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When mmaping multiple events we need to find the right evsel that matches an event in the ring buffer. For that we need to set the PERF_FORMAT_ID bit in perf_event_attr.read_format so that when we read the event fds we get that id to then hash it and be able later to use perf_evlist__id2evsel to find the right evsel. We also need to set the PERF_SAMPLE_ID bit in perf_event_attr.sample_type to ask for that id to be stashed in each sample, so that we can demux it. So add a perf_evsel__set_sample_id() method to do those two things in one operation. Cc: David Ahern <dsahern@gmail.com> Cc: Frederic Weisbecker <fweisbec@gmail.com> Cc: Jiri Olsa <jolsa@redhat.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Namhyung Kim <namhyung@gmail.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Stephane Eranian <eranian@google.com> Link: http://lkml.kernel.org/n/tip-1z4xcmbud30lamklfe80oopu@git.kernel.org Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> |
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| .. | ||
| attr | ||
| attr.c | ||
| attr.py | ||
| builtin-test.c | ||
| dso-data.c | ||
| evsel-roundtrip-name.c | ||
| evsel-tp-sched.c | ||
| mmap-basic.c | ||
| open-syscall-all-cpus.c | ||
| open-syscall-tp-fields.c | ||
| open-syscall.c | ||
| parse-events.c | ||
| perf-record.c | ||
| pmu.c | ||
| rdpmc.c | ||
| tests.h | ||
| vmlinux-kallsyms.c | ||