From 955f6def5590ce6ca11a1c1ced0d2d1c95421059 Mon Sep 17 00:00:00 2001 From: Anshuman Khandual Date: Mon, 5 Dec 2022 12:14:43 +0530 Subject: perf record: Add remaining branch filters: "no_cycles", "no_flags" & "hw_index" This adds all remaining branch filters i.e "no_cycles", "no_flags" and "hw_index". While here, also updates the documentation. Signed-off-by: Anshuman Khandual Cc: James Clark Cc: Peter Zijlstra Link: http://lore.kernel.org/lkml/20221205064443.533587-1-anshuman.khandual@arm.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/perf-record.txt | 5 +++++ tools/perf/util/parse-branch-options.c | 3 +++ 2 files changed, 8 insertions(+) (limited to 'tools') diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index 9ea6d44aca58..5f9fa07b3dde 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -388,6 +388,7 @@ following filters are defined: - any_call: any function call or system call - any_ret: any function return or system call return - ind_call: any indirect branch + - ind_jmp: any indirect jump - call: direct calls, including far (to/from kernel) calls - u: only when the branch target is at the user level - k: only when the branch target is in the kernel @@ -396,6 +397,10 @@ following filters are defined: - no_tx: only when the target is not in a hardware transaction - abort_tx: only when the target is a hardware transaction abort - cond: conditional branches + - call_stack: save call stack + - no_flags: don't save branch flags e.g prediction, misprediction etc + - no_cycles: don't save branch cycles + - hw_index: save branch hardware index - save_type: save branch type during sampling in case binary is not available later For the platforms with Intel Arch LBR support (12th-Gen+ client or 4th-Gen Xeon+ server), the save branch type is unconditionally enabled diff --git a/tools/perf/util/parse-branch-options.c b/tools/perf/util/parse-branch-options.c index 31faf2bb49ff..fd67d204d720 100644 --- a/tools/perf/util/parse-branch-options.c +++ b/tools/perf/util/parse-branch-options.c @@ -30,8 +30,11 @@ static const struct branch_mode branch_modes[] = { BRANCH_OPT("cond", PERF_SAMPLE_BRANCH_COND), BRANCH_OPT("ind_jmp", PERF_SAMPLE_BRANCH_IND_JUMP), BRANCH_OPT("call", PERF_SAMPLE_BRANCH_CALL), + BRANCH_OPT("no_flags", PERF_SAMPLE_BRANCH_NO_FLAGS), + BRANCH_OPT("no_cycles", PERF_SAMPLE_BRANCH_NO_CYCLES), BRANCH_OPT("save_type", PERF_SAMPLE_BRANCH_TYPE_SAVE), BRANCH_OPT("stack", PERF_SAMPLE_BRANCH_CALL_STACK), + BRANCH_OPT("hw_index", PERF_SAMPLE_BRANCH_HW_INDEX), BRANCH_OPT("priv", PERF_SAMPLE_BRANCH_PRIV_SAVE), BRANCH_END }; -- cgit v1.2.3