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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> |
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| .. | ||
| completion.rst | ||
| index.rst | ||
| membarrier.rst | ||
| sched-arch.rst | ||
| sched-bwc.rst | ||
| sched-capacity.rst | ||
| sched-deadline.rst | ||
| sched-debug.rst | ||
| sched-design-CFS.rst | ||
| sched-domains.rst | ||
| sched-eevdf.rst | ||
| sched-energy.rst | ||
| sched-ext.rst | ||
| sched-nice-design.rst | ||
| sched-pelt.c | ||
| sched-rt-group.rst | ||
| sched-stats.rst | ||
| sched-util-clamp.rst | ||
| schedutil.rst | ||
| text_files.rst | ||