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| author | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-02-12 16:24:37 +0300 |
|---|---|---|
| committer | Daniel Vetter <daniel.vetter@ffwll.ch> | 2016-02-12 16:24:37 +0300 |
| commit | 05fd934ba585ea8c9f129f15f11327adb1f96fe3 (patch) | |
| tree | 7b678c512c43419ccf484e71c84d69caee84a6da /tools/perf/Documentation/perf-record.txt | |
| parent | ebb7c78d358b2ea45c7d997423e6feb42e5ce4ef (diff) | |
| parent | 382ab95d1af85381d8a5dff09b16a80c7e492534 (diff) | |
| download | linux-05fd934ba585ea8c9f129f15f11327adb1f96fe3.tar.xz | |
Merge tag 'topic/drm-misc-2016-02-12' into drm-intel-next-queued
Backmerge to get at the new encoder_mask support in atomic helpers.
Signed-off-by: Daniel Vetter <daniel.vetter@intel.com>
Diffstat (limited to 'tools/perf/Documentation/perf-record.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-record.txt | 27 |
1 files changed, 24 insertions, 3 deletions
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index e630a7d2c348..fbceb631387c 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -207,11 +207,23 @@ comma-separated list with no space: 0,1. Ranges of CPUs are specified with -: 0- In per-thread mode with inheritance mode on (default), samples are captured only when the thread executes on the designated CPUs. Default is to monitor all CPUs. +-B:: +--no-buildid:: +Do not save the build ids of binaries in the perf.data files. This skips +post processing after recording, which sometimes makes the final step in +the recording process to take a long time, as it needs to process all +events looking for mmap records. The downside is that it can misresolve +symbols if the workload binaries used when recording get locally rebuilt +or upgraded, because the only key available in this case is the +pathname. You can also set the "record.build-id" config variable to +'skip to have this behaviour permanently. + -N:: --no-buildid-cache:: Do not update the buildid cache. This saves some overhead in situations where the information in the perf.data file (which includes buildids) -is sufficient. +is sufficient. You can also set the "record.build-id" config variable to +'no-cache' to have the same effect. -G name,...:: --cgroup name,...:: @@ -314,11 +326,20 @@ This option sets the time out limit. The default value is 500 ms. Record context switch events i.e. events of type PERF_RECORD_SWITCH or PERF_RECORD_SWITCH_CPU_WIDE. ---clang-path:: +--clang-path=PATH:: Path to clang binary to use for compiling BPF scriptlets. +(enabled when BPF support is on) ---clang-opt:: +--clang-opt=OPTIONS:: Options passed to clang when compiling BPF scriptlets. +(enabled when BPF support is on) + +--vmlinux=PATH:: +Specify vmlinux path which has debuginfo. +(enabled when BPF prologue is on) + +--buildid-all:: +Record build-id of all DSOs regardless whether it's actually hit or not. SEE ALSO -------- |