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| author | Daniel Bristot de Oliveira <bristot@kernel.org> | 2022-11-11 16:53:06 +0100 |
|---|---|---|
| committer | Steven Rostedt (Google) <rostedt@goodmis.org> | 2022-12-09 18:06:24 -0500 |
| commit | 6d60f89691fc979e55b88508f4cfa8f6b4c56eac (patch) | |
| tree | fb395a03970b2d77a5ef17082e395172e8bea7cd /Documentation/tools | |
| parent | 4bc4b131d44c8ead00130fae678ff6c3417d7e13 (diff) | |
| download | linux-stable-6d60f89691fc979e55b88508f4cfa8f6b4c56eac.tar.gz linux-stable-6d60f89691fc979e55b88508f4cfa8f6b4c56eac.tar.bz2 linux-stable-6d60f89691fc979e55b88508f4cfa8f6b4c56eac.zip | |
tools/rv: Add in-kernel monitor interface
Add the ability to control and trace in-kernel monitors. This is
a generic interface, it will check for existing monitors and enable
standard setup, like enabling reactors.
For example:
# rv list
wip wakeup in preemptive per-cpu testing monitor. [OFF]
wwnr wakeup while not running per-task testing model. [OFF]
# rv mon wwnr --help
rv version 6.1.0-rc4: help
usage: rv mon wwnr [-h] [-q] [-r reactor] [-s] [-v]
-h/--help: print this menu and the reactor list
-r/--reactor 'reactor': enables the 'reactor'
-s/--self: when tracing (-t), also trace rv command
-t/--trace: trace monitor's event
-v/--verbose: print debug messages
available reactors: nop printk panic
# rv mon wwnr --trace
<TASK>-PID [CPU] TYPE ID STATE x EVENT -> NEXT_STATE FINAL
| | | | | | | | |
rv-3613 [001] event 3613 running x switch_out -> not_running Y
sshd-1248 [005] event 1248 running x switch_out -> not_running Y
<idle>-0 [005] event 71 not_running x wakeup -> not_running Y
<idle>-0 [005] event 71 not_running x switch_in -> running N
kcompactd0-71 [005] event 71 running x switch_out -> not_running Y
<idle>-0 [000] event 860 not_running x wakeup -> not_running Y
<idle>-0 [000] event 860 not_running x switch_in -> running N
systemd-oomd-860 [000] event 860 running x switch_out -> not_running Y
<idle>-0 [000] event 860 not_running x wakeup -> not_running Y
<idle>-0 [000] event 860 not_running x switch_in -> running N
systemd-oomd-860 [000] event 860 running x switch_out -> not_running Y
<idle>-0 [005] event 71 not_running x wakeup -> not_running Y
<idle>-0 [005] event 71 not_running x switch_in -> running N
kcompactd0-71 [005] event 71 running x switch_out -> not_running Y
<idle>-0 [000] event 860 not_running x wakeup -> not_running Y
<idle>-0 [000] event 860 not_running x switch_in -> running N
systemd-oomd-860 [000] event 860 running x switch_out -> not_running Y
<idle>-0 [001] event 3613 not_running x wakeup -> not_running Y
Link: https://lkml.kernel.org/r/1e57547e3acadda6e23949b2672c89e76ec2ec42.1668180100.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>
Diffstat (limited to 'Documentation/tools')
0 files changed, 0 insertions, 0 deletions