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2020-04-03Revert "cpuset: Make cpuset hotplug synchronous"Tejun Heo
This reverts commit a49e4629b5ed ("cpuset: Make cpuset hotplug synchronous") as it may deadlock with cpu hotplug path. Link: http://lkml.kernel.org/r/F0388D99-84D7-453B-9B6B-EEFF0E7BE4CC@lca.pw Signed-off-by: Tejun Heo <tj@kernel.org> Reported-by: Qian Cai <cai@lca.pw> Cc: Prateek Sood <prsood@codeaurora.org>
2020-04-03tracing: Do not allocate buffer in trace_find_next_entry() in atomicSteven Rostedt (VMware)
When dumping out the trace data in latency format, a check is made to peek at the next event to compare its timestamp to the current one, and if the delta is of a greater size, it will add a marker showing so. But to do this, it needs to save the current event otherwise peeking at the next event will remove the current event. To save the event, a temp buffer is used, and if the event is bigger than the temp buffer, the temp buffer is freed and a bigger buffer is allocated. This allocation is a problem when called in atomic context. The only way this gets called via atomic context is via ftrace_dump(). Thus, use a static buffer of 128 bytes (which covers most events), and if the event is bigger than that, simply return NULL. The callers of trace_find_next_entry() need to handle a NULL case, as that's what would happen if the allocation failed. Link: https://lore.kernel.org/r/20200326091256.GR11705@shao2-debian Fixes: ff895103a84ab ("tracing: Save off entry when peeking at next entry") Reported-by: kernel test robot <rong.a.chen@intel.com> Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
2020-04-03dm integrity: fix ppc64le warningMike Snitzer
Otherwise: In file included from drivers/md/dm-integrity.c:13: drivers/md/dm-integrity.c: In function 'dm_integrity_status': drivers/md/dm-integrity.c:3061:10: error: format '%llu' expects argument of type 'long long unsigned int', but argument 4 has type 'long int' [-Werror=format=] DMEMIT("%llu %llu", ^~~~~~~~~~~ atomic64_read(&ic->number_of_mismatches), ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ ./include/linux/device-mapper.h:550:46: note: in definition of macro 'DMEMIT' 0 : scnprintf(result + sz, maxlen - sz, x)) ^ cc1: all warnings being treated as errors Fixes: 7649194a1636ab5 ("dm integrity: remove sector type casts") Signed-off-by: Mike Snitzer <snitzer@redhat.com>
2020-04-03perf python: Fix clang detection to strip out options passed in $CCArnaldo Carvalho de Melo
The clang check in the python setup.py file expected $CC to be just the name of the compiler, not the compiler + options, i.e. all options were expected to be passed in $CFLAGS, this ends up making it fail in systems where CC is set to, e.g.: "aarch64-linaro-linux-gcc --sysroot=/oe/build/tmp/work/juno-linaro-linux/perf/1.0-r9/recipe-sysroot" Like this: $ python3 >>> from subprocess import Popen >>> a = Popen(["aarch64-linux-gnu-gcc --sysroot=/oe/build/tmp/work/juno-linaro-linux/perf/1.0-r9/recipe-sysroot", "-v"]) Traceback (most recent call last): File "<stdin>", line 1, in <module> File "/usr/lib/python3.6/subprocess.py", line 729, in __init__ restore_signals, start_new_session) File "/usr/lib/python3.6/subprocess.py", line 1364, in _execute_child raise child_exception_type(errno_num, err_msg, err_filename) FileNotFoundError: [Errno 2] No such file or directory: 'aarch64-linux-gnu-gcc --sysroot=/oe/build/tmp/work/juno-linaro-linux/perf/1.0-r9/recipe-sysroot': 'aarch64-linux-gnu-gcc --sysroot=/oe/build/tmp/work/juno-linaro-linux/perf/1.0-r9/recipe-sysroot' >>> Make it more robust, covering this case, by passing cc.split()[0] as the first arg to popen(). Fixes: a7ffd416d804 ("perf python: Fix clang detection when using CC=clang-version") Reported-by: Daniel Díaz <daniel.diaz@linaro.org> Reported-by: Naresh Kamboju <naresh.kamboju@linaro.org> Tested-by: Daniel Díaz <daniel.diaz@linaro.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ilie Halip <ilie.halip@gmail.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lore.kernel.org/lkml/20200401124037.GA12534@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-03perf tools: Support Python 3.8+ in MakefileSam Lunt
Python 3.8 changed the output of 'python-config --ldflags' to no longer include the '-lpythonX.Y' flag (this apparently fixed an issue loading modules with a statically linked Python executable). The libpython feature check in linux/build/feature fails if the Python library is not included in FEATURE_CHECK_LDFLAGS-libpython variable. This adds a check in the Makefile to determine if PYTHON_CONFIG accepts the '--embed' flag and passes that flag alongside '--ldflags' if so. tools/perf is the only place the libpython feature check is used. Signed-off-by: Sam Lunt <samuel.j.lunt@gmail.com> Tested-by: He Zhe <zhe.he@windriver.com> Link: http://lore.kernel.org/lkml/c56be2e1-8111-9dfe-8298-f7d0f9ab7431@windriver.com Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: trivial@kernel.org Cc: stable@kernel.org Link: http://lore.kernel.org/lkml/20200131181123.tmamivhq4b7uqasr@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-03perf script: Fix invalid read of directory entry after closedir()Andreas Gerstmayr
closedir(lang_dir) frees the memory of script_dirent->d_name, which gets accessed in the next line in a call to scnprintf(). Valgrind report: Invalid read of size 1 ==413557== at 0x483CBE6: strlen (vg_replace_strmem.c:461) ==413557== by 0x4DD45FD: __vfprintf_internal (vfprintf-internal.c:1688) ==413557== by 0x4DE6679: __vsnprintf_internal (vsnprintf.c:114) ==413557== by 0x53A037: vsnprintf (stdio2.h:80) ==413557== by 0x53A037: scnprintf (vsprintf.c:21) ==413557== by 0x435202: get_script_path (builtin-script.c:3223) ==413557== Address 0x52e7313 is 1,139 bytes inside a block of size 32,816 free'd ==413557== at 0x483AA0C: free (vg_replace_malloc.c:540) ==413557== by 0x4E303C0: closedir (closedir.c:50) ==413557== by 0x4351DC: get_script_path (builtin-script.c:3222) Signed-off-by: Andreas Gerstmayr <agerstmayr@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20200402124337.419456-1-agerstmayr@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-03perf script report: Fix SEGFAULT when using DWARF modeAndreas Gerstmayr
When running perf script report with a Python script and a callgraph in DWARF mode, intr_regs->regs can be 0 and therefore crashing the regs_map function. Added a check for this condition (same check as in builtin-script.c:595). Signed-off-by: Andreas Gerstmayr <agerstmayr@redhat.com> Tested-by: Kim Phillips <kim.phillips@amd.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200402125417.422232-1-agerstmayr@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-03perf script: add -S/--symbols documentationIan Rogers
Capture both that this option exists and that symbols can be hexadecimal addresses. Signed-off-by: Ian Rogers <irogers@google.com> Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20200402174130.140319-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-03perf pmu-events x86: Use CPU_CLK_UNHALTED.THREAD in Kernel_Utilization metricJin Yao
The kernel utilization metric does multiplexing currently and is somewhat unreliable. The problem is that it uses two instances of the fixed counter, and the kernel has to multipleplex which causes errors. So should use CPU_CLK_UNHALTED.THREAD instead. Before: # perf stat -M Kernel_Utilization -- sleep 1 Performance counter stats for 'sleep 1': 1,419,425 cpu_clk_unhalted.ref_tsc:k <not counted> cpu_clk_unhalted.ref_tsc (0.00%) After: # perf stat -M Kernel_Utilization -- sleep 1 Performance counter stats for 'sleep 1': 746,688 cpu_clk_unhalted.thread:k # 0.7 Kernel_Utilization 1,088,348 cpu_clk_unhalted.thread Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Reviewed-by: Kan Liang <kan.liang@linux.intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jin Yao <yao.jin@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20200309013125.7559-1-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-03perf events parser: Add missing Intel CPU events to parserAdrian Hunter
perf list expects CPU events to be parseable by name, e.g. # perf list | grep el-capacity-read el-capacity-read OR cpu/el-capacity-read/ [Kernel PMU event] But the event parser does not recognize them that way, e.g. # perf test -v "Parse event" <SNIP> running test 54 'cycles//u' running test 55 'cycles:k' running test 0 'cpu/config=10,config1,config2=3,period=1000/u' running test 1 'cpu/config=1,name=krava/u,cpu/config=2/u' running test 2 'cpu/config=1,call-graph=fp,time,period=100000/,cpu/config=2,call-graph=no,time=0,period=2000/' running test 3 'cpu/name='COMPLEX_CYCLES_NAME:orig=cycles,desc=chip-clock-ticks',period=0x1,event=0x2/ukp' -> cpu/event=0,umask=0x11/ -> cpu/event=0,umask=0x13/ -> cpu/event=0x54,umask=0x1/ failed to parse event 'el-capacity-read:u,cpu/event=el-capacity-read/u', err 1, str 'parser error' event syntax error: 'el-capacity-read:u,cpu/event=el-capacity-read/u' \___ parser error test child finished with 1 ---- end ---- Parse event definition strings: FAILED! This happens because the parser splits names by '-' in order to deal with cache events. For example 'L1-dcache' is a token in parse-events.l which is matched to 'L1-dcache-load-miss' by the following rule: PE_NAME_CACHE_TYPE '-' PE_NAME_CACHE_OP_RESULT '-' PE_NAME_CACHE_OP_RESULT opt_event_config And so there is special handling for 2-part PMU names i.e. PE_PMU_EVENT_PRE '-' PE_PMU_EVENT_SUF sep_dc but no handling for 3-part names, which are instead added as tokens e.g. topdown-[a-z-]+ While it would be possible to add a rule for 3-part names, that would not work if the first parts were also a valid PMU name e.g. 'el-capacity-read' would be matched to 'el-capacity' before the parser reached the 3rd part. The parser would need significant change to rationalize all this, so instead fix for now by adding missing Intel CPU events with 3-part names to the event parser as tokens. Missing events were found by using: grep -r EVENT_ATTR_STR arch/x86/events/intel/core.c Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Kan Liang <kan.liang@linux.intel.com> Link: http://lore.kernel.org/lkml/90c7ae07-c568-b6d3-f9c4-d0c1528a0610@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-03perf script: Allow --symbol to accept hexadecimal addressesStephane Eranian
This patch extends the perf script --symbols option to filter on hexadecimal addresses in addition to symbol names. This makes it easier to handle cases where symbols are aliased. With this patch, it is possible to mix and match symbols and hexadecimal addresses using the --symbols option. $ perf script --symbols=noploop,0x4007a0 Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20200325220802.15039-1-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-03perf report/top TUI: Fix title line formattingArnaldo Carvalho de Melo
In d10ec006dcd7 ("perf hists browser: Allow passing an initial hotkey") the hist_entry__title() call was cut'n'pasted to a function where the 'title' variable is a pointer, not an array, so the sizeof(title) continues syntactically valid but ends up reducing the real size of the buffer where to format the first line in the screen to 8 bytes, which makes the formatting at the title at each refresh to produce just the string "Samples ", duh, fix it by passing the size of the buffer. Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Fixes: d10ec006dcd7 ("perf hists browser: Allow passing an initial hotkey") Link: http://lore.kernel.org/lkml/20200330154314.GB4576@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-03perf top: Support hotkey to change sort orderJin Yao
It would be nice if we can use a hotkey in perf top browser to select a event for sorting. For example: perf top --group -e cycles,instructions,cache-misses Samples Overhead Shared Object Symbol 40.03% 45.71% 0.03% div [.] main 20.46% 14.67% 0.21% libc-2.27.so [.] __random_r 20.01% 19.54% 0.02% libc-2.27.so [.] __random 9.68% 10.68% 0.00% div [.] compute_flag 4.32% 4.70% 0.00% libc-2.27.so [.] rand 3.84% 3.43% 0.00% div [.] rand@plt 0.05% 0.05% 2.33% libc-2.27.so [.] __strcmp_sse2_unaligned 0.04% 0.08% 2.43% perf [.] perf_hpp__is_dynamic_en 0.04% 0.02% 6.64% perf [.] rb_next 0.04% 0.01% 3.87% perf [.] dso__find_symbol 0.04% 0.04% 1.77% perf [.] sort__dso_cmp When user press hotkey '2' (event index, starting from 0), it indicates to sort output by the third event in group (cache-misses). Samples Overhead Shared Object Symbol 4.07% 1.28% 6.68% perf [.] rb_next 3.57% 3.98% 4.11% perf [.] __hists__insert_output 3.67% 11.24% 3.60% perf [.] perf_hpp__is_dynamic_e 3.67% 3.20% 3.20% perf [.] hpp__sort_overhead 0.81% 0.06% 3.01% perf [.] dso__find_symbol 1.62% 5.47% 2.51% perf [.] hists__match 2.70% 1.86% 2.47% libc-2.27.so [.] _int_malloc 0.19% 0.00% 2.29% [kernel] [k] copy_page 0.41% 0.32% 1.98% perf [.] hists__decay_entries 1.84% 3.67% 1.68% perf [.] sort__dso_cmp 0.16% 0.00% 1.63% [kernel] [k] clear_page_erms Now the output is sorted by cache-misses. v2: --- Zero the history if hotkey is pressed. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jin Yao <yao.jin@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20200324220711.6025-2-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-03perf top: Support --group-sort-idx to change the sort orderJin Yao
'perf report' supports the option --group-sort-idx, which sorts the output by the event at the index n in event group. For example: perf record -e cycles,instructions,cache-misses perf report --group --group-sort-idx 2 --stdio The perf-report output is sorted by cache-misses. This patch supports --group-sort-idx in perf-top. For example: perf top --group -e cycles,instructions,cache-misses --group-sort-idx 2 The perf-top output is sorted by cache-misses. Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jin Yao <yao.jin@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20200324220711.6025-1-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-03perf symbols: Fix arm64 gap between kernel start and module endKemeng Shi
During execution of command 'perf report' in my arm64 virtual machine, this error message is showed: failed to process sample __symbol__inc_addr_samples(860): ENOMEM! sym->name=__this_module, start=0x1477100, addr=0x147dbd8, end=0x80002000, func: 0 The error is caused with path: cmd_report __cmd_report perf_session__process_events __perf_session__process_events ordered_events__flush __ordered_events__flush oe->deliver (ordered_events__deliver_event) perf_session__deliver_event machines__deliver_event perf_evlist__deliver_sample tool->sample (process_sample_event) hist_entry_iter__add iter->add_entry_cb(hist_iter__report_callback) hist_entry__inc_addr_samples symbol__inc_addr_samples __symbol__inc_addr_samples h = annotated_source__histogram(src, evidx) (NULL) annotated_source__histogram failed is caused with path: ... hist_entry__inc_addr_samples symbol__inc_addr_samples symbol__hists annotated_source__alloc_histograms src->histograms = calloc(nr_hists, sizeof_sym_hist) (failed) Calloc failed as the symbol__size(sym) is too huge. As show in error message: start=0x1477100, end=0x80002000, size of symbol is about 2G. This is the same problem as 'perf annotate: Fix s390 gap between kernel end and module start (b9c0a64901d5bd)'. Perf gets symbol information from /proc/kallsyms in __dso__load_kallsyms. A part of symbol in /proc/kallsyms from my virtual machine is as follows: #cat /proc/kallsyms | sort ... ffff000001475080 d rpfilter_mt_reg [ip6t_rpfilter] ffff000001475100 d $d [ip6t_rpfilter] ffff000001475100 d __this_module [ip6t_rpfilter] ffff000080080000 t _head ffff000080080000 T _text ffff000080080040 t pe_header ... Take line 'ffff000001475100 d __this_module [ip6t_rpfilter]' as example. The start and end of symbol are both set to ffff000001475100 in dso__load_all_kallsyms. Then symbols__fixup_end will set the end of symbol to next big address to ffff000001475100 in /proc/kallsyms, ffff000080080000 in this example. Then sizeof of symbol will be about 2G and cause the problem. The start of module in my machine is ffff000000a62000 t $x [dm_mod] The start of kernel in my machine is ffff000080080000 t _head There is a big gap between end of module and begin of kernel if a samll amount of memory is used by module. And the last symbol in module will have a large address range as caotaining the big gap. Give that the module and kernel text segment sequence may change in the future, fix this by limiting range of last symbol in module and kernel to 4K in arch arm64. Signed-off-by: Kemeng Shi <shikemeng@huawei.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Hewenliang <hewenliang4@huawei.com> Cc: Hu Shiyuan <hushiyuan@huawei.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Nick Desaulniers <ndesaulniers@google.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Richter <tmricht@linux.ibm.com> Link: http://lore.kernel.org/lkml/33fd24c4-0d5a-9d93-9b62-dffa97c992ca@huawei.com [ refreshed the patch on current codebase, added string.h include as strchr() is used ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-03perf build-test: Honour JOBS to override detection of number of coresArnaldo Carvalho de Melo
When one does: $ make -C tools/perf build-test The makefile in tools/perf/tests/ will, just like the main one, detect how many cores are in the system and use it with -j. Sometimes we may need to override that, for instance, when using icecream or distcc to use multiple machines in the build process, then we need to, as with the main makefile, use: $ make JOBS=N -C tools/perf build-test Fix the tests makefile to honour that. Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lore.kernel.org/lkml/20200330130301.GA31702@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-03perf script: Add --show-cgroup-events optionNamhyung Kim
The --show-cgroup-events option is to print CGROUP events in the output like others. Committer testing: [root@seventh ~]# perf record --all-cgroups --namespaces /wb/cgtest [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.039 MB perf.data (487 samples) ] [root@seventh ~]# perf script --show-cgroup-events | grep PERF_RECORD_CGROUP -B2 -A2 swapper 0 0.000000: PERF_RECORD_CGROUP cgroup: 1 / perf 12145 11200.440730: 1 cycles: ffffffffb900d58b __intel_pmu_enable_all.constprop.0+0x3b (/lib/modules/5.6.0-rc6-00008-gfe2413eefd7f/build/vmlinux) perf 12145 11200.440733: 1 cycles: ffffffffb900d58b __intel_pmu_enable_all.constprop.0+0x3b (/lib/modules/5.6.0-rc6-00008-gfe2413eefd7f/build/vmlinux) -- cgtest 12145 11200.440739: 193472 cycles: ffffffffb90f6fbc commit_creds+0x1fc (/lib/modules/5.6.0-rc6-00008-gfe2413eefd7f/build/vmlinux) cgtest 12145 11200.440790: 2691608 cycles: 7fa2cb43019b _dl_sysdep_start+0x7cb (/usr/lib64/ld-2.29.so) cgtest 12145 11200.440962: PERF_RECORD_CGROUP cgroup: 83 /sub cgtest 12147 11200.441054: 1 cycles: ffffffffb900d58b __intel_pmu_enable_all.constprop.0+0x3b (/lib/modules/5.6.0-rc6-00008-gfe2413eefd7f/build/vmlinux) cgtest 12147 11200.441057: 1 cycles: ffffffffb900d58b __intel_pmu_enable_all.constprop.0+0x3b (/lib/modules/5.6.0-rc6-00008-gfe2413eefd7f/build/vmlinux) -- cgtest 12148 11200.441103: 10227 cycles: ffffffffb9a0153d end_repeat_nmi+0x48 (/lib/modules/5.6.0-rc6-00008-gfe2413eefd7f/build/vmlinux) cgtest 12148 11200.441106: 273295 cycles: ffffffffb99ecbc7 copy_page+0x7 (/lib/modules/5.6.0-rc6-00008-gfe2413eefd7f/build/vmlinux) cgtest 12147 11200.441133: PERF_RECORD_CGROUP cgroup: 88 /sub/cgrp1 cgtest 12147 11200.441143: 2788845 cycles: ffffffffb94676c2 security_genfs_sid+0x102 (/lib/modules/5.6.0-rc6-00008-gfe2413eefd7f/build/vmlinux) cgtest 12148 11200.441162: PERF_RECORD_CGROUP cgroup: 93 /sub/cgrp2 cgtest 12148 11200.441182: 2669546 cycles: 401020 _init+0x20 (/wb/cgtest) cgtest 12149 11200.441247: 1 cycles: ffffffffb900d58b __intel_pmu_enable_all.constprop.0+0x3b (/lib/modules/5.6.0-rc6-00008-gfe2413eefd7f/build/vmlinux) [root@seventh ~]# Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20200325124536.2800725-10-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-03perf top: Add --all-cgroups optionNamhyung Kim
The --all-cgroups option is to enable cgroup profiling support. It tells kernel to record CGROUP events in the ring buffer so that 'perf top' can identify task/cgroup association later. Committer testing: Use: # perf top --all-cgroups -s cgroup_id,cgroup,pid Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20200325124536.2800725-9-namhyung@kernel.org Link: http://lore.kernel.org/lkml/20200402015249.3800462-1-namhyung@kernel.org [ Extracted the HAVE_FILE_HANDLE from the followup patch ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-03perf record: Add --all-cgroups optionNamhyung Kim
The --all-cgroups option is to enable cgroup profiling support. It tells kernel to record CGROUP events in the ring buffer so that perf report can identify task/cgroup association later. [root@seventh ~]# perf record --all-cgroups --namespaces /wb/cgtest [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.042 MB perf.data (558 samples) ] [root@seventh ~]# perf report --stdio -s cgroup_id,cgroup,pid # To display the perf.data header info, please use --header/--header-only options. # # # Total Lost Samples: 0 # # Samples: 558 of event 'cycles' # Event count (approx.): 458017341 # # Overhead cgroup id (dev/inode) Cgroup Pid:Command # ........ ..................... .......... ............... # 33.15% 4/0xeffffffb /sub 9615:looper0 32.83% 4/0xf00002f5 /sub/cgrp2 9620:looper2 32.79% 4/0xf00002f4 /sub/cgrp1 9619:looper1 0.35% 4/0xf00002f5 /sub/cgrp2 9618:cgtest 0.34% 4/0xf00002f4 /sub/cgrp1 9617:cgtest 0.32% 4/0xeffffffb / 9615:looper0 0.11% 4/0xeffffffb /sub 9617:cgtest 0.10% 4/0xeffffffb /sub 9618:cgtest # # (Tip: Sample related events with: perf record -e '{cycles,instructions}:S') # [root@seventh ~]# Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20200325124536.2800725-8-namhyung@kernel.org Link: http://lore.kernel.org/lkml/20200402015249.3800462-1-namhyung@kernel.org [ Extracted the HAVE_FILE_HANDLE from the followup patch ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-03perf record: Support synthesizing cgroup eventsNamhyung Kim
Synthesize cgroup events by iterating cgroup filesystem directories. The cgroup event only saves the portion of cgroup path after the mount point and the cgroup id (which actually is a file handle). Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20200325124536.2800725-7-namhyung@kernel.org Link: http://lore.kernel.org/lkml/20200402015249.3800462-1-namhyung@kernel.org [ Extracted the HAVE_FILE_HANDLE from the followup patch, added missing __maybe_unused ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-03perf report: Add 'cgroup' sort keyNamhyung Kim
The cgroup sort key is to show cgroup membership of each task. Currently it shows full path in the cgroupfs (not relative to the root of cgroup namespace) since it'd be more intuitive IMHO. Otherwise root cgroup in different namespaces will all show same name - "/". The cgroup sort key should come before cgroup_id otherwise sort_dimension__add() will match it to cgroup_id as it only matches with the given substring. For example it will look like following. Note that record patch adding --all-cgroups patch will come later. $ perf record -a --namespace --all-cgroups cgtest [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.208 MB perf.data (4090 samples) ] $ perf report -s cgroup_id,cgroup,pid ... # Overhead cgroup id (dev/inode) Cgroup Pid:Command # ........ ..................... .......... ............... # 93.96% 0/0x0 / 0:swapper 1.25% 3/0xeffffffb / 278:looper0 0.86% 3/0xf000015f /sub/cgrp1 280:cgtest 0.37% 3/0xf0000160 /sub/cgrp2 281:cgtest 0.34% 3/0xf0000163 /sub/cgrp3 282:cgtest 0.22% 3/0xeffffffb /sub 278:looper0 0.20% 3/0xeffffffb / 280:cgtest 0.15% 3/0xf0000163 /sub/cgrp3 285:looper3 Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20200325124536.2800725-6-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-03perf cgroup: Maintain cgroup hierarchyNamhyung Kim
Each cgroup is kept in the perf_env's cgroup_tree sorted by the cgroup id. Hist entries have cgroup id can compare it directly and later it can be used to find a group name using this tree. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20200325124536.2800725-5-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-03perf tools: Basic support for CGROUP eventNamhyung Kim
Implement basic functionality to support cgroup tracking. Each cgroup can be identified by inode number which can be read from userspace too. The actual cgroup processing will come in the later patch. Reported-by: kernel test robot <rong.a.chen@intel.com> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Adrian Hunter <adrian.hunter@intel.com> [ fix perf test failure on sampling parsing ] Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20200325124536.2800725-4-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-03perf tools: Add file-handle feature testNamhyung Kim
The file handle (FHANDLE) support is configurable so some systems might not have it. So add a config feature item to check it on build time so that we don't add the cgroup tracking feature based on that. Committer notes: Had to make the test use the same construct as its later use in synthetic-events.c, in the next patch in this series. i.e. make it be: struct { struct file_handle fh; uint64_t cgroup_id; } handle; To cope with: CC /tmp/build/perf/util/cloexec.o util/synthetic-events.c:428:22: error: field 'fh' with CC /tmp/build/perf/util/call-path.o variable sized type 'struct file_handle' not at the end of a struct or class is a GNU extension [-Werror,-Wgnu-variable-sized-type-not-at-end] struct file_handle fh; ^ 1 error generated. Deal with this at some point, i.e. investigate if the right thing is to remove that -Wgnu-variable-sized-type-not-at-end from our CFLAGS, for now do the test the same way as it is used looks more sensible. Reported-by: Arnaldo Carvalho de Melo <acme@kernel.org> Signed-off-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20200402015249.3800462-1-namhyung@kernel.org [ split from a larger patch, removed blank line at EOF ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-03perf python: Include rwsem.c in the pythong bidingArnaldo Carvalho de Melo
We'll need it for the cgroup patches, and its better to have it in a separate patch in case we need to later revert the cgroup patches. I.e. without this we have: [root@five ~]# perf test -v python 19: 'import perf' in python : --- start --- test child forked, pid 148447 Traceback (most recent call last): File "<stdin>", line 1, in <module> ImportError: /tmp/build/perf/python/perf.cpython-37m-x86_64-linux-gnu.so: undefined symbol: down_write test child finished with -1 ---- end ---- 'import perf' in python: FAILED! [root@five ~]# Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20200403123606.GC23243@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-04-03rtc: ds1307: check for failed memory allocation on wdtColin Ian King
Currently a failed memory allocation will lead to a null pointer dereference on point wdt. Fix this by checking for a failed allocation and just returning. Addresses-Coverity: ("Dereference null return") Fixes: fd90d48db037 ("rtc: ds1307: add support for watchdog timer on ds1388") Signed-off-by: Colin Ian King <colin.king@canonical.com> Link: https://lore.kernel.org/r/20200403110437.57420-1-colin.king@canonical.com Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
2020-04-03Documentation: PM: sleep: Document system-wide suspend code flowsRafael J. Wysocki
Add a document describing high-level system-wide suspend code flows in Linux. Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-04-03cpufreq: Select schedutil when using big.LITTLELinus Walleij
When we are using a system with big.LITTLE HMP configuration, we need to use EAS to schedule the system. As can be seen from kernel/sched/topology.c: "EAS can be used on a root domain if it meets all the following conditions: 1. an Energy Model (EM) is available; 2. the SD_ASYM_CPUCAPACITY flag is set in the sched_domain hierarchy. 3. no SMT is detected. 4. the EM complexity is low enough to keep scheduling overheads low; 5. schedutil is driving the frequency of all CPUs of the rd;" This means that at the very least, schedutil needs to be available as a scheduling policy for EAS to work on these systems. Make this explicit by defaulting to the schedutil governor if BIG_LITTLE is selected. Currently users of the TC2 board (like me) has to figure these dependencies out themselves and it is not helpful. Suggested-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Walleij <linus.walleij@linaro.org> Acked-by: Sudeep Holla <sudeep.holla@arm.com> Acked-by: Viresh Kumar <viresh.kumar@linaro.org> Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
2020-04-03csky: Fixup cpu speculative execution to IO areaGuo Ren
For the memory size ( > 512MB, < 1GB), the MSA setting is: - SSEG0: PHY_START , PHY_START + 512MB - SSEG1: PHY_START + 512MB, PHY_START + 1GB But the real memory is no more than 1GB, there is a gap between the end size of memory and border of 1GB. CPU could speculatively execute to that gap and if the gap of the bus couldn't respond to the CPU request, then the crash will happen. Now make the setting with: - SSEG0: PHY_START , PHY_START + 512MB (no change) - SSEG1: Disabled (We use highmem to use the memory of 512MB~1GB) We also deprecated zhole_szie[] settings, it's only used by arm style CPUs. All memory gap should use Reserved setting of dts in csky system. Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
2020-04-03csky: Add uprobes supportGuo Ren
This patch adds support for uprobes on csky architecture. Just like kprobe, it support single-step and simulate instructions. Signed-off-by: Guo Ren <guoren@linux.alibaba.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
2020-04-03csky: Add kprobes supportedGuo Ren
This patch enable kprobes, kretprobes, ftrace interface. It utilized software breakpoint and single step debug exceptions, instructions simulation on csky. We use USR_BKPT replace origin instruction, and the kprobe handler prepares an excutable memory slot for out-of-line execution with a copy of the original instruction being probed. Most of instructions could be executed by single-step, but some instructions need origin pc value to execute and we need software simulate these instructions. Signed-off-by: Guo Ren <guoren@linux.alibaba.com> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org>
2020-04-02bpf, lsm: Fix the file_mprotect LSM test.KP Singh
The test was previously using an mprotect on the heap memory allocated using malloc and was expecting the allocation to be always using sbrk(2). This is, however, not always true and in certain conditions malloc may end up using anonymous mmaps for heap alloctions. This means that the following condition that is used in the "lsm/file_mprotect" program is not sufficent to detect all mprotect calls done on heap memory: is_heap = (vma->vm_start >= vma->vm_mm->start_brk && vma->vm_end <= vma->vm_mm->brk); The test is updated to use an mprotect on memory allocated on the stack. While this would result in the splitting of the vma, this happens only after the security_file_mprotect hook. So, the condition used in the BPF program holds true. Fixes: 03e54f100d57 ("bpf: lsm: Add selftests for BPF_PROG_TYPE_LSM") Reported-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: KP Singh <kpsingh@google.com> Signed-off-by: Alexei Starovoitov <ast@kernel.org> Link: https://lore.kernel.org/bpf/20200402200751.26372-1-kpsingh@chromium.org
2020-04-02sparc32: use per-device dma_opsChristoph Hellwig
sparc32 is the last platform making dynamic decisions in get_arch_dma_ops based on the bus passed in. Instead set the iommu dma_ops at iommu probing and propagate them in of_propagate_archdata, falling back to the NULL ops for the direct mapping in the Leon or PCI case. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-02clk: sprd: fix to get a correct ibias of pllChunyan Zhang
The current driver is getting a wrong ibias index of pll clocks from number 1. This patch fix that issue, then getting ibias index from 0. Fixes: 3e37b005580b ("clk: sprd: add adjustable pll support") Signed-off-by: Chunyan Zhang <chunyan.zhang@unisoc.com> Link: https://lkml.kernel.org/r/20200330021640.14133-1-zhang.lyra@gmail.com Signed-off-by: Stephen Boyd <sboyd@kernel.org>
2020-04-02drivers/ide: convert to list_for_each_entry_safe()chenqiwu
Use list_for_each_entry_safe() instead of list_for_each_safe() to simplify the code. Signed-off-by: chenqiwu <chenqiwu@xiaomi.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-02mlxsw: spectrum_trap: fix unintention integer overflow on left shiftColin Ian King
Shifting the integer value 1 is evaluated using 32-bit arithmetic and then used in an expression that expects a 64-bit value, so there is potentially an integer overflow. Fix this by using the BIT_ULL macro to perform the shift and avoid the overflow. Addresses-Coverity: ("Unintentional integer overflow") Fixes: 13f2e64b94ea ("mlxsw: spectrum_trap: Add devlink-trap policer support") Signed-off-by: Colin Ian King <colin.king@canonical.com> Reviewed-by: Ido Schimmel <idosch@mellanox.com> Tested-by: Ido Schimmel <idosch@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-02pegasus: Remove pegasus' own workqueuePetko Manolov
Remove pegasus' own workqueue and replace it with system_long_wq. Signed-off-by: Petko Manolov <petkan@nucleusys.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-02neigh: support smaller retrans_time setttingHangbin Liu
Currently, we limited the retrans_time to be greater than HZ/2. i.e. setting retrans_time less than 500ms will not work. This makes the user unable to achieve a more accurate control for bonding arp fast failover. Update the sanity check to HZ/100, which is 10ms, to let users have more ability on the retrans_time control. v3: sync the behavior with IPv6 and update all the timer handler v2: use HZ instead of hard code number Signed-off-by: Hangbin Liu <liuhangbin@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-02net: openvswitch: use hlist_for_each_entry_rcu instead of hlist_for_each_entryTonghao Zhang
The struct sw_flow is protected by RCU, when traversing them, use hlist_for_each_entry_rcu. Signed-off-by: Tonghao Zhang <xiangxia.m.yue@gmail.com> Tested-by: Greg Rose <gvrose8192@gmail.com> Reviewed-by: Greg Rose <gvrose8192@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-02net: core: enable SO_BINDTODEVICE for non-root usersVincent Bernat
Currently, SO_BINDTODEVICE requires CAP_NET_RAW. This change allows a non-root user to bind a socket to an interface if it is not already bound. This is useful to allow an application to bind itself to a specific VRF for outgoing or incoming connections. Currently, an application wanting to manage connections through several VRF need to be privileged. Previously, IP_UNICAST_IF and IPV6_UNICAST_IF were added for Wine (76e21053b5bf3 and c4062dfc425e9) specifically for use by non-root processes. However, they are restricted to sendmsg() and not usable with TCP. Allowing SO_BINDTODEVICE would allow TCP clients to get the same privilege. As for TCP servers, outside the VRF use case, SO_BINDTODEVICE would only further restrict connections a server could accept. When an application is restricted to a VRF (with `ip vrf exec`), the socket is bound to an interface at creation and therefore, a non-privileged call to SO_BINDTODEVICE to escape the VRF fails. When an application bound a socket to SO_BINDTODEVICE and transmit it to a non-privileged process through a Unix socket, a tentative to change the bound device also fails. Before: >>> import socket >>> s=socket.socket(socket.AF_INET, socket.SOCK_STREAM) >>> s.setsockopt(socket.SOL_SOCKET, socket.SO_BINDTODEVICE, b"dummy0") Traceback (most recent call last): File "<stdin>", line 1, in <module> PermissionError: [Errno 1] Operation not permitted After: >>> import socket >>> s=socket.socket(socket.AF_INET, socket.SOCK_STREAM) >>> s.setsockopt(socket.SOL_SOCKET, socket.SO_BINDTODEVICE, b"dummy0") >>> s.setsockopt(socket.SOL_SOCKET, socket.SO_BINDTODEVICE, b"dummy0") Traceback (most recent call last): File "<stdin>", line 1, in <module> PermissionError: [Errno 1] Operation not permitted Signed-off-by: Vincent Bernat <vincent@bernat.ch> Reviewed-by: David Ahern <dsahern@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
2020-04-02Merge tag 'devicetree-for-5.7' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux Pull devicetree updates from Rob Herring: - Unit test for overlays with GPIO hogs - Improve dma-ranges parsing to handle dma-ranges with multiple entries - Update dtc to upstream version v1.6.0-2-g87a656ae5ff9 - Improve overlay error reporting - Device link support for power-domains and hwlocks bindings - Add vendor prefixes for Beacon, Topwise, ENE, Dell, SG Micro, Elida, PocketBook, Xiaomi, Linutronix, OzzMaker, Waveshare Electronics, and ITE Tech - Add deprecated Marvell vendor prefix 'mrvl' - A bunch of binding conversions to DT schema continues. Of note, the common serial and USB connector bindings are converted. - Add more Arm CPU compatibles - Drop Mark Rutland as DT maintainer :( * tag 'devicetree-for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux: (106 commits) MAINTAINERS: drop an old reference to stm32 pwm timers doc MAINTAINERS: dt: update etnaviv file reference dt-bindings: usb: dwc2: fix bindings for amlogic, meson-gxbb-usb dt-bindings: uniphier-system-bus: fix warning in the example dt-bindings: display: meson-vpu: fix indentation of reg-names' "items" dt-bindings: iio: Fix adi, ltc2983 uint64-matrix schema constraints dt-bindings: power: Fix example for power-domain dt-bindings: arm: Add some constraints for PSCI nodes of: some unittest overlays not untracked of: gpio unittest kfree() wrong object dt-bindings: phy: convert phy-rockchip-inno-usb2 bindings to yaml dt-bindings: serial: sh-sci: Convert to json-schema dt-bindings: serial: Document serialN aliases dt-bindings: thermal: tsens: Set 'additionalProperties: false' dt-bindings: thermal: tsens: Fix nvmem-cell-names schema dt-bindings: vendor-prefixes: Add Beacon vendor prefix dt-bindings: vendor-prefixes: Add Topwise of: of_private.h: Replace zero-length array with flexible-array member docs: dt: fix a broken reference to input.yaml docs: dt: fix references to ap806-system-controller.txt ...
2020-04-02Merge tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsiLinus Torvalds
Pull SCSI updates from James Bottomley: "This series has a huge amount of churn because it pulls in Mauro's doc update changing all our txt files to rst ones. Excluding that, we have the usual driver updates (qla2xxx, ufs, lpfc, zfcp, ibmvfc, pm80xx, aacraid), a treewide update for scnprintf and some other minor updates. The major core change is Hannes moving functions out of the aacraid driver and into the core" * tag 'scsi-misc' of git://git.kernel.org/pub/scm/linux/kernel/git/jejb/scsi: (223 commits) scsi: aic7xxx: aic97xx: Remove FreeBSD-specific code scsi: ufs: Do not rely on prefetched data scsi: dc395x: remove dc395x_bios_param scsi: libiscsi: Fix error count for active session scsi: hpsa: correct race condition in offload enabled scsi: message: fusion: Replace zero-length array with flexible-array member scsi: qedi: Add PCI shutdown handler support scsi: qedi: Add MFW error recovery process scsi: ufs: Enable block layer runtime PM for well-known logical units scsi: ufs-qcom: Override devfreq parameters scsi: ufshcd: Let vendor override devfreq parameters scsi: ufshcd: Update the set frequency to devfreq scsi: ufs: Resume ufs host before accessing ufs device scsi: ufs-mediatek: customize the delay for enabling host scsi: ufs: make HCE polling more compact to improve initialization latency scsi: ufs: allow custom delay prior to host enabling scsi: ufs-mediatek: use common delay function scsi: ufs: introduce common and flexible delay function scsi: ufs: use an enum for host capabilities scsi: ufs: fix uninitialized tx_lanes in ufshcd_disable_tx_lcc() ...
2020-04-02Merge tag 'mtd/for-5.7' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux Pull MTD updates from Miquel Raynal: "MTD core changes: - Fix issue where write_cached_data() fails but write() still returns success - maps: sa1100-flash: Replace zero-length array with flexible-array member - phram: Fix a double free issue in error path - Convert fallthrough comments into statements - MAINTAINERS: Add the IRC channel to the MTD related subsystems Raw NAND core changes: - Add support for manufacturer specific suspend/resume operation - Add support for manufacturer specific lock/unlock operation - Replace zero-length array with flexible-array member - Fix a typo ("manufecturer") - Ensure nand_soft_waitrdy wait period is enough Raw NAND controller driver changes: - Brcmnand: * Add support for flash-edu for dma transfers (+ bindings) - Cadence: * Reinit completion before executing a new command * Change bad block marker size * Fix the calculation of the avaialble OOB size * Get meta data size from registers - Qualcom: * Use dma_request_chan() instead dma_request_slave_channel() * Release resources on failure within qcom_nandc_alloc() - Allwinner: * Use dma_request_chan() instead dma_request_slave_channel() - Marvell: * Use dma_request_chan() instead dma_request_slave_channel() * Release DMA channel on error - Freescale: * Use dma_request_chan() instead dma_request_slave_channel() - Macronix: * Add support for Macronix NAND randomizer (+ bindings) - Ams-delta: * Rename structures and functions to gpio_nand* * Make the driver custom I/O ready * Drop useless local variable * Support custom driver initialisation * Add module device tables * Handle more GPIO pins as optional * Make read pulses optional * Don't hardcode read/write pulse widths * Push inversion handling to gpiolib * Enable OF partition info support * Drop board specific partition info * Use struct gpio_nand_platdata * Write protect device during probe - Ingenic: * Use devm_platform_ioremap_resource() * Add dependency on MIPS || COMPILE_TEST - Denali: * Deassert write protect pin - ST: * Use dma_request_chan() instead dma_request_slave_channel() Raw NAND chip driver changes: - Toshiba: * Support reading the number of bitflips for BENAND (Built-in ECC NAND) - Macronix: * Add support for deep power down mode * Add support for block protection SPI-NAND core changes: - Do not erase the block before writing a bad block marker - Explicitly use MTD_OPS_RAW to write the bad block marker to OOB - Stop using spinand->oobbuf for buffering bad block markers - Rework detect procedure for different READ_ID operation SPI-NAND driver changes: - Toshiba: * Support for new Kioxia Serial NAND * Rename function name to change suffix and prefix (8Gbit) * Add comment about Kioxia ID - Micron: * Add new Micron SPI NAND devices with multiple dies * Add M70A series Micron SPI NAND devices * identify SPI NAND device with Continuous Read mode * Add new Micron SPI NAND devices * Describe the SPI NAND device MT29F2G01ABAGD * Generalize the OOB layout structure and function names SPI NOR core changes: - Move all the manufacturer specific quirks/code out of the core, to make the core logic more readable and thus ease maintenance. - Move the SFDP logic out of the core, it provides a better separation between the SFDP parsing and core logic. - Trim what is exposed in spi-nor.h. The SPI NOR controllers drivers must not be able to use structures that are meant just for the SPI NOR core. - Use the spi-mem direct mapping API to let advanced controllers optimize the read/write operations when they support direct mapping. - Add generic formula for the Status Register block protection handling. It fixes some long standing locking limitations and eases the addition of the 4bit block protection support. - Add block protection support for flashes with 4 block protection bits in the Status Register. SPI NOR controller drivers changes: - The mtk-quadspi driver is replaced by the new spi-mem spi-mtk-nor driver. - Merge tag 'mtk-mtd-spi-move' into spi-nor/next to avoid conflicts. HyperBus changes: - Print error msg when compatible is wrong or missing - Move mapping of direct access window from core to individual drivers" * tag 'mtd/for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: (103 commits) mtd: Convert fallthrough comments into statements mtd: rawnand: toshiba: Support reading the number of bitflips for BENAND (Built-in ECC NAND) MAINTAINERS: Add the IRC channel to the MTD related subsystems mtd: Fix issue where write_cached_data() fails but write() still returns success mtd: maps: sa1100-flash: Replace zero-length array with flexible-array member mtd: phram: fix a double free issue in error path mtd: spinand: toshiba: Support for new Kioxia Serial NAND mtd: spinand: toshiba: Rename function name to change suffix and prefix (8Gbit) mtd: rawnand: macronix: Add support for deep power down mode mtd: rawnand: Add support for manufacturer specific suspend/resume operation mtd: spi-nor: Enable locking for n25q512ax3/n25q512a mtd: spi-nor: Add SR 4bit block protection support mtd: spi-nor: Add generic formula for SR block protection handling mtd: spi-nor: Set all BP bits to one when lock_len == mtd->size mtd: spi-nor: controllers: aspeed-smc: Replace zero-length array with flexible-array member mtd: spi-nor: Clear WEL bit when erase or program errors occur MAINTAINERS: update entry after SPI NOR controller move mtd: spi-nor: Trim what is exposed in spi-nor.h mtd: spi-nor: Drop the MFR definitions mtd: spi-nor: Get rid of the now empty spi_nor_ids[] table ...
2020-04-03Merge branch 'ttm-transhuge' of git://people.freedesktop.org/~thomash/linux ↵Dave Airlie
into drm-next Huge page-table entries for TTM In order to reduce CPU usage [1] and in theory TLB misses this patchset enables huge- and giant page-table entries for TTM and TTM-enabled graphics drivers. Signed-off-by: Dave Airlie <airlied@redhat.com> From: Thomas Hellstrom (VMware) <thomas_os@shipmail.org> Link: https://patchwork.freedesktop.org/patch/msgid/20200325073102.6129-1-thomas_os@shipmail.org
2020-04-02Merge tag 'dmaengine-5.7-rc1' of git://git.infradead.org/users/vkoul/slave-dmaLinus Torvalds
Pull dmaengine updates from Vinod Koul: "Core: - Some code cleanup and optimization in core by Andy - Debugfs support for displaying dmaengine channels by Peter Drivers: - New driver for uniphier-xdmac controller - Updates to stm32 dma, mdma and dmamux drivers and PM support - More updates to idxd drivers - Bunch of changes in tegra-apb driver and cleaning up of pm functions - Bunch of spelling fixes and Replace zero-length array patches - Shutdown hook for fsl-dpaa2-qdma driver - Support for interleaved transfers for ti-edma and virtualization support for k3-dma driver - Support for reset and updates in xilinx_dma driver - Improvements and locking updates in at_hdma driver" * tag 'dmaengine-5.7-rc1' of git://git.infradead.org/users/vkoul/slave-dma: (89 commits) dt-bindings: dma: renesas,usb-dmac: add r8a77961 support dmaengine: uniphier-xdmac: Remove redandant error log for platform_get_irq dmaengine: tegra-apb: Improve DMA synchronization dmaengine: tegra-apb: Don't save/restore IRQ flags in interrupt handler dmaengine: tegra-apb: mark PM functions as __maybe_unused dmaengine: fix spelling mistake "exceds" -> "exceeds" dmaengine: sprd: Set request pending flag when DMA controller is active dmaengine: ppc4xx: Use scnprintf() for avoiding potential buffer overflow dmaengine: idxd: remove global token limit check dmaengine: idxd: reflect shadow copy of traffic class programming dmaengine: idxd: Merge definition of dsa_batch_desc into dsa_hw_desc dmaengine: Create debug directories for DMA devices dmaengine: ti: k3-udma: Implement custom dbg_summary_show for debugfs dmaengine: Add basic debugfs support dmaengine: fsl-dpaa2-qdma: remove set but not used variable 'dpaa2_qdma' dmaengine: ti: edma: fix null dereference because of a typo in pointer name dmaengine: fsl-dpaa2-qdma: Adding shutdown hook dmaengine: uniphier-xdmac: Add UniPhier external DMA controller driver dt-bindings: dmaengine: Add UniPhier external DMA controller bindings dmaengine: ti: k3-udma: Implement support for atype (for virtualization) ...
2020-04-02Merge branch 'i2c/for-5.7' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux Pull i2c updates from Wolfram Sang: "I2C has: - using defines for bus speeds to avoid mistakes in hardcoded values; lots of small driver updates because of that. Thanks, Andy! - API change: i2c_setup_smbus_alert() was renamed to i2c_new_smbus_alert_device() and returns ERRPTR now. All in-tree users have been converted - in the core, a rare race condition when deleting the cdev has been fixed. Thanks, Kevin! - lots of driver updates. Thanks, everyone! I also want to mention: The amount of review and testing tags given was quite high this time. Thank you to these people, too. I hope we can keep it like this!" * 'i2c/for-5.7' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: (34 commits) i2c: rcar: clean up after refactoring i2c_timings macintosh: convert to i2c_new_scanned_device i2c: drivers: Use generic definitions for bus frequencies i2c: algo: Use generic definitions for bus frequencies i2c: stm32f7: switch to I²C generic property parsing i2c: rcar: Consolidate timings calls in rcar_i2c_clock_calculate() i2c: core: Allow override timing properties with 0 i2c: core: Provide generic definitions for bus frequencies i2c: mxs: Use dma_request_chan() instead dma_request_slave_channel() i2c: imx: remove duplicate print after platform_get_irq() i2c: designware: Fix spelling typos in the comments i2c: designware: Discard i2c_dw_read_comp_param() function i2c: designware: Detect the FIFO size in the common code i2c: dev: Fix the race between the release of i2c_dev and cdev i2c: qcom-geni: Drop of_platform.h include i2c: qcom-geni: Grow a dev pointer to simplify code i2c: qcom-geni: Let firmware specify irq trigger flags i2c: stm32f7: do not backup read-only PECR register i2c: smbus: remove outdated references to irq level triggers i2c: convert SMBus alert setup function to return an ERRPTR ...
2020-04-02NFS: Add a module parameter to set nfs_mountpoint_expiry_timeoutTrond Myklebust
Setting nfs_mountpoint_expiry_timeout() to a negative value stops mountpoint expiration, while setting it to a positive value restarts the scheduler. Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2020-04-02NFS: finish_automount() requires us to hold 2 refs to the mount recordTrond Myklebust
We must not return from nfs_d_automount() without holding 2 references to the mount record. Doing so, will trigger the BUG() in finish_automount(). Also ensure that we don't try to reschedule the automount timer with a negative or zero timeout value. Fixes: 22a1ae9a93fb ("NFS: If nfs_mountpoint_expiry_timeout < 0, do not expire submounts") Cc: stable@vger.kernel.org # v5.5+ Signed-off-by: Trond Myklebust <trond.myklebust@hammerspace.com>
2020-04-02Merge tag 'sound-5.7-rc1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound Pull sound updates from Takashi Iwai: "This became again a busy development cycle. There are few ALSA core updates (merely API cleanups and sparse fixes), with the majority of other changes are found in ASoC scene. Here are some highlights: ALSA core: - More helper macros for sparse warning fixes (e.g. bitwise types) - Slight optimization of PCM OSS locks - Make common handling for PCM / compress buffers (for SOF) ASoC: - Lots of code refactoring and modernization for (still ongoing) componentization works - Conversion of SND_SOC_ALL_CODECS to use imply - Continued refactoring and fixing of the Intel SOF/SST support, including the initial (but still incomplete) SoundWire support - SoundWire and more advanced clocking support for Realtek RT5682 - Support for amlogic GX, Meson 8, Meson 8B and T9015 DAC, Broadcom DSL/PON, Ingenic JZ4760 and JZ4770, Realtek RL6231, and TI TAS2563 and TLV320ADCX140 HD-audio: - Optimizations in HDMI jack handling - A few new quirks and fixups for Realtek codecs USB-audio: - Delayed registration support - New quirks for Motu, Kingston, Presonus" * tag 'sound-5.7-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tiwai/sound: (415 commits) ALSA: usb-audio: Fix case when USB MIDI interface has more than one extra endpoint descriptor Revert "ALSA: uapi: Drop asound.h inclusion from asoc.h" ALSA: hda/realtek - Remove now-unnecessary XPS 13 headphone noise fixups ALSA: hda/realtek - Set principled PC Beep configuration for ALC256 ALSA: doc: Document PC Beep Hidden Register on Realtek ALC256 ALSA: hda/realtek - a fake key event is triggered by running shutup ALSA: hda: default enable CA0132 DSP support ASoC: amd: acp3x-pcm-dma: clean up two indentation issues ASoC: tlv320adcx140: Remove undocumented property ASoC: Intel: sof_sdw: Add Volteer support with RT5682 SNDW helper function ASoC: Intel: common: add match table for TGL RT5682 SoundWire driver ASoC: Intel: boards: add sof_sdw machine driver ASoC: Intel: soc-acpi: update topology and driver name for SoundWire platforms ASoC: rt5682: move DAI clock registry to I2S mode ASoC: pxa: magician: convert to use i2c_new_client_device() ASoC: SOF: Intel: hda-ctrl: add reset cycle before parsing capabilities Asoc: SOF: Intel: hda: check SoundWire wakeen interrupt in irq thread ASoC: SOF: Intel: hda: add WAKEEN interrupt support for SoundWire ASoC: SOF: Intel: hda: add parameter to control SoundWire clock stop quirks ASoC: SOF: Intel: hda: merge IPC, stream and SoundWire interrupt handlers ...
2020-04-02Merge tag 'pinctrl-v5.7-1' of ↵Linus Torvalds
git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl Pull pin control updates from Linus Walleij: "This is the bulk of pin control changes for the v5.7 kernel cycle. There are no core changes this time, only driver developments: - New driver for the Dialog Semiconductor DA9062 Power Management Integrated Circuit (PMIC). - Renesas SH-PFC has improved consistency, with group and register checks in the configuration checker. - New subdriver for the Qualcomm IPQ6018. - Add the RGMII pin control functionality to Qualcomm IPQ8064. - Performance and code quality cleanups in the Mediatek driver. - Improve the Broadcom BCM2835 support to cover all the GPIOs that exist in it. - The Allwinner/Sunxi driver properly masks non-wakeup IRQs on suspend. - Add some missing groups and functions to the Ingenic driver. - Convert some of the Freescale device tree bindings to use the new and all improved JSON YAML markup. - Refactorings and support for the SFIO/GPIO in the Tegra194 SoC driver. - Support high impedance mode in the Spreadtrum/Unisoc driver" * tag 'pinctrl-v5.7-1' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl: (64 commits) pinctrl: qcom: fix compilation error pinctrl: qcom: use scm_call to route GPIO irq to Apps pinctrl: sprd: Add pin high impedance mode support pinctrl: sprd: Use the correct pin output configuration pinctrl: tegra: Add SFIO/GPIO programming on Tegra194 pinctrl: tegra: Renumber the GG.0 and GG.1 pins pinctrl: tegra: Do not add default pin range on Tegra194 pinctrl: tegra: Pass struct tegra_pmx for pin range check pinctrl: tegra: Fix "Scmitt" -> "Schmitt" typo pinctrl: tegra: Fix whitespace issues for improved readability pinctrl: mediatek: Use scnprintf() for avoiding potential buffer overflow pinctrl: freescale: drop the dependency on ARM64 for i.MX8M Revert "pinctrl: mvebu: armada-37xx: use use platform api" dt-bindings: pinctrl: at91: Fix a typo ("descibe") pinctrl: meson: add tsin pinctrl for meson gxbb/gxl/gxm pinctrl: sprd: Fix the kconfig warning pinctrl: ingenic: add hdmi-ddc pin control group pinctrl: sirf/atlas7: Replace zero-length array with flexible-array member pinctrl: sprd: Allow the SPRD pinctrl driver building into a module pinctrl: Export some needed symbols at module load time ...
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