catching the Chinese translation up with the front-page rework.
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Merge tag 'docs-6.1-2' of git://git.lwn.net/linux
Pull documentation fixes from Jonathan Corbet:
"A handful of relatively simple documentation fixes, plus a set of
patches catching the Chinese translation up with the front-page
rework"
* tag 'docs-6.1-2' of git://git.lwn.net/linux:
Documentation: rtla: Correct command line example
docs/zh_CN: add a man-pages link to zh_CN/index.rst
docs/zh_CN: Rewrite the Chinese translation front page
docs/zh_CN: add zh_CN/arch.rst
docs/zh_CN: promote the title of zh_CN/process/index.rst
docs/zh_CN: Update the translation of page_owner to 6.0-rc7
docs/zh_CN: Update the translation of ksm to 6.0-rc7
docs/howto: Replace abundoned URL of gmane.org
Documentation: ubifs: Fix compression idiom
Documentation/mm/page_owner.rst: delete frequently changing experimental data
docs/zh_CN: Fix build warning
docs: ftrace: Correct access mode
The '-t/-T' parameters seem to have been swapped:
-t/--trace[=file]: save the stopped trace
to [file|timerlat_trace.txt]
-T/--thread us: stop trace if the thread latency
is higher than the argument in us
Swap them back.
Signed-off-by: Pierre Gondois <pierre.gondois@arm.com>
Acked-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Link: https://lore.kernel.org/r/20221006084409.3882542-1-pierre.gondois@arm.com
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Various clean ups and fixes.
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Merge tag 'trace-tools-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing tool updates from Steven Rostedt:
- Various clean ups and fixes to rtla (Real Time Linux Analysis)
* tag 'trace-tools-v5.19' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
rtla: Remove procps-ng dependency
rtla: Fix __set_sched_attr error message
rtla: Minor grammar fix for rtla README
rtla: Don't overwrite existing directory mode
rtla: Avoid record NULL pointer dereference
rtla/Makefile: Properly handle dependencies
Linus had a problem compiling RTLA, saying:
"[...] I wish the tracing tools would do a bit more package
checking and helpful error messages too, rather than just
fail with:
fatal error: tracefs.h: No such file or directory"
Which is indeed not a helpful message. Update the Makefile, adding
proper checks for the dependencies, with useful information about
how to resolve possible problems.
For example, the previous error is now reported as:
$ make
********************************************
** NOTICE: libtracefs version 1.3 or higher not found
**
** Consider installing the latest libtracefs from your
** distribution, e.g., 'dnf install libtracefs' on Fedora,
** or from source:
**
** https://git.kernel.org/pub/scm/libs/libtrace/libtracefs.git/
**
********************************************
These messages are inspired by the ones used on trace-cmd, as suggested
by Stevel Rostedt.
Link: https://lore.kernel.org/r/CAHk-=whxmA86E=csNv76DuxX_wYsg8mW15oUs3XTabu2Yc80yw@mail.gmail.com/
Changes from V1:
- Moved the rst2man check to the install phase (when it is used).
- Removed the procps-ng lib check [1] as it is being removed.
[1] a0f9f8c1030c66305c9b921057c3d483064d5529.1651220820.git.bristot@kernel.org
Link: https://lkml.kernel.org/r/3f1fac776c37e4b67c876a94e5a0e45ed022ff3d.1651238057.git.bristot@kernel.org
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Correct lkml@vger to linux-kernel@vger.
Add linux-trace-devel since that is what is in the MAINTAINERS file.
Fixes: d40d48e1f1 ("rtla: Add Documentation")
Signed-off-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Changes to RTLA:
- Support for adjusting tracing_threashold
- Add -a (auto) option to make it easier for users to debug in the field
- Add -e option to add more events to the trace
- Add --trigger option to add triggers to events
- Add --filter option to filter events
- Add support to save histograms to the file
- Add --dma-latency to set /dev/cpu_dma_latency
- Other fixes and cleanups
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Merge tag 'trace-rtla-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull RTLA tracing tool updates from Steven Rostedt:
"Real Time Analysis Tool updatesfor 5.18:
- Support for adjusting tracing_threashold
- Add -a (auto) option to make it easier for users to debug in the field
- Add -e option to add more events to the trace
- Add --trigger option to add triggers to events
- Add --filter option to filter events
- Add support to save histograms to the file
- Add --dma-latency to set /dev/cpu_dma_latency
- Other fixes and cleanups"
* tag 'trace-rtla-v5.18' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
rtla: Tools main loop cleanup
rtla/timerlat: Add --dma-latency option
rtla/osnoise: Fix osnoise hist stop tracing message
rtla: Check for trace off also in the trace instance
rtla/trace: Save event histogram output to a file
rtla: Add --filter support
rtla/trace: Add trace event filter helpers
rtla: Add --trigger support
rtla/trace: Add trace event trigger helpers
rtla: Add -e/--event support
rtla/trace: Add trace events helpers
rtla/timerlat: Add the automatic trace option
rtla/osnoise: Add the automatic trace option
rtla/osnoise: Add an option to set the threshold
rtla/osnoise: Add support to adjust the tracing_thresh
Add the --dma-latency to set /dev/cpu_dma_latency to the
specified value, this aims to avoid having exit from idle
states latencies that could be influencing the analysis.
Link: https://lkml.kernel.org/r/72ddb0d913459f13217086dadafad88a7c46dd28.1646247211.git.bristot@kernel.org
Cc: Daniel Bristot de Oliveira <bristot@kernel.org>
Cc: Clark Williams <williams@redhat.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
The hist: trigger generates a histogram in the file sys/event/hist.
If the hist: trigger is used, automatically save the histogram output of
the event sys:event in the sys_event_hist.txt file.
Link: https://lkml.kernel.org/r/b5c906af31d4e022ffe87fb0848fac5c089087c8.1646247211.git.bristot@kernel.org
Cc: Daniel Bristot de Oliveira <bristot@kernel.org>
Cc: Clark Williams <williams@redhat.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Add --filter option. This option enables a trace event filtering of the
previous -e sys:event argument.
This option is available for all current tools.
Link: https://lkml.kernel.org/r/509d70b6348d3e5bcbf1f07ab725ce08d063149a.1646247211.git.bristot@kernel.org
Cc: Daniel Bristot de Oliveira <bristot@kernel.org>
Cc: Clark Williams <williams@redhat.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Add --trigger option. This option enables a trace event trigger to the
previous -e sys:event argument, allowing some advanced tracing options.
For instance, in a system with CPUs 2:23 isolated, it is possible to get
a stack trace of thread wakeup targeting those CPUs while running
osnoise with the following command line:
# osnoise top -c 2-23 -a 50 -e sched:sched_wakeup --trigger="stacktrace if target_cpu >= 2"
This option is available for all current tools.
Link: https://lkml.kernel.org/r/07d2983d5f71261d4da89dbaf02efcad100ab8ee.1646247211.git.bristot@kernel.org
Cc: Daniel Bristot de Oliveira <bristot@kernel.org>
Cc: Clark Williams <williams@redhat.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Add -e/--event option. This option enables an event in the trace (-t)
session. The argument can be a specific event, e.g., -e sched:sched_switch,
or all events of a system group, e.g., -e sched. Multiple -e are allowed.
It is only active when -t or -a are set.
This option is available for all current tools.
Link: https://lkml.kernel.org/r/6a3b753be9b1e811953995f7f21a86918ad13390.1646247211.git.bristot@kernel.org
Cc: Daniel Bristot de Oliveira <bristot@kernel.org>
Cc: Clark Williams <williams@redhat.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Add the -a/--auto <arg in us> option. This option sets some commonly
used options while debugging the system. It aims to help users produce
reports in the field, reducing the number of arguments passed to the
tool in the first approach to a problem.
It is equivalent to setting osnoise/stop_tracing_total_us and print_stack
with the argument, and saving the trace to timerlat_trace.txt file if the
trace is stopped automatically.
Link: https://lkml.kernel.org/r/92438f7ef132c731f538cebdf77850300afe04a5.1646247211.git.bristot@kernel.org
Cc: Daniel Bristot de Oliveira <bristot@kernel.org>
Cc: Clark Williams <williams@redhat.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Add the -a/--auto <arg in us> option. This option sets some commonly
used options while debugging the system. It aims to help users produce
reports in the field, reducing the number of arguments passed to the
tool in the first approach to a problem.
It is equivalent to setting osnoise/stop_tracing_us with the argument,
setting tracing_thresh to 1 us, and saving the trace to osnoise_trace.txt
file if the trace is stopped automatically.
Link: https://lkml.kernel.org/r/ef04c961b227eb93a83cd0b54bfca45e1a381b77.1646247211.git.bristot@kernel.org
Cc: Daniel Bristot de Oliveira <bristot@kernel.org>
Cc: Clark Williams <williams@redhat.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Add the -T/--threshold option to set the minimum threshold to be
considered a noise to osnoise top and hist commands. Also update
the man pages.
Link: https://lkml.kernel.org/r/031861200ffdb24a1df4aa72c458706889a20d5d.1646247211.git.bristot@kernel.org
Cc: Daniel Bristot de Oliveira <bristot@kernel.org>
Cc: Clark Williams <williams@redhat.com>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
- rtla (Real-Time Linux Analysis tool): fix typo in man page
- rtla: Update API -e to -E before it is released
- rlla: Error message fix and memory leak fix
- Partially uninline trace event soft disable to shrink text
- Fix function graph start up test
- Have triggers affect the trace instance they are in and not top level
- Have osnoise sleep in the units it says it uses
- Remove unused ftrace stub function
- Remove event probe redundant info from event in the buffer
- Fix group ownership setting in tracefs
- Ensure trace buffer is minimum size to prevent crashes
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Merge tag 'trace-v5.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace
Pull tracing fixes from Steven Rostedt:
- rtla (Real-Time Linux Analysis tool):
- fix typo in man page
- Update API -e to -E before it is released
- Error message fix and memory leak fix
- Partially uninline trace event soft disable to shrink text
- Fix function graph start up test
- Have triggers affect the trace instance they are in and not top level
- Have osnoise sleep in the units it says it uses
- Remove unused ftrace stub function
- Remove event probe redundant info from event in the buffer
- Fix group ownership setting in tracefs
- Ensure trace buffer is minimum size to prevent crashes
* tag 'trace-v5.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-trace:
rtla/osnoise: Fix error message when failing to enable trace instance
rtla/osnoise: Free params at the exit
rtla/hist: Make -E the short version of --entries
tracing: Fix selftest config check for function graph start up test
tracefs: Set the group ownership in apply_options() not parse_options()
tracing/osnoise: Make osnoise_main to sleep for microseconds
ftrace: Remove unused ftrace_startup_enable() stub
tracing: Ensure trace buffer is at least 4096 bytes large
tracing: Uninline trace_trigger_soft_disabled() partly
eprobes: Remove redundant event type information
tracing: Have traceon and traceoff trigger honor the instance
tracing: Dump stacktrace trigger to the corresponding instance
rtla: Fix systme -> system typo on man page
Currently, --entries uses -e as the short version in the hist mode of
timerlat and osnoise tools. But as -e is already used to enable events
on trace sessions by other tools, thus let's keep it available for the
same usage for all rtla tools.
Make -E the short version of --entries for hist mode on all tools.
Note: rtla was merged in this merge window, so rtla was not released yet.
Link: https://lkml.kernel.org/r/5dbf0cbe7364d3a05e708926b41a097c59a02b1e.1645206561.git.bristot@kernel.org
Cc: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt (Google) <rostedt@goodmis.org>
The RTLA documents were added to Documentation/ but never hooked into the
rest of the docs build, leading to a bunch of warnings like:
Documentation/tools/rtla/rtla-osnoise.rst: WARNING: document isn't included in any toctree
Add some basic glue to wire these documents into the build so that they are
available with the rest of the rendered docs. No attempt has been made to
turn the RTLA docs into proper RST files rather than warmed-over man pages;
that is an exercise for the future.
Fixes: d40d48e1f1 ("rtla: Add Documentation")
Acked-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Acked-by: Steven Rostedt (Google) <rostedt@goodmis.org>
Link: https://lore.kernel.org/r/877dau555q.fsf@meer.lwn.net
Signed-off-by: Jonathan Corbet <corbet@lwn.net>
Man page for rtla timerlat hist mode.
Link: https://lkml.kernel.org/r/4a184003fdb81e23be3fe5ec882b1c89d5a95458.1639158831.git.bristot@kernel.org
Cc: Tao Zhou <tao.zhou@linux.dev>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Tom Zanussi <zanussi@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Daniel Bristot de Oliveira <bristot@kernel.org>
Cc: linux-rt-users@vger.kernel.org
Cc: linux-trace-devel@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Man page for rtla timerlat top mode.
Link: https://lkml.kernel.org/r/58c3d6212e6c6f1f012deb2e998dd082da92075f.1639158831.git.bristot@kernel.org
Cc: Tao Zhou <tao.zhou@linux.dev>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Tom Zanussi <zanussi@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Daniel Bristot de Oliveira <bristot@kernel.org>
Cc: linux-rt-users@vger.kernel.org
Cc: linux-trace-devel@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Man page for rtla timerlat tool.
Link: https://lkml.kernel.org/r/78678b8d024bf5a3a79f831ac9441b96e8d2f56e.1639158831.git.bristot@kernel.org
Cc: Tao Zhou <tao.zhou@linux.dev>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Tom Zanussi <zanussi@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Daniel Bristot de Oliveira <bristot@kernel.org>
Cc: linux-rt-users@vger.kernel.org
Cc: linux-trace-devel@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Man page for rtla osnoise hist mode.
Link: https://lkml.kernel.org/r/d43cc5d516b8db180575c4b66c4aa67c6a724a8d.1639158831.git.bristot@kernel.org
Cc: Tao Zhou <tao.zhou@linux.dev>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Tom Zanussi <zanussi@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Daniel Bristot de Oliveira <bristot@kernel.org>
Cc: linux-rt-users@vger.kernel.org
Cc: linux-trace-devel@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Man page for rtla osnoise top mode.
Link: https://lkml.kernel.org/r/445aa2173ca152fc2e68719e3c1a2547dd01efd3.1639158831.git.bristot@kernel.org
Cc: Tao Zhou <tao.zhou@linux.dev>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Tom Zanussi <zanussi@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Daniel Bristot de Oliveira <bristot@kernel.org>
Cc: linux-rt-users@vger.kernel.org
Cc: linux-trace-devel@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Man page for rtla osnoise command.
Link: https://lkml.kernel.org/r/304747c602e46f6396e3bb75dfdcb42ae3656dca.1639158831.git.bristot@kernel.org
Cc: Tao Zhou <tao.zhou@linux.dev>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Tom Zanussi <zanussi@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Daniel Bristot de Oliveira <bristot@kernel.org>
Cc: linux-rt-users@vger.kernel.org
Cc: linux-trace-devel@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Adds the basis for rtla documentation. This patch also
includes the rtla(1) man page.
As suggested by Jonathan Corbet, we are placing these man
pages at Documentation/tools/rtla, using rst format. It
is not linked to the official documentation, though.
The Makefile is based on bpftool's Documentation one.
Link: https://lkml.kernel.org/r/5f510f3e962fc0cd531c43f5a815544dd720c3f2.1639158831.git.bristot@kernel.org
Cc: Tao Zhou <tao.zhou@linux.dev>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Tom Zanussi <zanussi@kernel.org>
Cc: Masami Hiramatsu <mhiramat@kernel.org>
Cc: Juri Lelli <juri.lelli@redhat.com>
Cc: Clark Williams <williams@redhat.com>
Cc: John Kacur <jkacur@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Cc: Daniel Bristot de Oliveira <bristot@kernel.org>
Cc: linux-rt-users@vger.kernel.org
Cc: linux-trace-devel@vger.kernel.org
Cc: linux-kernel@vger.kernel.org
Suggested-by: Steven Rostedt <rostedt@goodmis.org>
Suggested-by: Jonathan Corbet <corbet@lwn.net>
Signed-off-by: Daniel Bristot de Oliveira <bristot@kernel.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Daniel Bristot de Oliveira