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Thu, 2 Feb 2023 06:27:03 -0600 From: Sandipan Das To: , , CC: , , , , , , , , , , , , , , , , , , , Subject: [PATCH v4 2/4] perf session: Show branch speculation info in raw dump Date: Thu, 2 Feb 2023 17:56:15 +0530 Message-ID: X-Mailer: git-send-email 2.34.1 In-Reply-To: References: MIME-Version: 1.0 X-Originating-IP: [10.180.168.240] X-ClientProxiedBy: SATLEXMB03.amd.com (10.181.40.144) To SATLEXMB04.amd.com (10.181.40.145) X-EOPAttributedMessage: 0 X-MS-PublicTrafficType: Email X-MS-TrafficTypeDiagnostic: DS1PEPF0000E62E:EE_|CH0PR12MB5236:EE_ X-MS-Office365-Filtering-Correlation-Id: 8648c29c-7265-4668-e8da-08db0518ce75 X-MS-Exchange-SenderADCheck: 1 X-MS-Exchange-AntiSpam-Relay: 0 X-Microsoft-Antispam: BCL:0; X-Microsoft-Antispam-Message-Info: 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 X-Forefront-Antispam-Report: CIP:165.204.84.17;CTRY:US;LANG:en;SCL:1;SRV:;IPV:CAL;SFV:NSPM;H:SATLEXMB04.amd.com;PTR:InfoDomainNonexistent;CAT:NONE;SFS:(13230025)(4636009)(376002)(39860400002)(136003)(396003)(346002)(451199018)(40470700004)(46966006)(36840700001)(7416002)(316002)(47076005)(86362001)(478600001)(2616005)(82740400003)(26005)(6666004)(356005)(81166007)(82310400005)(16526019)(186003)(5660300002)(54906003)(110136005)(83380400001)(336012)(36756003)(426003)(2906002)(40480700001)(40460700003)(36860700001)(8936002)(70206006)(8676002)(44832011)(41300700001)(70586007)(4326008)(36900700001);DIR:OUT;SFP:1101; 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This can be useful for purposes of code optimization. E.g. $ perf record -j any,u ./test_branch $ perf report --dump-raw-trace Before: [...] 8380958377610 0x40b178 [0x1b0]: PERF_RECORD_SAMPLE(IP, 0x2): 7952/7952: 0x4f851a period: 48973 addr: 0 ... branch stack: nr:16 ..... 0: 00000000004b52fd -> 00000000004f82c0 0 cycles P 0 ..... 1: ffffffff8220137c -> 00000000004b52f0 0 cycles M 0 ..... 2: 000000000041d1c4 -> 00000000004b52f0 0 cycles P 0 ..... 3: 00000000004e7ead -> 000000000041d1b0 0 cycles M 0 ..... 4: 00000000004e7f91 -> 00000000004e7ead 0 cycles P 0 ..... 5: 00000000004e7ea8 -> 00000000004e7f70 0 cycles P 0 ..... 6: 00000000004e7e52 -> 00000000004e7e98 0 cycles M 0 ..... 7: 00000000004e7e1f -> 00000000004e7e40 0 cycles M 0 ..... 8: 00000000004e7f60 -> 00000000004e7df0 0 cycles P 0 ..... 9: 00000000004e7f58 -> 00000000004e7f60 0 cycles M 0 ..... 10: 000000000041d85d -> 00000000004e7f50 0 cycles P 0 ..... 11: 000000000043306a -> 000000000041d840 0 cycles P 0 ..... 12: ffffffff8220137c -> 0000000000433040 0 cycles M 0 ..... 13: 000000000041e4a1 -> 0000000000433040 0 cycles P 0 ..... 14: ffffffff8220137c -> 000000000041e490 0 cycles M 0 ..... 15: 000000000041d89b -> 000000000041e487 0 cycles P 0 ... thread: test_branch:7952 ...... dso: /data/sandipan/test_branch [...] After: [...] 8380958377610 0x40b178 [0x1b0]: PERF_RECORD_SAMPLE(IP, 0x2): 7952/7952: 0x4f851a period: 48973 addr: 0 ... branch stack: nr:16 ..... 0: 00000000004b52fd -> 00000000004f82c0 0 cycles P 0 NON_SPEC_CORRECT_PATH ..... 1: ffffffff8220137c -> 00000000004b52f0 0 cycles M 0 NON_SPEC_CORRECT_PATH ..... 2: 000000000041d1c4 -> 00000000004b52f0 0 cycles P 0 NON_SPEC_CORRECT_PATH ..... 3: 00000000004e7ead -> 000000000041d1b0 0 cycles M 0 NON_SPEC_CORRECT_PATH ..... 4: 00000000004e7f91 -> 00000000004e7ead 0 cycles P 0 NON_SPEC_CORRECT_PATH ..... 5: 00000000004e7ea8 -> 00000000004e7f70 0 cycles P 0 NON_SPEC_CORRECT_PATH ..... 6: 00000000004e7e52 -> 00000000004e7e98 0 cycles M 0 SPEC_CORRECT_PATH ..... 7: 00000000004e7e1f -> 00000000004e7e40 0 cycles M 0 NON_SPEC_CORRECT_PATH ..... 8: 00000000004e7f60 -> 00000000004e7df0 0 cycles P 0 NON_SPEC_CORRECT_PATH ..... 9: 00000000004e7f58 -> 00000000004e7f60 0 cycles M 0 NON_SPEC_CORRECT_PATH ..... 10: 000000000041d85d -> 00000000004e7f50 0 cycles P 0 NON_SPEC_CORRECT_PATH ..... 11: 000000000043306a -> 000000000041d840 0 cycles P 0 NON_SPEC_CORRECT_PATH ..... 12: ffffffff8220137c -> 0000000000433040 0 cycles M 0 NON_SPEC_CORRECT_PATH ..... 13: 000000000041e4a1 -> 0000000000433040 0 cycles P 0 NON_SPEC_CORRECT_PATH ..... 14: ffffffff8220137c -> 000000000041e490 0 cycles M 0 NON_SPEC_CORRECT_PATH ..... 15: 000000000041d89b -> 000000000041e487 0 cycles P 0 NON_SPEC_CORRECT_PATH ... thread: test_branch:7952 ...... dso: /data/sandipan/test_branch [...] Signed-off-by: Sandipan Das --- tools/perf/util/session.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c index 7c021c6cedb9..a42f051dab9d 100644 --- a/tools/perf/util/session.c +++ b/tools/perf/util/session.c @@ -1180,7 +1180,7 @@ static void branch_stack__printf(struct perf_sample *sample, bool callstack) struct branch_entry *e = &entries[i]; if (!callstack) { - printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 " %hu cycles %s%s%s%s %x %s\n", + printf("..... %2"PRIu64": %016" PRIx64 " -> %016" PRIx64 " %hu cycles %s%s%s%s %x %s %s\n", i, e->from, e->to, (unsigned short)e->flags.cycles, e->flags.mispred ? "M" : " ", @@ -1188,7 +1188,8 @@ static void branch_stack__printf(struct perf_sample *sample, bool callstack) e->flags.abort ? "A" : " ", e->flags.in_tx ? "T" : " ", (unsigned)e->flags.reserved, - get_branch_type(e)); + get_branch_type(e), + e->flags.spec ? branch_spec_desc(e->flags.spec) : ""); } else { if (i == 0) { printf("..... %2"PRIu64": %016" PRIx64 "\n"