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2017-12-04selftests/powerpc: Check for pthread errors in tm-unavailableCyril Bur
Signed-off-by: Cyril Bur <cyrilbur@gmail.com> Signed-off-by: Gustavo Romero <gromero@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
2017-12-03Merge git://git.kernel.org/pub/scm/linux/kernel/git/bpf/bpfDavid S. Miller
Daniel Borkmann says: ==================== pull-request: bpf 2017-12-02 The following pull-request contains BPF updates for your *net* tree. The main changes are: 1) Fix a compilation warning in xdp redirect tracepoint due to missing bpf.h include that pulls in struct bpf_map, from Xie. 2) Limit the maximum number of attachable BPF progs for a given perf event as long as uabi is not frozen yet. The hard upper limit is now 64 and therefore the same as with BPF multi-prog for cgroups. Also add related error checking for the sample BPF loader when enabling and attaching to the perf event, from Yonghong. 3) Specifically set the RLIMIT_MEMLOCK for the test_verifier_log case, so that the test case can always pass and not fail in some environments due to too low default limit, also from Yonghong. 4) Fix up a missing license header comment for kernel/bpf/offload.c, from Jakub. 5) Several fixes for bpftool, among others a crash on incorrect arguments when json output is used, error message handling fixes on unknown options and proper destruction of json writer for some exit cases, all from Quentin. ==================== Signed-off-by: David S. Miller <davem@davemloft.net>
2017-12-03selftests/bpf: add offload test based on netdevsimJakub Kicinski
Add a test of BPF offload control path interfaces based on just-added netdevsim driver. Perform various checks of both the stack and the expected driver behaviour. Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com> Reviewed-by: Simon Horman <simon.horman@netronome.com> Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-12-01selftests/bpf: adjust test_align expected outputAlexei Starovoitov
since verifier started to print liveness state of the registers adjust expected output of test_align. Now this test checks for both proper alignment handling by verifier and correctness of liveness marks. Signed-off-by: Alexei Starovoitov <ast@kernel.org> Acked-by: Daniel Borkmann <daniel@iogearbox.net> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-11-30Merge tag 'pm-4.15-rc2' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm Pull power management fixes from Rafael Wysocki: - add missing module information to the Mediatek cpufreq driver module (Jesse Chan) - fix config dependencies for the Loongson cpufreq driver (James Hogan) - fix two issues related to CPU offline in the cpupower utility (Abhishek Goel). * tag 'pm-4.15-rc2' of git://git.kernel.org/pub/scm/linux/kernel/git/rafael/linux-pm: cpufreq: mediatek: add missing MODULE_DESCRIPTION/AUTHOR/LICENSE cpufreq: Add Loongson machine dependencies cpupower : Fix cpupower working when cpu0 is offline cpupowerutils: bench - Fix cpu online check
2017-11-30tools/bpf: adjust rlimit RLIMIT_MEMLOCK for test_verifier_logYonghong Song
The default rlimit RLIMIT_MEMLOCK is 64KB. In certain cases, e.g. in a test machine mimicking our production system, this test may fail due to unable to charge the required memory for prog load: # ./test_verifier_log Test log_level 0... ERROR: Program load returned: ret:-1/errno:1, expected ret:-1/errno:22 Changing the default rlimit RLIMIT_MEMLOCK to unlimited makes the test always pass. Signed-off-by: Yonghong Song <yhs@fb.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-11-30perf bench futex: Use cpumapsDavidlohr Bueso
It was reported that the whole futex bench breaks when dealing with non-contiguously numbered cpus. $ echo 0 | sudo tee /sys/devices/system/cpu/cpu3/online $ ./perf bench futex all perf: pthread_create: Operation not permitted Run summary [PID 14934]: 7 threads, each .... James had implemented an approach with cpumaps that use an in house flavor. Instead of re-inventing the wheel, I've redone the patch such that we use the perf's util/cpumap.c interface instead. Applies to all futex benchmarks. Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Originally-from: James Yang <james.yang@arm.com> Signed-off-by: Davidlohr Bueso <dbueso@suse.de> Cc: Davidlohr Bueso <dbueso@suse.de> Cc: Kim Phillips <kim.phillips@arm.com> Link: http://lkml.kernel.org/r/20171127042101.3659-2-dave@stgolabs.net Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-30usbip: fix usbip attach to find a port that matches the requested speedShuah Khan
usbip attach fails to find a free port when the device on the first port is a USB_SPEED_SUPER device and non-super speed device is being attached. It keeps checking the first port and returns without a match getting stuck in a loop. Fix it check to find the first port with matching speed. Reported-by: Juan Zea <juan.zea@qindel.com> Signed-off-by: Shuah Khan <shuahkh@osg.samsung.com> Cc: stable <stable@vger.kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-30tools: bpftool: declare phony targets as suchQuentin Monnet
In the Makefile, targets install, doc and doc-install should be added to .PHONY. Let's fix this. Fixes: 71bb428fe2c1 ("tools: bpf: add bpftool") Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-11-30tools: bpftool: unify installation directoriesQuentin Monnet
Programs and documentation not managed by package manager are generally installed under /usr/local/, instead of the user's home directory. In particular, `man` is generally able to find manual pages under `/usr/local/share/man`. bpftool generally follows perf's example, and perf installs to home directory. However bpftool requires root credentials, so it seems sensible to follow the more common convention of installing files under /usr/local instead. So, make /usr/local the default prefix for installing the binary with `make install`, and the documentation with `make doc-install`. Also, create /usr/local/sbin if it does not exist. Note that the bash-completion file, however, is still installed under /usr/share/bash-completion/completions, as the default setup for bash does not attempt to load completion files under /usr/local/. Reported-by: David Beckett <david.beckett@netronome.com> Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-11-30tools: bpftool: remove spurious line break from error messageQuentin Monnet
The end-of-line character inside the string would break JSON compliance. Remove it, `p_err()` already adds a '\n' character for plain output anyway. Fixes: 9a5ab8bf1d6d ("tools: bpftool: turn err() and info() macros into functions") Reported-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-11-30tools: bpftool: make error message from getopt_long() JSON-friendlyQuentin Monnet
If `getopt_long()` meets an unknown option, it prints its own error message to standard error output. While this does not strictly break JSON output, it is the only case bpftool prints something to standard error output if JSON output is required. All other errors are printed on standard output as JSON objects, so that an external program does not have to parse stderr. This is changed by setting the global variable `opterr` to 0. Furthermore, p_err() is used to reproduce the error message in a more JSON-friendly way, so that users still get to know what the erroneous option is. Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-11-30tools: bpftool: clean up the JSON writer before exiting in usage()Quentin Monnet
The writer is cleaned at the end of the main function, but not if the program exits sooner in usage(). Let's keep it clean and destroy the writer before exiting. Destruction and actual call to exit() are moved to another function so that clean exit can also be performed without printing usage() hints. Fixes: d35efba99d92 ("tools: bpftool: introduce --json and --pretty options") Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-11-30tools: bpftool: fix crash on bad parameters with JSONQuentin Monnet
If bad or unrecognised parameters are specified after JSON output is requested, `usage()` will try to output null JSON object before the writer is created. To prevent this, create the writer as soon as the `--json` option is parsed. Fixes: 004b45c0e51a ("tools: bpftool: provide JSON output for all possible commands") Reported-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Quentin Monnet <quentin.monnet@netronome.com> Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
2017-11-29perf intel-pt: Improve build messages for files that differ from the kernelAdrian Hunter
Print file names of files that differ. For example, instead of: Warning: Intel PT: x86 instruction decoder differs from kernel print: Warning: Intel PT: x86 instruction decoder header at 'tools/perf/util/intel-pt-decoder/inat.h' differs from latest version at 'arch/x86/include/asm/inat.h' Reported-by: Ingo Molnar <mingo@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Link: http://lkml.kernel.org/r/1511253326-22308-2-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-29perf report: Fix -D output for user metadata eventsArnaldo Carvalho de Melo
The PERF_RECORD_USER_ events are synthesized by the tool to assist in processing the PERF_RECORD_ ones generated by the kernel, the printing of that information doesn't come with a perf_sample structure, so, when dumping the event fields using 'perf report -D' there were columns that end up not being printed. To tidy up a bit this, fake a perf_sample structure with zeroes to have the missing columns printed and avoid the occasional surprise with that. Before: 0 0x45b8 [0x68]: PERF_RECORD_MMAP -1/0: [0xffffffffc12ec000(0x4000) @ 0]: x /lib/modules/4.14.0+/kernel/fs/nls/nls_utf8.ko 0x4620 [0x28]: PERF_RECORD_THREAD_MAP nr: 1 thread: 27820 0x4648 [0x18]: PERF_RECORD_CPU_MAP: 0-3 0 0x4660 [0x28]: PERF_RECORD_COMM: perf:27820/27820 0x4a58 [0x8]: PERF_RECORD_FINISHED_ROUND 447723433020976 0x4688 [0x28]: PERF_RECORD_SAMPLE(IP, 0x4001): 27820/27820: 0xffffffff8f1b6d7a period: 1 addr: 0 After: $ perf report -D | grep PERF_RECORD_ | head 0 0xe8 [0x20]: PERF_RECORD_TIME_CONV: unhandled! 0 0x108 [0x28]: PERF_RECORD_THREAD_MAP nr: 1 thread: 32555 0 0x130 [0x18]: PERF_RECORD_CPU_MAP: 0-3 0 0x148 [0x28]: PERF_RECORD_COMM: perf:32555/32555 0 0x4e8 [0x8]: PERF_RECORD_FINISHED_ROUND 448743409421205 0x170 [0x28]: PERF_RECORD_COMM exec: sleep:32555/32555 448743409431883 0x198 [0x68]: PERF_RECORD_MMAP2 32555/32555: [0x55e11d75a000(0x208000) @ 0 fd:00 3147174 2566255743]: r-xp /usr/bin/sleep 448743409443873 0x200 [0x70]: PERF_RECORD_MMAP2 32555/32555: [0x7f0ced316000(0x229000) @ 0 fd:00 3151761 2566238119]: r-xp /usr/lib64/ld-2.25.so 448743409454790 0x270 [0x60]: PERF_RECORD_MMAP2 32555/32555: [0x7ffe84f6d000(0x2000) @ 0 00:00 0 0]: r-xp [vdso] 448743409479500 0x2d0 [0x28]: PERF_RECORD_SAMPLE(IP, 0x4002): 32555/32555: 0xffffffff8f84c7e7 period: 1 addr: 0 $ Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.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> Cc: Thomas Gleixner <tglx@linutronix.de> Fixes: 9aefcab0de47 ("perf session: Consolidate the dump code") Link: https://lkml.kernel.org/n/tip-todcu15x0cwgppkh1gi6uhru@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-29perf buildid-cache: Document for Node.js USDTHansuk Hong
Add a tip for Node.js USDT(User-Level Statically Defined Tracing) probes in tips.txt Signed-off-by: Hansuk Hong <flavono123@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lkml.kernel.org/r/20171123160546.9722-1-flavono123@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-29perf script: Allow computing 'perf stat' style metricsAndi Kleen
Add support for computing 'perf stat' style metrics in 'perf script'. When using leader sampling we can get metrics for each sampling period by computing formulas over the values of the different group members. This allows things like fine grained IPC tracking through sampling, much more fine grained than with 'perf stat'. The metric is still averaged over the sampling period, it is not just for the sampling point. This patch adds a new metric output field for 'perf script' that uses the existing 'perf stat' metrics infrastructure to compute any metrics supported by 'perf stat'. For example to sample IPC: $ perf record -e '{ref-cycles,cycles,instructions}:S' -a sleep 1 $ perf script -F metric,ip,sym,time,cpu,comm ... alsa-sink-ALC32 [000] 42815.856074: 7fd65937d6cc [unknown] alsa-sink-ALC32 [000] 42815.856074: 7fd65937d6cc [unknown] alsa-sink-ALC32 [000] 42815.856074: 7fd65937d6cc [unknown] alsa-sink-ALC32 [000] 42815.856074: metric: 0.13 insn per cycle swapper [000] 42815.857961: ffffffff81655df0 __schedule swapper [000] 42815.857961: ffffffff81655df0 __schedule swapper [000] 42815.857961: ffffffff81655df0 __schedule swapper [000] 42815.857961: metric: 0.23 insn per cycle qemu-system-x86 [000] 42815.858130: ffffffff8165ad0e _raw_spin_unlock_irqrestore qemu-system-x86 [000] 42815.858130: ffffffff8165ad0e _raw_spin_unlock_irqrestore qemu-system-x86 [000] 42815.858130: ffffffff8165ad0e _raw_spin_unlock_irqrestore qemu-system-x86 [000] 42815.858130: metric: 0.46 insn per cycle :4972 [000] 42815.858312: ffffffffa080e5f2 vmx_vcpu_run :4972 [000] 42815.858312: ffffffffa080e5f2 vmx_vcpu_run :4972 [000] 42815.858312: ffffffffa080e5f2 vmx_vcpu_run :4972 [000] 42815.858312: metric: 0.45 insn per cycle TopDown: This requires disabling SMT if you have it enabled, because SMT would require sampling per core, which is not supported. $ perf record -e '{ref-cycles,topdown-fetch-bubbles,\ topdown-recovery-bubbles,\ topdown-slots-retired,topdown-total-slots,\ topdown-slots-issued}:S' -a sleep 1 $ perf script --header -I -F cpu,ip,sym,event,metric,period ... [000] 121108 ref-cycles: ffffffff8165222e copy_user_enhanced_fast_string [000] 190350 topdown-fetch-bubbles: ffffffff8165222e copy_user_enhanced_fast_string [000] 2055 topdown-recovery-bubbles: ffffffff8165222e copy_user_enhanced_fast_string [000] 148729 topdown-slots-retired: ffffffff8165222e copy_user_enhanced_fast_string [000] 144324 topdown-total-slots: ffffffff8165222e copy_user_enhanced_fast_string [000] 160852 topdown-slots-issued: ffffffff8165222e copy_user_enhanced_fast_string [000] metric: 33.0% frontend bound [000] metric: 3.5% bad speculation [000] metric: 25.8% retiring [000] metric: 37.7% backend bound [000] 112112 ref-cycles: ffffffff8165aec8 _raw_spin_lock_irqsave [000] 357222 topdown-fetch-bubbles: ffffffff8165aec8 _raw_spin_lock_irqsave [000] 3325 topdown-recovery-bubbles: ffffffff8165aec8 _raw_spin_lock_irqsave [000] 323553 topdown-slots-retired: ffffffff8165aec8 _raw_spin_lock_irqsave [000] 270507 topdown-total-slots: ffffffff8165aec8 _raw_spin_lock_irqsave [000] 341226 topdown-slots-issued: ffffffff8165aec8 _raw_spin_lock_irqsave [000] metric: 33.0% frontend bound [000] metric: 2.9% bad speculation [000] metric: 29.9% retiring [000] metric: 34.2% backend bound ... v2: Use evsel->priv for new fields Port to new base line, support fp output. Handle stats in ->stats, not ->priv Minor cleanups Extra explanation about the use of the term 'averaging', from Andi in the thread in the Link: tag below: <quote Andi> The current samples contains the sum of event counts for a sampling period. EventA-1 EventA-2 EventA-3 EventA-4 EventB-1 EventB-2 EventC-3 gap with no events overflow |-----------------------------------------------------------------| period-start period-end ^ ^ | | previous sample current sample So EventA = 4 and EventB = 3 at the sample point I generate a metric, let's say EventA / EventB. It applies to the whole period. But the metric is over a longer time which does not have the same behavior. For example the gap above doesn't have any events, while they are clustered at the beginning and end of the sample period. But we're summing everything together. The metric doesn't know that the gap is different than the busy period. That's what I'm trying to express with averaging. </quote> Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20171117214300.32746-4-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-29perf record: Synthesize thread map and cpu mapAndi Kleen
Synthesize the per attr thread maps and cpu maps in 'perf record'. This allows code from 'perf stat' called from 'perf script' to access this information. Committer testing: Please see the PERF_RECORD_THREAD_MAP and PERF_RECORD_CPU_MAP records, added by this patch: $ perf record sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.001 MB perf.data (8 samples) ] $ perf report -D | grep PERF_RECORD_ | head 0xe8 [0x20]: PERF_RECORD_TIME_CONV: unhandled! 0x108 [0x28]: PERF_RECORD_THREAD_MAP nr: 1 thread: 23568 0x130 [0x18]: PERF_RECORD_CPU_MAP: 0-3 0 0x148 [0x28]: PERF_RECORD_COMM: perf:23568/23568 0x570 [0x8]: PERF_RECORD_FINISHED_ROUND 445342677837144 0x170 [0x28]: PERF_RECORD_COMM exec: sleep:23568/23568 445342677847339 0x198 [0x68]: PERF_RECORD_MMAP2 23568/23568: [0x564c943a4000(0x208000) @ 0 fd:00 3147174 2566255743]: r-xp /usr/bin/sleep 445342677862450 0x200 [0x70]: PERF_RECORD_MMAP2 23568/23568: [0x7f25968a8000(0x229000) @ 0 fd:00 3151761 2566238119]: r-xp /usr/lib64/ld-2.25.so 445342677873174 0x270 [0x60]: PERF_RECORD_MMAP2 23568/23568: [0x7ffc98176000(0x2000) @ 0 00:00 0 0]: r-xp [vdso] 445342677891928 0x2d0 [0x28]: PERF_RECORD_SAMPLE(IP, 0x4002): 23568/23568: 0xffffffff8f84c7e7 period: 1 addr: 0 $ Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Link: http://lkml.kernel.org/r/20171117214300.32746-3-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-29perf record: Synthesize unit/scale/... in event updateAndi Kleen
Move the code to synthesize event updates for scale/unit/cpus to a common utility file, and use it both from stat and record. This allows to access scale and other extra qualifiers from perf script. Signed-off-by: Andi Kleen <ak@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: http://lkml.kernel.org/r/20171117214300.32746-2-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-29perf test: Disable test cases 19 and 20 on s390xThomas Richter
The s390x CPU sampling and measurement facilities do not support perf events of type PERF_TYPE_BREAKPOINT. The test cases are executed and fail with -ENOENT due to missing hardware support. Disable the execution of both test cases based on a platform check. This is the same approach as done for PowerPC. Signed-off-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Reviewed-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> LPU-Reference: 20171123074623.20817-1-tmricht@linux.vnet.ibm.com Link: https://lkml.kernel.org/n/tip-uqvoy6a1tsu8jddo5jjg4h85@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-29tools headers: Follow the upstream UAPI header version 100% differ from the ↵Ingo Molnar
kernel Remove this from check-headers.sh: opts="--ignore-blank-lines --ignore-space-change" as the easiest policy is to just follow the upstream UAPI header version 100%. Pure space-only changes are comparatively rare. Signed-off-by: Ingo Molnar <mingo@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Link: http://lkml.kernel.org/r/20171121084111.y6p5zwqso2cbms5s@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-29test_firmware: wrap custom sysfs load tests into helperLuis R. Rodriguez
These can run on certain kernel configs. This will allow us later to enable these tests under the right kernel configurations. Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-29test_firmware: wrap basic sysfs fallback tests into helperLuis R. Rodriguez
These cannot run on all kernel builds. This will help us later skip this test on kernel configs where non-applicable. Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-29test_firmware: wrap sysfs timeout test into helperLuis R. Rodriguez
This cannot run on all kernel builds. This will help us later skip this test on kernel configs where non-applicable. Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-29test_firmware: fix setting old custom fw path back on exitLuis R. Rodriguez
The file /sys/module/firmware_class/parameters/path can be used to set a custom firmware path. The fw_filesystem.sh script creates a temporary directory to add a test firmware file to be used during testing, in order for this to work it uses the custom path syfs file and it was supposed to reset back the file on execution exit. The script failed to do this due to a typo, it was using OLD_PATH instead of OLD_FWPATH, since its inception since v3.17. Its not as easy to just keep the old setting, it turns out that resetting an empty setting won't actually do what we want, we need to check if it was empty and set an empty space. Without this we end up having the temporary path always set after we run these tests. Fixes: 0a8adf58475 ("test: add firmware_class loader test") Signed-off-by: Luis R. Rodriguez <mcgrof@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2017-11-29Merge branch 'perf/urgent' into perf/core, to pick up fixesIngo Molnar
Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-11-28torture: Prepare scripting for shift from %p to %pKPaul E. McKenney
Because %p prints "(null)" and %pK prints "0000000000000000" or (on 32-bit systems) "00000000", this commit adjusts torture-test scripting accordingly. Signed-off-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
2017-11-28tools headers: Syncronize mman.h ABI headerArnaldo Carvalho de Melo
To add support for the MAP_SYNC flag introduced in: b6fb293f2497 ("mm: Define MAP_SYNC and VM_SYNC flags") Update tools/perf/trace/beauty/mmap.c to support that flag. This silences this perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/asm-generic/mman.h' differs from latest version at 'include/uapi/asm-generic/mman.h' Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Dan Williams <dan.j.williams@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jan Kara <jack@suse.cz> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-14zyk3iywrj37c7g1eagmzbo@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-28tools headers: Synchronize prctl.h ABI headerArnaldo Carvalho de Melo
To pick up changes from: 2d2123bc7c7f ("arm64/sve: Add prctl controls for userspace vector length management") 7582e22038a2 ("arm64/sve: Backend logic for setting the vector length") That showed a limitation of the regexp used in tools/perf/trace/beauty/prctl_option.sh, that matches only PR_{SET,GET}_, but should match a few more, like PR_MPX_*, PR_CAP_* and the one added by the above commit, PR_SVE_SET_*. This silences this warning when building tools/perf: Warning: Kernel ABI header at 'tools/include/uapi/linux/prctl.h' differs from latest version at 'include/uapi/linux/prctl.h' Support for those extra prctl options should be left for the next merge window tho. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Dave Martin <Dave.Martin@arm.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> Cc: Will Deacon <will.deacon@arm.com> Link: https://lkml.kernel.org/n/tip-r52dsyuzy04qzqyfcifjs35t@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-28tools headers: Synchronize KVM arch ABI headersArnaldo Carvalho de Melo
To pick up changes from these csets: da9a1446d248 ("KVM: s390: provide a capability for AIS state migration") 5c5196da4e96 ("KVM: arm/arm64: Support EL1 phys timer register access in set/get reg") None of which affects buildint tools/perf/. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Christian Borntraeger <borntraeger@de.ibm.com> Cc: Christoffer Dall <cdall@linaro.org> 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: https://lkml.kernel.org/n/tip-dd72s6izo4qdzt1isowlz8ji@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-28tools headers: Synchronize drm/i915_drm.hArnaldo Carvalho de Melo
To pick up the changes from these csets: bf64e0b00e1f ("drm/i915: Expand I915_PARAM_HAS_SCHEDULER into a capability bitmask") ac14fbd460d0 ("drm/i915/scheduler: Support user-defined priorities") 822a4b673284 ("drm/i915: Don't use BIT() in UAPI section") 3fd3a6ffe279 ("drm/i915: Simplify i915_reg_read_ioctl") None of them affects how the tools are built, this os done just to silence this perf build warning: Warning: Kernel ABI header at 'tools/include/uapi/drm/i915_drm.h' differs from latest version at 'include/uapi/drm/i915_drm.h' Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Chris Wilson <chris@chris-wilson.co.uk> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-d2gor8brpcowe7bcxovjhqwm@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-28tools headers uapi: Synchronize drm/drm.hArnaldo Carvalho de Melo
To pick up the new ioctls added in these csets: 3064abfa932b ("drm: Add CRTC_GET_SEQUENCE and CRTC_QUEUE_SEQUENCE ioctls [v3]") 62884cd386b8 ("drm: Add four ioctls for managing drm mode object leases [v7]") That will be automatically decoded (the ioctl cmd parameter, the structs will be supported when we start using eBPF for that, which is in the works). This silences this warning when building tools/perf: Warning: Kernel ABI header at 'tools/include/uapi/drm/drm.h' differs from latest version at 'include/uapi/drm/drm.h' Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Dave Airlie <airlied@redhat.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Keith Packard <keithp@keithp.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: https://lkml.kernel.org/n/tip-bivwf1pkfmi1ugpswbsxd9e9@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-28tools headers: Synchronize perf_event.h headerArnaldo Carvalho de Melo
To get the changes in the 085b30625e39 ("perf/core: Add PERF_AUX_FLAG_COLLISION to report colliding samples") commit, that will be eventually used by perf to handle the ARM SPE architecture. 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> Cc: Will Deacon <will.deacon@arm.com> Link: https://lkml.kernel.org/n/tip-178ohv0oy0csq3kzfdk8ky4n@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-28tools headers: Synchronize kernel ABI headers wrt SPDX tagsArnaldo Carvalho de Melo
Two more, that were just in perf/core and thus weren't covered by Ingo's latest headers synch, kcmp.h and prctl.h, silencing this: Warning: Kernel ABI header at 'tools/include/uapi/linux/kcmp.h' differs from latest version at 'include/uapi/linux/kcmp.h' Warning: Kernel ABI header at 'tools/include/uapi/linux/prctl.h' differs from latest version at 'include/uapi/linux/prctl.h' 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-2a0r7iybyqpkftllyy5t9hfk@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-28tools/headers: Synchronize kernel x86 UAPI headersIngo Molnar
Two x86 headers got modified in this merge window: arch/x86/include/asm/cpufeatures.h arch/x86/include/asm/disabled-features.h To support x86 UMIP feature, to add new AVX instructions, plus cleanups. None of those changes have an effect on tooling, so do a plain copy. Cc: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar <mingo@kernel.org>
2017-11-28perf intel-pt: Bring instruction decoder files into line with the kernelAdrian Hunter
There are just a few new defines which do not affect perf tools. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Link: http://lkml.kernel.org/r/1511253326-22308-3-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-28perf test: Fix test 21 for s390xThomas Richter
Test case 21 (Number of exit events of a simple workload) fails on s390x. The reason is the invalid sample frequency supplied for this test. On s390x the minimum sample frequency is much higher (see output of /proc/service_levels). Supply a save sample frequency value for s390x to fix this. The value will be adjusted by the s390x CPUMF frequency convertion function to a value well below the sysctl kernel.perf_event_max_sample_rate value. Signed-off-by: Thomas Richter <tmricht@linux.vnet.ibm.com> Reviewed-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> LPU-Reference: 20171123114611.93397-1-tmricht@linux.vnet.ibm.com Link: https://lkml.kernel.org/n/tip-1ynblyhi1n81idpido59nt1y@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-28perf bench numa: Fixup discontiguous/sparse numa nodesSatheesh Rajendran
Certain systems are designed to have sparse/discontiguous nodes. On such systems, 'perf bench numa' hangs, shows wrong number of nodes and shows values for non-existent nodes. Handle this by only taking nodes that are exposed by kernel to userspace. Signed-off-by: Satheesh Rajendran <sathnaga@linux.vnet.ibm.com> Reviewed-by: Srikar Dronamraju <srikar@linux.vnet.ibm.com> Acked-by: Naveen N. Rao <naveen.n.rao@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/1edbcd353c009e109e93d78f2f46381930c340fe.1511368645.git.sathnaga@linux.vnet.ibm.com Signed-off-by: Balamuruhan S <bala24@linux.vnet.ibm.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-28perf top: Use signal interface for SIGWINCH handlerJiri Olsa
There's no need for SA_SIGINFO data in SIGWINCH handler, switching it to register the handler via signal interface as we do for the rest of the signals in perf top. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-elxp1vdnaog1scaj13cx7cu0@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-28perf top: Fix window dimensions change handlingJiri Olsa
The stdio perf top crashes when we change the terminal window size. The reason is that we assumed we get the perf_top pointer as a signal handler argument which is not the case. Changing the SIGWINCH handler logic to change global resize variable, which is checked in the main thread loop. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Tested-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <andi@firstfloor.org> Cc: David Ahern <dsahern@gmail.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-ysuzwz77oev1ftgvdscn9bpu@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-28perf top: Ignore kptr_restrict when not sampling the kernelArnaldo Carvalho de Melo
If all events have attr.exclude_kernel set, no need to look at kptr_restrict. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-yegpzg5bf2im69g0tfizqaqz@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-28perf record: Ignore kptr_restrict when not sampling the kernelArnaldo Carvalho de Melo
If we're not sampling the kernel, we shouldn't care about kptr_restrict neither synthesize anything for assisting in resolving kernel samples, like the reference relocation symbol or kernel modules information. Before: $ cat /proc/sys/kernel/kptr_restrict /proc/sys/kernel/perf_event_paranoid 2 2 $ perf record sleep 1 WARNING: Kernel address maps (/proc/{kallsyms,modules}) are restricted, check /proc/sys/kernel/kptr_restrict. Samples in kernel functions may not be resolved if a suitable vmlinux file is not found in the buildid cache or in the vmlinux path. Samples in kernel modules won't be resolved at all. If some relocation was applied (e.g. kexec) symbols may be misresolved even with a suitable vmlinux or kallsyms file. Couldn't record kernel reference relocation symbol Symbol resolution may be skewed if relocation was used (e.g. kexec). Check /proc/kallsyms permission or run as root. [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.001 MB perf.data (8 samples) ] $ perf evlist -v cycles:uppp: size: 112, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|PERIOD, disabled: 1, inherit: 1, exclude_kernel: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, task: 1, precise_ip: 3, sample_id_all: 1, exclude_guest: 1, mmap2: 1, comm_exec: 1 $ After: $ perf record sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.001 MB perf.data (10 samples) ] $ Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-t025e9zftbx2b8cq2w01g5e5@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-28perf report: Ignore kptr_restrict when not sampling the kernelArnaldo Carvalho de Melo
If none of the evsels has attr.exclude_kernel set to zero, no kernel samples, so no point in warning the user about problems in processing kernel samples, as there will be none. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-7dn926v3at8txxkky92aesz2@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-28perf evlist: Add helper to check if attr.exclude_kernel is set in all evselsArnaldo Carvalho de Melo
The warning about kptr_restrict needs to be emitted only when it is set and we ask for kernel space samples, so add a helper to help with that. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lkml.kernel.org/n/tip-fh7drty6yljei9gxxzer6eup@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-28perf test shell: Fix test case probe libc's inet_pton on s390xThomas Richter
The 'perf test' case "probe libc's inet_pton & backtrace it with ping" fails on s390x. The reason is the 'realpath /lib64/ld*.so.* | uniq' line which returns 2 libraries: root@s35lp76 shell]# realpath /lib64/ld*.so.* | uniq /usr/lib64/ld-2.26.so /usr/lib64/ld_pre_smc.so.1.0.1 [root@s35lp76 shell] This output makes the "perf probe" command lines invalid. Use ldd tool to find out the libraries required by "bash" and check if symbol "inet_pton" is part of the "libc" library. Some distros do not have a /lib64 directory. I have also added a check for the existence of an IPv6 network interface before it is being used. Committer changes: We can't really use ldd for libc, as in some systems, such as x86_64, it has hardlinks and then ldd sees one and the kernel the other, so grep for libc in /proc/self/maps to get the one we'll receive from PERF_RECORD_MMAP. Thomas checked this change and acked it. Signed-off-by: Thomas-Mich Richter <tmricht@linux.vnet.ibm.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Suggested-by: Hendrik Brückner <brueckner@linux.vnet.ibm.com> Reviewed-by: Hendrik Brückner <brueckner@linux.vnet.ibm.com> Link: http://lkml.kernel.org/r/20171114133409.GN8836@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-28perf test shell: Fix check open filename arg using 'perf trace' on s390xThomas Richter
This 'perf test' case fails on s390x. The 'touch' command on s390x uses the 'openat' system call to open the file named on the command line: [root@s35lp76 perf]# perf probe -l probe:vfs_getname (on getname_flags:72@fs/namei.c with pathname) [root@s35lp76 perf]# perf trace -e open touch /tmp/abc 0.400 ( 0.015 ms): touch/27542 open(filename: /usr/lib/locale/locale-archive, flags: CLOEXEC) = 3 [root@s35lp76 perf]# There is no 'open' system call for file '/tmp/abc'. Instead the 'openat' system call is used: [root@s35lp76 perf]# strace touch /tmp/abc execve("/usr/bin/touch", ["touch", "/tmp/abc"], 0x3ffd547ec98 /* 30 vars */) = 0 [...] openat(AT_FDCWD, "/tmp/abc", O_WRONLY|O_CREAT|O_NOCTTY|O_NONBLOCK, 0666) = 3 [...] On s390x the 'egrep' command does not find a matching pattern and returns an error. Fix this for s390x create a platform dependent command line to enable the 'perf probe' call to listen to the 'openat' system call and get the expected output. Signed-off-by: Thomas-Mich Richter <tmricht@linux.vnet.ibm.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Hendrik Brueckner <brueckner@linux.vnet.ibm.com> Cc: Thomas-Mich Richter <tmricht@linux.vnet.ibm.com> LPU-Reference: 20171114071847.2381-1-tmricht@linux.vnet.ibm.com Link: http://lkml.kernel.org/n/tip-3qf38jk0prz54rhmhyu871my@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-28perf annotate: Do not truncate instruction names at 6 charsRavi Bangoria
There are many instructions, esp on PowerPC, whose mnemonics are longer than 6 characters. Using precision limit causes truncation of such mnemonics. Fix this by removing precision limit. Note that, 'width' is still 6, so alignment won't get affected for length <= 6. Before: li r11,-1 xscvdp vs1,vs1 add. r10,r10,r11 After: li r11,-1 xscvdpsxds vs1,vs1 add. r10,r10,r11 Reported-by: Donald Stence <dstence@us.ibm.com> Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Taeung Song <treeze.taeung@gmail.com> Link: http://lkml.kernel.org/r/20171114032540.4564-1-ravi.bangoria@linux.vnet.ibm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-28perf help: Fix a bug during strstart() conversionNamhyung Kim
The commit 8e99b6d4533c changed prefixcmp() to strstart() but missed to change the return value in some place. It makes perf help print annoying output even for sane config items like below: $ perf help '.root': unsupported man viewer sub key. ... Reported-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Tested-by: Taeung Song <treeze.taeung@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Sihyeon Jang <uneedsihyeon@gmail.com> Cc: kernel-team@lge.com Link: http://lkml.kernel.org/r/20171114001542.GA16464@sejong Fixes: 8e99b6d4533c ("tools include: Adopt strstarts() from the kernel") Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2017-11-28perf machine: Guard against NULL in machine__exit()Arnaldo Carvalho de Melo
A recent fix for 'perf trace' introduced a bug where machine__exit(trace->host) could be called while trace->host was still NULL, so make this more robust by guarding against NULL, just like free() does. The problem happens, for instance, when !root users try to run 'perf trace': [acme@jouet linux]$ trace Error: No permissions to read /sys/kernel/debug/tracing/events/raw_syscalls/sys_(enter|exit) Hint: Try 'sudo mount -o remount,mode=755 /sys/kernel/debug/tracing' perf: Segmentation fault Obtained 7 stack frames. [0x4f1b2e] /lib64/libc.so.6(+0x3671f) [0x7f43a1dd971f] [0x4f3fec] [0x47468b] [0x42a2db] /lib64/libc.so.6(__libc_start_main+0xe9) [0x7f43a1dc3509] [0x42a6c9] Segmentation fault (core dumped) [acme@jouet linux]$ Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andrei Vagin <avagin@openvz.org> Cc: David Ahern <dsahern@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Vasily Averin <vvs@virtuozzo.com> Cc: Wang Nan <wangnan0@huawei.com> Fixes: 33974a414ce2 ("perf trace: Call machine__exit() at exit") Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
generated by cgit (git 2.34.1) at 2025-09-12 20:02:47 +0000