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Yang Jihong 94348520c6 perf kwork: Add irq report support 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>		History 2022-07-26 16:31:54 -03:00
arch	- Improve the check whether the kernel supports WP mappings so that it	2022-07-17 08:27:30 -07:00
block	block: fix missing blkcg_bio_issue_init	2022-07-14 10:54:49 -06:00
certs	Certs changes	2022-06-21 12:13:53 -05:00
crypto	crypto: s390 - do not depend on CRYPTO_HW for SIMD implementations	2022-07-06 20:04:06 -07:00
Documentation	RISC-V:	2022-07-15 10:31:46 -07:00
drivers	Second v5.19 rc pull request	2022-07-18 17:16:22 -07:00
fs	for-5.19-rc7-tag	2022-07-16 13:48:55 -07:00
include	Input updates for v5.19-rc6	2022-07-17 07:52:46 -07:00
init	gcc-12: disable '-Warray-bounds' universally for now	2022-06-09 10:11:12 -07:00
ipc	ipc: Free mq_sysctls if ipc namespace creation failed	2022-06-22 17:47:41 -05:00
kernel	watchqueue: make sure to serialize 'wqueue->defunct' properly	2022-07-20 10:46:07 -07:00
lib	ubsan: disable UBSAN_DIV_ZERO for clang	2022-07-14 15:45:26 -07:00
LICENSES	LICENSES/LGPL-2.1: Add LGPL-2.1-or-later as valid identifiers	2021-12-16 14:33:10 +01:00
mm	mm: split huge PUD on wp_huge_pud fallback	2022-07-03 15:42:33 -07:00
net	net/tls: Check for errors in tls_device_init	2022-07-14 10:12:39 -07:00
samples	Fixes and minor clean ups for tracing:	2022-07-12 16:17:40 -07:00
scripts	Just when you thought that all the speculation bugs were addressed and	2022-07-11 18:15:25 -07:00
security	lockdown: Fix kexec lockdown bypass with ima policy	2022-07-20 09:56:48 -07:00
sound	ALSA: hda/realtek - Enable the headset-mic on a Xiaomi's laptop	2022-07-13 12:42:41 +02:00
tools	perf kwork: Add irq report support	2022-07-26 16:31:54 -03:00
usr	Not a lot of material this cycle. Many singleton patches against various	2022-05-27 11:22:03 -07:00
virt	KVM: x86: disable preemption around the call to kvm_arch_vcpu_{un\|}blocking	2022-06-09 10:52:20 -04:00
.clang-format	clang-format: Fix space after for_each macros	2022-05-20 19:27:16 +02:00
.cocciconfig	scripts: add Linux .cocciconfig for coccinelle	2016-07-22 12:13:39 +02:00
.get_maintainer.ignore	Opt out of scripts/get_maintainer.pl	2019-05-16 10:53:40 -07:00
.gitattributes	.gitattributes: use 'dts' diff driver for dts files	2019-12-04 19:44:11 -08:00
.gitignore	kbuild: split the second line of .mod into .usyms	2022-05-08 03:16:59 +09:00
.mailmap	cxl fixes for 5.19-rc6	2022-07-08 12:55:25 -07:00
COPYING	COPYING: state that all contributions really are covered by this file	2020-02-10 13:32:20 -08:00
CREDITS	MAINTAINERS: mark ARM/PALM TREO SUPPORT orphan	2022-07-07 15:17:00 +02:00
Kbuild	kbuild: rename hostprogs-y/always to hostprogs/always-y	2020-02-04 01:53:07 +09:00
Kconfig	kbuild: ensure full rebuild when the compiler is updated	2020-05-12 13:28:33 +09:00
MAINTAINERS	spi: Fixes for v5.19	2022-07-15 10:23:43 -07:00
Makefile	Linux 5.19-rc7	2022-07-17 13:30:22 -07:00
README	Drop all 00-INDEX files from Documentation/	2018-09-09 15:08:58 -06:00

README

Linux kernel
============

There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.

In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``.  The formatted documentation can also be read online at:

    https://www.kernel.org/doc/html/latest/

There are various text files in the Documentation/ subdirectory,
several of them using the Restructured Text markup notation.

Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.