diff options
Diffstat (limited to 'tools/perf/Documentation')
| -rw-r--r-- | tools/perf/Documentation/perf-record.txt | 6 | ||||
| -rw-r--r-- | tools/perf/Documentation/perf-report.txt | 12 |
2 files changed, 17 insertions, 1 deletions
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index 398f8d53bd6d..af9a54ece024 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -214,6 +214,12 @@ if combined with -a or -C options. After starting the program, wait msecs before measuring. This is useful to filter out the startup phase of the program, which is often very different. +-I:: +--intr-regs:: +Capture machine state (registers) at interrupt, i.e., on counter overflows for +each sample. List of captured registers depends on the architecture. This option +is off by default. + SEE ALSO -------- linkperf:perf-stat[1], linkperf:perf-list[1] diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index 0927bf4e6c2a..dd7cccdde498 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -159,7 +159,7 @@ OPTIONS --dump-raw-trace:: Dump raw trace in ASCII. --g [type,min[,limit],order[,key]]:: +-g [type,min[,limit],order[,key][,branch]]:: --call-graph:: Display call chains using type, min percent threshold, optional print limit and order. @@ -177,6 +177,11 @@ OPTIONS - function: compare on functions - address: compare on individual code addresses + branch can be: + - branch: include last branch information in callgraph + when available. Usually more convenient to use --branch-history + for this. + Default: fractal,0.5,callee,function. --children:: @@ -266,6 +271,11 @@ OPTIONS branch stacks and it will automatically switch to the branch view mode, unless --no-branch-stack is used. +--branch-history:: + Add the addresses of sampled taken branches to the callstack. + This allows to examine the path the program took to each sample. + The data collection must have used -b (or -j) and -g. + --objdump=<path>:: Path to objdump binary. |