linux-kernel - [PATCH] perf/tool: Add remaining branch filters to perf record

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Message-Id: <20221205064443.533587-1-anshuman.khandual@arm.com>
Date:   Mon,  5 Dec 2022 12:14:43 +0530
From:   Anshuman Khandual <anshuman.khandual@....com>
To:     linux-kernel@...r.kernel.org
Cc:     james.clark@....com, Anshuman Khandual <anshuman.khandual@....com>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...hat.com>,
        Arnaldo Carvalho de Melo <acme@...nel.org>,
        linux-perf-users@...r.kernel.org
Subject: [PATCH] perf/tool: Add remaining branch filters to perf record

This adds all remaining branch filters i.e no_cycles, no_flags and hw_index
to perf record tool. While here, also updates the documentation.

Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Ingo Molnar <mingo@...hat.com>
Cc: Arnaldo Carvalho de Melo <acme@...nel.org>
Cc: linux-perf-users@...r.kernel.org
Cc: linux-kernel@...r.kernel.org
Signed-off-by: Anshuman Khandual <anshuman.khandual@....com>
---
 tools/perf/Documentation/perf-record.txt | 5 +++++
 tools/perf/util/parse-branch-options.c   | 3 +++
 2 files changed, 8 insertions(+)

diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt
index e41ae950fdc3..7803c0c4c8f9 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
 };
-- 
2.25.1