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2022-08-11perf c2c: Update documentation for new display option 'peer'Leo Yan1-7/+24
Since the new display option 'peer' is introduced, this patch is to update the documentation to reflect it. Reviewed-by: Ali Saidi <alisaidi@amazon.com> Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Anshuman Khandual <anshuman.khandual@arm.com> Cc: German Gomez <german.gomez@arm.com> Cc: Gustavo A. R. Silva <gustavoars@kernel.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: John Garry <john.garry@huawei.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Like Xu <likexu@tencent.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Mike Leach <mike.leach@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Timothy Hayes <timothy.hayes@arm.com> Cc: Will Deacon <will@kernel.org> Cc: linux-arm-kernel@lists.infradead.org Link: https://lore.kernel.org/r/20220811062451.435810-16-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-11perf tools: Tidy guest option documentationAdrian Hunter5-57/+38
Move common guest options into include files. Use attribute substitution to customize an example, using "[verse]" to define the block instead of a "literal" block which does not permit substitution. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20220811170411.84154-4-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-11perf inject: Fix missing guestmount option documentationAdrian Hunter1-0/+12
The 'perf inject' documentation is missing the guestmount option. Add it. Fixes: 97406a7e4fa6e5ca ("perf inject: Add support for injecting guest sideband events") Signed-off-by: Adrian Hunter <adrian.hunter@intel.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> Link: https://lore.kernel.org/r/20220811170411.84154-3-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-11perf script: Fix missing guest option documentationAdrian Hunter1-0/+23
The 'perf script' documentation is missing several options relating to guests. Add them. Fixes: 15a108af1a18b597 ("perf script: Allow specifying the files to process guest samples") Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20220811170411.84154-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-10perf script: Fix reference to perf insert instead of perf injectAdrian Hunter1-1/+1
Amend "perf insert" to "perf inject". Fixes: e28fb159f1163e76 ("perf script: Add machine_pid and vcpu") Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Ian Rogers <irogers@google.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20220809123258.9086-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-10perf stat: Add JSON output optionClaire Jensen1-0/+21
CSV output is tricky to format and column layout changes are susceptible to breaking parsers. New JSON-formatted output has variable names to identify fields that are consistent and informative, making the output parseable. CSV output example: 1.20,msec,task-clock:u,1204272,100.00,0.697,CPUs utilized 0,,context-switches:u,1204272,100.00,0.000,/sec 0,,cpu-migrations:u,1204272,100.00,0.000,/sec 70,,page-faults:u,1204272,100.00,58.126,K/sec JSON output example: {"counter-value" : "3805.723968", "unit" : "msec", "event" : "cpu-clock", "event-runtime" : 3805731510100.00, "pcnt-running" : 100.00, "metric-value" : 4.007571, "metric-unit" : "CPUs utilized"} {"counter-value" : "6166.000000", "unit" : "", "event" : "context-switches", "event-runtime" : 3805723045100.00, "pcnt-running" : 100.00, "metric-value" : 1.620191, "metric-unit" : "K/sec"} {"counter-value" : "466.000000", "unit" : "", "event" : "cpu-migrations", "event-runtime" : 3805727613100.00, "pcnt-running" : 100.00, "metric-value" : 122.447136, "metric-unit" : "/sec"} {"counter-value" : "208.000000", "unit" : "", "event" : "page-faults", "event-runtime" : 3805726799100.00, "pcnt-running" : 100.00, "metric-value" : 54.654516, "metric-unit" : "/sec"} Also added documentation for JSON option. There is some tidy up of CSV code including a potential memory over run in the os.nfields set up. To facilitate this an AGGR_MAX value is added. Committer notes: Fixed up using PRIu64 to format u64 values, not %lu. Committer testing: ⬢[acme@toolbox perf]$ perf stat -j sleep 1 {"counter-value" : "0.731750", "unit" : "msec", "event" : "task-clock:u", "event-runtime" : 731750, "pcnt-running" : 100.00, "metric-value" : 0.000731, "metric-unit" : "CPUs utilized"} {"counter-value" : "0.000000", "unit" : "", "event" : "context-switches:u", "event-runtime" : 731750, "pcnt-running" : 100.00, "metric-value" : 0.000000, "metric-unit" : "/sec"} {"counter-value" : "0.000000", "unit" : "", "event" : "cpu-migrations:u", "event-runtime" : 731750, "pcnt-running" : 100.00, "metric-value" : 0.000000, "metric-unit" : "/sec"} {"counter-value" : "75.000000", "unit" : "", "event" : "page-faults:u", "event-runtime" : 731750, "pcnt-running" : 100.00, "metric-value" : 102.494021, "metric-unit" : "K/sec"} {"counter-value" : "578765.000000", "unit" : "", "event" : "cycles:u", "event-runtime" : 379366, "pcnt-running" : 49.00, "metric-value" : 0.790933, "metric-unit" : "GHz"} {"counter-value" : "1298.000000", "unit" : "", "event" : "stalled-cycles-frontend:u", "event-runtime" : 768020, "pcnt-running" : 100.00, "metric-value" : 0.224271, "metric-unit" : "frontend cycles idle"} {"counter-value" : "21984.000000", "unit" : "", "event" : "stalled-cycles-backend:u", "event-runtime" : 768020, "pcnt-running" : 100.00, "metric-value" : 3.798433, "metric-unit" : "backend cycles idle"} {"counter-value" : "468197.000000", "unit" : "", "event" : "instructions:u", "event-runtime" : 768020, "pcnt-running" : 100.00, "metric-value" : 0.808959, "metric-unit" : "insn per cycle"} {"metric-value" : 0.046955, "metric-unit" : "stalled cycles per insn"} {"counter-value" : "103335.000000", "unit" : "", "event" : "branches:u", "event-runtime" : 768020, "pcnt-running" : 100.00, "metric-value" : 141.216262, "metric-unit" : "M/sec"} {"counter-value" : "2381.000000", "unit" : "", "event" : "branch-misses:u", "event-runtime" : 388654, "pcnt-running" : 50.00, "metric-value" : 2.304156, "metric-unit" : "of all branches"} ⬢[acme@toolbox perf]$ Signed-off-by: Claire Jensen <cjense@google.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alyssa Ross <hi@alyssa.is> Cc: Claire Jensen <clairej735@gmail.com> Cc: Florian Fischer <florian.fischer@muhq.space> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Like Xu <likexu@tencent.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Stephane Eranian <eranian@google.com> Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com> Link: https://lore.kernel.org/r/20220805200105.2020995-2-irogers@google.com Signed-off-by: Ian Rogers <irogers@google.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-02perf lock: Add --map-nr-entries optionNamhyung Kim1-0/+3
The --map-nr-entries option is to control number of max entries in the perf lock contention BPF maps. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Blake Jones <blakejones@google.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <songliubraving@fb.com> Cc: Waiman Long <longman@redhat.com> Cc: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20220802191004.347740-2-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-01perf lock: Implement cpu and task filters for BPFNamhyung Kim1-0/+17
Add -a/--all-cpus and -C/--cpu options for cpu filtering. Also -p/--pid and --tid options are added for task filtering. The short -t option is taken for --threads already. Tracking the command line workload is possible as well. $ sudo perf lock contention -a -b sleep 1 Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Blake Jones <blakejones@google.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Waiman Long <longman@redhat.com> Cc: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20220729200756.666106-4-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-08-01perf lock: Use BPF for lock contention analysisNamhyung Kim1-0/+5
Add -b/--use-bpf option to use BPF to collect lock contention stats. For simplicity it now runs system-wide and requires C-c to stop. Upcoming changes will add the usual filtering. $ sudo perf lock con -b ^C contended total wait max wait avg wait type caller 42 192.67 us 13.64 us 4.59 us spinlock queue_work_on+0x20 23 85.54 us 10.28 us 3.72 us spinlock worker_thread+0x14a 6 13.92 us 6.51 us 2.32 us mutex kernfs_iop_permission+0x30 3 11.59 us 10.04 us 3.86 us mutex kernfs_dop_revalidate+0x3c 1 7.52 us 7.52 us 7.52 us spinlock kthread+0x115 1 7.24 us 7.24 us 7.24 us rwlock:W sys_epoll_wait+0x148 2 7.08 us 3.99 us 3.54 us spinlock delayed_work_timer_fn+0x1b 1 6.41 us 6.41 us 6.41 us spinlock idle_balance+0xa06 2 2.50 us 1.83 us 1.25 us mutex kernfs_iop_lookup+0x2f 1 1.71 us 1.71 us 1.71 us mutex kernfs_iop_getattr+0x2c Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Blake Jones <blakejones@google.com> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Cc: Waiman Long <longman@redhat.com> Cc: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20220729200756.666106-3-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-07-26perf kwork: Implement BPF traceYang Jihong1-0/+10
'perf record' generates perf.data, which generates extra interrupts for hard disk, amount of data to be collected increases with time. Using eBPF trace can process the data in kernel, which solves the preceding two problems. Add -b/--use-bpf option for latency and report to support tracing kwork events using eBPF: 1. Create bpf prog and attach to tracepoints, 2. Start tracing after command is entered, 3. After user hit "ctrl+c", stop tracing and report, 4. Support CPU and name filtering. This commit implements the framework code and does not add specific event support. Test cases: # perf kwork rep -h Usage: perf kwork report [<options>] -b, --use-bpf Use BPF to measure kwork runtime -C, --cpu <cpu> list of cpus to profile -i, --input <file> input file name -n, --name <name> event name to profile -s, --sort <key[,key2...]> sort by key(s): runtime, max, count -S, --with-summary Show summary with statistics --time <str> Time span for analysis (start,stop) # perf kwork lat -h Usage: perf kwork latency [<options>] -b, --use-bpf Use BPF to measure kwork latency -C, --cpu <cpu> list of cpus to profile -i, --input <file> input file name -n, --name <name> event name to profile -s, --sort <key[,key2...]> sort by key(s): avg, max, count --time <str> Time span for analysis (start,stop) # perf kwork lat -b Unsupported bpf trace class irq # perf kwork rep -b Unsupported bpf trace class irq Signed-off-by: Yang Jihong <yangjihong1@huawei.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> 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> Link: https://lore.kernel.org/r/20220709015033.38326-15-yangjihong1@huawei.com [ Simplify work_findnew() ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-07-26perf kwork: Implement perf kwork timehistYang Jihong1-0/+65
Implements framework of perf kwork timehist, to provide an analysis of kernel work events. Test cases: # perf kwork tim Runtime start Runtime end Cpu Kwork name Runtime Delaytime (TYPE)NAME:NUM (msec) (msec) ----------------- ----------------- ------ ------------------------------ ---------- ---------- 91576.060290 91576.060344 [0000] (s)RCU:9 0.055 0.111 91576.061470 91576.061547 [0000] (s)SCHED:7 0.077 0.073 91576.062604 91576.062697 [0001] (s)RCU:9 0.094 0.409 91576.064443 91576.064517 [0002] (s)RCU:9 0.074 0.114 91576.065144 91576.065211 [0000] (s)SCHED:7 0.067 0.058 91576.066564 91576.066609 [0003] (s)RCU:9 0.045 0.110 91576.068495 91576.068559 [0000] (s)SCHED:7 0.064 0.059 91576.068900 91576.068996 [0004] (s)RCU:9 0.096 0.726 91576.069364 91576.069420 [0002] (s)RCU:9 0.056 0.082 91576.069649 91576.069701 [0004] (s)RCU:9 0.052 0.111 91576.070147 91576.070206 [0000] (s)SCHED:7 0.060 0.057 91576.073147 91576.073202 [0000] (s)SCHED:7 0.054 0.060 <SNIP> # perf kwork tim --max-stack 2 -g Runtime start Runtime end Cpu Kwork name Runtime Delaytime (TYPE)NAME:NUM (msec) (msec) ----------------- ----------------- ------ ------------------------------ ---------- ---------- 91576.060290 91576.060344 [0000] (s)RCU:9 0.055 0.111 irq_exit_rcu <- sysvec_apic_timer_interrupt 91576.061470 91576.061547 [0000] (s)SCHED:7 0.077 0.073 irq_exit_rcu <- sysvec_call_function_single 91576.062604 91576.062697 [0001] (s)RCU:9 0.094 0.409 irq_exit_rcu <- sysvec_apic_timer_interrupt 91576.064443 91576.064517 [0002] (s)RCU:9 0.074 0.114 irq_exit_rcu <- sysvec_apic_timer_interrupt 91576.065144 91576.065211 [0000] (s)SCHED:7 0.067 0.058 irq_exit_rcu <- sysvec_call_function_single 91576.066564 91576.066609 [0003] (s)RCU:9 0.045 0.110 irq_exit_rcu <- sysvec_apic_timer_interrupt 91576.068495 91576.068559 [0000] (s)SCHED:7 0.064 0.059 irq_exit_rcu <- sysvec_call_function_single 91576.068900 91576.068996 [0004] (s)RCU:9 0.096 0.726 irq_exit_rcu <- sysvec_apic_timer_interrupt 91576.069364 91576.069420 [0002] (s)RCU:9 0.056 0.082 irq_exit_rcu <- sysvec_apic_timer_interrupt 91576.069649 91576.069701 [0004] (s)RCU:9 0.052 0.111 irq_exit_rcu <- sysvec_apic_timer_interrupt <SNIP> Committer testing: # perf kwork -k workqueue timehist | head -40 Runtime start Runtime end Cpu Kwork name Runtime Delaytime (TYPE)NAME:NUM (msec) (msec) ----------------- ----------------- ------ ------------------------------ ---------- ---------- 26520.211825 26520.211832 [0019] (w)free_work 0.007 0.004 26520.212929 26520.212934 [0020] (w)free_work 0.005 0.004 26520.213226 26520.213228 [0014] (w)kfree_rcu_work 0.002 0.004 26520.214057 26520.214061 [0021] (w)free_work 0.004 0.004 26520.221239 26520.221241 [0007] (w)kfree_rcu_work 0.002 0.009 26520.223232 26520.223238 [0013] (w)psi_avgs_work 0.005 0.006 26520.230057 26520.230060 [0020] (w)free_work 0.003 0.003 26520.270428 26520.270434 [0015] (w)free_work 0.006 0.004 26520.270546 26520.270550 [0014] (w)free_work 0.004 0.003 26520.281626 26520.281629 [0015] (w)free_work 0.003 0.002 26520.287225 26520.287230 [0012] (w)psi_avgs_work 0.005 0.008 26520.287231 26520.287235 [0001] (w)psi_avgs_work 0.004 0.011 26520.287236 26520.287239 [0001] (w)psi_avgs_work 0.003 0.012 26520.329488 26520.329492 [0024] (w)free_work 0.004 0.004 26520.330600 26520.330605 [0007] (w)free_work 0.005 0.004 26520.334218 26520.334218 [0007] (w)kfree_rcu_monitor 0.001 0.002 26520.335220 26520.335221 [0005] (w)kfree_rcu_monitor 0.001 0.004 26520.343980 26520.343985 [0007] (w)free_work 0.005 0.002 26520.345093 26520.345097 [0006] (w)free_work 0.004 0.003 26520.351233 26520.351238 [0027] (w)psi_avgs_work 0.005 0.008 26520.353228 26520.353229 [0007] (w)kfree_rcu_work 0.001 0.002 26520.353229 26520.353231 [0005] (w)kfree_rcu_work 0.001 0.006 26520.382381 26520.382383 [0006] (w)free_work 0.003 0.002 26520.386547 26520.386548 [0006] (w)free_work 0.002 0.001 26520.391243 26520.391245 [0015] (w)console_callback 0.002 0.016 26520.415369 26520.415621 [0027] (w)btrfs_work_helper 0.252 26520.415351 26520.416174 [0002] (w)btrfs_work_helper 0.823 0.037 26520.415343 26520.416304 [0031] (w)btrfs_work_helper 0.961 26520.415335 26520.417078 [0001] (w)btrfs_work_helper 1.743 26520.415250 26520.417564 [0002] (w)wb_workfn 2.314 26520.424777 26520.424787 [0002] (w)btrfs_work_helper 0.010 26520.424788 26520.424798 [0002] (w)btrfs_work_helper 0.010 26520.424790 26520.424805 [0001] (w)btrfs_work_helper 0.016 0.016 26520.424801 26520.424807 [0002] (w)btrfs_work_helper 0.006 26520.424809 26520.424831 [0002] (w)btrfs_work_helper 0.022 0.030 26520.424824 26520.424835 [0027] (w)btrfs_work_helper 0.011 26520.424809 26520.424867 [0001] (w)btrfs_work_helper 0.059 0.032 # Signed-off-by: Yang Jihong <yangjihong1@huawei.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> 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> Link: https://lore.kernel.org/r/20220709015033.38326-14-yangjihong1@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-07-26perf kwork: Implement perf kwork latencyYang Jihong1-0/+29
Implements framework of perf kwork latency, which is used to report time properties such as delay time and frequency. Test cases: # perf kwork lat -h Usage: perf kwork latency [<options>] -C, --cpu <cpu> list of cpus to profile -i, --input <file> input file name -n, --name <name> event name to profile -s, --sort <key[,key2...]> sort by key(s): avg, max, count --time <str> Time span for analysis (start,stop) # perf kwork lat -C 199 Requested CPU 199 too large. Consider raising MAX_NR_CPUS Invalid cpu bitmap # perf kwork lat -i perf_no_exist.data failed to open perf_no_exist.data: No such file or directory # perf kwork lat -s avg1 Error: Unknown --sort key: `avg1' Usage: perf kwork latency [<options>] -C, --cpu <cpu> list of cpus to profile -i, --input <file> input file name -n, --name <name> event name to profile -s, --sort <key[,key2...]> sort by key(s): avg, max, count --time <str> Time span for analysis (start,stop) # perf kwork lat --time FFFF, Invalid time span # perf kwork lat Kwork Name | Cpu | Avg delay | Count | Max delay | Max delay start | Max delay end | -------------------------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------------------------- INFO: 36.570% skipped events (31537 including 0 raise, 31537 entry, 0 exit) Since there are no latency-enabled events, the output is empty. Signed-off-by: Yang Jihong <yangjihong1@huawei.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> 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> Link: https://lore.kernel.org/r/20220709015033.38326-11-yangjihong1@huawei.com [ Add {} for multiline if blocks ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-07-26perf kwork: Implement 'report' subcommandYang Jihong1-0/+33
Implements framework of 'perf kwork report', which is used to report time properties such as run time and frequency: Test cases: # perf kwork Usage: perf kwork [<options>] {record|report} -D, --dump-raw-trace dump raw trace in ASCII -f, --force don't complain, do it -k, --kwork <kwork> list of kwork to profile (irq, softirq, workqueue, etc) -v, --verbose be more verbose (show symbol address, etc) # perf kwork report -h Usage: perf kwork report [<options>] -C, --cpu <cpu> list of cpus to profile -i, --input <file> input file name -n, --name <name> event name to profile -s, --sort <key[,key2...]> sort by key(s): runtime, max, count -S, --with-summary Show summary with statistics --time <str> Time span for analysis (start,stop) # perf kwork report Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end | -------------------------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------------------------- # perf kwork report -S Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end | -------------------------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------------------------- Total count : 0 Total runtime (msec) : 0.000 (0.000% load average) Total time span (msec) : 0.000 -------------------------------------------------------------------------------------------------------------------------------- # perf kwork report -C 0,100 Requested CPU 100 too large. Consider raising MAX_NR_CPUS Invalid cpu bitmap # perf kwork report -s runtime1 Error: Unknown --sort key: `runtime1' Usage: perf kwork report [<options>] -C, --cpu <cpu> list of cpus to profile -i, --input <file> input file name -n, --name <name> event name to profile -s, --sort <key[,key2...]> sort by key(s): runtime, max, count -S, --with-summary Show summary with statistics --time <str> Time span for analysis (start,stop) # perf kwork report -i perf_no_exist.data failed to open perf_no_exist.data: No such file or directory # perf kwork report --time 00FFF, Invalid time span Since there are no report supported events, the output is empty. Briefly describe the data structure: 1. "class" indicates event type. For example, irq and softiq correspond to different types. 2. "cluster" refers to a specific event corresponding to a type. For example, RCU and TIMER in softirq correspond to different clusters, which contains three types of events: raise, entry, and exit. 3. "atom" includes time of each sample and sample of the previous phase. (For example, exit corresponds to entry, which is used for timehist.) Committer notes: - Add {} for multiline if blocks. - report_print_work() should either return that ret variable that accounts how many bytes were printed or stop accounting and be void. Do the former for now to avoid this: builtin-kwork.c:534:6: error: variable 'ret' set but not used [-Werror,-Wunused-but-set-variable] int ret = 0; ^ 1 error generated. When building with: ⬢[acme@toolbox perf]$ clang --version clang version 13.0.0 (https://github.com/llvm/llvm-project e8991caea8690ec2d17b0b7e1c29bf0da6609076) Also: - if ((dst_type >= 0) && (dst_type < KWORK_TRACE_MAX)) { + if (dst_type < KWORK_TRACE_MAX) { Several versions of clang and at least this gcc: 3 51.40 alpine:3.9 : FAIL gcc version 8.3.0 (Alpine 8.3.0) builtin-kwork.c:411:16: error: comparison of unsigned enum expression >= 0 is always true [-Werror,-Wtautological-compare] if ((dst_type >= 0) && (dst_type < KWORK_TRACE_MAX)) { As the first entry in a enum is zero. Signed-off-by: Yang Jihong <yangjihong1@huawei.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> 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> Link: https://lore.kernel.org/r/20220709015033.38326-7-yangjihong1@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-07-26perf kwork: Add workqueue kwork record supportYang Jihong1-1/+1
Record workqueue events workqueue:workqueue_activate_work, workqueue:workqueue_execute_start & workqueue:workqueue_execute_end Tese cases: Record all events: # perf kwork record -o perf_kwork.date -- sleep 1 [ perf record: Woken up 0 times to write data ] [ perf record: Captured and wrote 0.857 MB perf_kwork.date ] # # perf evlist -i perf_kwork.date irq:irq_handler_entry irq:irq_handler_exit irq:softirq_raise irq:softirq_entry irq:softirq_exit workqueue:workqueue_activate_work workqueue:workqueue_execute_start workqueue:workqueue_execute_end dummy:HG # Tip: use 'perf evlist --trace-fields' to show fields for tracepoint events Record workqueue events: # perf kwork -k workqueue record -o perf_kwork.date -- sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.081 MB perf_kwork.date ] # # perf evlist -i perf_kwork.date workqueue:workqueue_activate_work workqueue:workqueue_execute_start workqueue:workqueue_execute_end dummy:HG # Tip: use 'perf evlist --trace-fields' to show fields for tracepoint events Committer testing: # perf kwork record sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 3.430 MB perf.data (24130 samples) ] # perf evlist -v irq:irq_handler_entry: type: 2, size: 128, config: 0x97, { sample_period, sample_freq }: 1, sample_type: IP|TID|TIME|CPU|PERIOD|RAW|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, sample_id_all: 1, exclude_guest: 1 irq:irq_handler_exit: type: 2, size: 128, config: 0x96, { sample_period, sample_freq }: 1, sample_type: IP|TID|TIME|CPU|PERIOD|RAW|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, sample_id_all: 1, exclude_guest: 1 irq:softirq_raise: type: 2, size: 128, config: 0x93, { sample_period, sample_freq }: 1, sample_type: IP|TID|TIME|CPU|PERIOD|RAW|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, sample_id_all: 1, exclude_guest: 1 irq:softirq_entry: type: 2, size: 128, config: 0x95, { sample_period, sample_freq }: 1, sample_type: IP|TID|TIME|CPU|PERIOD|RAW|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, sample_id_all: 1, exclude_guest: 1 irq:softirq_exit: type: 2, size: 128, config: 0x94, { sample_period, sample_freq }: 1, sample_type: IP|TID|TIME|CPU|PERIOD|RAW|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, sample_id_all: 1, exclude_guest: 1 workqueue:workqueue_activate_work: type: 2, size: 128, config: 0x106, { sample_period, sample_freq }: 1, sample_type: IP|TID|TIME|CPU|PERIOD|RAW|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, sample_id_all: 1, exclude_guest: 1 workqueue:workqueue_execute_start: type: 2, size: 128, config: 0x105, { sample_period, sample_freq }: 1, sample_type: IP|TID|TIME|CPU|PERIOD|RAW|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, sample_id_all: 1, exclude_guest: 1 workqueue:workqueue_execute_end: type: 2, size: 128, config: 0x104, { sample_period, sample_freq }: 1, sample_type: IP|TID|TIME|CPU|PERIOD|RAW|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, sample_id_all: 1, exclude_guest: 1 dummy:HG: type: 1, size: 128, config: 0x9, { sample_period, sample_freq }: 1, sample_type: IP|TID|TIME|CPU|RAW|IDENTIFIER, read_format: ID, inherit: 1, mmap: 1, comm: 1, task: 1, sample_id_all: 1, mmap2: 1, comm_exec: 1, ksymbol: 1, bpf_event: 1 # Tip: use 'perf evlist --trace-fields' to show fields for tracepoint events # perf script | grep workqueue | head swapper 0 [018] 26035.043289: workqueue:workqueue_activate_work: work struct 0xffff8b8ffeeae368 kworker/18:2-ev 70440 [018] 26035.043293: workqueue:workqueue_execute_start: work struct 0xffff8b8ffeeae368: function free_work kworker/18:2-ev 70440 [018] 26035.043301: workqueue:workqueue_execute_end: work struct 0xffff8b8ffeeae368: function free_work swapper 0 [021] 26035.044704: workqueue:workqueue_activate_work: work struct 0xffff8b8ffef6e368 kworker/21:0-ev 4080535 [021] 26035.044709: workqueue:workqueue_execute_start: work struct 0xffff8b8ffef6e368: function free_work kworker/21:0-ev 4080535 [021] 26035.044716: workqueue:workqueue_execute_end: work struct 0xffff8b8ffef6e368: function free_work swapper 0 [018] 26035.045230: workqueue:workqueue_activate_work: work struct 0xffff8b8ffeeae368 kworker/18:2-ev 70440 [018] 26035.045232: workqueue:workqueue_execute_start: work struct 0xffff8b8ffeeae368: function free_work kworker/18:2-ev 70440 [018] 26035.045235: workqueue:workqueue_execute_end: work struct 0xffff8b8ffeeae368: function free_work swapper 0 [001] 26035.052046: workqueue:workqueue_activate_work: work struct 0xffff8b8108901590 # Signed-off-by: Yang Jihong <yangjihong1@huawei.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> 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> Link: https://lore.kernel.org/r/20220709015033.38326-5-yangjihong1@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-07-26perf kwork: Add softirq kwork record supportYang Jihong1-1/+1
Record softirq events irq:softirq_raise, irq:softirq_entry & irq:softirq_exit. Test cases: Record all events: # perf kwork record -o perf_kwork.date -- sleep 1 [ perf record: Woken up 0 times to write data ] [ perf record: Captured and wrote 0.897 MB perf_kwork.date ] # # perf evlist -i perf_kwork.date irq:irq_handler_entry irq:irq_handler_exit irq:softirq_raise irq:softirq_entry irq:softirq_exit dummy:HG # Tip: use 'perf evlist --trace-fields' to show fields for tracepoint events Record softirq events: # perf kwork -k softirq record -o perf_kwork.date -- sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.141 MB perf_kwork.date ] # # perf evlist -i perf_kwork.date irq:softirq_raise irq:softirq_entry irq:softirq_exit dummy:HG # Tip: use 'perf evlist --trace-fields' to show fields for tracepoint events Committer testing: # perf kwork record sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 3.078 MB perf.data (17433 samples) ] # perf evlist -v irq:irq_handler_entry: type: 2, size: 128, config: 0x97, { sample_period, sample_freq }: 1, sample_type: IP|TID|TIME|CPU|PERIOD|RAW|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, sample_id_all: 1, exclude_guest: 1 irq:irq_handler_exit: type: 2, size: 128, config: 0x96, { sample_period, sample_freq }: 1, sample_type: IP|TID|TIME|CPU|PERIOD|RAW|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, sample_id_all: 1, exclude_guest: 1 irq:softirq_raise: type: 2, size: 128, config: 0x93, { sample_period, sample_freq }: 1, sample_type: IP|TID|TIME|CPU|PERIOD|RAW|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, sample_id_all: 1, exclude_guest: 1 irq:softirq_entry: type: 2, size: 128, config: 0x95, { sample_period, sample_freq }: 1, sample_type: IP|TID|TIME|CPU|PERIOD|RAW|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, sample_id_all: 1, exclude_guest: 1 irq:softirq_exit: type: 2, size: 128, config: 0x94, { sample_period, sample_freq }: 1, sample_type: IP|TID|TIME|CPU|PERIOD|RAW|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, sample_id_all: 1, exclude_guest: 1 dummy:HG: type: 1, size: 128, config: 0x9, { sample_period, sample_freq }: 1, sample_type: IP|TID|TIME|CPU|RAW|IDENTIFIER, read_format: ID, inherit: 1, mmap: 1, comm: 1, task: 1, sample_id_all: 1, mmap2: 1, comm_exec: 1, ksymbol: 1, bpf_event: 1 # Tip: use 'perf evlist --trace-fields' to show fields for tracepoint events # perf script | head migration/12 73 [012] 25884.940992: irq:softirq_raise: vec=9 [action=RCU] migration/12 73 [012] 25884.940994: irq:softirq_entry: vec=9 [action=RCU] migration/12 73 [012] 25884.940995: irq:softirq_exit: vec=9 [action=RCU] swapper 0 [004] 25884.940995: irq:softirq_raise: vec=9 [action=RCU] swapper 0 [004] 25884.940998: irq:softirq_entry: vec=9 [action=RCU] swapper 0 [004] 25884.940999: irq:softirq_exit: vec=9 [action=RCU] cc1 71212 [021] 25884.941990: irq:softirq_raise: vec=9 [action=RCU] swapper 0 [004] 25884.941991: irq:softirq_raise: vec=9 [action=RCU] cc1 71212 [021] 25884.941992: irq:softirq_raise: vec=7 [action=SCHED] perf-exec 71208 [013] 25884.941992: irq:softirq_raise: vec=9 [action=RCU] # Signed-off-by: Yang Jihong <yangjihong1@huawei.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> 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> Link: https://lore.kernel.org/r/20220709015033.38326-4-yangjihong1@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-07-26perf kwork: Add irq kwork record supportYang Jihong1-1/+1
Record interrupt events irq:irq_handler_entry & irq_handler_exit Test cases: # perf kwork record -o perf_kwork.date -- sleep 1 [ perf record: Woken up 0 times to write data ] [ perf record: Captured and wrote 0.556 MB perf_kwork.date ] # # perf evlist -i perf_kwork.date irq:irq_handler_entry irq:irq_handler_exit dummy:HG # Tip: use 'perf evlist --trace-fields' to show fields for tracepoint events # Signed-off-by: Yang Jihong <yangjihong1@huawei.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> 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> Link: https://lore.kernel.org/r/20220709015033.38326-3-yangjihong1@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-07-26perf kwork: New tool to trace time properties of kernel work (such as ↵Yang Jihong1-0/+43
softirq, and workqueue) The 'perf kwork' tool is used to trace time properties of kernel work (such as irq, softirq, and workqueue), including runtime, latency, and timehist, using the infrastructure in the perf tools to allow tracing extra targets. This is the first commit to reuse the 'perf record' framework code to implement a simple record function, kwork is not supported currently. Test cases: # perf usage: perf [--version] [--help] [OPTIONS] COMMAND [ARGS] The most commonly used perf commands are: <SNIP> iostat Show I/O performance metrics kallsyms Searches running kernel for symbols kmem Tool to trace/measure kernel memory properties kvm Tool to trace/measure kvm guest os kwork Tool to trace/measure kernel work properties (latencies) list List all symbolic event types lock Analyze lock events mem Profile memory accesses record Run a command and record its profile into perf.data <SNIP> See 'perf help COMMAND' for more information on a specific command. # perf kwork Usage: perf kwork [<options>] {record} -D, --dump-raw-trace dump raw trace in ASCII -f, --force don't complain, do it -k, --kwork <kwork> list of kwork to profile -v, --verbose be more verbose (show symbol address, etc) # perf kwork record -- sleep 1 [ perf record: Woken up 0 times to write data ] [ perf record: Captured and wrote 1.787 MB perf.data ] Signed-off-by: Yang Jihong <yangjihong1@huawei.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> 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> Link: https://lore.kernel.org/r/20220709015033.38326-2-yangjihong1@huawei.com [ Add {} for multiline if blocks ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-07-25perf lock: Support -t option for 'contention' subcommandNamhyung Kim1-0/+4
Like perf lock report, it can report lock contention stat of each task. $ perf lock contention -t contended total wait max wait avg wait pid comm 5 945.20 us 902.08 us 189.04 us 316167 EventManager_De 33 98.17 us 6.78 us 2.97 us 766063 kworker/0:1-get 7 92.47 us 61.26 us 13.21 us 316170 EventManager_De 14 76.31 us 12.87 us 5.45 us 12949 timedcall 24 76.15 us 12.27 us 3.17 us 767992 sched-pipe 15 75.62 us 11.93 us 5.04 us 15127 switchto-defaul 24 71.84 us 5.59 us 2.99 us 629168 kworker/u513:2- 17 67.41 us 7.94 us 3.96 us 13504 coroner- 1 59.56 us 59.56 us 59.56 us 316165 EventManager_De 14 56.21 us 6.89 us 4.01 us 0 swapper Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Waiman Long <longman@redhat.com> Cc: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20220725183124.368304-6-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-07-25perf lock: Add -k and -F options to 'contention' subcommandNamhyung Kim1-0/+15
Like perf lock report, add -k/--key and -F/--field options to control output formatting and sorting. Note that it has slightly different default options as some fields are not available and to optimize the screen space. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Waiman Long <longman@redhat.com> Cc: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20220725183124.368304-5-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-07-25perf lock: Add 'contention' subcommandNamhyung Kim1-1/+3
The 'perf lock contention' processes the lock contention events and displays the result like perf lock report. Right now, there's not much difference between the two but the lock contention specific features will come soon. $ perf lock contention contended total wait max wait avg wait type caller 238 1.41 ms 29.20 us 5.94 us spinlock update_blocked_averages+0x4c 1 902.08 us 902.08 us 902.08 us rwsem:R do_user_addr_fault+0x1dd 81 330.30 us 17.24 us 4.08 us spinlock _nohz_idle_balance+0x172 2 89.54 us 61.26 us 44.77 us spinlock do_anonymous_page+0x16d 24 78.36 us 12.27 us 3.27 us mutex pipe_read+0x56 2 71.58 us 59.56 us 35.79 us spinlock __handle_mm_fault+0x6aa 6 25.68 us 6.89 us 4.28 us spinlock do_idle+0x28d 1 18.46 us 18.46 us 18.46 us rtmutex exec_fw_cmd+0x21b 3 15.25 us 6.26 us 5.08 us spinlock tick_do_update_jiffies64+0x2c Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Waiman Long <longman@redhat.com> Cc: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20220725183124.368304-4-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-07-20perf intel-pt: Add documentation for tracing guest machine user spaceAdrian Hunter1-4/+177
Now it is possible to decode a host Intel PT trace including guest machine user space, add documentation for the steps needed to do it. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Ian Rogers <irogers@google.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: kvm@vger.kernel.org Link: https://lore.kernel.org/r/20220711093218.10967-36-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-07-20perf inject: Add support for injecting guest sideband eventsAdrian Hunter1-0/+17
Inject events from a perf.data file recorded in a virtual machine into a perf.data file recorded on the host at the same time. Only side band events (e.g. mmap, comm, fork, exit etc) and build IDs are injected. Additionally, the guest kcore_dir is copied as kcore_dir__ appended to the machine PID. This is non-trivial because: o It is not possible to process 2 sessions simultaneously so instead events are first written to a temporary file. o To avoid conflict, guest sample IDs are replaced with new unused sample IDs. o Guest event's CPU is changed to be the host CPU because it is more useful for reporting and analysis. o Sample ID is mapped to machine PID which is recorded with VCPU in the id index. This is important to allow guest events to be related to the guest machine and VCPU. o Timestamps must be converted. o Events are inserted to obey finished-round ordering. The anticipated use-case is: - start recording sideband events in a guest machine - start recording an AUX area trace on the host which can trace also the guest (e.g. Intel PT) - run test case on the guest - stop recording on the host - stop recording on the guest - copy the guest perf.data file to the host - inject the guest perf.data file sideband events into the host perf.data file using perf inject - the resulting perf.data file can now be used Subsequent patches provide Intel PT support for this. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: kvm@vger.kernel.org Link: https://lore.kernel.org/r/20220711093218.10967-25-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-07-20perf dlfilter: Add machine_pid and vcpuAdrian Hunter1-0/+22
Add machine_pid and vcpu to struct perf_dlfilter_sample. The 'size' can be used to determine if the values are present, however machine_pid is zero if unused in any case. vcpu should be ignored if machine_pid is zero. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Ian Rogers <irogers@google.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: kvm@vger.kernel.org Link: https://lore.kernel.org/r/20220711093218.10967-17-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-07-20perf script: Add machine_pid and vcpuAdrian Hunter1-1/+6
Add fields machine_pid and vcpu. These are displayed only if machine_pid is non-zero. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: kvm@vger.kernel.org Link: https://lore.kernel.org/r/20220711093218.10967-16-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-07-20perf script: Add --dump-unsorted-raw-trace optionAdrian Hunter1-0/+3
When reviewing the results of perf inject, it is useful to be able to see the events in the order they appear in the file. So add --dump-unsorted-raw-trace option to do an unsorted dump. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Ian Rogers <irogers@google.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: kvm@vger.kernel.org Link: https://lore.kernel.org/r/20220711093218.10967-8-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-07-18perf buildid-list: Add a "-m" option to show kernel and modules build-idsBlake Jones1-0/+4
This new option displays all of the information needed to do external BuildID-based symbolization of kernel stack traces, such as those collected by bpf_get_stackid(). For each kernel module plus the main kernel, it displays the BuildID, the start and end virtual addresses of that module's text range (rounded out to page boundaries), and the pathname of the module. When run as a non-privileged user, the actual addresses of the modules' text ranges are not available, so the tools displays "0, <text length>" for kernel modules and "0, 0xffffffffffffffff" for the kernel itself. Sample output: root# perf buildid-list -m cf6df852fd4da122d616153353cc8f560fd12fe0 ffffffffa5400000 ffffffffa6001e27 [kernel.kallsyms] 1aa7209aa2acb067d66ed6cf7676d65066384d61 ffffffffc0087000 ffffffffc008b000 /lib/modules/5.15.15-1rodete2-amd64/kernel/crypto/sha512_generic.ko 3857815b5bf0183697b68f8fe0ea06121644041e ffffffffc008c000 ffffffffc0098000 /lib/modules/5.15.15-1rodete2-amd64/kernel/arch/x86/crypto/sha512-ssse3.ko 4081fde0bca2bc097cb3e9d1efcb836047d485f1 ffffffffc0099000 ffffffffc009f000 /lib/modules/5.15.15-1rodete2-amd64/kernel/drivers/acpi/button.ko 1ef81ba4890552ea6b0314f9635fc43fc8cef568 ffffffffc00a4000 ffffffffc00aa000 /lib/modules/5.15.15-1rodete2-amd64/kernel/crypto/cryptd.ko cc5c985506cb240d7d082b55ed260cbb851f983e ffffffffc00af000 ffffffffc00b6000 /lib/modules/5.15.15-1rodete2-amd64/kernel/drivers/i2c/busses/i2c-piix4.ko [...] Committer notes: u64 formatter should be PRIx64 for printing as hex numbers, fix this: 28 5.28 debian:experimental-x-mips : FAIL gcc version 11.2.0 (Debian 11.2.0-18) builtin-buildid-list.c: In function 'buildid__map_cb': builtin-buildid-list.c:32:24: error: format '%lx' expects argument of type 'long unsigned int', but argument 3 has type 'u64' {aka 'long long unsigned int'} [-Werror=format=] 32 | printf("%s %16lx %16lx", bid_buf, map->start, map->end); | ~~~~^ ~~~~~~~~~~ | | | | long unsigned int u64 {aka long long unsigned int} | %16llx builtin-buildid-list.c:32:30: error: format '%lx' expects argument of type 'long unsigned int', but argument 4 has type 'u64' {aka 'long long unsigned int'} [-Werror=format=] 32 | printf("%s %16lx %16lx", bid_buf, map->start, map->end); | ~~~~^ ~~~~~~~~ | | | | long unsigned int u64 {aka long long unsigned int} | %16llx cc1: all warnings being treated as errors Signed-off-by: Blake Jones <blakejones@google.com> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20220629213632.3899212-1-blakejones@google.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-07-12perf record: Allow to specify max stack depth of fp callchainNamhyung Kim1-0/+5
Currently it has no interface to specify the max stack depth for perf record. Extend the command line parameter to accept a number after 'fp' to specify the depth like '--call-graph fp,32'. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Waiman Long <longman@redhat.com> Cc: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20220615163222.1275500-7-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-07-12perf lock: Allow to use different kernel symbolsNamhyung Kim1-0/+7
Add --vmlinux and --kallsyms options to support data file from different kernels. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Boqun Feng <boqun.feng@gmail.com> Cc: Davidlohr Bueso <dave@stgolabs.net> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Waiman Long <longman@redhat.com> Cc: Will Deacon <will@kernel.org> Link: https://lore.kernel.org/r/20220615163222.1275500-3-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-06-24perf header: Record non-CPU PMU capabilitiesRavi Bangoria1-4/+6
PMUs advertise their capabilities via sysfs attribute files but the perf tool currently parses only core(CPU) or hybrid core PMU capabilities. Add support of recording non-core PMU capabilities int perf.data header. Note that a newly proposed HEADER_PMU_CAPS is replacing existing HEADER_HYBRID_CPU_PMU_CAPS. Special care is taken for hybrid core PMUs by writing their capabilities first in the perf.data header to make sure new perf.data file being read by old perf tool does not break. Reviewed-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Ravi Bangoria <ravi.bangoria@amd.com> Acked-by: Namhyung Kim <namhyung@kernel.org> Cc: Ananth Narayan <ananth.narayan@amd.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Borislav Petkov <bp@alien8.de> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Kim Phillips <kim.phillips@amd.com> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Robert Richter <rrichter@amd.com> Cc: Sandipan Das <sandipan.das@amd.com> Cc: Santosh Shukla <santosh.shukla@amd.com> Cc: Stephane Eranian <eranian@google.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: like.xu.linux@gmail.com Cc: x86@kernel.org Link: https://lore.kernel.org/r/20220604044519.594-6-ravi.bangoria@amd.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-06-23perf record: Add finished init eventAdrian Hunter1-0/+10
In preparation for recording sideband events in a virtual machine guest so that they can be injected into a host perf.data file. This is needed to enable injecting events after the initial synthesized user events (that have an all zero id sample) but before regular events. Committer notes: Add entry about PERF_RECORD_FINISHED_INIT to tools/perf/Documentation/perf.data-file-format.txt. Committer testing: Before: # perf report -D | grep FINISHED 0 0x5910 [0x8]: PERF_RECORD_FINISHED_ROUND FINISHED_ROUND events: 1 ( 0.5%) # After: # perf record -- sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.020 MB perf.data (7 samples) ] # perf report -D | grep FINISHED 0 0x5068 [0x8]: PERF_RECORD_FINISHED_INIT: unhandled! 0 0x5390 [0x8]: PERF_RECORD_FINISHED_ROUND FINISHED_ROUND events: 1 ( 0.5%) FINISHED_INIT events: 1 ( 0.5%) # Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Ian Rogers <irogers@google.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20220610113316.6682-5-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-06-23perf record: Add new option to sample identifierAdrian Hunter1-0/+5
In preparation for recording sideband events in a virtual machine guest so that they can be injected into a host perf.data file. Add an option to always include sample type PERF_SAMPLE_IDENTIFIER. Committer testing: # perf record sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.020 MB perf.data (7 samples) ] # perf evlist -v cycles: size: 128, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|PERIOD, read_format: ID, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, task: 1, sample_id_all: 1, mmap2: 1, comm_exec: 1, ksymbol: 1, bpf_event: 1 # # # perf record --sample-identifier sleep 1 [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.022 MB perf.data (7 samples) ] # perf evlist -v cycles: size: 128, { sample_period, sample_freq }: 4000, sample_type: IP|TID|TIME|PERIOD|IDENTIFIER, read_format: ID, disabled: 1, inherit: 1, mmap: 1, comm: 1, freq: 1, enable_on_exec: 1, task: 1, sample_id_all: 1, mmap2: 1, comm_exec: 1, ksymbol: 1, bpf_event: 1 # Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Acked-by: Ian Rogers <irogers@google.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20220615052511.4441-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-06-03perf docs: Correct typo of event_sourcesIan Rogers3-3/+3
The sysfs directory is called event_source. Before: $ ls -la /sys/bus/event_sources/devices/cpu/format/ ls: cannot access '/sys/bus/event_sources/devices/cpu/format/': No such file or directory $ After: $ ls -la /sys/bus/event_source/devices/cpu/format/ total 0 drwxr-xr-x. 2 root root 0 Jun 2 15:36 . drwxr-xr-x. 6 root root 0 Jun 2 15:35 .. -r--r--r--. 1 root root 4096 Jun 2 15:36 any -r--r--r--. 1 root root 4096 Jun 2 15:36 cmask -r--r--r--. 1 root root 4096 Jun 2 15:36 edge -r--r--r--. 1 root root 4096 Jun 2 15:36 event -r--r--r--. 1 root root 4096 Jun 2 15:36 frontend -r--r--r--. 1 root root 4096 Jun 2 15:36 inv -r--r--r--. 1 root root 4096 Jun 2 15:36 ldlat -r--r--r--. 1 root root 4096 Jun 2 15:36 offcore_rsp -r--r--r--. 1 root root 4096 Jun 2 15:36 pc -r--r--r--. 1 root root 4096 Jun 2 15:36 umask $ Reviewed-by: Sandipan Das <sandipan.das@amd.com> Signed-off-by: Ian Rogers <irogers@google.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com> Cc: Alyssa Ross <hi@alyssa.is> Cc: German Gomez <german.gomez@arm.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jin Yao <yao.jin@linux.intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Joshua Martinez <joshuamart@google.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Like Xu <likexu@tencent.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Zhengjun Xing <zhengjun.xing@linux.intel.com> Link: https://lore.kernel.org/r/20220603045744.2815559-1-irogers@google.com Reported-by: Kevin Nomura <nomurak@google.com> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-05-26perf record: Enable off-cpu analysis with BPFNamhyung Kim1-0/+10
Add --off-cpu option to enable the off-cpu profiling with BPF. It'd use a bpf_output event and rename it to "offcpu-time". Samples will be synthesized at the end of the record session using data from a BPF map which contains the aggregated off-cpu time at context switches. So it needs root privilege to get the off-cpu profiling. Each sample will have a separate user stacktrace so it will skip kernel threads. The sample ip will be set from the stacktrace and other sample data will be updated accordingly. Currently it only handles some basic sample types. The sample timestamp is set to a dummy value just not to bother with other events during the sorting. So it has a very big initial value and increase it on processing each samples. Good thing is that it can be used together with regular profiling like cpu cycles. If you don't want to that, you can use a dummy event to enable off-cpu profiling only. Example output: $ sudo perf record --off-cpu perf bench sched messaging -l 1000 $ sudo perf report --stdio --call-graph=no # Total Lost Samples: 0 # # Samples: 41K of event 'cycles' # Event count (approx.): 42137343851 ... # Samples: 1K of event 'offcpu-time' # Event count (approx.): 587990831640 # # Children Self Command Shared Object Symbol # ........ ........ ............... .................. ......................... # 81.66% 0.00% sched-messaging libc-2.33.so [.] __libc_start_main 81.66% 0.00% sched-messaging perf [.] cmd_bench 81.66% 0.00% sched-messaging perf [.] main 81.66% 0.00% sched-messaging perf [.] run_builtin 81.43% 0.00% sched-messaging perf [.] bench_sched_messaging 40.86% 40.86% sched-messaging libpthread-2.33.so [.] __read 37.66% 37.66% sched-messaging libpthread-2.33.so [.] __write 2.91% 2.91% sched-messaging libc-2.33.so [.] __poll ... As you can see it spent most of off-cpu time in read and write in bench_sched_messaging(). The --call-graph=no was added just to make the output concise here. It uses perf hooks facility to control BPF program during the record session rather than adding new BPF/off-cpu specific calls. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Acked-by: Ian Rogers <irogers@google.com> Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Blake Jones <blakejones@google.com> Cc: Hao Luo <haoluo@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Milian Wolff <milian.wolff@kdab.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Song Liu <songliubraving@fb.com> Cc: bpf@vger.kernel.org Link: https://lore.kernel.org/r/20220518224725.742882-3-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-05-23perf intel-pt: Add guest_code supportAdrian Hunter1-0/+70
A common case for KVM test programs is that the test program acts as the hypervisor, creating, running and destroying the virtual machine, and providing the guest object code from its own object code. In this case, the VM is not running an OS, but only the functions loaded into it by the hypervisor test program, and conveniently, loaded at the same virtual addresses. To support that, a new option "--guest-code" has been added in previous patches. In this patch, add support also to Intel PT. In particular, ensure guest_code thread is set up before attempting to walk object code or synthesize samples. Example: # perf record --kcore -e intel_pt/cyc/ -- tools/testing/selftests/kselftest_install/kvm/tsc_msrs_test [ perf record: Woken up 1 times to write data ] [ perf record: Captured and wrote 0.280 MB perf.data ] # perf script --guest-code --itrace=bep --ns -F-period,+addr,+flags [SNIP] tsc_msrs_test 18436 [007] 10897.962087733: branches: call ffffffffc13b2ff5 __vmx_vcpu_run+0x15 (vmlinux) => ffffffffc13b2f50 vmx_update_host_rsp+0x0 (vmlinux) tsc_msrs_test 18436 [007] 10897.962087733: branches: return ffffffffc13b2f5d vmx_update_host_rsp+0xd (vmlinux) => ffffffffc13b2ffa __vmx_vcpu_run+0x1a (vmlinux) tsc_msrs_test 18436 [007] 10897.962087733: branches: call ffffffffc13b303b __vmx_vcpu_run+0x5b (vmlinux) => ffffffffc13b2f80 vmx_vmenter+0x0 (vmlinux) tsc_msrs_test 18436 [007] 10897.962087836: branches: vmentry ffffffffc13b2f82 vmx_vmenter+0x2 (vmlinux) => 0 [unknown] ([unknown]) [guest/18436] 18436 [007] 10897.962087836: branches: vmentry 0 [unknown] ([unknown]) => 402c81 guest_code+0x131 (/home/ahunter/git/work/tools/testing/selftests/kselftest_install/kvm/tsc_msrs_test) [guest/18436] 18436 [007] 10897.962087836: branches: call 402c81 guest_code+0x131 (/home/ahunter/git/work/tools/testing/selftests/kselftest_install/kvm/tsc_msrs_test) => 40dba0 ucall+0x0 (/home/ahunter/git/work/tools/testing/selftests/kselftest_install/kvm/tsc_msrs_test) [guest/18436] 18436 [007] 10897.962088248: branches: vmexit 40dba0 ucall+0x0 (/home/ahunter/git/work/tools/testing/selftests/kselftest_install/kvm/tsc_msrs_test) => 0 [unknown] ([unknown]) tsc_msrs_test 18436 [007] 10897.962088248: branches: vmexit 0 [unknown] ([unknown]) => ffffffffc13b2fa0 vmx_vmexit+0x0 (vmlinux) tsc_msrs_test 18436 [007] 10897.962088248: branches: jmp ffffffffc13b2fa0 vmx_vmexit+0x0 (vmlinux) => ffffffffc13b2fd2 vmx_vmexit+0x32 (vmlinux) tsc_msrs_test 18436 [007] 10897.962088256: branches: return ffffffffc13b2fd2 vmx_vmexit+0x32 (vmlinux) => ffffffffc13b3040 __vmx_vcpu_run+0x60 (vmlinux) tsc_msrs_test 18436 [007] 10897.962088270: branches: return ffffffffc13b30b6 __vmx_vcpu_run+0xd6 (vmlinux) => ffffffffc13b2f2e vmx_vcpu_enter_exit+0x4e (vmlinux) [SNIP] tsc_msrs_test 18436 [007] 10897.962089321: branches: call ffffffffc13b2ff5 __vmx_vcpu_run+0x15 (vmlinux) => ffffffffc13b2f50 vmx_update_host_rsp+0x0 (vmlinux) tsc_msrs_test 18436 [007] 10897.962089321: branches: return ffffffffc13b2f5d vmx_update_host_rsp+0xd (vmlinux) => ffffffffc13b2ffa __vmx_vcpu_run+0x1a (vmlinux) tsc_msrs_test 18436 [007] 10897.962089321: branches: call ffffffffc13b303b __vmx_vcpu_run+0x5b (vmlinux) => ffffffffc13b2f80 vmx_vmenter+0x0 (vmlinux) tsc_msrs_test 18436 [007] 10897.962089424: branches: vmentry ffffffffc13b2f82 vmx_vmenter+0x2 (vmlinux) => 0 [unknown] ([unknown]) [guest/18436] 18436 [007] 10897.962089424: branches: vmentry 0 [unknown] ([unknown]) => 40dba0 ucall+0x0 (/home/ahunter/git/work/tools/testing/selftests/kselftest_install/kvm/tsc_msrs_test) [guest/18436] 18436 [007] 10897.962089701: branches: jmp 40dc1b ucall+0x7b (/home/ahunter/git/work/tools/testing/selftests/kselftest_install/kvm/tsc_msrs_test) => 40dc39 ucall+0x99 (/home/ahunter/git/work/tools/testing/selftests/kselftest_install/kvm/tsc_msrs_test) [guest/18436] 18436 [007] 10897.962089701: branches: jcc 40dc3c ucall+0x9c (/home/ahunter/git/work/tools/testing/selftests/kselftest_install/kvm/tsc_msrs_test) => 40dc20 ucall+0x80 (/home/ahunter/git/work/tools/testing/selftests/kselftest_install/kvm/tsc_msrs_test) [guest/18436] 18436 [007] 10897.962089701: branches: jcc 40dc3c ucall+0x9c (/home/ahunter/git/work/tools/testing/selftests/kselftest_install/kvm/tsc_msrs_test) => 40dc20 ucall+0x80 (/home/ahunter/git/work/tools/testing/selftests/kselftest_install/kvm/tsc_msrs_test) [guest/18436] 18436 [007] 10897.962089701: branches: jcc 40dc37 ucall+0x97 (/home/ahunter/git/work/tools/testing/selftests/kselftest_install/kvm/tsc_msrs_test) => 40dc50 ucall+0xb0 (/home/ahunter/git/work/tools/testing/selftests/kselftest_install/kvm/tsc_msrs_test) [guest/18436] 18436 [007] 10897.962089878: branches: vmexit 40dc55 ucall+0xb5 (/home/ahunter/git/work/tools/testing/selftests/kselftest_install/kvm/tsc_msrs_test) => 0 [unknown] ([unknown]) tsc_msrs_test 18436 [007] 10897.962089878: branches: vmexit 0 [unknown] ([unknown]) => ffffffffc13b2fa0 vmx_vmexit+0x0 (vmlinux) tsc_msrs_test 18436 [007] 10897.962089878: branches: jmp ffffffffc13b2fa0 vmx_vmexit+0x0 (vmlinux) => ffffffffc13b2fd2 vmx_vmexit+0x32 (vmlinux) tsc_msrs_test 18436 [007] 10897.962089887: branches: return ffffffffc13b2fd2 vmx_vmexit+0x32 (vmlinux) => ffffffffc13b3040 __vmx_vcpu_run+0x60 (vmlinux) tsc_msrs_test 18436 [007] 10897.962089901: branches: return ffffffffc13b30b6 __vmx_vcpu_run+0xd6 (vmlinux) => ffffffffc13b2f2e vmx_vcpu_enter_exit+0x4e (vmlinux) [SNIP] # perf kvm --guest-code --guest --host report -i perf.data --stdio | head -20 # To display the perf.data header info, please use --header/--header-only options. # # # Total Lost Samples: 0 # # Samples: 12 of event 'instructions' # Event count (approx.): 2274583 # # Children Self Command Shared Object Symbol # ........ ........ ............. .................... ........................................... # 54.70% 0.00% tsc_msrs_test [kernel.vmlinux] [k] entry_SYSCALL_64_after_hwframe | ---entry_SYSCALL_64_after_hwframe do_syscall_64 | |--29.44%--syscall_exit_to_user_mode | exit_to_user_mode_prepare | task_work_run | __fput For more information about Perf tools support for Intel® Processor Trace refer: https://perf.wiki.kernel.org/index.php/Perf_tools_support_for_Intel%C2%AE_Processor_Trace Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: kvm@vger.kernel.org Link: https://lore.kernel.org/r/20220517131011.6117-7-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-05-23perf kvm report: Add guest_code supportAdrian Hunter1-0/+3
Add an option to indicate that guest code can be found in the hypervisor process. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: kvm@vger.kernel.org Link: https://lore.kernel.org/r/20220517131011.6117-6-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-05-23perf script: Add guest_code supportAdrian Hunter1-0/+4
Add an option to indicate that guest code can be found in the hypervisor process. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: kvm@vger.kernel.org Link: https://lore.kernel.org/r/20220517131011.6117-5-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-05-23perf lock: Add -t/--thread option for reportNamhyung Kim1-0/+21
The -t option is to show per-thread lock stat like below: $ perf lock report -t -F acquired,contended,avg_wait Name acquired contended avg wait (ns) perf 240569 9 5784 swapper 106610 19 543 :15789 17370 2 14538 ContainerMgr 8981 6 874 sleep 5275 1 11281 ContainerThread 4416 4 944 RootPressureThr 3215 5 1215 rcu_preempt 2954 0 0 ContainerMgr 2560 0 0 unnamed 1873 0 0 EventManager_De 1845 1 636 futex-default-S 1609 0 0 ... Committer notes: Add that option to the 'perf lock report' man page. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20220521010811.932703-2-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-05-23perf c2c: Update documentation for store metric 'N/A'Leo Yan1-3/+5
The 'N/A' metric is added for store operations, update documentation to reflect changes in the report table. Signed-off-by: Leo Yan <leo.yan@linaro.org> Acked-by: Jiri Olsa <jolsa@kernel.org> Cc: Adam Li <adamli@amperemail.onmicrosoft.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Ali Saidi <alisaidi@amazon.com> Cc: Alyssa Ross <hi@alyssa.is> Cc: German Gomez <german.gomez@arm.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: James Clark <james.clark@arm.com> Cc: Joe Mario <jmario@redhat.com> Cc: Kajol Jain <kjain@linux.ibm.com> Cc: Kan Liang <kan.liang@linux.intel.com> Cc: Li Huafei <lihuafei1@huawei.com> Cc: Like Xu <likexu@tencent.com> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20220518055729.1869566-4-leo.yan@linaro.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-05-17perf intel-pt: Add support for emulated ptwriteAdrian Hunter1-0/+88
ptwrite is an Intel x86 instruction that writes arbitrary values into an Intel PT trace. It is not supported on all hardware, so provide an alternative that makes use of TNT packets to convey the payload data. TNT packets encode Taken/Not-taken conditional branch information, so taking branches based on the payload value will encode the value into the TNT packet. Refer to the changes to the documentation file perf-intel-pt.txt in this patch for an example. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Link: https://lore.kernel.org/r/20220509152400.376613-2-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-05-10perf annotate: Add --percent-limit optionNamhyung Kim1-0/+5
Like in 'perf report' and 'perf top', Add this option to limit the number of functions it displays based on the overhead value in percent. This affects only stdio and stdio2 output modes. Without this, it shows very long disassembly lines for every function in the data file. If users don't want this behavior, they can set a value in percent to suppress that. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: http://lore.kernel.org/lkml/20220502232015.697243-1-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-04-26perf intel-pt: Add link to the perf wiki's Intel PT pageAdrian Hunter1-0/+7
Add an EXAMPLE section and link to the perf wiki's Intel PT page. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Jiri Olsa <jolsa@kernel.org> Link: http://lore.kernel.org/lkml/20220426133213.248475-1-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-04-22perf stat: Merge event counts from all hybrid PMUsZhengjun Xing1-0/+10
For hybrid events, by default stat aggregates and reports the event counts per pmu. # ./perf stat -e cycles -a sleep 1 Performance counter stats for 'system wide': 14,066,877,268 cpu_core/cycles/ 6,814,443,147 cpu_atom/cycles/ 1.002760625 seconds time elapsed Sometimes, it's also useful to aggregate event counts from all PMUs. Create a new option '--hybrid-merge' to enable that behavior and report the counts without PMUs. # ./perf stat -e cycles -a --hybrid-merge sleep 1 Performance counter stats for 'system wide': 20,732,982,512 cycles 1.002776793 seconds time elapsed Reviewed-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Xing Zhengjun <zhengjun.xing@linux.intel.com> Cc: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20220422065635.767648-2-zhengjun.xing@linux.intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-04-14perf docs: Add man page entry for Arm SPEJames Clark2-1/+219
The SPE integration in Perf has quite a few usability quirks that can't be found by just reading the reference manual. So document this and at the same time add a summary of the feature that is also hard to find elsewhere. Reviewed-by: Leo Yan <leo.yan@linaro.org> Signed-off-by: James Clark <james.clark@arm.com> Co-authored-by: Al Grant <al.grant@arm.com> Co-authored-by: Luke Dare <Luke.Dare@arm.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: German Gomez <german.gomez@arm.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Leo Yan <leo.yan@linaro.org> Cc: Mark Rutland <mark.rutland@arm.com> Cc: Namhyung Kim <namhyung@kernel.org> Link: https://lore.kernel.org/r/20220413084021.2556142-1-james.clark@arm.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-04-09perf docs: Add perf-iostat link to manpagesMichael Petlan1-1/+1
Signed-off-by: Michael Petlan <mpetlan@redhat.com> Acked-by: Ian Rogers <irogers@google.com> Cc: Jiri Olsa <jolsa@kernel.org> Link: https://lore.kernel.org/r/20220404221541.30312-1-mpetlan@redhat.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-03-25perf lock: Add -F/--field option to control outputNamhyung Kim1-0/+6
The -F/--field option is to customize the list of fields to output: $ perf lock report -F contended,wait_max -k avg_wait Name contended max wait (ns) avg wait (ns) slock-AF_INET6 1 23543 23543 &lruvec->lru_lock 5 18317 11254 slock-AF_INET6 1 10379 10379 rcu_node_1 1 2104 2104 &dentry->d_lockr... 1 1844 1844 &dentry->d_lockr... 1 1672 1672 &newf->file_lock 15 2279 1025 &dentry->d_lockr... 1 792 792 Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Link: https://lore.kernel.org/r/20220323230259.288494-3-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-03-22perf script: Add 'brstackinsnlen' for branch stacksKan Liang1-2/+6
When analyzing with 'perf script', it's useful to understand the captured instruction and the next sequential instruction. To calculate the address of the next sequential instruction, the length of the captured instruction is required. For example, you can’t know the next sequential instruction after an unconditional branch unless you calculate that based on its length. For branch stacks, 'perf script' only prints the instruction bytes with 'brstackinsn', but lacks the instruction length. Add 'brstackinsnlen' to print the instruction length. $ perf script -F ip,brstackinsn,brstackinsnlen --xed 7fa555be8f75 _start: 00007fa555be8090 mov %rsp, %rdi ilen: 3 00007fa555be8093 callq 0x7fa555be8ea0 ilen: 5 # PRED 102 cycles [102] 0.02 IPC _dl_start+38: 00007fa555be8ec6 movq %rdx,0x227853(%rip) ilen: 7 00007fa555be8ecd leaq 0x227f94(%rip),%rdx ilen: 7 Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Cc: Ahmad Yasin <ahmad.yasin@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Ingo Molnar <mingo@redhat.com> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Namhyung Kim <namhyung@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Xing Zhengjun <zhengjun.xing@linux.intel.com> Link: https://lore.kernel.org/r/1647871212-184070-1-git-send-email-kan.liang@linux.intel.com [ Added the new field to tools/perf/Documentation/perf-script.txt ] Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-03-22perf ftrace latency: Update documentationNamhyung Kim1-23/+52
Add description of 'perf ftrace latency' subcommand. Signed-off-by: Namhyung Kim <namhyung@kernel.org> Cc: Andi Kleen <ak@linux.intel.com> Cc: Changbin Du <changbin.du@gmail.com> Cc: Ian Rogers <irogers@google.com> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jiri Olsa <jolsa@kernel.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: https://lore.kernel.org/r/20220321234609.90455-2-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-02-15perf intel-pt: Add documentation for Event Trace and TNT disableAdrian Hunter1-2/+102
Add documentation for Event Trace and TNT disable to the perf Intel PT man page. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: https://lore.kernel.org/r/20220124084201.2699795-26-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-02-15perf script: Display new D (Intr Disabled) and t (Intr Toggle) flagsAdrian Hunter1-5/+8
Amend the display to include D and t flags in the same way as the x flag. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: https://lore.kernel.org/r/20220124084201.2699795-21-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2022-02-15perf auxtrace: Add itrace option "I"Adrian Hunter1-0/+2
Add itrace option "I" to synthesize interrupt or similar (asynchronous) events. This will be used for Intel PT Event Trace events. Signed-off-by: Adrian Hunter <adrian.hunter@intel.com> Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Jiri Olsa <jolsa@redhat.com> Link: https://lore.kernel.org/r/20220124084201.2699795-13-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-14 10:34:31 +0000