Yang Jihong 19807bba5a perf kwork: Add softirq latency support ... 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>		2022-07-26 16:31:54 -03:00
..
accounting	delayacct: track delays from write-protect copy	2022-06-01 15:55:25 -07:00
arch	Merge remote-tracking branch 'torvalds/master' into perf/core	2022-07-18 10:36:11 -03:00
bootconfig
bpf	bpftool: Use sysfs vmlinux when dumping BTF by ID	2022-05-13 16:07:53 -07:00
build	perf build: Stop using __weak bpf_map_create() to handle older libbpf versions	2022-05-26 12:36:56 -03:00
certs	tools/certs: Add print-cert-tbs-hash.sh	2022-05-23 18:47:49 +03:00
cgroup
counter
debugging
edid
firewire
firmware
gpio	tools: gpio: Add new hardware clock type	2022-05-04 11:06:14 +02:00
hv
iio
include	tools lib: Add list_last_entry_or_null()	2022-07-26 16:02:13 -03:00
io_uring
kvm/kvm_stat	tools/kvm_stat: fix display of error when multiple processes are found	2022-06-15 08:14:20 -04:00
laptop
leds
lib	perf auxtrace: Add machine_pid and vcpu to auxtrace_error	2022-07-20 11:08:17 -03:00
memory-model	tools/memory-model/README: Update klitmus7 compat table	2022-05-03 10:12:48 -07:00
objtool	Just when you thought that all the speculation bugs were addressed and	2022-07-11 18:15:25 -07:00
pci
pcmcia
perf	perf kwork: Add softirq latency support	2022-07-26 16:31:54 -03:00
power	Power management updates for 5.19-rc1	2022-05-24 16:04:25 -07:00
rcu
scripts
spi
testing	selftests/net: test nexthop without gw	2022-07-14 14:41:19 +02:00
thermal	tools/thermal: remove unneeded semicolon	2022-05-19 12:11:52 +02:00
time
tracing	rtla: Remove procps-ng dependency	2022-05-26 15:20:46 -04:00
usb	testusb: Fix warning comparing pointer to 0	2022-04-26 13:32:49 +02:00
virtio
vm	mm/page-flags: reuse PG_mappedtodisk as PG_anon_exclusive for PageAnon() pages	2022-05-09 18:20:44 -07:00
wmi
Makefile	Thermal control updates for 5.19-rc1	2022-05-24 16:19:30 -07:00