Yang Jihong 5a81927a40 perf kwork: Add softirq trace BPF support ... Implements softirq trace bpf function. Test cases: Trace softirq latency without filter: # perf kwork -k softirq lat -b Starting trace, Hit <Ctrl+C> to stop and report ^C Kwork Name | Cpu | Avg delay | Count | Max delay | Max delay start | Max delay end | -------------------------------------------------------------------------------------------------------------------------------- (s)RCU:9 | 0005 | 0.281 ms | 3 | 0.338 ms | 111295.752222 s | 111295.752560 s | (s)RCU:9 | 0002 | 0.262 ms | 24 | 1.400 ms | 111301.335986 s | 111301.337386 s | (s)SCHED:7 | 0005 | 0.177 ms | 14 | 0.212 ms | 111295.752270 s | 111295.752481 s | (s)RCU:9 | 0007 | 0.161 ms | 47 | 2.022 ms | 111295.402159 s | 111295.404181 s | (s)NET_RX:3 | 0003 | 0.149 ms | 12 | 1.261 ms | 111301.192964 s | 111301.194225 s | (s)TIMER:1 | 0001 | 0.105 ms | 9 | 0.198 ms | 111301.180191 s | 111301.180389 s | ... <SNIP> ... (s)NET_RX:3 | 0002 | 0.098 ms | 6 | 0.124 ms | 111295.403760 s | 111295.403884 s | (s)SCHED:7 | 0001 | 0.093 ms | 19 | 0.242 ms | 111301.180256 s | 111301.180498 s | (s)SCHED:7 | 0007 | 0.078 ms | 15 | 0.188 ms | 111300.064226 s | 111300.064415 s | (s)SCHED:7 | 0004 | 0.077 ms | 11 | 0.213 ms | 111301.361759 s | 111301.361973 s | (s)SCHED:7 | 0000 | 0.063 ms | 33 | 0.805 ms | 111295.401811 s | 111295.402616 s | (s)SCHED:7 | 0003 | 0.063 ms | 14 | 0.085 ms | 111301.192255 s | 111301.192340 s | -------------------------------------------------------------------------------------------------------------------------------- Trace softirq latency with cpu filter: # perf kwork -k softirq lat -b -C 1 Starting trace, Hit <Ctrl+C> to stop and report ^C Kwork Name | Cpu | Avg delay | Count | Max delay | Max delay start | Max delay end | -------------------------------------------------------------------------------------------------------------------------------- (s)RCU:9 | 0001 | 0.178 ms | 5 | 0.572 ms | 111435.534135 s | 111435.534707 s | -------------------------------------------------------------------------------------------------------------------------------- Trace softirq latency with name filter: # perf kwork -k softirq lat -b -n SCHED Starting trace, Hit <Ctrl+C> to stop and report ^C Kwork Name | Cpu | Avg delay | Count | Max delay | Max delay start | Max delay end | -------------------------------------------------------------------------------------------------------------------------------- (s)SCHED:7 | 0001 | 0.295 ms | 15 | 2.183 ms | 111452.534950 s | 111452.537133 s | (s)SCHED:7 | 0002 | 0.215 ms | 10 | 0.315 ms | 111460.000238 s | 111460.000553 s | (s)SCHED:7 | 0005 | 0.190 ms | 29 | 0.338 ms | 111457.032538 s | 111457.032876 s | (s)SCHED:7 | 0003 | 0.097 ms | 10 | 0.319 ms | 111452.434351 s | 111452.434670 s | (s)SCHED:7 | 0006 | 0.089 ms | 1 | 0.089 ms | 111450.737450 s | 111450.737539 s | (s)SCHED:7 | 0007 | 0.085 ms | 17 | 0.169 ms | 111452.471333 s | 111452.471502 s | (s)SCHED:7 | 0004 | 0.071 ms | 15 | 0.221 ms | 111452.535252 s | 111452.535473 s | (s)SCHED:7 | 0000 | 0.044 ms | 32 | 0.130 ms | 111460.001982 s | 111460.002112 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/20220709015033.38326-17-yangjihong1@huawei.com [ Add {} for multiline if blocks ] 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	Kbuild updates for v5.18	2022-03-31 11:59:03 -07:00
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 trace BPF 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	Kbuild updates for v5.18	2022-03-31 11:59:03 -07:00
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	tools/virtio: compile with -pthread	2022-03-28 16:52:59 -04:00
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