diff options
| author | Andrea Righi <andrea.righi@linux.dev> | 2024-09-21 21:39:21 +0200 |
|---|---|---|
| committer | Tejun Heo <tj@kernel.org> | 2024-09-23 18:53:02 +0200 |
| commit | 431844b65f4c1b988ccd886f2ed29c138f7bb262 (patch) | |
| tree | 3d84bd26e2e6c1be937bc39c65a2fbbf947abb1b /drivers/infiniband/hw/efa/efa_verbs.c | |
| parent | sched_ext: Fix build when !CONFIG_STACKTRACE (diff) | |
| download | linux-431844b65f4c1b988ccd886f2ed29c138f7bb262.tar.xz linux-431844b65f4c1b988ccd886f2ed29c138f7bb262.zip | |
sched_ext: Provide a sysfs enable_seq counter
As discussed during the distro-centric session within the sched_ext
Microconference at LPC 2024, introduce a sequence counter that is
incremented every time a BPF scheduler is loaded.
This feature can help distributions in diagnosing potential performance
regressions by identifying systems where users are running (or have ran)
custom BPF schedulers.
Example:
arighi@virtme-ng~> cat /sys/kernel/sched_ext/enable_seq
0
arighi@virtme-ng~> sudo scx_simple
local=1 global=0
^CEXIT: unregistered from user space
arighi@virtme-ng~> cat /sys/kernel/sched_ext/enable_seq
1
In this way user-space tools (such as Ubuntu's apport and similar) are
able to gather and include this information in bug reports.
Cc: Giovanni Gherdovich <giovanni.gherdovich@suse.com>
Cc: Kleber Sacilotto de Souza <kleber.souza@canonical.com>
Cc: Marcelo Henrique Cerri <marcelo.cerri@canonical.com>
Cc: Phil Auld <pauld@redhat.com>
Signed-off-by: Andrea Righi <andrea.righi@linux.dev>
Signed-off-by: Tejun Heo <tj@kernel.org>
Diffstat (limited to 'drivers/infiniband/hw/efa/efa_verbs.c')
0 files changed, 0 insertions, 0 deletions