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This patch chanegs the logic of the -b, --branch-stack options
of perf record.
Based on users' request, the patch provides a default filter
mode with the -b (or --branch-any) option. With the option,
any type of taken branches is sampled.
With -j (or --branch-filter), the user can specify any
valid combination of branch types and privilege levels
if supported by the underlying hardware.
The -b (--branch any) is a shortcut for: --branch-filter any.
$ perf record -b foo
or:
$ perf record --branch-filter any foo
For more specific filtering:
$ perf record --branch-filter ind_call,u foo
Signed-off-by: Stephane Eranian <eranian@google.com>
Cc: peterz@infradead.org
Cc: acme@redhat.com
Cc: asharma@fb.com
Cc: ravitillo@lbl.gov
Cc: vweaver1@eecs.utk.edu
Cc: khandual@linux.vnet.ibm.com
Cc: dsahern@gmail.com
Link: http://lkml.kernel.org/r/1331246868-19905-2-git-send-email-eranian@google.com
Signed-off-by: Ingo Molnar <mingo@elte.hu>
a5aabdacde