diff options
Diffstat (limited to 'tools/perf/Documentation/perf-record.txt')
| -rw-r--r-- | tools/perf/Documentation/perf-record.txt | 8 |
1 files changed, 6 insertions, 2 deletions
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index 0228efc96686..e41ae950fdc3 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -400,6 +400,7 @@ following filters are defined: For the platforms with Intel Arch LBR support (12th-Gen+ client or 4th-Gen Xeon+ server), the save branch type is unconditionally enabled when the taken branch stack sampling is enabled. + - priv: save privilege state during sampling in case binary is not available later + The option requires at least one branch type among any, any_call, any_ret, ind_call, cond. @@ -410,6 +411,7 @@ is enabled for all the sampling events. The sampled branch type is the same for The various filters must be specified as a comma separated list: --branch-filter any_ret,u,k Note that this feature may not be available on all processors. +-W:: --weight:: Enable weightened sampling. An additional weight is recorded per sample and can be displayed with the weight and local_weight sort keys. This currently works for TSX @@ -433,8 +435,10 @@ if combined with -a or -C options. -D:: --delay=:: After starting the program, wait msecs before measuring (-1: start with events -disabled). This is useful to filter out the startup phase of the program, which -is often very different. +disabled), or enable events only for specified ranges of msecs (e.g. +-D 10-20,30-40 means wait 10 msecs, enable for 10 msecs, wait 10 msecs, enable +for 10 msecs, then stop). Note, delaying enabling of events is useful to filter +out the startup phase of the program, which is often very different. -I:: --intr-regs:: |