diff options
| author |   Kyle Huey <me@kylehuey.com> | 2024-04-11 18:50:18 -0700 |
|---|---|---|
| committer |   Ingo Molnar <mingo@kernel.org> | 2024-04-12 11:49:50 +0200 |
| commit | c4fcc7d1f41532e878087c7c43f4cf247604d68b (patch) | |
| tree | 42d5d279844896a20d768199e71ca22cb84671a5 /scripts/gdb/linux/utils.py | |
| parent | perf/bpf: Remove unneeded uses_default_overflow_handler() (diff) | |
| download | linux-rng-c4fcc7d1f41532e878087c7c43f4cf247604d68b.tar.xz linux-rng-c4fcc7d1f41532e878087c7c43f4cf247604d68b.zip | |
perf/bpf: Allow a BPF program to suppress all sample side effects
Returning zero from a BPF program attached to a perf event already
suppresses any data output. Return early from __perf_event_overflow() in
this case so it will also suppress event_limit accounting, SIGTRAP
generation, and F_ASYNC signalling.
Signed-off-by: Kyle Huey <khuey@kylehuey.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: Song Liu <song@kernel.org>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Andrii Nakryiko <andrii@kernel.org>
Link: https://lore.kernel.org/r/20240412015019.7060-7-khuey@kylehuey.com
Diffstat (limited to 'scripts/gdb/linux/utils.py')
0 files changed, 0 insertions, 0 deletions