Namhyung Kim 119a784c81 perf/core: Add a new read format to get a number of lost samples ...

Sometimes we want to know an accurate number of samples even if it's
lost.  Currenlty PERF_RECORD_LOST is generated for a ring-buffer which
might be shared with other events.  So it's hard to know per-event
lost count.

Add event->lost_samples field and PERF_FORMAT_LOST to retrieve it from
userspace.

Original-patch-by: Jiri Olsa <jolsa@redhat.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lkml.kernel.org/r/20220616180623.1358843-1-namhyung@kernel.org

2022-06-28 09:08:31 +02:00

..

callchain.c

uaccess: remove CONFIG_SET_FS

2022-02-25 09:36:06 +01:00

core.c

perf/core: Add a new read format to get a number of lost samples

2022-06-28 09:08:31 +02:00

hw_breakpoint.c

perf/hw_breakpoint: Replace deprecated CPU-hotplug functions

2021-08-26 09:14:36 +02:00

internal.h

perf/core: Fix perf_mmap fail when CONFIG_PERF_USE_VMALLOC enabled

2022-04-19 21:15:42 +02:00

Makefile

perf/core: allow ftrace for functions in kernel/event/core.c

2021-10-25 22:50:42 -04:00

ring_buffer.c

perf/core: Add a new read format to get a number of lost samples

2022-06-28 09:08:31 +02:00

uprobes.c

Yang Shi has improved the behaviour of khugepaged collapsing of readonly

2022-05-26 12:32:41 -07:00