From 601897b54c7ed492a89b262dccd7c6f7faf12b30 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Fri, 25 Sep 2015 16:15:39 +0300 Subject: perf auxtrace: Add option to synthesize branch stacks on samples Add AUX area tracing option 'l' to synthesize branch stacks on samples just like sample type PERF_SAMPLE_BRANCH_STACK. This is taken into use by Intel PT in a subsequent patch. Based-on-patch-by: Andi Kleen Signed-off-by: Adrian Hunter Cc: Jiri Olsa Link: http://lkml.kernel.org/r/1443186956-18718-9-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/itrace.txt | 4 ++++ 1 file changed, 4 insertions(+) (limited to 'tools/perf/Documentation/itrace.txt') diff --git a/tools/perf/Documentation/itrace.txt b/tools/perf/Documentation/itrace.txt index 2ff946677e3b..65453f4c7006 100644 --- a/tools/perf/Documentation/itrace.txt +++ b/tools/perf/Documentation/itrace.txt @@ -6,6 +6,7 @@ e synthesize error events d create a debug log g synthesize a call chain (use with i or x) + l synthesize last branch entries (use with i or x) The default is all events i.e. the same as --itrace=ibxe @@ -20,3 +21,6 @@ Also the call chain size (default 16, max. 1024) for instructions or transactions events can be specified. + + Also the number of last branch entries (default 64, max. 1024) for + instructions or transactions events can be specified. -- cgit v1.2.3-55-g7522