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* perf kwork: Remove includes not needed in kwork.hArnaldo Carvalho de Melo2022-10-311-0/+6
| | | | | | | Leave just some forward declarations for pointers, move the includes to where they are really needed. Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf kwork: Implement BPF traceYang Jihong2022-07-261-6/+68
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | '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>
* perf kwork: Implement perf kwork timehistYang Jihong2022-07-261-1/+298
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* perf kwork: Add workqueue latency supportYang Jihong2022-07-261-1/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implements workqueue latency function. Test cases: # perf kwork -k workqueue lat Kwork Name | Cpu | Avg delay | Count | Max delay | Max delay start | Max delay end | -------------------------------------------------------------------------------------------------------------------------------- (w)vmstat_update | 0001 | 5.004 ms | 1 | 5.004 ms | 44001.745646 s | 44001.750650 s | (w)vmstat_update | 0006 | 1.773 ms | 1 | 1.773 ms | 44000.830840 s | 44000.832613 s | (w)vmstat_shepherd | 0000 | 0.992 ms | 8 | 2.474 ms | 44007.717845 s | 44007.720318 s | (w)vmstat_update | 0000 | 0.974 ms | 5 | 2.624 ms | 44004.785970 s | 44004.788594 s | (w)e1000_watchdog | 0002 | 0.687 ms | 5 | 2.632 ms | 44005.009334 s | 44005.011966 s | (w)vmstat_update | 0002 | 0.307 ms | 1 | 0.307 ms | 44004.817395 s | 44004.817702 s | (w)vmstat_update | 0004 | 0.296 ms | 1 | 0.296 ms | 43997.913677 s | 43997.913973 s | (w)mix_interrupt_randomness | 0000 | 0.283 ms | 285 | 3.724 ms | 44006.790889 s | 44006.794613 s | (w)neigh_managed_work | 0001 | 0.271 ms | 1 | 0.271 ms | 43997.665542 s | 43997.665813 s | (w)vmstat_update | 0005 | 0.261 ms | 1 | 0.261 ms | 44007.820542 s | 44007.820803 s | (w)neigh_managed_work | 0004 | 0.220 ms | 1 | 0.220 ms | 44002.953287 s | 44002.953507 s | (w)neigh_periodic_work | 0004 | 0.217 ms | 1 | 0.217 ms | 43999.929718 s | 43999.929935 s | (w)mix_interrupt_randomness | 0002 | 0.199 ms | 5 | 0.310 ms | 44005.012316 s | 44005.012625 s | (w)vmstat_update | 0003 | 0.199 ms | 4 | 0.307 ms | 44005.714391 s | 44005.714699 s | (w)gc_worker | 0001 | 0.071 ms | 173 | 1.128 ms | 44002.062579 s | 44002.063707 s | -------------------------------------------------------------------------------------------------------------------------------- INFO: 0.020% skipped events (17 including 10 raise, 7 entry, 0 exit) 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/20220709015033.38326-13-yangjihong1@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf kwork: Add softirq latency supportYang Jihong2022-07-261-1/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implements softirq latency function. Test cases: # perf kwork -k softirq lat Kwork Name | Cpu | Avg delay | Count | Max delay | Max delay start | Max delay end | -------------------------------------------------------------------------------------------------------------------------------- (s)TIMER:1 | 0006 | 1.048 ms | 1 | 1.048 ms | 44000.829759 s | 44000.830807 s | (s)TIMER:1 | 0001 | 1.008 ms | 4 | 3.434 ms | 43997.662069 s | 43997.665503 s | (s)RCU:9 | 0006 | 0.675 ms | 7 | 1.328 ms | 43997.670304 s | 43997.671632 s | (s)RCU:9 | 0000 | 0.414 ms | 701 | 3.996 ms | 43997.661170 s | 43997.665167 s | (s)RCU:9 | 0005 | 0.245 ms | 88 | 1.866 ms | 43997.683105 s | 43997.684971 s | (s)SCHED:7 | 0000 | 0.158 ms | 677 | 2.639 ms | 44004.785716 s | 44004.788355 s | ... <SNIP> ... (s)RCU:9 | 0002 | 0.141 ms | 932 | 1.662 ms | 44005.010206 s | 44005.011868 s | (s)RCU:9 | 0003 | 0.129 ms | 2193 | 1.507 ms | 44006.010208 s | 44006.011715 s | (s)TIMER:1 | 0005 | 0.128 ms | 1 | 0.128 ms | 44007.820346 s | 44007.820474 s | (s)SCHED:7 | 0002 | 0.040 ms | 1731 | 0.211 ms | 44005.009237 s | 44005.009447 s | -------------------------------------------------------------------------------------------------------------------------------- # perf kwork -k softirq lat -C 1,2 Kwork Name | Cpu | Avg delay | Count | Max delay | Max delay start | Max delay end | -------------------------------------------------------------------------------------------------------------------------------- (s)TIMER:1 | 0001 | 1.008 ms | 4 | 3.434 ms | 43997.662069 s | 43997.665503 s | (s)RCU:9 | 0001 | 0.216 ms | 1619 | 3.659 ms | 43997.662069 s | 43997.665727 s | (s)RCU:9 | 0002 | 0.141 ms | 932 | 1.662 ms | 44005.010206 s | 44005.011868 s | (s)NET_RX:3 | 0002 | 0.106 ms | 5 | 0.163 ms | 44005.012255 s | 44005.012418 s | (s)TIMER:1 | 0002 | 0.084 ms | 9 | 0.114 ms | 44005.009168 s | 44005.009282 s | (s)SCHED:7 | 0001 | 0.049 ms | 655 | 0.837 ms | 44005.707998 s | 44005.708835 s | (s)SCHED:7 | 0002 | 0.040 ms | 1731 | 0.211 ms | 44005.009237 s | 44005.009447 s | -------------------------------------------------------------------------------------------------------------------------------- # perf kwork -k softirq lat -n RCU Kwork Name | Cpu | Avg delay | Count | Max delay | Max delay start | Max delay end | -------------------------------------------------------------------------------------------------------------------------------- (s)RCU:9 | 0006 | 0.675 ms | 7 | 1.328 ms | 43997.670304 s | 43997.671632 s | (s)RCU:9 | 0000 | 0.414 ms | 701 | 3.996 ms | 43997.661170 s | 43997.665167 s | (s)RCU:9 | 0005 | 0.245 ms | 88 | 1.866 ms | 43997.683105 s | 43997.684971 s | (s)RCU:9 | 0004 | 0.237 ms | 26 | 0.792 ms | 43997.683018 s | 43997.683810 s | (s)RCU:9 | 0007 | 0.217 ms | 140 | 1.335 ms | 43997.671080 s | 43997.672415 s | (s)RCU:9 | 0001 | 0.216 ms | 1619 | 3.659 ms | 43997.662069 s | 43997.665727 s | (s)RCU:9 | 0002 | 0.141 ms | 932 | 1.662 ms | 44005.010206 s | 44005.011868 s | (s)RCU:9 | 0003 | 0.129 ms | 2193 | 1.507 ms | 44006.010208 s | 44006.011715 s | -------------------------------------------------------------------------------------------------------------------------------- # perf kwork -k softirq lat -s count,avg -n RCU Kwork Name | Cpu | Avg delay | Count | Max delay | Max delay start | Max delay end | -------------------------------------------------------------------------------------------------------------------------------- (s)RCU:9 | 0003 | 0.129 ms | 2193 | 1.507 ms | 44006.010208 s | 44006.011715 s | (s)RCU:9 | 0001 | 0.216 ms | 1619 | 3.659 ms | 43997.662069 s | 43997.665727 s | (s)RCU:9 | 0002 | 0.141 ms | 932 | 1.662 ms | 44005.010206 s | 44005.011868 s | (s)RCU:9 | 0000 | 0.414 ms | 701 | 3.996 ms | 43997.661170 s | 43997.665167 s | (s)RCU:9 | 0007 | 0.217 ms | 140 | 1.335 ms | 43997.671080 s | 43997.672415 s | (s)RCU:9 | 0005 | 0.245 ms | 88 | 1.866 ms | 43997.683105 s | 43997.684971 s | (s)RCU:9 | 0004 | 0.237 ms | 26 | 0.792 ms | 43997.683018 s | 43997.683810 s | (s)RCU:9 | 0006 | 0.675 ms | 7 | 1.328 ms | 43997.670304 s | 43997.671632 s | -------------------------------------------------------------------------------------------------------------------------------- # perf kwork -k softirq lat --time 43997, Kwork Name | Cpu | Avg delay | Count | Max delay | Max delay start | Max delay end | -------------------------------------------------------------------------------------------------------------------------------- (s)TIMER:1 | 0006 | 1.048 ms | 1 | 1.048 ms | 44000.829759 s | 44000.830807 s | (s)TIMER:1 | 0001 | 1.008 ms | 4 | 3.434 ms | 43997.662069 s | 43997.665503 s | (s)RCU:9 | 0006 | 0.675 ms | 7 | 1.328 ms | 43997.670304 s | 43997.671632 s | (s)RCU:9 | 0000 | 0.414 ms | 701 | 3.996 ms | 43997.661170 s | 43997.665167 s | (s)TIMER:1 | 0004 | 0.083 ms | 21 | 0.127 ms | 44004.969171 s | 44004.969298 s | ... <SNIP> ... (s)SCHED:7 | 0005 | 0.050 ms | 4 | 0.086 ms | 43997.684852 s | 43997.684938 s | (s)SCHED:7 | 0001 | 0.049 ms | 655 | 0.837 ms | 44005.707998 s | 44005.708835 s | (s)SCHED:7 | 0007 | 0.044 ms | 171 | 0.077 ms | 43997.943265 s | 43997.943342 s | (s)SCHED:7 | 0002 | 0.040 ms | 1731 | 0.211 ms | 44005.009237 s | 44005.009447 s | -------------------------------------------------------------------------------------------------------------------------------- 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/20220709015033.38326-12-yangjihong1@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf kwork: Implement perf kwork latencyYang Jihong2022-07-261-1/+162
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* perf kwork: Add workqueue report supportYang Jihong2022-07-261-2/+72
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implements workqueue report function. Test cases: # perf kwork -k workqueue rep Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end | -------------------------------------------------------------------------------------------------------------------------------- (w)gc_worker | 0001 | 1912.389 ms | 173 | 12.896 ms | 44002.050787 s | 44002.063683 s | (w)mix_interrupt_randomness | 0000 | 24.308 ms | 285 | 3.349 ms | 44004.784908 s | 44004.788257 s | (w)e1000_watchdog | 0002 | 5.332 ms | 5 | 2.059 ms | 44000.914366 s | 44000.916424 s | (w)vmstat_update | 0005 | 0.989 ms | 2 | 0.953 ms | 43997.986991 s | 43997.987944 s | (w)vmstat_shepherd | 0000 | 0.964 ms | 8 | 0.195 ms | 43997.986453 s | 43997.986648 s | (w)vmstat_update | 0003 | 0.306 ms | 6 | 0.077 ms | 44004.689543 s | 44004.689620 s | (w)vmstat_update | 0000 | 0.196 ms | 5 | 0.049 ms | 44005.713732 s | 44005.713781 s | (w)vmstat_update | 0001 | 0.162 ms | 2 | 0.130 ms | 44000.192034 s | 44000.192164 s | (w)mix_interrupt_randomness | 0002 | 0.114 ms | 5 | 0.037 ms | 44005.012625 s | 44005.012662 s | (w)vmstat_update | 0002 | 0.084 ms | 2 | 0.043 ms | 44004.817702 s | 44004.817745 s | (w)vmstat_update | 0006 | 0.067 ms | 2 | 0.041 ms | 43997.987214 s | 43997.987254 s | (w)neigh_periodic_work | 0004 | 0.039 ms | 1 | 0.039 ms | 43999.929935 s | 43999.929974 s | (w)vmstat_update | 0007 | 0.037 ms | 1 | 0.037 ms | 43997.988969 s | 43997.989006 s | (w)neigh_managed_work | 0001 | 0.036 ms | 1 | 0.036 ms | 43997.665813 s | 43997.665849 s | (w)neigh_managed_work | 0004 | 0.036 ms | 1 | 0.036 ms | 44002.953507 s | 44002.953543 s | (w)vmstat_update | 0004 | 0.027 ms | 1 | 0.027 ms | 43997.913973 s | 43997.914000 s | -------------------------------------------------------------------------------------------------------------------------------- # perf kwork -k workqueue rep -S Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end | -------------------------------------------------------------------------------------------------------------------------------- (w)gc_worker | 0001 | 1912.389 ms | 173 | 12.896 ms | 44002.050787 s | 44002.063683 s | (w)mix_interrupt_randomness | 0000 | 24.308 ms | 285 | 3.349 ms | 44004.784908 s | 44004.788257 s | (w)e1000_watchdog | 0002 | 5.332 ms | 5 | 2.059 ms | 44000.914366 s | 44000.916424 s | (w)vmstat_update | 0005 | 0.989 ms | 2 | 0.953 ms | 43997.986991 s | 43997.987944 s | (w)vmstat_shepherd | 0000 | 0.964 ms | 8 | 0.195 ms | 43997.986453 s | 43997.986648 s | (w)vmstat_update | 0003 | 0.306 ms | 6 | 0.077 ms | 44004.689543 s | 44004.689620 s | (w)vmstat_update | 0000 | 0.196 ms | 5 | 0.049 ms | 44005.713732 s | 44005.713781 s | (w)vmstat_update | 0001 | 0.162 ms | 2 | 0.130 ms | 44000.192034 s | 44000.192164 s | (w)mix_interrupt_randomness | 0002 | 0.114 ms | 5 | 0.037 ms | 44005.012625 s | 44005.012662 s | (w)vmstat_update | 0002 | 0.084 ms | 2 | 0.043 ms | 44004.817702 s | 44004.817745 s | (w)vmstat_update | 0006 | 0.067 ms | 2 | 0.041 ms | 43997.987214 s | 43997.987254 s | (w)neigh_periodic_work | 0004 | 0.039 ms | 1 | 0.039 ms | 43999.929935 s | 43999.929974 s | (w)vmstat_update | 0007 | 0.037 ms | 1 | 0.037 ms | 43997.988969 s | 43997.989006 s | (w)neigh_managed_work | 0001 | 0.036 ms | 1 | 0.036 ms | 43997.665813 s | 43997.665849 s | (w)neigh_managed_work | 0004 | 0.036 ms | 1 | 0.036 ms | 44002.953507 s | 44002.953543 s | (w)vmstat_update | 0004 | 0.027 ms | 1 | 0.027 ms | 43997.913973 s | 43997.914000 s | -------------------------------------------------------------------------------------------------------------------------------- Total count : 500 Total runtime (msec) : 1945.085 (0.192% load average) Total time span (msec) : 10155.026 -------------------------------------------------------------------------------------------------------------------------------- # perf kwork -k workqueue rep -n vmstat_update Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end | -------------------------------------------------------------------------------------------------------------------------------- (w)vmstat_update | 0005 | 0.989 ms | 2 | 0.953 ms | 43997.986991 s | 43997.987944 s | (w)vmstat_update | 0003 | 0.306 ms | 6 | 0.077 ms | 44004.689543 s | 44004.689620 s | (w)vmstat_update | 0000 | 0.196 ms | 5 | 0.049 ms | 44005.713732 s | 44005.713781 s | (w)vmstat_update | 0001 | 0.162 ms | 2 | 0.130 ms | 44000.192034 s | 44000.192164 s | (w)vmstat_update | 0002 | 0.084 ms | 2 | 0.043 ms | 44004.817702 s | 44004.817745 s | (w)vmstat_update | 0006 | 0.067 ms | 2 | 0.041 ms | 43997.987214 s | 43997.987254 s | (w)vmstat_update | 0007 | 0.037 ms | 1 | 0.037 ms | 43997.988969 s | 43997.989006 s | (w)vmstat_update | 0004 | 0.027 ms | 1 | 0.027 ms | 43997.913973 s | 43997.914000 s | -------------------------------------------------------------------------------------------------------------------------------- Committer testing: # perf kwork -k workqueue rep -C 1 | head -20 Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end | -------------------------------------------------------------------------------------------------------------------------------- (w)commit_work | 0001 | 25.896 ms | 2 | 13.200 ms | 26522.906700 s | 26522.919900 s | (w)commit_work | 0001 | 13.316 ms | 1 | 13.316 ms | 26522.573246 s | 26522.586562 s | (w)commit_work | 0001 | 13.177 ms | 1 | 13.177 ms | 26522.673406 s | 26522.686583 s | (w)commit_work | 0001 | 12.630 ms | 1 | 12.630 ms | 26522.123921 s | 26522.136551 s | (w)btrfs_work_helper | 0001 | 3.544 ms | 1 | 3.544 ms | 26529.131296 s | 26529.134840 s | (w)btrfs_work_helper | 0001 | 3.330 ms | 1 | 3.330 ms | 26529.137698 s | 26529.141028 s | (w)btrfs_work_helper | 0001 | 2.855 ms | 1 | 2.855 ms | 26529.134842 s | 26529.137697 s | (w)btrfs_work_helper | 0001 | 2.757 ms | 1 | 2.757 ms | 26529.124086 s | 26529.126843 s | (w)btrfs_work_helper | 0001 | 2.182 ms | 1 | 2.182 ms | 26529.141030 s | 26529.143212 s | (w)btrfs_work_helper | 0001 | 1.743 ms | 1 | 1.743 ms | 26520.415335 s | 26520.417078 s | (w)btrfs_work_helper | 0001 | 1.499 ms | 1 | 1.499 ms | 26529.127774 s | 26529.129272 s | (w)btrfs_work_helper | 0001 | 1.446 ms | 1 | 1.446 ms | 26529.129848 s | 26529.131294 s | (w)btrfs_work_helper | 0001 | 1.373 ms | 1 | 1.373 ms | 26523.808270 s | 26523.809643 s | (w)wb_workfn | 0001 | 1.165 ms | 2 | 0.763 ms | 26527.071056 s | 26527.071819 s | (w)btrfs_work_helper | 0001 | 0.926 ms | 1 | 0.926 ms | 26529.126846 s | 26529.127771 s | (w)btrfs_work_helper | 0001 | 0.571 ms | 1 | 0.571 ms | 26529.129275 s | 26529.129846 s | (w)wb_workfn | 0001 | 0.525 ms | 1 | 0.525 ms | 26522.975151 s | 26522.975676 s | # 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/20220709015033.38326-10-yangjihong1@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf kwork: Add softirq report supportYang Jihong2022-07-261-2/+96
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implements softirq kwork report function. Test cases: # perf kwork -k softirq rep Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end | -------------------------------------------------------------------------------------------------------------------------------- (s)TIMER:1 | 0003 | 181.387 ms | 2476 | 1.240 ms | 44004.787960 s | 44004.789201 s | (s)RCU:9 | 0003 | 91.573 ms | 2193 | 0.650 ms | 44004.790258 s | 44004.790908 s | (s)RCU:9 | 0001 | 78.960 ms | 1619 | 1.195 ms | 44001.496553 s | 44001.497749 s | (s)SCHED:7 | 0003 | 55.962 ms | 1255 | 0.954 ms | 44004.812008 s | 44004.812962 s | ... <SNIP> ... (s)RCU:9 | 0004 | 0.830 ms | 26 | 0.058 ms | 43997.666418 s | 43997.666476 s | (s)TIMER:1 | 0001 | 0.471 ms | 4 | 0.158 ms | 44007.834694 s | 44007.834852 s | (s)RCU:9 | 0006 | 0.220 ms | 7 | 0.048 ms | 44004.833764 s | 44004.833812 s | (s)NET_RX:3 | 0002 | 0.164 ms | 5 | 0.049 ms | 44005.012418 s | 44005.012466 s | (s)TIMER:1 | 0005 | 0.164 ms | 1 | 0.164 ms | 44007.820474 s | 44007.820638 s | (s)TIMER:1 | 0006 | 0.087 ms | 1 | 0.087 ms | 44000.830807 s | 44000.830894 s | (s)SCHED:7 | 0006 | 0.080 ms | 2 | 0.044 ms | 43997.826145 s | 43997.826189 s | -------------------------------------------------------------------------------------------------------------------------------- # # perf kwork -k softirq rep -S Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end | -------------------------------------------------------------------------------------------------------------------------------- (s)TIMER:1 | 0003 | 181.387 ms | 2476 | 1.240 ms | 44004.787960 s | 44004.789201 s | (s)RCU:9 | 0003 | 91.573 ms | 2193 | 0.650 ms | 44004.790258 s | 44004.790908 s | (s)RCU:9 | 0001 | 78.960 ms | 1619 | 1.195 ms | 44001.496553 s | 44001.497749 s | (s)SCHED:7 | 0000 | 63.631 ms | 680 | 2.690 ms | 44006.721976 s | 44006.724666 s | ... <SNIP> ... (s)SCHED:7 | 0003 | 55.962 ms | 1255 | 0.954 ms | 44004.812008 s | 44004.812962 s | (s)RCU:9 | 0006 | 0.220 ms | 7 | 0.048 ms | 44004.833764 s | 44004.833812 s | (s)NET_RX:3 | 0002 | 0.164 ms | 5 | 0.049 ms | 44005.012418 s | 44005.012466 s | (s)TIMER:1 | 0005 | 0.164 ms | 1 | 0.164 ms | 44007.820474 s | 44007.820638 s | (s)TIMER:1 | 0006 | 0.087 ms | 1 | 0.087 ms | 44000.830807 s | 44000.830894 s | (s)SCHED:7 | 0006 | 0.080 ms | 2 | 0.044 ms | 43997.826145 s | 43997.826189 s | -------------------------------------------------------------------------------------------------------------------------------- Total count : 12748 Total runtime (msec) : 661.433 (0.065% load average) Total time span (msec) : 10176.441 -------------------------------------------------------------------------------------------------------------------------------- # # perf kwork -k softirq rep -s count,max Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end | -------------------------------------------------------------------------------------------------------------------------------- (s)TIMER:1 | 0003 | 181.387 ms | 2476 | 1.240 ms | 44004.787960 s | 44004.789201 s | (s)RCU:9 | 0003 | 91.573 ms | 2193 | 0.650 ms | 44004.790258 s | 44004.790908 s | (s)SCHED:7 | 0002 | 50.039 ms | 1731 | 0.074 ms | 44005.009447 s | 44005.009521 s | (s)RCU:9 | 0001 | 78.960 ms | 1619 | 1.195 ms | 44001.496553 s | 44001.497749 s | (s)SCHED:7 | 0003 | 55.962 ms | 1255 | 0.954 ms | 44004.812008 s | 44004.812962 s | ... <SNIP> ... (s)RCU:9 | 0002 | 35.241 ms | 932 | 0.407 ms | 44005.009541 s | 44005.009949 s | (s)RCU:9 | 0000 | 45.710 ms | 702 | 1.144 ms | 44004.787023 s | 44004.788167 s | (s)SCHED:7 | 0006 | 0.080 ms | 2 | 0.044 ms | 43997.826145 s | 43997.826189 s | (s)TIMER:1 | 0005 | 0.164 ms | 1 | 0.164 ms | 44007.820474 s | 44007.820638 s | (s)TIMER:1 | 0006 | 0.087 ms | 1 | 0.087 ms | 44000.830807 s | 44000.830894 s | -------------------------------------------------------------------------------------------------------------------------------- Committer testing: # perf kwork -k softirq report -C 2 -s count,max Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end | -------------------------------------------------------------------------------------------------------------------------------- (s)SCHED:7 | 0002 | 0.980 ms | 159 | 0.024 ms | 26035.571037 s | 26035.571061 s | (s)RCU:9 | 0002 | 0.124 ms | 88 | 0.021 ms | 26035.177050 s | 26035.177071 s | (s)TIMER:1 | 0002 | 0.122 ms | 56 | 0.007 ms | 26035.468045 s | 26035.468052 s | -------------------------------------------------------------------------------------------------------------------------------- # 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/20220709015033.38326-9-yangjihong1@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf kwork: Add irq report supportYang Jihong2022-07-261-2/+61
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Implements irq kwork report function. Test cases: # perf kwork record -- sleep 10 [ perf record: Woken up 0 times to write data ] [ perf record: Captured and wrote 6.134 MB perf.data ] # perf kwork report Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end | -------------------------------------------------------------------------------------------------------------------------------- virtio0-requests:25 | 0000 | 1167.501 ms | 18284 | 1.096 ms | 44004.464905 s | 44004.466001 s | eth0:10 | 0002 | 0.185 ms | 5 | 0.058 ms | 44005.012222 s | 44005.012280 s | -------------------------------------------------------------------------------------------------------------------------------- # perf kwork report -C 2 Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end | -------------------------------------------------------------------------------------------------------------------------------- eth0:10 | 0002 | 0.185 ms | 5 | 0.058 ms | 44005.012222 s | 44005.012280 s | -------------------------------------------------------------------------------------------------------------------------------- # perf kwork report -C 3 Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end | -------------------------------------------------------------------------------------------------------------------------------- -------------------------------------------------------------------------------------------------------------------------------- # perf kwork report -i perf.data Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end | -------------------------------------------------------------------------------------------------------------------------------- virtio0-requests:25 | 0000 | 1167.501 ms | 18284 | 1.096 ms | 44004.464905 s | 44004.466001 s | eth0:10 | 0002 | 0.185 ms | 5 | 0.058 ms | 44005.012222 s | 44005.012280 s | -------------------------------------------------------------------------------------------------------------------------------- # perf kwork report -s max,freq Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end | -------------------------------------------------------------------------------------------------------------------------------- virtio0-requests:25 | 0000 | 1167.501 ms | 18284 | 1.096 ms | 44004.464905 s | 44004.466001 s | eth0:10 | 0002 | 0.185 ms | 5 | 0.058 ms | 44005.012222 s | 44005.012280 s | -------------------------------------------------------------------------------------------------------------------------------- # perf kwork report -S Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end | -------------------------------------------------------------------------------------------------------------------------------- virtio0-requests:25 | 0000 | 1167.501 ms | 18284 | 1.096 ms | 44004.464905 s | 44004.466001 s | eth0:10 | 0002 | 0.185 ms | 5 | 0.058 ms | 44005.012222 s | 44005.012280 s | -------------------------------------------------------------------------------------------------------------------------------- Total count : 18289 Total runtime (msec) : 1167.686 (0.115% load average) Total time span (msec) : 10159.155 -------------------------------------------------------------------------------------------------------------------------------- # perf kwork report --time 44005, Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end | -------------------------------------------------------------------------------------------------------------------------------- virtio0-requests:25 | 0000 | 402.173 ms | 4695 | 0.981 ms | 44007.831992 s | 44007.832973 s | eth0:10 | 0002 | 0.089 ms | 2 | 0.058 ms | 44005.012222 s | 44005.012280 s | -------------------------------------------------------------------------------------------------------------------------------- Committer testing: # perf kwork report Kwork Name | Cpu | Total Runtime | Count | Max runtime | Max runtime start | Max runtime end | -------------------------------------------------------------------------------------------------------------------------------- nvme0q5:130 | 0004 | 1.101 ms | 49 | 0.051 ms | 26035.056403 s | 26035.056455 s | amdgpu:162 | 0002 | 0.176 ms | 9 | 0.046 ms | 26035.268020 s | 26035.268066 s | nvme0q24:149 | 0023 | 0.161 ms | 55 | 0.009 ms | 26035.655280 s | 26035.655288 s | nvme0q20:145 | 0019 | 0.090 ms | 33 | 0.014 ms | 26035.939018 s | 26035.939032 s | nvme0q31:156 | 0030 | 0.075 ms | 21 | 0.010 ms | 26035.052237 s | 26035.052247 s | nvme0q8:133 | 0007 | 0.062 ms | 12 | 0.021 ms | 26035.416840 s | 26035.416861 s | nvme0q6:131 | 0005 | 0.054 ms | 22 | 0.010 ms | 26035.199919 s | 26035.199929 s | nvme0q19:144 | 0018 | 0.052 ms | 14 | 0.010 ms | 26035.110615 s | 26035.110625 s | nvme0q7:132 | 0006 | 0.049 ms | 13 | 0.007 ms | 26035.125180 s | 26035.125187 s | nvme0q18:143 | 0017 | 0.033 ms | 14 | 0.007 ms | 26035.169698 s | 26035.169705 s | nvme0q17:142 | 0016 | 0.013 ms | 1 | 0.013 ms | 26035.565147 s | 26035.565160 s | enp5s0-rx-0:164 | 0006 | 0.004 ms | 4 | 0.002 ms | 26035.928882 s | 26035.928884 s | enp5s0-tx-0:166 | 0008 | 0.003 ms | 3 | 0.002 ms | 26035.870923 s | 26035.870925 s | -------------------------------------------------------------------------------------------------------------------------------- # 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/20220709015033.38326-8-yangjihong1@huawei.com Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
* perf kwork: Implement 'report' subcommandYang Jihong2022-07-261-2/+860
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* perf kwork: Add workqueue kwork record supportYang Jihong2022-07-261-1/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* perf kwork: Add softirq kwork record supportYang Jihong2022-07-261-1/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* perf kwork: Add irq kwork record supportYang Jihong2022-07-261-1/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* perf kwork: New tool to trace time properties of kernel work (such as ↵Yang Jihong2022-07-261-0/+162
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>
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