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2020-10-15perf c2c: Update documentation for metrics reorganizationLeo Yan1-16/+18
The output format for metrics has been reorganized, update documentation to reflect the changes for it. Signed-off-by: Leo Yan <leo.yan@linaro.org> Cc: Al Grant <al.grant@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Don Zickus <dzickus@redhat.com> Cc: Ian Rogers <irogers@google.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Joe Mario <jmario@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> Link: http://lore.kernel.org/lkml/20201015144548.18482-10-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-10-14perf diff: Support hot streams comparisonJin Yao1-0/+4
This patch enables perf-diff with "--stream" option. "--stream": Enable hot streams comparison Now let's see example. perf record -b ... Generate perf.data.old with branch data perf record -b ... Generate perf.data with branch data perf diff --stream [ Matched hot streams ] hot chain pair 1: cycles: 1, hits: 27.77% cycles: 1, hits: 9.24% --------------------------- -------------------------- main div.c:39 main div.c:39 main div.c:44 main div.c:44 hot chain pair 2: cycles: 34, hits: 20.06% cycles: 27, hits: 16.98% --------------------------- -------------------------- __random_r random_r.c:360 __random_r random_r.c:360 __random_r random_r.c:388 __random_r random_r.c:388 __random_r random_r.c:388 __random_r random_r.c:388 __random_r random_r.c:380 __random_r random_r.c:380 __random_r random_r.c:357 __random_r random_r.c:357 __random random.c:293 __random random.c:293 __random random.c:293 __random random.c:293 __random random.c:291 __random random.c:291 __random random.c:291 __random random.c:291 __random random.c:291 __random random.c:291 __random random.c:288 __random random.c:288 rand rand.c:27 rand rand.c:27 rand rand.c:26 rand rand.c:26 rand@plt rand@plt rand@plt rand@plt compute_flag div.c:25 compute_flag div.c:25 compute_flag div.c:22 compute_flag div.c:22 main div.c:40 main div.c:40 main div.c:40 main div.c:40 main div.c:39 main div.c:39 hot chain pair 3: cycles: 9, hits: 4.48% cycles: 6, hits: 4.51% --------------------------- -------------------------- __random_r random_r.c:360 __random_r random_r.c:360 __random_r random_r.c:388 __random_r random_r.c:388 __random_r random_r.c:388 __random_r random_r.c:388 __random_r random_r.c:380 __random_r random_r.c:380 [ Hot streams in old perf data only ] hot chain 1: cycles: 18, hits: 6.75% -------------------------- __random_r random_r.c:360 __random_r random_r.c:388 __random_r random_r.c:388 __random_r random_r.c:380 __random_r random_r.c:357 __random random.c:293 __random random.c:293 __random random.c:291 __random random.c:291 __random random.c:291 __random random.c:288 rand rand.c:27 rand rand.c:26 rand@plt rand@plt compute_flag div.c:25 compute_flag div.c:22 main div.c:40 hot chain 2: cycles: 29, hits: 2.78% -------------------------- compute_flag div.c:22 main div.c:40 main div.c:40 main div.c:39 [ Hot streams in new perf data only ] hot chain 1: cycles: 4, hits: 4.54% -------------------------- main div.c:42 compute_flag div.c:28 hot chain 2: cycles: 5, hits: 3.51% -------------------------- main div.c:39 main div.c:44 main div.c:42 compute_flag div.c:28 Signed-off-by: Jin Yao <yao.jin@linux.intel.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Link: https://lore.kernel.org/r/20201009022845.13141-8-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-10-14perf intel-pt: Improve PT documentation slightlyAndi Kleen1-0/+30
Document the higher level --insn-trace etc. perf script options. Include the howto how to build xed into the manpage Signed-off-by: Andi Kleen <ak@linux.intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Link: http://lore.kernel.org/lkml/20201014035346.4772-1-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-10-14perf tools: Add support for exclusive groups/eventsAndi Kleen1-0/+1
Peter suggested that using the exclusive mode in perf could avoid some problems with bad scheduling of groups. Exclusive is implemented in the kernel, but wasn't exposed by the perf tool, so hard to use without custom low level API users. Add support for marking groups or events with :e for exclusive in the perf tool. The implementation is basically the same as the existing pinned attribute. Committer testing: # perf test "parse event" 6: Parse event definition strings : Ok # perf test -v "parse event" |& grep :u*e running test 56 'instructions:uep' running test 57 '{cycles,cache-misses,branch-misses}:e' # # # grep "model name" -m1 /proc/cpuinfo model name : AMD Ryzen 9 3900X 12-Core Processor # # perf stat -a -e '{cycles,cache-misses,branch-misses}:e' sleep 1 Performance counter stats for 'system wide': <not counted> cycles (0.00%) <not counted> cache-misses (0.00%) <not counted> branch-misses (0.00%) 1.001269893 seconds time elapsed Some events weren't counted. Try disabling the NMI watchdog: echo 0 > /proc/sys/kernel/nmi_watchdog perf stat ... echo 1 > /proc/sys/kernel/nmi_watchdog # echo 0 > /proc/sys/kernel/nmi_watchdog # perf stat -a -e '{cycles,cache-misses,branch-misses}:e' sleep 1 Performance counter stats for 'system wide': 1,298,663,141 cycles 30,962,215 cache-misses 5,325,150 branch-misses 1.001474934 seconds time elapsed # # The output for asking for precise events on AMD needs to improve, it # supposedly works only for system wide or per CPU # # perf stat -a -e '{cycles,cache-misses,branch-misses}:uep' sleep 1 Error: The sys_perf_event_open() syscall returned with 22 (Invalid argument) for event (cycles). /bin/dmesg | grep -i perf may provide additional information. # perf stat -a -e '{cycles,cache-misses,branch-misses}:ue' sleep 1 Performance counter stats for 'system wide': 746,363,126 cycles 16,881,611 cache-misses 2,871,259 branch-misses 1.001636066 seconds time elapsed # 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> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20201014144255.22699-1-andi@firstfloor.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-10-13perf inject: Add --buildid-all optionNamhyung Kim1-1/+5
Like 'perf record', we can even more speedup build-id processing by just using all DSOs. Then we don't need to look at all the sample events anymore. The following patch will update 'perf bench' to show the result of the --buildid-all option too. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Original-patch-by: Stephane Eranian <eranian@google.com> Acked-by: Ian Rogers <irogers@google.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Link: https://lore.kernel.org/r/20201012070214.2074921-6-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-09-28perf stat: Add --for-each-cgroup optionNamhyung Kim1-0/+5
The --for-each-cgroup option is a syntax sugar to monitor large number of cgroups easily. Current command line requires to list all the events and cgroups even if users want to monitor same events for each cgroup. This patch addresses that usage by copying given events for each cgroup on user's behalf. For instance, if they want to monitor 6 events for 200 cgroups each they should write 1200 event names (with -e) AND 1200 cgroup names (with -G) on the command line. But with this change, they can just specify 6 events and 200 cgroups with a new option. A simpler example below: It wants to measure 3 events for 2 cgroups ('A' and 'B'). The result is that total 6 events are counted like below. $ perf stat -a -e cpu-clock,cycles,instructions --for-each-cgroup A,B sleep 1 Performance counter stats for 'system wide': 988.18 msec cpu-clock A # 0.987 CPUs utilized 3,153,761,702 cycles A # 3.200 GHz (100.00%) 8,067,769,847 instructions A # 2.57 insn per cycle (100.00%) 982.71 msec cpu-clock B # 0.982 CPUs utilized 3,136,093,298 cycles B # 3.182 GHz (99.99%) 8,109,619,327 instructions B # 2.58 insn per cycle (99.99%) 1.001228054 seconds time elapsed Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20200924124455.336326-3-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-09-17perf docs: Improve help information in perf.txtZejiang Tang1-22/+47
perf has many undocumented options, such as:-vv, --exec-path, --html-path, -p, --paginate,--no-pager, --debugfs-dir, --buildid-dir, --list-cmds, --list-opts. Add entris for these options in perf.txt. Signed-off-by: Zejiang Tang <tangzejiang@loongson.cn> Acked-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> Cc: Ravi Bangoria <ravi.bangoria@linux.ibm.com> Link: http://lore.kernel.org/lkml/1599645194-8438-1-git-send-email-tangzejiang@loongson.cn Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-09-17perf tools: Add documentation for topdown metricsAndi Kleen1-0/+256
Add some documentation how to use the topdown metrics in ring 3. Signed-off-by: Andi Kleen <ak@linux.intel.com> Co-developed-by: Kan Liang <kan.liang@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20200911144808.27603-5-kan.liang@linux.intel.com Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-09-17perf stat: Support new per thread TopDown metricsAndi Kleen1-2/+5
Icelake has support for reporting per thread TopDown metrics. These are reported differently than the previous TopDown support, each metric is standalone, but scaled to pipeline "slots". We don't need to do anything special for HyperThreading anymore. Teach perf stat --topdown to handle these new metrics and print them in the same way as the previous TopDown metrics. The restrictions of only being able to report information per core is gone. Signed-off-by: Andi Kleen <ak@linux.intel.com> Co-developed-by: Kan Liang <kan.liang@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lore.kernel.org/lkml/20200911144808.27603-4-kan.liang@linux.intel.com Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-09-04perf: ftrace: Add filter support for option -F/--funcsChangbin Du1-1/+2
Same as 'perf probe -F', this patch adds filter support for the ftrace subcommand option '-F, --funcs <[FILTER]>'. Here is an example that only lists functions which start with 'vfs_': $ sudo perf ftrace -F vfs_* vfs_fadvise vfs_fallocate vfs_truncate vfs_open vfs_setpos vfs_llseek vfs_readf vfs_writef ... Suggested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Signed-off-by: Changbin Du <changbin.du@gmail.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20200904152357.6053-1-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-09-04perf intel-pt: Document snapshot control commandAdrian Hunter1-3/+20
The documentation describes snapshot mode. Update it to include the new snapshot control command. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lore.kernel.org/lkml/20200901093758.32293-7-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-09-04perf annotate: Allow configuring the 'disassembler_style' knob via 'perf config'Arnaldo Carvalho de Melo1-0/+5
# perf annotate --stdio2 acpi_processor_ffh_cstate_enter > default # perf config annotate.disassembler_style=intel # perf config annotate.disassembler_style annotate.disassembler_style=intel # perf annotate --stdio2 acpi_processor_ffh_cstate_enter > intel # diff -u default intel --- default 2020-09-04 13:09:26.019205732 -0300 +++ intel 2020-09-04 13:09:52.823795081 -0300 @@ -1,42 +1,42 @@ Samples: 1K of event 'cycles', 4000 Hz, Event count (approx.): 990065316, [percent: local period] acpi_processor_ffh_cstate_enter() /lib/modules/5.9.0-rc3/build/vmlinux -Percent → callq __fentry__ - mov cpu_number,%edx - mov %edx,%edx - mov cpu_cstate_entry,%rax - add -0x7dbe9700(,%rdx,8),%rax - movzbl 0x9(%rdi),%edx - mov 0x4(%rax,%rdx,8),%edi - mov (%rax,%rdx,8),%esi - → jmpq 137ccc6 - 2d: → jmpq 137ccd8 +Percent → call __fentry__ + mov edx,DWORD PTR gs:[rip+0x7e541d74] + mov edx,edx + mov rax,QWORD PTR [rip+0x152b8fb] + add rax,QWORD PTR [rdx*8-0x7dbe9700] + movzx edx,BYTE PTR [rdi+0x9] + mov edi,DWORD PTR [rax+rdx*8+0x4] + mov esi,DWORD PTR [rax+rdx*8] + → jmp 137ccc6 + 2d: → jmp 137ccd8 mfence - mov %gs:0x17bc0,%rax - clflush (%rax) + mov rax,QWORD PTR gs:0x17bc0 + clflush BYTE PTR [rax] mfence - xor %edx,%edx - mov %rdx,%rcx - mov %gs:0x17bc0,%rax - 0.00 monitor %rax,%ecx,%edx - mov (%rax),%rax - test $0x8,%al + xor edx,edx + mov rcx,rdx + mov rax,QWORD PTR gs:0x17bc0 + 0.00 monitor + mov rax,QWORD PTR [rax] + test al,0x8 ↓ jne 71 - ↓ jmpq 68 - verw 0x538b08(%rip) # ffffffff82008150 <ds.0> - 68: mov %rsi,%rax - mov %rdi,%rcx -100.00 mwait %eax,%ecx - 71: mov %gs:0x17bc0,%rax - lock andb $0xdf,0x2(%rax) - lock addl $0x0,-0x4(%rsp) - mov (%rax),%rax - test $0x8,%al + ↓ jmp 68 + verw WORD PTR [rip+0x538b08] # ffffffff82008150 <ds.0> + 68: mov rax,rsi + mov rcx,rdi +100.00 mwait + 71: mov rax,QWORD PTR gs:0x17bc0 + lock and BYTE PTR [rax+0x2],0xdf + lock add DWORD PTR [rsp-0x4],0x0 + mov rax,QWORD PTR [rax] + test al,0x8 ↓ je 97 - andl $0x7fffffff,__preempt_count - 97: ← retq - mov %gs:0x17bc0,%rax - lock orb $0x20,0x2(%rax) - mov (%rax),%rax - test $0x8,%al + and DWORD PTR gs:[rip+0x7e548509],0x7fffffff + 97: ret + mov rax,QWORD PTR gs:0x17bc0 + lock or BYTE PTR [rax+0x2],0x20 + mov rax,QWORD PTR [rax] + test al,0x8 ↑ jne 71 - ↑ jmpq 2d + ↑ jmp 2d # Requested-by: Matt P. Dziubinski <matdzb@gmail.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-09-04perf record: Add 'snapshot' control commandAdrian Hunter1-4/+4
Add 'snapshot' control command to create an AUX area tracing snapshot the same as if sending SIGUSR2. The advantage of the FIFO is that access is governed by access to the FIFO. Example: $ mkfifo perf.control $ mkfifo perf.ack $ cat perf.ack & [1] 15235 $ sudo ~/bin/perf record --control fifo:perf.control,perf.ack -S -e intel_pt//u -- sleep 60 & [2] 15243 $ ps -e | grep perf 15244 pts/1 00:00:00 perf $ kill -USR2 15244 bash: kill: (15244) - Operation not permitted $ echo snapshot > perf.control ack $ Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lore.kernel.org/lkml/20200901093758.32293-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-09-04perf tools: Add FIFO file names as alternative options to --controlAdrian Hunter2-0/+4
Enable the --control option to accept file names as an alternative to file descriptors. Example: $ mkfifo perf.control $ mkfifo perf.ack $ cat perf.ack & [1] 6808 $ perf record --control fifo:perf.control,perf.ack -- sleep 300 & [2] 6810 $ echo disable > perf.control $ Events disabled ack $ echo enable > perf.control $ Events enabled ack $ echo disable > perf.control $ Events disabled ack $ kill %2 [ perf record: Woken up 4 times to write data ] $ [ perf record: Captured and wrote 0.018 MB perf.data (7 samples) ] [1]- Done cat perf.ack [2]+ Terminated perf record --control fifo:perf.control,perf.ack -- sleep 300 $ Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lore.kernel.org/lkml/20200902105707.11491-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-09-04perf tools: Use AsciiDoc formatting for --control option documentationAdrian Hunter2-46/+46
The --control option does not display well in man pages unless AsciiDoc formatting is used. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lore.kernel.org/lkml/20200901093758.32293-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-09-03perf record/stat: Explicitly call out event modifiers in the documentationKim Phillips2-0/+8
Event modifiers are not mentioned in the perf record or perf stat manpages. Add them to orient new users more effectively by pointing them to the perf list manpage for details. Fixes: 2055fdaf8703 ("perf list: Document precise event sampling for AMD IBS") Signed-off-by: Kim Phillips <kim.phillips@amd.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Paul Clarke <pc@us.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Tony Jones <tonyj@suse.de> Cc: stable@vger.kernel.org Link: http://lore.kernel.org/lkml/20200901215853.276234-1-kim.phillips@amd.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-09-03perf stat: Turn off summary for interval mode by defaultJin Yao1-0/+3
There's a risk that outputting interval mode summaries by default breaks CSV consumers. It already broke pmu-tools/toplev. So now we turn off the summary by default but we create a new option '--summary' to enable the summary. This is active even when not using CSV mode. Before: root@kbl-ppc:~# perf stat -I1000 --interval-count 2 # time counts unit events 1.000265904 8,005.73 msec cpu-clock # 8.006 CPUs utilized 1.000265904 601 context-switches # 0.075 K/sec 1.000265904 10 cpu-migrations # 0.001 K/sec 1.000265904 0 page-faults # 0.000 K/sec 1.000265904 66,746,521 cycles # 0.008 GHz 1.000265904 71,874,398 instructions # 1.08 insn per cycle 1.000265904 13,356,781 branches # 1.668 M/sec 1.000265904 298,756 branch-misses # 2.24% of all branches 2.001857667 8,012.52 msec cpu-clock # 8.013 CPUs utilized 2.001857667 164 context-switches # 0.020 K/sec 2.001857667 10 cpu-migrations # 0.001 K/sec 2.001857667 2 page-faults # 0.000 K/sec 2.001857667 5,822,188 cycles # 0.001 GHz 2.001857667 2,186,170 instructions # 0.38 insn per cycle 2.001857667 442,378 branches # 0.055 M/sec 2.001857667 44,750 branch-misses # 10.12% of all branches Performance counter stats for 'system wide': 16,018.25 msec cpu-clock # 7.993 CPUs utilized 765 context-switches # 0.048 K/sec 20 cpu-migrations # 0.001 K/sec 2 page-faults # 0.000 K/sec 72,568,709 cycles # 0.005 GHz 74,060,568 instructions # 1.02 insn per cycle 13,799,159 branches # 0.861 M/sec 343,506 branch-misses # 2.49% of all branches 2.004118489 seconds time elapsed After: root@kbl-ppc:~# perf stat -I1000 --interval-count 2 # time counts unit events 1.001336393 8,013.28 msec cpu-clock # 8.013 CPUs utilized 1.001336393 82 context-switches # 0.010 K/sec 1.001336393 8 cpu-migrations # 0.001 K/sec 1.001336393 0 page-faults # 0.000 K/sec 1.001336393 4,199,121 cycles # 0.001 GHz 1.001336393 1,373,991 instructions # 0.33 insn per cycle 1.001336393 270,681 branches # 0.034 M/sec 1.001336393 31,659 branch-misses # 11.70% of all branches 2.003905006 8,020.52 msec cpu-clock # 8.021 CPUs utilized 2.003905006 184 context-switches # 0.023 K/sec 2.003905006 8 cpu-migrations # 0.001 K/sec 2.003905006 2 page-faults # 0.000 K/sec 2.003905006 5,446,190 cycles # 0.001 GHz 2.003905006 2,312,547 instructions # 0.42 insn per cycle 2.003905006 451,691 branches # 0.056 M/sec 2.003905006 37,925 branch-misses # 8.40% of all branches root@kbl-ppc:~# perf stat -I1000 --interval-count 2 --summary # time counts unit events 1.001313128 8,013.20 msec cpu-clock # 8.013 CPUs utilized 1.001313128 83 context-switches # 0.010 K/sec 1.001313128 8 cpu-migrations # 0.001 K/sec 1.001313128 0 page-faults # 0.000 K/sec 1.001313128 4,470,950 cycles # 0.001 GHz 1.001313128 1,440,045 instructions # 0.32 insn per cycle 1.001313128 283,222 branches # 0.035 M/sec 1.001313128 33,576 branch-misses # 11.86% of all branches 2.003857385 8,020.34 msec cpu-clock # 8.020 CPUs utilized 2.003857385 154 context-switches # 0.019 K/sec 2.003857385 8 cpu-migrations # 0.001 K/sec 2.003857385 2 page-faults # 0.000 K/sec 2.003857385 4,515,676 cycles # 0.001 GHz 2.003857385 2,180,449 instructions # 0.48 insn per cycle 2.003857385 435,254 branches # 0.054 M/sec 2.003857385 31,179 branch-misses # 7.16% of all branches Performance counter stats for 'system wide': 16,033.53 msec cpu-clock # 7.992 CPUs utilized 237 context-switches # 0.015 K/sec 16 cpu-migrations # 0.001 K/sec 2 page-faults # 0.000 K/sec 8,986,626 cycles # 0.001 GHz 3,620,494 instructions # 0.40 insn per cycle 718,476 branches # 0.045 M/sec 64,755 branch-misses # 9.01% of all branches 2.006124542 seconds time elapsed Fixes: c7e5b328a8d4 ("perf stat: Report summary for interval mode") Signed-off-by: Jin Yao <yao.jin@linux.intel.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: 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/20200903010113.32232-1-yao.jin@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-14perf ftrace: Add option --tid to filter by thread idChangbin Du1-0/+3
This allows us to trace single thread instead of the whole process. Signed-off-by: Changbin Du <changbin.du@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-17-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-14perf ftrace: Add option -D/--delay to delay tracingChangbin Du1-0/+4
This adds an option '-D/--delay' to allow us to start tracing some times later after workload is launched. Signed-off-by: Changbin Du <changbin.du@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-16-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-14perf: ftrace: Allow set graph depth by '--graph-opts'Changbin Du1-4/+1
This is to have a consistent view of all graph tracer options. The original option '--graph-depth' is marked as deprecated. Signed-off-by: Changbin Du <changbin.du@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-15-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-14perf ftrace: Add support for trace option tracing_threshChangbin Du1-0/+1
This adds an option '--graph-opts thresh' to setup trace duration threshold for funcgraph tracer. $ sudo ./perf ftrace -G '*' --graph-opts thresh=100 3) ! 184.060 us | } /* schedule */ 3) ! 185.600 us | } /* exit_to_usermode_loop */ 2) ! 225.989 us | } /* schedule_idle */ 2) # 4140.051 us | } /* do_idle */ Signed-off-by: Changbin Du <changbin.du@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-14-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-14perf ftrace: Add option 'verbose' to show more info for graph tracerChangbin Du1-0/+1
Sometimes we want ftrace display more and longer information about the trace. $ sudo perf ftrace -G '*' 2) 0.979 us | mutex_unlock(); 2) 1.540 us | __fsnotify_parent(); 2) 0.433 us | fsnotify(); $ sudo perf ftrace -G '*' --graph-opts verbose 14160.770883 | 0) <...>-47814 | .... | 1.289 us | mutex_unlock(); 14160.770886 | 0) <...>-47814 | .... | 1.624 us | __fsnotify_parent(); 14160.770887 | 0) <...>-47814 | .... | 0.636 us | fsnotify(); 14160.770888 | 0) <...>-47814 | .... | 0.328 us | __sb_end_write(); 14160.770888 | 0) <...>-47814 | d... | 0.430 us | fpregs_assert_state_consistent(); 14160.770889 | 0) <...>-47814 | d... | | do_syscall_64() { 14160.770889 | 0) <...>-47814 | .... | | __x64_sys_close() { Signed-off-by: Changbin Du <changbin.du@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-13-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-14perf ftrace: Add support for tracing option 'irq-info'Changbin Du1-0/+1
This adds support to display irq context info for function tracer. To do this, just specify a '--func-opts irq-info' option. Signed-off-by: Changbin Du <changbin.du@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-12-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-14perf ftrace: Add support for trace option funcgraph-irqsChangbin Du1-0/+1
This adds an option '--graph-opts noirqs' to filter out functions executed in irq context. Signed-off-by: Changbin Du <changbin.du@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-11-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-14perf ftrace: Add support for trace option sleep-timeChangbin Du1-0/+4
This adds an option '--graph-opts nosleep-time' which allow us only to measure on-CPU time. This option is function_graph tracer only. Signed-off-by: Changbin Du <changbin.du@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-10-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-14perf ftrace: Add support for tracing option 'func_stack_trace'Changbin Du1-0/+4
This adds support to display call trace for function tracer. To do this, just specify a '--func-opts call-graph' option. Example: $ sudo perf ftrace -T vfs_read --func-opts call-graph iio-sensor-prox-855 [003] 6168.369657: vfs_read <-ksys_read iio-sensor-prox-855 [003] 6168.369677: <stack trace> => vfs_read => ksys_read => __x64_sys_read => do_syscall_64 => entry_SYSCALL_64_after_hwframe ... Signed-off-by: Changbin Du <changbin.du@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-9-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-14perf ftrace: Add option '--inherit' to trace children processesChangbin Du1-0/+3
This adds an option '--inherit' to allow us trace children processes spawned by our target. Signed-off-by: Changbin Du <changbin.du@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-7-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-14perf ftrace: Add option '-m/--buffer-size' to set per-cpu buffer sizeChangbin Du1-0/+5
This adds an option '-m/--buffer-size' to allow us set the size of per-cpu tracing buffer. Committer testing: Before running with this option: # find /sys/kernel/tracing/ -name buffer_size_kb | xargs cat 1408 1408 1408 1408 1408 1408 1408 1408 1408 # Then, run: # perf ftrace -m 2048K | head -10 2) | mutex_unlock() { 2) ==========> | 2) | smp_irq_work_interrupt() { 2) | irq_enter() { 2) 0.121 us | rcu_irq_enter(); 2) 0.128 us | irqtime_account_irq(); 2) 0.719 us | } 2) | __wake_up() { 2) | __wake_up_common_lock() { 2) 0.105 us | _raw_spin_lock_irqsave(); # Now look at those tracefs knobs: # find /sys/kernel/tracing/ -name buffer_size_kb | xargs cat 2048 2048 2048 2048 2048 2048 2048 2048 2048 # This should be similar to the -m option in the other perf tools, such as 'perf record', 'perf trace', etc. Signed-off-by: Changbin Du <changbin.du@gmail.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-5-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-14perf ftrace: Add option '-F/--funcs' to list available functionsChangbin Du1-0/+4
This adds an option '-F/--funcs' to list all available functions to trace, which is read from tracing file 'available_filter_functions'. $ sudo ./perf ftrace -F | head trace_initcall_finish_cb initcall_blacklisted do_one_initcall do_one_initcall trace_initcall_start_cb run_init_process try_to_run_init_process match_dev_by_label match_dev_by_uuid rootfs_init_fs_context $ Committer notes: This is the same command line option and for the same purpose as in 'perf probe'. Signed-off-by: Changbin Du <changbin.du@gmail.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-3-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-14perf ftrace: Select function/function_graph tracer automaticallyChangbin Du2-21/+25
The '-g/-G' options have already implied function_graph tracer should be used instead of function tracer. So we don't need extra option '--tracer' in this case. This patch changes the behavior as below: - If '-g' or '-G' option is on, then function_graph tracer is used. - If '-T' or '-N' option is on, then function tracer is used. - The function_graph has priority over function tracer. - The option '--tracer' only take effect if neither -g/-G nor -T/-N is specified. Here are some examples. This will start tracing all functions using default tracer: $ sudo perf ftrace This will trace all functions using function graph tracer: $ sudo perf ftrace -G '*' This will trace function vfs_read using function graph tracer: $ sudo perf ftrace -G vfs_read This will trace function vfs_read using function tracer: $ sudo perf ftrace -T vfs_read Committer notes: Using '-h -G' will tell what that option is about, so to further clarify the above examples: # perf ftrace -h -G -G, --graph-funcs <func> Set graph filter on given functions # perf ftrace -h -g -g, --nograph-funcs <func> Set nograph filter on given functions # perf ftrace -h -T -T, --trace-funcs <func> trace given functions only # perf ftrace -h -N -N, --notrace-funcs <func> do not trace given functions # Signed-off-by: Changbin Du <changbin.du@gmail.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Link: http://lore.kernel.org/lkml/20200808023141.14227-2-changbin.du@gmail.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-06perf data: Add support to store time of day in CTF data conversionJiri Olsa1-0/+3
Adad support to convert and store time of day in CTF data conversion for 'perf data convert' subcommand. The perf.data used for conversion needs to have clock data information - must be recorded with -k/--clockid option). New --tod option is added to 'perf data convert' subcommand to convert data with timestamps converted to wall clock time. Record data with clockid set: # perf record -k CLOCK_MONOTONIC kill kill: not enough arguments [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.033 MB perf.data (8 samples) ] Convert data with TOD timestamps: # perf data convert --tod --to-ctf ./ctf [ perf data convert: Converted 'perf.data' into CTF data './ctf' ] [ perf data convert: Converted and wrote 0.000 MB (8 samples) ] Display data in perf script: # perf script -F+tod --ns perf 262150 2020-07-13 18:38:50.097678523 153633.958246159: 1 cycles: ... perf 262150 2020-07-13 18:38:50.097682941 153633.958250577: 1 cycles: ... perf 262150 2020-07-13 18:38:50.097684997 153633.958252633: 7 cycles: ... ... Display data in babeltrace: # babeltrace --clock-date ./ctf [2020-07-13 18:38:50.097678523] (+?.?????????) cycles: { cpu_id = 0 }, { perf_ip = 0xFFF ... [2020-07-13 18:38:50.097682941] (+0.000004418) cycles: { cpu_id = 0 }, { perf_ip = 0xFFF ... [2020-07-13 18:38:50.097684997] (+0.000002056) cycles: { cpu_id = 0 }, { perf_ip = 0xFFF ... ... It's available only for recording with clockid specified, because it's the only case where we can get reference time to wallclock time. It's can't do that with perf clock yet. Error is display if you want to use --tod on data without clockid specified: # perf data convert --tod --to-ctf ./ctf Can't provide --tod time, missing clock data. Please record with -k/--clockid option. Failed to setup CTF writer. Error during conversion setup. Signed-off-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: David Ahern <dsahern@gmail.com> Cc: Geneviève Bastien <gbastien@versatic.net> Cc: Ian Rogers <irogers@google.com> Cc: Jeremie Galarneau <jgalar@efficios.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lore.kernel.org/lkml/20200805093444.314999-6-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-06perf header: Store clock references for -k/--clockid optionJiri Olsa1-0/+13
Add a new CLOCK_DATA feature that stores reference times when -k/--clockid option is specified. It contains the clock id and its reference time together with wall clock time taken at the 'same time', both values are in nanoseconds. The format of data is as below: struct { u32 version; /* version = 1 */ u32 clockid; u64 wall_clock_ns; u64 clockid_time_ns; }; This clock reference times will be used in following changes to display wall clock for perf events. It's available only for recording with clockid specified, because it's the only case where we can get reference time to wallclock time. It's can't do that with perf clock yet. Committer testing: $ perf record -h -k Usage: perf record [<options>] [<command>] or: perf record [<options>] -- <command> [<options>] -k, --clockid <clockid> clockid to use for events, see clock_gettime() $ perf record -k monotonic sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.017 MB perf.data (8 samples) ] $ perf report --header-only | grep clockid -A1 # event : name = cycles:u, , id = { 88815, 88816, 88817, 88818, 88819, 88820, 88821, 88822 }, size = 120, { sample_period, sample_freq } = 4000, sample_type = IP|TID|TIME|PERIOD, read_format = ID, 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, use_clockid = 1, ksymbol = 1, bpf_event = 1, clockid = 1 # CPU_TOPOLOGY info available, use -I to display -- # clockid frequency: 1000 MHz # cpu pmu capabilities: branches=32, max_precise=3, pmu_name=skylake # clockid: monotonic (1) # reference time: 2020-08-06 09:40:21.619290 = 1596717621.619290 (TOD) = 21931.077673635 (monotonic) $ Original-patch-by: David Ahern <dsahern@gmail.com> Signed-off-by: Jiri Olsa <jolsa@kernel.org> 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: David Ahern <dsahern@gmail.com> Cc: Geneviève Bastien <gbastien@versatic.net> Cc: Ian Rogers <irogers@google.com> Cc: Jeremie Galarneau <jgalar@efficios.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Wang Nan <wangnan0@huawei.com> Link: http://lore.kernel.org/lkml/20200805093444.314999-4-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-06perf intel-pt: Add support for decoding PSB+ onlyAdrian Hunter1-0/+15
A single q option decodes ip from only FUP/TIP packets. Make it so that repeating the q option (i.e. qq) decodes only PSB+, getting ip if there is a FUP packet within PSB+ (i.e. between PSB and PSBEND). Example: $ perf record -e intel_pt//u grep -rI pudding drivers [ perf record: Woken up 52 times to write data ] [ perf record: Captured and wrote 57.870 MB perf.data ] $ time perf script --itrace=bi | wc -l 58948289 real 1m23.863s user 1m23.251s sys 0m7.452s $ time perf script --itrace=biq | wc -l 3385694 real 0m4.453s user 0m4.455s sys 0m0.328s $ time perf script --itrace=biqq | wc -l 1883 real 0m0.047s user 0m0.043s sys 0m0.009s Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200710151104.15137-13-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-06perf intel-pt: Add support for decoding FUP/TIP onlyAdrian Hunter1-0/+31
Use the new itrace 'q' option to add support for a mode of decoding that ignores TNT, does not walk object code, but gets the ip from FUP and TIP packets. Example: $ perf record -e intel_pt//u grep -rI pudding drivers [ perf record: Woken up 52 times to write data ] [ perf record: Captured and wrote 57.870 MB perf.data ] $ time perf script --itrace=bi | wc -l 58948289 real 1m23.863s user 1m23.251s sys 0m7.452s $ time perf script --itrace=biq | wc -l 3385694 real 0m4.453s user 0m4.455s sys 0m0.328s Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200710151104.15137-12-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-06perf auxtrace: Add itrace 'q' option for quicker, less detailed decodingAdrian Hunter1-0/+3
The 'q' option is for modes of decoding that are quicker because they skip or omit decoding some aspects of trace data. If supported, the 'q' option may be repeated to increase the effect. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200710151104.15137-11-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-06perf intel-pt: Time filter logged perf eventsAdrian Hunter1-0/+3
Change the debug logging (when used with the --time option) to time filter logged perf events, but allow that to be overridden by using "d+a" instead of plain "d". That can reduce the size of the log file. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200710151104.15137-10-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-06perf intel-pt: Use itrace debug log flags to suppress some messagesAdrian Hunter1-1/+4
The "d" option may be followed by flags which affect what debug messages will or will not be logged. Each flag must be preceded by either '+' or '-'. The flags support by Intel PT are: -a Suppress logging of perf events Suppressing perf events is useful for decreasing the size of the log. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200710151104.15137-9-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-06perf auxtrace: Add optional log flags to the itrace 'd' optionAdrian Hunter1-0/+5
Allow the 'd' option to be followed by flags which will affect what debug messages will or will not be reported. Each flag must be preceded by either '+' or '-'. The flags are: a all perf events Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200710151104.15137-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-06perf intel-pt: Use itrace error flags to suppress some errorsAdrian Hunter1-1/+8
The itrace "e" option may be followed by flags which affect what errors will or will not be reported. Each flag must be preceded by either '+' or '-'. The flags supported by Intel PT are: -o Suppress overflow errors -l Suppress trace data lost errors For example, for errors but not overflow or data lost errors: --itrace=e-o-l Suppressing those errors can be useful for testing and debugging because they are not due to decoding. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200710151104.15137-7-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-06perf auxtrace: Add optional error flags to the itrace 'e' optionAdrian Hunter1-0/+6
Allow the 'e' option to be followed by flags which will affect what errors will or will not be reported. Each flag must be preceded by either '+' or '-'. The flags are: o overflow l trace data lost Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: http://lore.kernel.org/lkml/20200710151104.15137-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-04perf record: Introduce --control fd:ctl-fd[,ack-fd] optionsAlexey Budankov1-0/+39
Introduce --control fd:ctl-fd[,ack-fd] options to pass open file descriptors numbers from command line. Extend perf-record.txt file with --control fd:ctl-fd[,ack-fd] options description. Document possible usage model introduced by --control fd:ctl-fd[,ack-fd] options by providing example bash shell script. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/8dc01e1a-3a80-3f67-5385-4bc7112b0dd3@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-04perf record: Extend -D,--delay option with -1 valueAlexey Budankov1-2/+3
Extend -D,--delay option with -1 to start collection with events disabled to be enabled later by 'enable' command provided via control file descriptor. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/3e7d362c-7973-ee5d-e81e-c60ea22432c3@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-08-04perf stat: Introduce --control fd:ctl-fd[,ack-fd] optionsAlexey Budankov1-0/+39
Introduce --control fd:ctl-fd[,ack-fd] options to pass open file descriptors numbers from command line. Extend perf-stat.txt file with --control fd:ctl-fd[,ack-fd] options description. Document possible usage model introduced by --control fd:ctl-fd[,ack-fd] options by providing example bash shell script. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/feabd5cf-0155-fb0a-4587-c71571f2d517@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-30perf tools: Allow r0x<HEX> event syntaxJiri Olsa1-0/+1
Add support to specify raw event with 'r0<HEX>' syntax within pmu term syntax like: -e cpu/r0xdead/ It will be used to specify raw events in cases where they conflict with real pmu terms, like 'read', which is valid raw event syntax, but also a possible pmu term name as reported by Jin Yao. Reported-by: Jin Yao <yao.jin@linux.intel.com> Signed-off-by: Jiri Olsa <jolsa@kernel.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Michael Petlan <mpetlan@redhat.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Richter <tmricht@linux.ibm.com> Link: http://lore.kernel.org/lkml/20200725121959.1181869-1-jolsa@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-28perf bench: Add basic syscall benchmarkDavidlohr Bueso1-0/+11
The usefulness of having a standard way of testing syscall performance has come up from time to time[0]. Furthermore, some of our testing machinery (such as 'mmtests') already makes use of a simplified version of the microbenchmark. This patch mainly takes the same idea to measure syscall throughput compatible with 'perf-bench' via getppid(2), yet without any of the additional template stuff from Ingo's version (based on numa.c). The code is identical to what mmtests uses. [0] https://lore.kernel.org/lkml/20160201074156.GA27156@gmail.com/ Committer notes: Add mising stdlib.h and unistd.h to get the prototypes for exit() and getppid(). Committer testing: $ perf bench Usage: perf bench [<common options>] <collection> <benchmark> [<options>] # List of all available benchmark collections: sched: Scheduler and IPC benchmarks syscall: System call benchmarks mem: Memory access benchmarks numa: NUMA scheduling and MM benchmarks futex: Futex stressing benchmarks epoll: Epoll stressing benchmarks internals: Perf-internals benchmarks all: All benchmarks $ $ perf bench syscall # List of available benchmarks for collection 'syscall': basic: Benchmark for basic getppid(2) calls all: Run all syscall benchmarks $ perf bench syscall basic # Running 'syscall/basic' benchmark: # Executed 10000000 getppid() calls Total time: 3.679 [sec] 0.367957 usecs/op 2717708 ops/sec $ perf bench syscall all # Running syscall/basic benchmark... # Executed 10000000 getppid() calls Total time: 3.644 [sec] 0.364456 usecs/op 2743815 ops/sec $ Signed-off-by: Davidlohr Bueso <dbueso@suse.de> Acked-by: Josh Poimboeuf <jpoimboe@redhat.com> Acked-by: Mel Gorman <mgorman@techsingularity.net> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: http://lore.kernel.org/lkml/20190308181747.l36zqz2avtivrr3c@linux-r8p5 Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-22perf stat: extend -D,--delay option with -1 valueAlexey Budankov1-2/+3
Extend -D,--delay option with -1 value to start monitoring with events disabled to be enabled later by enable command provided via control file descriptor. Signed-off-by: Alexey Budankov <alexey.budankov@linux.intel.com> Acked-by: Jiri Olsa <jolsa@redhat.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/81ac633c-a844-5cfb-931c-820f6e6cbd12@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-07-10perf script: Add option --show-text-poke-eventsAdrian Hunter1-0/+4
Consistent with other new events, add an option to perf script to display text poke events and ksymbol events. Both text poke events and ksymbol events are displayed because some text pokes (e.g. ftrace trampolines) have corresponding ksymbol events. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Masami Hiramatsu <mhiramat@kernel.org> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Steven Rostedt (VMware) <rostedt@goodmis.org> Cc: x86@kernel.org Link: http://lore.kernel.org/lkml/20200512121922.8997-15-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-06-01perf auxtrace: Add four itrace optionsTan Xiaojun1-1/+5
This patch is to add four options to synthesize events which are described as below: 'f': synthesize first level cache events 'm': synthesize last level cache events 't': synthesize TLB events 'a': synthesize remote access events This four options will be used by ARM SPE as their first consumer. Signed-off-by: Tan Xiaojun <tanxiaojun@huawei.com> Tested-by: James Clark <james.clark@arm.com> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Al Grant <al.grant@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Link: http://lore.kernel.org/lkml/20200530122442.490-3-leo.yan@linaro.org Signed-off-by: James Clark <james.clark@arm.com> Signed-off-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-29perf tools: Add optional support for libpfm4Stephane Eranian3-0/+32
This patch links perf with the libpfm4 library if it is available and LIBPFM4 is passed to the build. The libpfm4 library contains hardware event tables for all processors supported by perf_events. It is a helper library that helps convert from a symbolic event name to the event encoding required by the underlying kernel interface. This library is open-source and available from: http://perfmon2.sf.net. With this patch, it is possible to specify full hardware events by name. Hardware filters are also supported. Events must be specified via the --pfm-events and not -e option. Both options are active at the same time and it is possible to mix and match: $ perf stat --pfm-events inst_retired:any_p:c=1:i -e cycles .... One needs to explicitely ask for its inclusion by using the LIBPFM4 make command line option, ie its opt-in rather than opt-out of feature detection and build support. Signed-off-by: Stephane Eranian <eranian@google.com> Reviewed-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexei Starovoitov <ast@kernel.org> Cc: Alexey Budankov <alexey.budankov@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Andrii Nakryiko <andriin@fb.com> Cc: Daniel Borkmann <daniel@iogearbox.net> Cc: Florian Fainelli <f.fainelli@gmail.com> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Igor Lubashev <ilubashe@akamai.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Jiwei Sun <jiwei.sun@windriver.com> Cc: John Garry <john.garry@huawei.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Martin KaFai Lau <kafai@fb.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: Yonghong Song <yhs@fb.com> Cc: bpf@vger.kernel.org Cc: netdev@vger.kernel.org Cc: yuzhoujian <yuzhoujian@didichuxing.com> Link: http://lore.kernel.org/lkml/20200505182943.218248-2-irogers@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2020-05-28perf record: Respect --no-switch-eventsAdrian Hunter1-1/+3
Context switch events are added automatically by Intel PT and Coresight. Make it possible to suppress them. That is useful for tracing the scheduler without the disturbance that the switch event processing creates. Example: Prerequisites: $ which perf ~/bin/perf $ sudo setcap "cap_sys_rawio,cap_sys_admin,cap_sys_ptrace,cap_syslog,cap_ipc_lock=ep" ~/bin/perf $ sudo chmod +r /proc/kcore Before: $ perf record --no-switch-events --kcore -a -e intel_pt//k -- sleep 0.001 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.938 MB perf.data ] $ perf script -D | grep PERF_RECORD_SWITCH | wc -l 572 After: $ perf record --no-switch-events --kcore -a -e intel_pt//k -- sleep 0.001 Warning: Intel Processor Trace decoding will not be possible except for kernel tracing! [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.838 MB perf.data ] $ perf script -D | grep PERF_RECORD_SWITCH | wc -l 0 $ sudo chmod go-r /proc/kcore $ sudo setcap -r ~/bin/perf Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mathieu Poirier <mathieu.poirier@linaro.org> Link: http://lore.kernel.org/lkml/20200528120859.21604-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
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