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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: Anshuman 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: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Anshuman Khandual 2022-12-05 12:14:43 +05:30 committed by Arnaldo Carvalho de Melo
parent 3c97d25ceb
commit 955f6def55
2 changed files with 8 additions and 0 deletions
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5
tools/perf/Documentation/perf-record.txt
View File

@ -388,6 +388,7 @@ following filters are defined:
- any_call: any function call or system call - any_call: any function call or system call
- any_ret: any function return or system call return - any_ret: any function return or system call return
- ind_call: any indirect branch - ind_call: any indirect branch
- ind_jmp: any indirect jump
- call: direct calls, including far (to/from kernel) calls - call: direct calls, including far (to/from kernel) calls
- u: only when the branch target is at the user level - u: only when the branch target is at the user level
- k: only when the branch target is in the kernel - 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 - no_tx: only when the target is not in a hardware transaction
- abort_tx: only when the target is a hardware transaction abort - abort_tx: only when the target is a hardware transaction abort
- cond: conditional branches - 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 - 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 For the platforms with Intel Arch LBR support (12th-Gen+ client or
4th-Gen Xeon+ server), the save branch type is unconditionally enabled 4th-Gen Xeon+ server), the save branch type is unconditionally enabled

3
tools/perf/util/parse-branch-options.c
View File

@ -30,8 +30,11 @@ static const struct branch_mode branch_modes[] = {
BRANCH_OPT("cond", PERF_SAMPLE_BRANCH_COND), BRANCH_OPT("cond", PERF_SAMPLE_BRANCH_COND),
BRANCH_OPT("ind_jmp", PERF_SAMPLE_BRANCH_IND_JUMP), BRANCH_OPT("ind_jmp", PERF_SAMPLE_BRANCH_IND_JUMP),
BRANCH_OPT("call", PERF_SAMPLE_BRANCH_CALL), 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("save_type", PERF_SAMPLE_BRANCH_TYPE_SAVE),
BRANCH_OPT("stack", PERF_SAMPLE_BRANCH_CALL_STACK), 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_OPT("priv", PERF_SAMPLE_BRANCH_PRIV_SAVE),
BRANCH_END BRANCH_END
}; };