Merge tag 'regulator-v3.13' of git://git.kernel.org/pub/scm/linux/kernel/git/broonie...

[deliverable/linux.git] / tools / perf / Documentation / perf-record.txt

diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt
index e297b74471b8a32e76912342f50f77534360ec87..052f7c4dc00c25a47dbe6355f0f762744ad5a79a 100644 (file)
--- a/tools/perf/Documentation/perf-record.txt
+++ b/tools/perf/Documentation/perf-record.txt
@@ -87,11 +87,25 @@ OPTIONS
 
 -m::
 --mmap-pages=::
-       Number of mmap data pages. Must be a power of two.
+       Number of mmap data pages (must be a power of two) or size
+       specification with appended unit character - B/K/M/G. The
+       size is rounded up to have nearest pages power of two value.
 
 -g::
+       Enables call-graph (stack chain/backtrace) recording.
+
 --call-graph::
-       Do call-graph (stack chain/backtrace) recording.
+       Setup and enable call-graph (stack chain/backtrace) recording,
+       implies -g.
+
+       Allows specifying "fp" (frame pointer) or "dwarf"
+       (DWARF's CFI - Call Frame Information) as the method to collect
+       the information used to show the call graphs.
+
+       In some systems, where binaries are build with gcc
+       --fomit-frame-pointer, using the "fp" method will produce bogus
+       call graphs, using "dwarf", if available (perf tools linked to
+       the libunwind library) should be used instead.
 
 -q::
 --quiet::
@@ -166,6 +180,9 @@ following filters are defined:
         - u:  only when the branch target is at the user level
         - k: only when the branch target is in the kernel
         - hv: only when the target is at the hypervisor level
+       - in_tx: only when the target is in a hardware transaction
+       - no_tx: only when the target is not in a hardware transaction
+       - abort_tx: only when the target is a hardware transaction abort
 
 +
 The option requires at least one branch type among any, any_call, any_ret, ind_call.
@@ -176,12 +193,14 @@ 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
 abort events and some memory events in precise mode on modern Intel CPUs.
 
+--transaction::
+Record transaction flags for transaction related events.
+
 SEE ALSO
 --------
 linkperf:perf-stat[1], linkperf:perf-list[1]