This short patch series adds a new filter to the branch stack sampling feature. The new filter enables sampling only indirect jumps. For each the source and target are captured.
The new branch_sample_type flag is: PERF_SAMPLE_BRANCH_IND_JUMP The series provides full support in the perf record tool: $ perf record -j ind_jmp ... On Intel x86 processors, the filter is implemented using the LBR hw filter. This filter is useful to study targets of indirect jumps. Stephane Eranian (3): perf: add new PERF_SAMPLE_BRANCH_IND_JUMP branch sample type perf/x86: add support for PERF_SAMPLE_BRANCH_IND_JUMP perf record: add support for sampling indirect jumps arch/x86/kernel/cpu/perf_event_intel_lbr.c | 10 +++++++++- include/uapi/linux/perf_event.h | 2 ++ tools/perf/builtin-record.c | 1 + 3 files changed, 12 insertions(+), 1 deletion(-) -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
