Commit 955f6def authored by Anshuman Khandual's avatar Anshuman Khandual Committed by Arnaldo Carvalho de Melo
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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: default avatarAnshuman Khandual <anshuman.khandual@arm.com>
Cc: James Clark <james.clark@arm.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lore.kernel.org/lkml/20221205064443.533587-1-anshuman.khandual@arm.com


Signed-off-by: default avatarArnaldo Carvalho de Melo <acme@redhat.com>
parent 3c97d25c

tools/perf/Documentation/perf-record.txt

+5 −0
Original line number Diff line number Diff line
@@ -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

tools/perf/util/parse-branch-options.c

+3 −0
Original line number Diff line number Diff line
@@ -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

};