 Cleanups: - huge cleanup of rtc-generic and char/genrtc this allowed to cleanup rtc-cmos, rtc-sh, rtc-m68k, rtc-powerpc and rtc-parisc - move mn10300 to rtc-cmos Subsystem: - fix wakealarms after hibernate - multiples fixes for rctest - simplify implementations of .read_alarm New drivers: - Maxim MAX6916 Drivers: - ds1307: fix weekday - m41t80: add wakeup support - pcf85063: add support for PCF85063A variant - rv8803: extend i2c fix and other fixes - s35390a: fix alarm reading, this fixes instant reboot after shutdown for QNAP TS-41x - s3c: clock fixes" * tag 'rtc-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/abelloni/linux: (65 commits) rtc: rv8803: Clear V1F when setting the time rtc: rv8803: Stop the clock while setting the time rtc: rv8803: Always apply the I²C workaround rtc: rv8803: Fix read day of week rtc: rv8803: Remove the check for valid time rtc: rv8803: Kconfig: Indicate rx8900 support rtc: asm9260: remove .owner field for driver rtc: at91sam9: Fix missing spin_lock_init() rtc: m41t80: add suspend handlers for alarm IRQ rtc: m41t80: make it a real error message rtc: pcf85063: Add support for the PCF85063A device rtc: pcf85063: fix year range rtc: hym8563: in .read_alarm set .tm_sec to 0 to signal minute accuracy rtc: explicitly set tm_sec = 0 for drivers with minute accurancy rtc: s3c: Add s3c_rtc_{enable/disable}_clk in s3c_rtc_setfreq() rtc: s3c: Remove unnecessary call to disable already disabled clock rtc: abx80x: use devm_add_action_or_reset() rtc: m41t80: use devm_add_action_or_reset() rtc: fix a typo and reduce three empty lines to one rtc: s35390a: improve two comments in .set_alarm ...
2016-08-04Merge tag 'perf-core-for-mingo-20160803' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull perf/core improvements and fixes from Arnaldo Carvalho de Melo: New features: - Add --sample-cpu to 'perf record', to explicitely ask for sampling the CPU (Jiri Olsa) Fixes: - Fix processing of multi byte chunks in objdump output, fixing disassemble processing for annotation on at least ARM64 (Jan Stancek) - Use SyS_epoll_wait in a BPF 'perf test' entry instead of sys_epoll_wait, that is not present in the DWARF info in vmlinux files (Arnaldo Carvalho de Melo) - Add -wno-shadow when processing files using perl headers, fixing the build on Fedora Rawhide and Arch Linux (Namhyung Kim) Infrastructure changes: - Annotate prep work to better catch and report errors related to using objdump to disassemble DSOs (Arnaldo Carvalho de Melo) - Add 'alloc', 'scnprintf' and 'and' methods for bitmap processing (Jiri Olsa) - Add nested output resorting callback in hists processing (Jiri Olsa) Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-08-03perf tests bpf: Use SyS_epoll_wait aliasArnaldo Carvalho de Melo
Something made the sys_epoll_wait() function alias not to be found in the vmlinux DWARF info, being found only in /proc/kallsyms, which made the BPF perf tests to fail: [root@jouet ~]# perf test BPF 37: Test BPF filter : 37.1: Test basic BPF filtering : FAILED! 37.2: Test BPF prologue generation : Skip 37.3: Test BPF relocation checker : Skip [root@jouet ~]# Using -v we can see it is failing to find DWARF info for the probed function, sys_epoll_wait, which we can find in /proc/kallsyms but not in vmlinux with CONFIG_DEBUG_INFO: [root@jouet ~]# grep -w sys_epoll_wait /proc/kallsyms ffffffffbd295b50 T sys_epoll_wait [root@jouet ~]# [root@jouet ~]# readelf -wi /lib/modules/4.7.0+/build/vmlinux | grep -w sys_epoll_wait [root@jouet ~]# If we try to use perf probe: [root@jouet ~]# perf probe sys_epoll_wait Failed to find debug information for address ffffffffbd295b50 Probe point 'sys_epoll_wait' not found. Error: Failed to add events. [root@jouet ~]# It all works if we use SyS_epoll_wait, that is just an alias to the probed function: [root@jouet ~]# grep -i sys_epoll_wait /proc/kallsyms ffffffffbd295b50 T SyS_epoll_wait ffffffffbd295b50 T sys_epoll_wait [root@jouet ~]# So use it: [root@jouet ~]# perf test BPF 37: Test BPF filter : 37.1: Test basic BPF filtering : Ok 37.2: Test BPF prologue generation : Ok 37.3: Test BPF relocation checker : Ok [root@jouet ~]# Further info: [root@jouet ~]# gcc --version gcc (GCC) 6.1.1 20160621 (Red Hat 6.1.1-3) [acme@jouet linux]$ cat /etc/fedora-release Fedora release 24 (Twenty Four) Investigation as to why it fails is still underway, but it was always going from sys_epoll_wait to SyS_epoll_wait when looking up the DWARF info in vmlinux, and this is what is breaking now. Switching to use SyS_epoll_wait allows this test to proceed and test the BPF code it was designed for, so lets have this in to allow passing this test while we fix the root cause. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexei Starovoitov <alexei.starovoitov@gmail.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-7hekjp0bodwjbb419sl2b55h@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-08-02tools/testing/radix-tree/linux/gfp.h: fix bitrotted valueValdis Kletnieks
Apparently, the tools/testing version dates to a few flags ago, and we've sprouted 4 new ones since. Keep in sync with the value in the main tree... Link: http://lkml.kernel.org/r/23400.1469702675@turing-police.cc.vt.edu Signed-off-by: Valdis Kletnieks <valdis.kletnieks@vt.edu> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-08-02perf tests: objdump output can contain multi byte chunksJan Stancek
objdump's raw insn output can vary across architectures on the number of bytes per chunk (bpc) displayed and their endianness. The code-reading test relied on reading objdump output as 1 bpc. Kaixu Xia reported test failure on ARM64, where objdump displays 4 bpc: 70c48: f90027bf str xzr, [x29,#72] 70c4c: 91224000 add x0, x0, #0x890 70c50: f90023a0 str x0, [x29,#64] This patch adds support to read raw insn output for any bpc length. In case of 2+ bpc it also guesses objdump's display endian. Reported-and-Tested-by: Kaixu Xia <xiakaixu@huawei.com> Signed-off-by: Jan Stancek <jstancek@redhat.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Corey Ashford <cjashfor@linux.vnet.ibm.com> Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/07f0f7bcbda78deb423298708ef9b6a54d6b92bd.1452592712.git.jstancek@redhat.com [ Fix up pr_fmt() call to use %zd for size_t variables, fixing the build on Ubuntu cross-compiling to armhf and ppc64 ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-08-02perf record: Add --sample-cpu optionJiri Olsa
Adding --sample-cpu option to be able to explicitly enable CPU sample type. Currently it's only enable implicitly in case the target is cpu related. It will be useful for following c2c record tool. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1470074555-24889-8-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-08-02perf hists: Introduce output_resort_cb methodJiri Olsa
When dealing with nested hist entries it's helpful to have a way to resort those nested objects. Adding optional callback call into output_resort function and following new interface function: typedef int (*hists__resort_cb_t)(struct hist_entry *he); void hists__output_resort_cb(struct hists *hists, struct ui_progress *prog, hists__resort_cb_t cb); Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1470074555-24889-7-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-08-02perf tools: Move config/Makefile into Makefile.configJiri Olsa
There's no reason to keep it in separate directory now when we moved out the rest of the files. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1470074555-24889-6-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-08-02perf tests: Add test for bitmap_scnprintf functionJiri Olsa
Automatically test the bitmap_scnprintf function. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1470074555-24889-5-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-08-02tools lib: Add bitmap_and functionJiri Olsa
Add support to perform logical and on bitmaps. Code taken from kernel's include/linux/bitmap.h. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1470074555-24889-4-git-send-email-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-08-02tools lib: Add bitmap_scnprintf functionJiri Olsa
Add support to print bitmap list. Code mostly taken from kernel's bitmap_list_string. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/1470074555-24889-3-git-send-email-jolsa@kernel.org [ s/bitmap_snprintf/bitmap_scnprintf/g as it is a scnprintf wrapper, having the same semantics wrt return value ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-08-02tools lib: Add bitmap_alloc functionJiri Olsa
Adding bitmap_alloc function to dynamically allocate bitmap. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Link: http://lkml.kernel.org/r/20160802113302.GA7479@krava Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-08-02tools lib traceevent: Ignore generated library filesNamhyung Kim
Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt <rostedt@goodmis.org> Link: http://lkml.kernel.org/r/20160802050148.3413-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-08-02perf tools: Fix build failure on perl script contextNamhyung Kim
On my Archlinux machine, perf faild to build like below: CC scripts/perl/Perf-Trace-Util/Context.o In file included from /usr/lib/perl5/core/perl/CORE/perl.h:3905:0, from Context.xs:23: /usr/lib/perl5/core/perl/CORE/inline.h: In function : /usr/lib/perl5/core/perl/CORE/cop.h:612:13: warning: declaration of 'av' shadows a previous local [-Werror-shadow] AV *av =3D GvAV(PL_defgv); ^ /usr/lib/perl5/core/perl/CORE/inline.h:526:5: note: in expansion of macro 'CX_POP_SAVEARRAY' CX_POP_SAVEARRAY(cx); ^~~~~~~~~~~~~~~~ In file included from /usr/lib/perl5/core/perl/CORE/perl.h:5853:0, from Context.xs:23: /usr/lib/perl5/core/perl/CORE/inline.h:518:9: note: shadowed declaration is here AV *av; ^~ What I did to fix is adding '-Wno-shadow' as the error message said it's the cause of the failure. Since it's from the perl (not perf) code base, we don't have the control so I just wanted to ignore the warning when compiling perl scripting code. Committer note: This also fixes the build on Fedora Rawhide. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lkml.kernel.org/r/20160802024317.31725-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-08-01perf annotate: Plug filename string leakArnaldo Carvalho de Melo
If dso__build_id_filename(..., NULL, ...) returns !NULL its because it allocated it, so, when reaching the 'if (dso__is_kcore()) test, we already checked that and were just "fallbacking" to using dso->long_name, but without freeing filename, thus leaking it. Fix it by adding the dso__is_kcore() test to the 'or' group just after it, the one containing the full fallback code, including freeing the filename. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Fixes: ee205503f233 ("perf tools: Fix annotation with kcore") Link: http://lkml.kernel.org/n/tip-qi4rpjq8yo6myvg99kkgt0xz@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-08-01perf annotate: Introduce strerror for handling symbol__disassemble() errorsArnaldo Carvalho de Melo
We were just using pr_error() which makes it difficult for non stdio UIs to provide errors using its widgets, as they need to somehow catch what was passed to pr_error(). Fix it by introducing a __strerror() interface like the ones used elsewhere, for instance target__strerror(). This is just the initial step, more work will be done, but first some error handling bugs noticed while working on this need to be dealt with. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-dgd22zl2xg7x4vcnoa83jxfb@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-08-01Merge tag 'linux-kselftest-4.8-rc1-update' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull kselftest updates from Shuah Khan: "This contains new tests and fixes: - a few fixes to existing tests - new media tests for testing driver unbind, and device removal paths while an user application is actively making system calls and ioctls" * tag 'linux-kselftest-4.8-rc1-update' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: selftests: media_tests add a new video device test selftests: media_tests - Add media_device_open to .gitignore selftests: add media controller regression test scripts and document selftests: add media_device_open test selftests: media_device_test change it to randomize loop count selftests/vm: Don't mlockall MCL_CURRENT in on-fault-limit test selftests/vm: write strlen length instead of sizeof to nr_hugepages selftests/lib: set printf.sh executable
2016-08-01Merge tag 'linux-kselftest-4.8-rc1-fixes' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest Pull kselftest fixes from Shuah Khan: - Add a new timer set-tz test case - Fix a bug in exec test Makefile dependency list * tag 'linux-kselftest-4.8-rc1-fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest: selftests/exec: Makefile is a run-time dependency, add it to the install list kselftests: timers: Add set-tz test case
2016-08-01perf annotate: Rename symbol__annotate() to symbol__disassemble()Arnaldo Carvalho de Melo
This function will not annotate anything, it will just disassembly the given map->dso and symbol. It currently does this by parsing the output of 'objdump --disassemble', but this could conceivably be done using a library or an offshot of the kernel's instruction decoder (arch/x86/lib/inat.c), etc. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-2xpfl4bfnrd6x584b390qok7@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-30Merge tag 'powerpc-4.8-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux Pull powerpc updates from Michael Ellerman: "Highlights: - PowerNV PCI hotplug support. - Lots more Power9 support. - eBPF JIT support on ppc64le. - Lots of cxl updates. - Boot code consolidation. Bug fixes: - Fix spin_unlock_wait() from Boqun Feng - Fix stack pointer corruption in __tm_recheckpoint() from Michael Neuling - Fix multiple bugs in memory_hotplug_max() from Bharata B Rao - mm: Ensure "special" zones are empty from Oliver O'Halloran - ftrace: Separate the heuristics for checking call sites from Michael Ellerman - modules: Never restore r2 for a mprofile-kernel style mcount() call from Michael Ellerman - Fix endianness when reading TCEs from Alexey Kardashevskiy - start rtasd before PCI probing from Greg Kurz - PCI: rpaphp: Fix slot registration for multiple slots under a PHB from Tyrel Datwyler - powerpc/mm: Add memory barrier in __hugepte_alloc() from Sukadev Bhattiprolu Cleanups & fixes: - Drop support for MPIC in pseries from Rashmica Gupta - Define and use PPC64_ELF_ABI_v2/v1 from Michael Ellerman - Remove unused symbols in asm-offsets.c from Rashmica Gupta - Fix SRIOV not building without EEH enabled from Russell Currey - Remove kretprobe_trampoline_holder from Thiago Jung Bauermann - Reduce log level of PCI I/O space warning from Benjamin Herrenschmidt - Add array bounds checking to crash_shutdown_handlers from Suraj Jitindar Singh - Avoid -maltivec when using clang integrated assembler from Anton Blanchard - Fix array overrun in ppc_rtas() syscall from Andrew Donnellan - Fix error return value in cmm_mem_going_offline() from Rasmus Villemoes - export cpu_to_core_id() from Mauricio Faria de Oliveira - Remove old symbols from defconfigs from Andrew Donnellan - Update obsolete comments in setup_32.c about entry conditions from Benjamin Herrenschmidt - Add comment explaining the purpose of setup_kdump_trampoline() from Benjamin Herrenschmidt - Merge the RELOCATABLE config entries for ppc32 and ppc64 from Kevin Hao - Remove RELOCATABLE_PPC32 from Kevin Hao - Fix .long's in tlb-radix.c to more meaningful from Balbir Singh Minor cleanups & fixes: - Andrew Donnellan, Anna-Maria Gleixner, Anton Blanchard, Benjamin Herrenschmidt, Bharata B Rao, Christophe Leroy, Colin Ian King, Geliang Tang, Greg Kurz, Madhavan Srinivasan, Michael Ellerman, Michael Ellerman, Stephen Rothwell, Stewart Smith. Freescale updates from Scott: - "Highlights include more 8xx optimizations, device tree updates, and MVME7100 support." PowerNV PCI hotplug from Gavin Shan: - PCI: Add pcibios_setup_bridge() - Override pcibios_setup_bridge() - Remove PCI_RESET_DELAY_US - Move pnv_pci_ioda_setup_opal_tce_kill() around - Increase PE# capacity - Allocate PE# in reverse order - Create PEs in pcibios_setup_bridge() - Setup PE for root bus - Extend PCI bridge resources - Make pnv_ioda_deconfigure_pe() visible - Dynamically release PE - Update bridge windows on PCI plug - Delay populating pdn - Support PCI slot ID - Use PCI slot reset infrastructure - Introduce pnv_pci_get_slot_id() - Functions to get/set PCI slot state - PCI/hotplug: PowerPC PowerNV PCI hotplug driver - Print correct PHB type names Power9 idle support from Shreyas B. Prabhu: - set power_save func after the idle states are initialized - Use PNV_THREAD_WINKLE macro while requesting for winkle - make hypervisor state restore a function - Rename idle_power7.S to idle_book3s.S - Rename reusable idle functions to hardware agnostic names - Make pnv_powersave_common more generic - abstraction for saving SPRs before entering deep idle states - Add platform support for stop instruction - cpuidle/powernv: Use CPUIDLE_STATE_MAX instead of MAX_POWERNV_IDLE_STATES - cpuidle/powernv: cleanup cpuidle-powernv.c - cpuidle/powernv: Add support for POWER ISA v3 idle states - Use deepest stop state when cpu is offlined Power9 PMU from Madhavan Srinivasan: - factor out power8 pmu macros and defines - factor out power8 pmu functions - factor out power8 __init_pmu code - Add power9 event list macros for generic and cache events - Power9 PMU support - Export Power9 generic and cache events to sysfs Power9 preliminary interrupt & PCI support from Benjamin Herrenschmidt: - Add XICS emulation APIs - Move a few exception common handlers to make room - Add support for HV virtualization interrupts - Add mechanism to force a replay of interrupts - Add ICP OPAL backend - Discover IODA3 PHBs - pci: Remove obsolete SW invalidate - opal: Add real mode call wrappers - Rename TCE invalidation calls - Remove SWINV constants and obsolete TCE code - Rework accessing the TCE invalidate register - Fallback to OPAL for TCE invalidations - Use the device-tree to get available range of M64's - Check status of a PHB before using it - pci: Don't try to allocate resources that will be reassigned Other Power9: - Send SIGBUS on unaligned copy and paste from Chris Smart - Large Decrementer support from Oliver O'Halloran - Load Monitor Register Support from Jack Miller Performance improvements from Anton Blanchard: - Avoid load hit store in __giveup_fpu() and __giveup_altivec() - Avoid load hit store in setup_sigcontext() - Remove assembly versions of strcpy, strcat, strlen and strcmp - Align hot loops of some string functions eBPF JIT from Naveen N. Rao: - Fix/enhance 32-bit Load Immediate implementation - Optimize 64-bit Immediate loads - Introduce rotate immediate instructions - A few cleanups - Isolate classic BPF JIT specifics into a separate header - Implement JIT compiler for extended BPF Operator Panel driver from Suraj Jitindar Singh: - devicetree/bindings: Add binding for operator panel on FSP machines - Add inline function to get rc from an ASYNC_COMP opal_msg - Add driver for operator panel on FSP machines Sparse fixes from Daniel Axtens: - make some things static - Introduce asm-prototypes.h - Include headers containing prototypes - Use #ifdef __BIG_ENDIAN__ #else for REG_BYTE - kvm: Clarify __user annotations - Pass endianness to sparse - Make ppc_md.{halt, restart} __noreturn MM fixes & cleanups from Aneesh Kumar K.V: - radix: Update LPCR HR bit as per ISA - use _raw variant of page table accessors - Compile out radix related functions if RADIX_MMU is disabled - Clear top 16 bits of va only on older cpus - Print formation regarding the the MMU mode - hash: Update SDR1 size encoding as documented in ISA 3.0 - radix: Update PID switch sequence - radix: Update machine call back to support new HCALL. - radix: Add LPID based tlb flush helpers - radix: Add a kernel command line to disable radix - Cleanup LPCR defines Boot code consolidation from Benjamin Herrenschmidt: - Move epapr_paravirt_early_init() to early_init_devtree() - cell: Don't use flat device-tree after boot - ge_imp3a: Don't use the flat device-tree after boot - mpc85xx_ds: Don't use the flat device-tree after boot - mpc85xx_rdb: Don't use the flat device-tree after boot - Don't test for machine type in rtas_initialize() - Don't test for machine type in smp_setup_cpu_maps() - dt: Add of_device_compatible_match() - Factor do_feature_fixup calls - Move 64-bit feature fixup earlier - Move 64-bit memory reserves to setup_arch() - Use a cachable DART - Move FW feature probing out of pseries probe() - Put exception configuration in a common place - Remove early allocation of the SMU command buffer - Move MMU backend selection out of platform code - pasemi: Remove IOBMAP allocation from platform probe() - mm/hash: Don't use machine_is() early during boot - Don't test for machine type to detect HEA special case - pmac: Remove spurrious machine type test - Move hash table ops to a separate structure - Ensure that ppc_md is empty before probing for machine type - Move 64-bit probe_machine() to later in the boot process - Move 32-bit probe() machine to later in the boot process - Get rid of ppc_md.init_early() - Move the boot time info banner to a separate function - Move setting of {i,d}cache_bsize to initialize_cache_info() - Move the content of setup_system() to setup_arch() - Move cache info inits to a separate function - Re-order the call to smp_setup_cpu_maps() - Re-order setup_panic() - Make a few boot functions __init - Merge 32-bit and 64-bit setup_arch() Other new features: - tty/hvc: Use IRQF_SHARED for OPAL hvc consoles from Sam Mendoza-Jonas - tty/hvc: Use opal irqchip interface if available from Sam Mendoza-Jonas - powerpc: Add module autoloading based on CPU features from Alastair D'Silva - crypto: vmx - Convert to CPU feature based module autoloading from Alastair D'Silva - Wake up kopald polling thread before waiting for events from Benjamin Herrenschmidt - xmon: Dump ISA 2.06 SPRs from Michael Ellerman - xmon: Dump ISA 2.07 SPRs from Michael Ellerman - Add a parameter to disable 1TB segs from Oliver O'Halloran - powerpc/boot: Add OPAL console to epapr wrappers from Oliver O'Halloran - Assign fixed PHB number based on device-tree properties from Guilherme G. Piccoli - pseries: Add pseries hotplug workqueue from John Allen - pseries: Add support for hotplug interrupt source from John Allen - pseries: Use kernel hotplug queue for PowerVM hotplug events from John Allen - pseries: Move property cloning into its own routine from Nathan Fontenot - pseries: Dynamic add entires to associativity lookup array from Nathan Fontenot - pseries: Auto-online hotplugged memory from Nathan Fontenot - pseries: Remove call to memblock_add() from Nathan Fontenot cxl: - Add set and get private data to context struct from Michael Neuling - make base more explicitly non-modular from Paul Gortmaker - Use for_each_compatible_node() macro from Wei Yongjun - Frederic Barrat - Abstract the differences between the PSL and XSL - Make vPHB device node match adapter's - Philippe Bergheaud - Add mechanism for delivering AFU driver specific events - Ignore CAPI adapters misplaced in switched slots - Refine slice error debug messages - Andrew Donnellan - static-ify variables to fix sparse warnings - PCI/hotplug: pnv_php: export symbols and move struct types needed by cxl - PCI/hotplug: pnv_php: handle OPAL_PCI_SLOT_OFFLINE power state - Add cxl_check_and_switch_mode() API to switch bi-modal cards - remove dead Kconfig options - fix potential NULL dereference in free_adapter() - Ian Munsie - Update process element after allocating interrupts - Add support for CAPP DMA mode - Fix allowing bogus AFU descriptors with 0 maximum processes - Fix allocating a minimum of 2 pages for the SPA - Fix bug where AFU disable operation had no effect - Workaround XSL bug that does not clear the RA bit after a reset - Fix NULL pointer dereference on kernel contexts with no AFU interrupts - powerpc/powernv: Split cxl code out into a separate file - Add cxl_slot_is_supported API - Enable bus mastering for devices using CAPP DMA mode - Move cxl_afu_get / cxl_afu_put to base - Allow a default context to be associated with an external pci_dev - Do not create vPHB if there are no AFU configuration records - powerpc/powernv: Add support for the cxl kernel api on the real phb - Add support for using the kernel API with a real PHB - Add kernel APIs to get & set the max irqs per context - Add preliminary workaround for CX4 interrupt limitation - Add support for interrupts on the Mellanox CX4 - Workaround PE=0 hardware limitation in Mellanox CX4 - powerpc/powernv: Fix pci-cxl.c build when CONFIG_MODULES=n selftests: - Test unaligned copy and paste from Chris Smart - Load Monitor Register Tests from Jack Miller - Cyril Bur - exec() with suspended transaction - Use signed long to read perf_event_paranoid - Fix usage message in context_switch - Fix generation of vector instructions/types in context_switch - Michael Ellerman - Use "Delta" rather than "Error" in normal output - Import Anton's mmap & futex micro benchmarks - Add a test for PROT_SAO" * tag 'powerpc-4.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux: (263 commits) powerpc/mm: Parenthesise IS_ENABLED() in if condition tty/hvc: Use opal irqchip interface if available tty/hvc: Use IRQF_SHARED for OPAL hvc consoles selftests/powerpc: exec() with suspended transaction powerpc: Improve comment explaining why we modify VRSAVE powerpc/mm: Drop unused externs for hpte_init_beat[_v3]() powerpc/mm: Rename hpte_init_lpar() and move the fallback to a header powerpc/mm: Fix build break when PPC_NATIVE=n crypto: vmx - Convert to CPU feature based module autoloading powerpc: Add module autoloading based on CPU features powerpc/powernv/ioda: Fix endianness when reading TCEs powerpc/mm: Add memory barrier in __hugepte_alloc() powerpc/modules: Never restore r2 for a mprofile-kernel style mcount() call powerpc/ftrace: Separate the heuristics for checking call sites powerpc: Merge 32-bit and 64-bit setup_arch() powerpc/64: Make a few boot functions __init powerpc: Re-order setup_panic() powerpc: Re-order the call to smp_setup_cpu_maps() powerpc/32: Move cache info inits to a separate function powerpc/64: Move the content of setup_system() to setup_arch() ...
2016-07-30Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes from Thomas Gleixner: "This update contains: - a fix for the bpf tools to use the new EM_BPF code - a fix for the module parser of perf to retrieve the proper text start address - add str_error_c to libapi to avoid linking against tools/lib/str_error_r.o" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: tools lib api: Add str_error_c to libapi perf s390: Fix 'start' address of module's map tools lib bpf: Use official ELF e_machine value
2016-07-30Merge branch 'core-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull misc fixes from Thomas Gleixner: "This update contains: - a fix for stomp-machine so the nmi_watchdog wont trigger on the cpu waiting for the others to execute the callback - various fixes and updates to objtool including an resync of the instruction decoder to match the kernel's decoder" * 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: objtool: Un-capitalize "Warning" for out-of-sync instruction decoder objtool: Resync x86 instruction decoder with the kernel's objtool: Support new GCC 6 switch jump table pattern stop_machine: Touch_nmi_watchdog() after MULTI_STOP_PREPARE objtool: Add 'fixdep' to objtool/.gitignore
2016-07-29Merge branch 'next' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security Pull security subsystem updates from James Morris: "Highlights: - TPM core and driver updates/fixes - IPv6 security labeling (CALIPSO) - Lots of Apparmor fixes - Seccomp: remove 2-phase API, close hole where ptrace can change syscall #" * 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris/linux-security: (156 commits) apparmor: fix SECURITY_APPARMOR_HASH_DEFAULT parameter handling tpm: Add TPM 2.0 support to the Nuvoton i2c driver (NPCT6xx family) tpm: Factor out common startup code tpm: use devm_add_action_or_reset tpm2_i2c_nuvoton: add irq validity check tpm: read burstcount from TPM_STS in one 32-bit transaction tpm: fix byte-order for the value read by tpm2_get_tpm_pt tpm_tis_core: convert max timeouts from msec to jiffies apparmor: fix arg_size computation for when setprocattr is null terminated apparmor: fix oops, validate buffer size in apparmor_setprocattr() apparmor: do not expose kernel stack apparmor: fix module parameters can be changed after policy is locked apparmor: fix oops in profile_unpack() when policy_db is not present apparmor: don't check for vmalloc_addr if kvzalloc() failed apparmor: add missing id bounds check on dfa verification apparmor: allow SYS_CAP_RESOURCE to be sufficient to prlimit another task apparmor: use list_next_entry instead of list_entry_next apparmor: fix refcount race when finding a child profile apparmor: fix ref count leak when profile sha1 hash is read apparmor: check that xindex is in trans_table bounds ...
2016-07-29objtool: Un-capitalize "Warning" for out-of-sync instruction decoderJosh Poimboeuf
Change "Warning" to "warning" to make it look more like a GCC warning. Hopefully that will be enough to help the 0-day bot or other automated tools catch this warning earlier before it ends up in Linus's tree. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/b1669f391a5db91040427fd9f8e1e79db18f9709.1469751119.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-07-29objtool: Resync x86 instruction decoder with the kernel'sJosh Poimboeuf
This fixes the following warning: Warning: objtool: x86 instruction decoder differs from kernel Unfortunately we have three identical copies of the x86 instruction decoder in the kernel tree that have to be manually kept in sync. It's on my TODO list to at least library-ize the ones in the tools subdir so we'd only have two of them instead of three. In the meantime, here's another manual sync. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: c61f4d5ebaf0 ("perf tools: Add AVX-512 support to the instruction decoder used by Intel PT") Link: http://lkml.kernel.org/r/d7f74b4d91fed25b0be33cd5c86f5131fa1a7529.1469751119.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-07-29objtool: Support new GCC 6 switch jump table patternJosh Poimboeuf
This fixes some false positive objtool warnings seen with gcc 6.1.1: kernel/trace/ring_buffer.o: warning: objtool: ring_buffer_read_page()+0x36c: sibling call from callable instruction with changed frame pointer arch/x86/kernel/reboot.o: warning: objtool: native_machine_emergency_restart()+0x139: sibling call from callable instruction with changed frame pointer lib/xz/xz_dec_stream.o: warning: objtool: xz_dec_run()+0xc2: sibling call from callable instruction with changed frame pointer With GCC 6, a new code pattern is sometimes used to access a switch statement jump table in .rodata, which objtool doesn't yet recognize: mov [rodata addr],%reg1 ... some instructions ... jmpq *(%reg1,%reg2,8) Add support for detecting that pattern. The detection code is rather crude, but it's still effective at weeding out false positives and catching real warnings. It can be refined later once objtool starts reading DWARF CFI. Reported-by: Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/b8c9503b4ad8c8a827cc5400db4c1b40a3ea07bc.1469751119.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-07-29perf target: str_error_r() always returns the buffer it receivesArnaldo Carvalho de Melo
So no need for checking if it uses the strerror_r() GNU variant error reporting mechanism, i.e. if it returns a pointer to a immutable string internal to glibc. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Fixes: c8b5f2c96d1b ("tools: Introduce str_error_r()") Link: http://lkml.kernel.org/n/tip-xr83cd4y4r3cn6tq6w4f59jb@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-29perf annotate: Use pipe + fork instead of popenArnaldo Carvalho de Melo
We will need to redirect the stderr as well, so open code popen as a starting point. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-k0zt9svg4bswiglem7ornts4@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-28Merge tag 'libnvdimm-for-4.8' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm Pull libnvdimm updates from Dan Williams: - Replace pcommit with ADR / directed-flushing. The pcommit instruction, which has not shipped on any product, is deprecated. Instead, the requirement is that platforms implement either ADR, or provide one or more flush addresses per nvdimm. ADR (Asynchronous DRAM Refresh) flushes data in posted write buffers to the memory controller on a power-fail event. Flush addresses are defined in ACPI 6.x as an NVDIMM Firmware Interface Table (NFIT) sub-structure: "Flush Hint Address Structure". A flush hint is an mmio address that when written and fenced assures that all previous posted writes targeting a given dimm have been flushed to media. - On-demand ARS (address range scrub). Linux uses the results of the ACPI ARS commands to track bad blocks in pmem devices. When latent errors are detected we re-scrub the media to refresh the bad block list, userspace can also request a re-scrub at any time. - Support for the Microsoft DSM (device specific method) command format. - Support for EDK2/OVMF virtual disk device memory ranges. - Various fixes and cleanups across the subsystem. * tag 'libnvdimm-for-4.8' of git://git.kernel.org/pub/scm/linux/kernel/git/nvdimm/nvdimm: (41 commits) libnvdimm-btt: Delete an unnecessary check before the function call "__nd_device_register" nfit: do an ARS scrub on hitting a latent media error nfit: move to nfit/ sub-directory nfit, libnvdimm: allow an ARS scrub to be triggered on demand libnvdimm: register nvdimm_bus devices with an nd_bus driver pmem: clarify a debug print in pmem_clear_poison x86/insn: remove pcommit Revert "KVM: x86: add pcommit support" nfit, tools/testing/nvdimm/: unify shutdown paths libnvdimm: move ->module to struct nvdimm_bus_descriptor nfit: cleanup acpi_nfit_init calling convention nfit: fix _FIT evaluation memory leak + use after free tools/testing/nvdimm: add manufacturing_{date|location} dimm properties tools/testing/nvdimm: add virtual ramdisk range acpi, nfit: treat virtual ramdisk SPA as pmem region pmem: kill __pmem address space pmem: kill wmb_pmem() libnvdimm, pmem: use nvdimm_flush() for namespace I/O writes fs/dax: remove wmb_pmem() libnvdimm, pmem: flush posted-write queues on shutdown ...
2016-07-28mm, thp: remove __GFP_NORETRY from khugepaged and madvised allocationsVlastimil Babka
After the previous patch, we can distinguish costly allocations that should be really lightweight, such as THP page faults, with __GFP_NORETRY. This means we don't need to recognize khugepaged allocations via PF_KTHREAD anymore. We can also change THP page faults in areas where madvise(MADV_HUGEPAGE) was used to try as hard as khugepaged, as the process has indicated that it benefits from THP's and is willing to pay some initial latency costs. We can also make the flags handling less cryptic by distinguishing GFP_TRANSHUGE_LIGHT (no reclaim at all, default mode in page fault) from GFP_TRANSHUGE (only direct reclaim, khugepaged default). Adding __GFP_NORETRY or __GFP_KSWAPD_RECLAIM is done where needed. The patch effectively changes the current GFP_TRANSHUGE users as follows: * get_huge_zero_page() - the zero page lifetime should be relatively long and it's shared by multiple users, so it's worth spending some effort on it. We use GFP_TRANSHUGE, and __GFP_NORETRY is not added. This also restores direct reclaim to this allocation, which was unintentionally removed by commit e4a49efe4e7e ("mm: thp: set THP defrag by default to madvise and add a stall-free defrag option") * alloc_hugepage_khugepaged_gfpmask() - this is khugepaged, so latency is not an issue. So if khugepaged "defrag" is enabled (the default), do reclaim via GFP_TRANSHUGE without __GFP_NORETRY. We can remove the PF_KTHREAD check from page alloc. As a side-effect, khugepaged will now no longer check if the initial compaction was deferred or contended. This is OK, as khugepaged sleep times between collapsion attempts are long enough to prevent noticeable disruption, so we should allow it to spend some effort. * migrate_misplaced_transhuge_page() - already was masking out __GFP_RECLAIM, so just convert to GFP_TRANSHUGE_LIGHT which is equivalent. * alloc_hugepage_direct_gfpmask() - vma's with VM_HUGEPAGE (via madvise) are now allocating without __GFP_NORETRY. Other vma's keep using __GFP_NORETRY if direct reclaim/compaction is at all allowed (by default it's allowed only for madvised vma's). The rest is conversion to GFP_TRANSHUGE(_LIGHT). [mhocko@suse.com: suggested GFP_TRANSHUGE_LIGHT] Link: http://lkml.kernel.org/r/20160721073614.24395-7-vbabka@suse.cz Signed-off-by: Vlastimil Babka <vbabka@suse.cz> Acked-by: Michal Hocko <mhocko@suse.com> Acked-by: Mel Gorman <mgorman@techsingularity.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-07-28perf evsel: Introduce constructor for cycles eventArnaldo Carvalho de Melo
That is the default used when no events is specified in tools, separate it so that simpler tools that need no evlist can use it directly. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-67mwuthscwroz88x9pswcqyv@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-27tools lib api: Add str_error_c to libapiArnaldo Carvalho de Melo
Because it uses that function, which would lead every tool using it to need to link against tools/lib/str_error_r.o. This fixes building tools/vm/, that links with libapi. Reported-by: Arjan van de Ven <arjan@linux.intel.com> Reported-by: Randy Dunlap <rdunlap@infradead.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Fixes: b31e3e3316a7 ("tools lib api fs: Use str_error_r()") Link: http://lkml.kernel.org/n/tip-aedt3qzibhnhaov2j4caqi61@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-27Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-nextLinus Torvalds
Pull networking updates from David Miller: 1) Unified UDP encapsulation offload methods for drivers, from Alexander Duyck. 2) Make DSA binding more sane, from Andrew Lunn. 3) Support QCA9888 chips in ath10k, from Anilkumar Kolli. 4) Several workqueue usage cleanups, from Bhaktipriya Shridhar. 5) Add XDP (eXpress Data Path), essentially running BPF programs on RX packets as soon as the device sees them, with the option to mirror the packet on TX via the same interface. From Brenden Blanco and others. 6) Allow qdisc/class stats dumps to run lockless, from Eric Dumazet. 7) Add VLAN support to b53 and bcm_sf2, from Florian Fainelli. 8) Simplify netlink conntrack entry layout, from Florian Westphal. 9) Add ipv4 forwarding support to mlxsw spectrum driver, from Ido Schimmel, Yotam Gigi, and Jiri Pirko. 10) Add SKB array infrastructure and convert tun and macvtap over to it. From Michael S Tsirkin and Jason Wang. 11) Support qdisc packet injection in pktgen, from John Fastabend. 12) Add neighbour monitoring framework to TIPC, from Jon Paul Maloy. 13) Add NV congestion control support to TCP, from Lawrence Brakmo. 14) Add GSO support to SCTP, from Marcelo Ricardo Leitner. 15) Allow GRO and RPS to function on macsec devices, from Paolo Abeni. 16) Support MPLS over IPV4, from Simon Horman. * git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next: (1622 commits) xgene: Fix build warning with ACPI disabled. be2net: perform temperature query in adapter regardless of its interface state l2tp: Correctly return -EBADF from pppol2tp_getname. net/mlx5_core/health: Remove deprecated create_singlethread_workqueue net: ipmr/ip6mr: update lastuse on entry change macsec: ensure rx_sa is set when validation is disabled tipc: dump monitor attributes tipc: add a function to get the bearer name tipc: get monitor threshold for the cluster tipc: make cluster size threshold for monitoring configurable tipc: introduce constants for tipc address validation net: neigh: disallow transition to NUD_STALE if lladdr is unchanged in neigh_update() MAINTAINERS: xgene: Add driver and documentation path Documentation: dtb: xgene: Add MDIO node dtb: xgene: Add MDIO node drivers: net: xgene: ethtool: Use phy_ethtool_gset and sset drivers: net: xgene: Use exported functions drivers: net: xgene: Enable MDIO driver drivers: net: xgene: Add backward compatibility drivers: net: phy: xgene: Add MDIO driver ...
2016-07-27objtool: Add 'fixdep' to objtool/.gitignorePaul Gortmaker
To fix: Untracked files: (use "git add <file>..." to include in what will be committed) tools/objtool/fixdep Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com> Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Link: http://lkml.kernel.org/r/a4571f6893caf737d05524cfa3829c2abc1fb240.1469452729.git.jpoimboe@redhat.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-07-27Merge tag 'perf-urgent-for-mingo-20160726' of ↵Ingo Molnar
git://git.kernel.org/pub/scm/linux/kernel/git/acme/linux into perf/urgent Pull perf/urgent fixes from Arnaldo Carvalho de Melo: - Fix obtaining the 'start' address for a kernel module on s390, where .text doesn't coincide with the start of the module as reported in /proc/modules (Song Shan Gong) - Use official ELF e_machine value for BPF objects generated via perf + LLVM when specifying BPF scriptlet in 'perf record/trace --event' (Wang Nan) Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Ingo Molnar <mingo@kernel.org>
2016-07-26Merge branch 'akpm' (patches from Andrew)Linus Torvalds
Merge updates from Andrew Morton: - a few misc bits - ocfs2 - most(?) of MM * emailed patches from Andrew Morton <akpm@linux-foundation.org>: (125 commits) thp: fix comments of __pmd_trans_huge_lock() cgroup: remove unnecessary 0 check from css_from_id() cgroup: fix idr leak for the first cgroup root mm: memcontrol: fix documentation for compound parameter mm: memcontrol: remove BUG_ON in uncharge_list mm: fix build warnings in <linux/compaction.h> mm, thp: convert from optimistic swapin collapsing to conservative mm, thp: fix comment inconsistency for swapin readahead functions thp: update Documentation/{vm/transhuge,filesystems/proc}.txt shmem: split huge pages beyond i_size under memory pressure thp: introduce CONFIG_TRANSPARENT_HUGE_PAGECACHE khugepaged: add support of collapse for tmpfs/shmem pages shmem: make shmem_inode_info::lock irq-safe khugepaged: move up_read(mmap_sem) out of khugepaged_alloc_page() thp: extract khugepaged from mm/huge_memory.c shmem, thp: respect MADV_{NO,}HUGEPAGE for file mappings shmem: add huge pages support shmem: get_unmapped_area align huge page shmem: prepare huge= mount option and sysfs knob mm, rmap: account shmem thp pages ...
2016-07-26Merge tag 'gpio-v4.8-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio Pull GPIO updates from Linus Walleij: "This is the bulk of GPIO changes for the v4.8 kernel cycle. The big news is the completion of the chardev ABI which I'm very happy about and apart from that it's an ordinary, quite busy cycle. The details are below. The patches are tested in linux-next for some time, patches to other subsystem mostly have ACKs. I got overly ambitious with configureing lines as input for IRQ lines but it turns out that some controllers have their interrupt-enable and input-enabling in orthogonal settings so the assumption that all IRQ lines are input lines does not hold. Oh well, revert and back to the drawing board with that. Core changes: - The big item is of course the completion of the character device ABI. It has now replaced and surpassed the former unmaintainable sysfs ABI: we can now hammer (bitbang) individual lines or sets of lines and read individual lines or sets of lines from userspace, and we can also register to listen to GPIO events from userspace. As a tie-in we have two new tools in tools/gpio: gpio-hammer and gpio-event-mon that illustrate the proper use of the new ABI. As someone said: the wild west days of GPIO are now over. - Continued to remove the pointless ARCH_[WANT_OPTIONAL|REQUIRE]_GPIOLIB Kconfig symbols. I'm patching hexagon, openrisc, powerpc, sh, unicore, ia64 and microblaze. These are either ACKed by their maintainers or patched anyways after a grace period and no response from maintainers. Some archs (ARM) come in from their trees, and others (x86) are still not fixed, so I might send a second pull request to root it out later in this merge window, or just defer to v4.9. - The GPIO tools are moved to the tools build system. New drivers: - New driver for the MAX77620/MAX20024. - New driver for the Intel Merrifield. - Enabled PCA953x for the TI PCA9536. - Enabled PCA953x for the Intel Edison. - Enabled R8A7792 in the RCAR driver. Driver improvements: - The STMPE and F7188x now supports the .get_direction() callback. - The Xilinx driver supports setting multiple lines at once. - ACPI support for the Vulcan GPIO controller. - The MMIO GPIO driver supports device tree probing. - The Acer One 10 is supported through the _DEP ACPI attribute. Cleanups: - A major cleanup of the OF/DT support code. It is way easier to read and understand now, probably this improves performance too. - Drop a few redundant .owner assignments. - Remove CLPS711x boardfile support: we are 100% DT" * tag 'gpio-v4.8-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-gpio: (67 commits) MAINTAINERS: Add INTEL MERRIFIELD GPIO entry gpio: dwapb: add missing fwnode_handle_put() in dwapb_gpio_get_pdata() gpio: merrifield: Protect irq_ack() and gpio_set() by lock gpio: merrifield: Introduce GPIO driver to support Merrifield gpio: intel-mid: Make it depend to X86_INTEL_MID gpio: intel-mid: Sort header block alphabetically gpio: intel-mid: Remove potentially harmful code gpio: rcar: add R8A7792 support gpiolib: remove duplicated include from gpiolib.c Revert "gpio: convince line to become input in irq helper" gpiolib: of_find_gpio(): Don't discard errors gpio: of: Allow overriding the device node gpio: free handles in fringe cases gpio: tps65218: Add platform_device_id table gpio: max77620: get gpio value based on direction gpio: lynxpoint: avoid potential warning on error path tools/gpio: add install section tools/gpio: move to tools buildsystem gpio: intel-mid: switch to devm_gpiochip_add_data() gpio: 74x164: Use spi_write() helper instead of open coding ...
2016-07-26Merge tag 'acpi-4.8-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull ACPI updates from Rafael Wysocki: "The new feaures here are the support for ACPI overlays (allowing ACPI tables to be loaded at any time from EFI variables or via configfs) and the LPI (Low-Power Idle) support. Also notable is the ACPI-based NUMA support for ARM64. Apart from that we have two new drivers, for the DPTF (Dynamic Power and Thermal Framework) power participant device and for the Intel Broxton WhiskeyCove PMIC, some more PMIC-related changes, support for the Boot Error Record Table (BERT) in APEI and support for platform-initiated graceful shutdown. Plus two new pieces of documentation and usual assorted fixes and cleanups in quite a few places. Specifics: - Support for ACPI SSDT overlays allowing Secondary System Description Tables (SSDTs) to be loaded at any time from EFI variables or via configfs (Octavian Purdila, Mika Westerberg). - Support for the ACPI LPI (Low-Power Idle) feature introduced in ACPI 6.0 and allowing processor idle states to be represented in ACPI tables in a hierarchical way (with the help of Processor Container objects) and support for ACPI idle states management on ARM64, based on LPI (Sudeep Holla). - General improvements of ACPI support for NUMA and ARM64 support for ACPI-based NUMA (Hanjun Guo, David Daney, Robert Richter). - General improvements of the ACPI table upgrade mechanism and ARM64 support for that feature (Aleksey Makarov, Jon Masters). - Support for the Boot Error Record Table (BERT) in APEI and improvements of kernel messages printed by the error injection code (Huang Ying, Borislav Petkov). - New driver for the Intel Broxton WhiskeyCove PMIC operation region and support for the REGS operation region on Broxton, PMIC code cleanups (Bin Gao, Felipe Balbi, Paul Gortmaker). - New driver for the power participant device which is part of the Dynamic Power and Thermal Framework (DPTF) and DPTF-related code reorganization (Srinivas Pandruvada). - Support for the platform-initiated graceful shutdown feature introduced in ACPI 6.1 (Prashanth Prakash). - ACPI button driver update related to lid input events generated automatically on initialization and system resume that have been problematic for some time (Lv Zheng). - ACPI EC driver cleanups (Lv Zheng). - Documentation of the ACPICA release automation process and the in-kernel ACPI AML debugger (Lv Zheng). - New blacklist entry and two fixes for the ACPI backlight driver (Alex Hung, Arvind Yadav, Ralf Gerbig). - Cleanups of the ACPI pci_slot driver (Joe Perches, Paul Gortmaker). - ACPI CPPC code changes to make it more robust against possible defects in ACPI tables and new symbol definitions for PCC (Hoan Tran). - System reboot code modification to execute the ACPI _PTS (Prepare To Sleep) method in addition to _TTS (Ocean He). - ACPICA-related change to carry out lock ordering checks in ACPICA if ACPICA debug is enabled in the kernel (Lv Zheng). - Assorted minor fixes and cleanups (Andy Shevchenko, Baoquan He, Bhaktipriya Shridhar, Paul Gortmaker, Rafael Wysocki)" * tag 'acpi-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (71 commits) ACPI: enable ACPI_PROCESSOR_IDLE on ARM64 arm64: add support for ACPI Low Power Idle(LPI) drivers: firmware: psci: initialise idle states using ACPI LPI cpuidle: introduce CPU_PM_CPU_IDLE_ENTER macro for ARM{32, 64} arm64: cpuidle: drop __init section marker to arm_cpuidle_init ACPI / processor_idle: Add support for Low Power Idle(LPI) states ACPI / processor_idle: introduce ACPI_PROCESSOR_CSTATE ACPI / DPTF: move int340x_thermal.c to the DPTF folder ACPI / DPTF: Add DPTF power participant driver ACPI / lpat: make it explicitly non-modular ACPI / dock: make dock explicitly non-modular ACPI / PCI: make pci_slot explicitly non-modular ACPI / PMIC: remove modular references from non-modular code ACPICA: Linux: Enable ACPI_MUTEX_DEBUG for Linux kernel ACPI: Rename configfs.c to acpi_configfs.c to prevent link error ACPI / debugger: Add AML debugger documentation ACPI: Add documentation describing ACPICA release automation ACPI: add support for loading SSDTs via configfs ACPI: add support for configfs efi / ACPI: load SSTDs from EFI variables ...
2016-07-26Merge tag 'pm-4.8-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management updates from Rafael Wysocki: "Again, the majority of changes go into the cpufreq subsystem, but there are no big features this time. The cpufreq changes that stand out somewhat are the governor interface rework and improvements related to the handling of frequency tables. Apart from those, there are fixes and new device/CPU IDs in drivers, cleanups and an improvement of the new schedutil governor. Next, there are some changes in the hibernation core, including a fix for a nasty problem related to the MONITOR/MWAIT usage by CPU offline during resume from hibernation, a few core improvements related to memory management during resume, a couple of additional debug features and cleanups. Finally, we have some fixes and cleanups in the devfreq subsystem, generic power domains framework improvements related to system suspend/resume, support for some new chips in intel_idle and in the power capping RAPL driver, a new version of the AnalyzeSuspend utility and some assorted fixes and cleanups. Specifics: - Rework the cpufreq governor interface to make it more straightforward and modify the conservative governor to avoid using transition notifications (Rafael Wysocki). - Rework the handling of frequency tables by the cpufreq core to make it more efficient (Viresh Kumar). - Modify the schedutil governor to reduce the number of wakeups it causes to occur in cases when the CPU frequency doesn't need to be changed (Steve Muckle, Viresh Kumar). - Fix some minor issues and clean up code in the cpufreq core and governors (Rafael Wysocki, Viresh Kumar). - Add Intel Broxton support to the intel_pstate driver (Srinivas Pandruvada). - Fix problems related to the config TDP feature and to the validity of the MSR_HWP_INTERRUPT register in intel_pstate (Jan Kiszka, Srinivas Pandruvada). - Make intel_pstate update the cpu_frequency tracepoint even if the frequency doesn't change to avoid confusing powertop (Rafael Wysocki). - Clean up the usage of __init/__initdata in intel_pstate, mark some of its internal variables as __read_mostly and drop an unused structure element from it (Jisheng Zhang, Carsten Emde). - Clean up the usage of some duplicate MSR symbols in intel_pstate and turbostat (Srinivas Pandruvada). - Update/fix the powernv, s3c24xx and mvebu cpufreq drivers (Akshay Adiga, Viresh Kumar, Ben Dooks). - Fix a regression (introduced during the 4.5 cycle) in the pcc-cpufreq driver by reverting the problematic commit (Andreas Herrmann). - Add support for Intel Denverton to intel_idle, clean up Broxton support in it and make it explicitly non-modular (Jacob Pan, Jan Beulich, Paul Gortmaker). - Add support for Denverton and Ivy Bridge server to the Intel RAPL power capping driver and make it more careful about the handing of MSRs that may not be present (Jacob Pan, Xiaolong Wang). - Fix resume from hibernation on x86-64 by making the CPU offline during resume avoid using MONITOR/MWAIT in the "play dead" loop which may lead to an inadvertent "revival" of a "dead" CPU and a page fault leading to a kernel crash from it (Rafael Wysocki). - Make memory management during resume from hibernation more straightforward (Rafael Wysocki). - Add debug features that should help to detect problems related to hibernation and resume from it (Rafael Wysocki, Chen Yu). - Clean up hibernation core somewhat (Rafael Wysocki). - Prevent KASAN from instrumenting the hibernation core which leads to large numbers of false-positives from it (James Morse). - Prevent PM (hibernate and suspend) notifiers from being called during the cleanup phase if they have not been called during the corresponding preparation phase which is possible if one of the other notifiers returns an error at that time (Lianwei Wang). - Improve suspend-related debug printout in the tasks freezer and clean up suspend-related console handling (Roger Lu, Borislav Petkov). - Update the AnalyzeSuspend script in the kernel sources to version 4.2 (Todd Brandt). - Modify the generic power domains framework to make it handle system suspend/resume better (Ulf Hansson). - Make the runtime PM framework avoid resuming devices synchronously when user space changes the runtime PM settings for them and improve its error reporting (Rafael Wysocki, Linus Walleij). - Fix error paths in devfreq drivers (exynos, exynos-ppmu, exynos-bus) and in the core, make some devfreq code explicitly non-modular and change some of it into tristate (Bartlomiej Zolnierkiewicz, Peter Chen, Paul Gortmaker). - Add DT support to the generic PM clocks management code and make it export some more symbols (Jon Hunter, Paul Gortmaker). - Make the PCI PM core code slightly more robust against possible driver errors (Andy Shevchenko). - Make it possible to change DESTDIR and PREFIX in turbostat (Andy Shevchenko)" * tag 'pm-4.8-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: (89 commits) Revert "cpufreq: pcc-cpufreq: update default value of cpuinfo_transition_latency" PM / hibernate: Introduce test_resume mode for hibernation cpufreq: export cpufreq_driver_resolve_freq() cpufreq: Disallow ->resolve_freq() for drivers providing ->target_index() PCI / PM: check all fields in pci_set_platform_pm() cpufreq: acpi-cpufreq: use cached frequency mapping when possible cpufreq: schedutil: map raw required frequency to driver frequency cpufreq: add cpufreq_driver_resolve_freq() cpufreq: intel_pstate: Check cpuid for MSR_HWP_INTERRUPT intel_pstate: Update cpu_frequency tracepoint every time cpufreq: intel_pstate: clean remnant struct element PM / tools: scripts: AnalyzeSuspend v4.2 x86 / hibernate: Use hlt_play_dead() when resuming from hibernation cpufreq: powernv: Replacing pstate_id with frequency table index intel_pstate: Fix MSR_CONFIG_TDP_x addressing in core_get_max_pstate() PM / hibernate: Image data protection during restoration PM / hibernate: Add missing braces in __register_nosave_region() PM / hibernate: Clean up comments in snapshot.c PM / hibernate: Clean up function headers in snapshot.c PM / hibernate: Add missing braces in hibernate_setup() ...
2016-07-26tools/vm/page_owner: increase temporary buffer sizeJoonsoo Kim
Page owner will be changed to store more deep stacktrace so current temporary buffer size isn't enough. Increase it. Link: http://lkml.kernel.org/r/1464230275-25791-5-git-send-email-iamjoonsoo.kim@lge.com Signed-off-by: Joonsoo Kim <iamjoonsoo.kim@lge.com> Acked-by: Vlastimil Babka <vbabka@suse.cz> Cc: Mel Gorman <mgorman@techsingularity.net> Cc: Minchan Kim <minchan@kernel.org> Cc: Alexander Potapenko <glider@google.com> Cc: Hugh Dickins <hughd@google.com> Cc: Michal Hocko <mhocko@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2016-07-26perf s390: Fix 'start' address of module's mapSong Shan Gong
At present, when creating module's map, perf gets 'start' address by parsing '/proc/modules', but it's the module base address, it isn't the start address of the '.text' section. In most arches, it's OK. But for s390, it places 'GOT' and 'PLT' relocations before '.text' section. So there exists an offset between module base address and '.text' section, which will incur wrong symbol resolution for modules. Fix this bug by getting 'start' address of module's map from parsing '/sys/module/[module name]/sections/.text', not from '/proc/modules'. Signed-off-by: Song Shan Gong <gongss@linux.vnet.ibm.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: David Ahern <dsahern@gmail.com> Link: http://lkml.kernel.org/r/1469070651-6447-2-git-send-email-gongss@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-26Merge branch 'perf-urgent-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf fixes from Ingo Molnar: "This tree contains tooling fixes plus some additions: - fixes to the vdso2c build environment that Stephen Rothwell is using for the linux-next build (Arnaldo Carvalho de Melo) - AVX-512 instruction mappings (Adrian Hunter) - misc fixes" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: Revert "perf tools: event.h needs asm/perf_regs.h" x86: Make the vdso2c compiler use the host architecture headers tools build: Fix objtool build with ARCH=x86_64 objtool: Always use host headers objtool: Use tools/scripts/Makefile.arch to get ARCH and HOSTARCH tools build: Add HOSTARCH Makefile variable perf tests kmod-path: Fix build on ubuntu:16.04-x-armhf perf tools: Add AVX-512 instructions to the new instructions test perf tools: Add AVX-512 support to the instruction decoder used by Intel PT x86/insn: Add AVX-512 support to the instruction decoder x86/insn: perf tools: Fix vcvtph2ps instruction decoding
2016-07-26selftests: media_tests add a new video device testShuah Khan
Add a new video device test that opens user specified Video Device and calls video ioctls in a loop once every 10 seconds. This test is intended for testing device removal and driver unbind while an ioctl is active. Clean device removal and driver unbind is expected without any use-after-free and panics. Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com>
2016-07-26tools lib bpf: Use official ELF e_machine valueWang Nan
New LLVM will issue newly assigned EM_BPF machine code. The new code will be propagated to glibc and libelf. This patch introduces the new machine code to libbpf. Signed-off-by: Wang Nan <wangnan0@huawei.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Cc: Zefan Li <lizefan@huawei.com> Cc: pi3orama@163.com Link: http://lkml.kernel.org/r/1468821668-60088-1-git-send-email-wangnan0@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2016-07-26selftests/powerpc: exec() with suspended transactionCyril Bur
Perform an exec() class syscall with a suspended transaction. This is a test for the bug we fixed in 8e96a87c5431 ("powerpc/tm: Always reclaim in start_thread() for exec() class syscalls"). Signed-off-by: Cyril Bur <cyrilbur@gmail.com> [mpe: Fix build errors, use a single binary for the test] Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2016-07-25Merge branch 'x86-mm-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull x86 mm updates from Ingo Molnar: "Various x86 low level modifications: - preparatory work to support virtually mapped kernel stacks (Andy Lutomirski) - support for 64-bit __get_user() on 32-bit kernels (Benjamin LaHaise) - (involved) workaround for Knights Landing CPU erratum (Dave Hansen) - MPX enhancements (Dave Hansen) - mremap() extension to allow remapping of the special VDSO vma, for purposes of user level context save/restore (Dmitry Safonov) - hweight and entry code cleanups (Borislav Petkov) - bitops code generation optimizations and cleanups with modern GCC (H. Peter Anvin) - syscall entry code optimizations (Paolo Bonzini)" * 'x86-mm-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (43 commits) x86/mm/cpa: Add missing comment in populate_pdg() x86/mm/cpa: Fix populate_pgd(): Stop trying to deallocate failed PUDs x86/syscalls: Add compat_sys_preadv64v2/compat_sys_pwritev64v2 x86/smp: Remove unnecessary initialization of thread_info::cpu x86/smp: Remove stack_smp_processor_id() x86/uaccess: Move thread_info::addr_limit to thread_struct x86/dumpstack: Rename thread_struct::sig_on_uaccess_error to sig_on_uaccess_err x86/uaccess: Move thread_info::uaccess_err and thread_info::sig_on_uaccess_err to thread_struct x86/dumpstack: When OOPSing, rewind the stack before do_exit() x86/mm/64: In vmalloc_fault(), use CR3 instead of current->active_mm x86/dumpstack/64: Handle faults when printing the "Stack: " part of an OOPS x86/dumpstack: Try harder to get a call trace on stack overflow x86/mm: Remove kernel_unmap_pages_in_pgd() and efi_cleanup_page_tables() x86/mm/cpa: In populate_pgd(), don't set the PGD entry until it's populated x86/mm/hotplug: Don't remove PGD entries in remove_pagetable() x86/mm: Use pte_none() to test for empty PTE x86/mm: Disallow running with 32-bit PTEs to work around erratum x86/mm: Ignore A/D bits in pte/pmd/pud_none() x86/mm: Move swap offset/type up in PTE to work around erratum x86/entry: Inline enter_from_user_mode() ...
2016-07-25Merge branch 'perf-core-for-linus' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip Pull perf updates from Ingo Molnar: "With over 300 commits it's been a busy cycle - with most of the work concentrated on the tooling side (as it should). The main kernel side enhancements were: - Add per event callchain limit: Recently we introduced a sysctl to tune the max-stack for all events for which callchains were requested: $ sysctl kernel.perf_event_max_stack kernel.perf_event_max_stack = 127 Now this patch introduces a way to configure this per event, i.e. this becomes possible: $ perf record -e sched:*/max-stack=2/ -e block:*/max-stack=10/ -a allowing finer tuning of how much buffer space callchains use. This uses an u16 from the reserved space at the end, leaving another u16 for future use. There has been interest in even finer tuning, namely to control the max stack for kernel and userspace callchains separately. Further discussion is needed, we may for instance use the remaining u16 for that and when it is present, assume that the sample_max_stack introduced in this patch applies for the kernel, and the u16 left is used for limiting the userspace callchain (Arnaldo Carvalho de Melo) - Optimize AUX event (hardware assisted side-band event) delivery (Kan Liang) - Rework Intel family name macro usage (this is partially x86 arch work) (Dave Hansen) - Refine and fix Intel LBR support (David Carrillo-Cisneros) - Add support for Intel 'TopDown' events (Andi Kleen) - Intel uncore PMU driver fixes and enhancements (Kan Liang) - ... other misc changes. Here's an incomplete list of the tooling enhancements (but there's much more, see the shortlog and the git log for details): - Support cross unwinding, i.e. collecting '--call-graph dwarf' perf.data files in one machine and then doing analysis in another machine of a different hardware architecture. This enables, for instance, to do: $ perf record -a --call-graph dwarf on a x86-32 or aarch64 system and then do 'perf report' on it on a x86_64 workstation (He Kuang) - Allow reading from a backward ring buffer (one setup via sys_perf_event_open() with perf_event_attr.write_backward = 1) (Wang Nan) - Finish merging initial SDT (Statically Defined Traces) support, see cset comments for details about how it all works (Masami Hiramatsu) - Support attaching eBPF programs to tracepoints (Wang Nan) - Add demangling of symbols in programs written in the Rust language (David Tolnay) - Add support for tracepoints in the python binding, including an example, that sets up and parses sched:sched_switch events, tools/perf/python/tracepoint.py (Jiri Olsa) - Introduce --stdio-color to set up the color output mode selection in 'annotate' and 'report', allowing emit color escape sequences when redirecting the output of these tools (Arnaldo Carvalho de Melo) - Add 'callindent' option to 'perf script -F', to indent the Intel PT call stack, making this output more ftrace-like (Adrian Hunter, Andi Kleen) - Allow dumping the object files generated by llvm when processing eBPF scriptlet events (Wang Nan) - Add stackcollapse.py script to help generating flame graphs (Paolo Bonzini) - Add --ldlat option to 'perf mem' to specify load latency for loads event (e.g. cpu/mem-loads/ ) (Jiri Olsa) - Tooling support for Intel TopDown counters, recently added to the kernel (Andi Kleen)" * 'perf-core-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (303 commits) perf tests: Add is_printable_array test perf tools: Make is_printable_array global perf script python: Fix string vs byte array resolving perf probe: Warn unmatched function filter correctly perf cpu_map: Add more helpers perf stat: Balance opening and reading events tools: Copy linux/{hash,poison}.h and check for drift perf tools: Remove include/linux/list.h from perf's MANIFEST tools: Copy the bitops files accessed from the kernel and check for drift Remove: kernel unistd*h files from perf's MANIFEST, not used perf tools: Remove tools/perf/util/include/linux/const.h perf tools: Remove tools/perf/util/include/asm/byteorder.h perf tools: Add missing linux/compiler.h include to perf-sys.h perf jit: Remove some no-op error handling perf jit: Add missing curly braces objtool: Initialize variable to silence old compiler objtool: Add -I$(srctree)/tools/arch/$(ARCH)/include/uapi perf record: Add --tail-synthesize option perf session: Don't warn about out of order event if write_backward is used perf tools: Enable overwrite settings ...