Andrea Righi 431844b65f 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>		2024-09-23 06:53:02 -10:00
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autogroup.c
autogroup.h
build_policy.c
build_utility.c
clock.c
completion.c
core.c	sched, sched_ext: Disable SM_IDLE/rq empty path when scx_enabled()	2024-09-23 05:40:53 -10:00
core_sched.c
cpuacct.c
cpudeadline.c
cpudeadline.h
cpufreq.c
cpufreq_schedutil.c
cpupri.c
cpupri.h
cputime.c
deadline.c
debug.c
ext.c	sched_ext: Provide a sysfs enable_seq counter	2024-09-23 06:53:02 -10:00
ext.h
fair.c	sched_ext: Initial pull request for v6.12	2024-09-21 09:44:57 -07:00
features.h
idle.c
isolation.c
loadavg.c
Makefile
membarrier.c
pelt.c
pelt.h
psi.c
rt.c
sched-pelt.h
sched.h	sched: Put task_group::idle under CONFIG_GROUP_SCHED_WEIGHT	2024-09-23 05:24:12 -10:00
smp.h
stats.c
stats.h
stop_task.c
swait.c
syscalls.c	sched_ext: Initial pull request for v6.12	2024-09-21 09:44:57 -07:00
topology.c
wait.c
wait_bit.c