superrob1500
/
mirror-linux
mirror of https://github.com/torvalds/linux
1
0
Fork 0
Code Issues Packages Projects Releases Wiki Activity
mirror-linux/tools/tracing/rtla
History
Crystal Wood 3138df6f0c rtla/timerlat: Exit top main loop on any non-zero wait_retval 
Comparing to exactly 1 will fail if more than one ring buffer
event was seen since the last call to timerlat_bpf_wait(), which
can happen in some race scenarios.

Signed-off-by: Crystal Wood <crwood@redhat.com>
Link: https://lore.kernel.org/r/20251112152529.956778-5-crwood@redhat.com
Signed-off-by: Tomas Glozar <tglozar@redhat.com>
 		2025-11-21 10:30:27 +01:00
..
sample tools/rtla: Improve exception handling in timerlat_load.py 2024-11-19 08:57:13 -05:00
src rtla/timerlat: Exit top main loop on any non-zero wait_retval 2025-11-21 10:30:27 +01:00
tests rtla/tests: Don't rely on matching ^1ALL 2025-11-21 10:30:27 +01:00
.gitignore rtla/timerlat: Add BPF skeleton to collect samples 2025-03-04 12:35:18 -05:00
Build tools/rtla: Use tools/build makefiles to build rtla 2024-03-20 05:39:06 +01:00
Makefile tracing tooling updates for 6.15: 2025-03-27 17:03:01 -07:00
Makefile.config rtla: Check pkg-config install 2025-08-19 20:32:54 -04:00
Makefile.rtla tools/rtla: Fix unassigned nr_cpus 2025-11-20 13:15:54 +01:00
Makefile.standalone tools/rtla: Use tools/build makefiles to build rtla 2024-03-20 05:39:06 +01:00
README.txt Documentation/rtla: Include BPF sample collection 2025-04-14 10:42:55 -06:00

README.txt 

RTLA: Real-Time Linux Analysis tools

The rtla meta-tool includes a set of commands that aims to analyze
the real-time properties of Linux. Instead of testing Linux as a black box,
rtla leverages kernel tracing capabilities to provide precise information
about the properties and root causes of unexpected results.

Installing RTLA

RTLA depends on the following libraries and tools:

 - libtracefs
 - libtraceevent
 - libcpupower (optional, for --deepest-idle-state)

For BPF sample collection support, the following extra dependencies are
required:

 - libbpf 1.0.0 or later
 - bpftool with skeleton support
 - clang with BPF CO-RE support

It also depends on python3-docutils to compile man pages.

For development, we suggest the following steps for compiling rtla:

  $ git clone git://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git
  $ cd libtraceevent/
  $ make
  $ sudo make install
  $ cd ..
  $ git clone git://git.kernel.org/pub/scm/libs/libtrace/libtracefs.git
  $ cd libtracefs/
  $ make
  $ sudo make install
  $ cd ..
  $ cd $libcpupower_src
  $ make
  $ sudo make install
  $ cd $rtla_src
  $ make
  $ sudo make install

For further information, please refer to the rtla man page.