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Mon, 30 Jan 2023 00:00:40 -0600 From: Sandipan Das To: , , CC: , , , , , , , , , , , , , , , , Subject: [PATCH v3 1/2] perf script: Show branch speculation info Date: Mon, 30 Jan 2023 11:29:15 +0530 Message-ID: <87c48949f5a442dda6d4dc75d4a4303973eb04b2.1675057032.git.sandipan.das@amd.com> 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: DM6NAM11FT038:EE_|SJ0PR12MB6710:EE_ X-MS-Office365-Filtering-Correlation-Id: e8ff8333-becf-4819-9f92-08db02875614 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)(346002)(136003)(39860400002)(376002)(396003)(451199018)(46966006)(36840700001)(40470700004)(83380400001)(8676002)(426003)(47076005)(36860700001)(70586007)(70206006)(2616005)(82740400003)(81166007)(41300700001)(336012)(82310400005)(356005)(26005)(186003)(7696005)(6666004)(8936002)(16526019)(86362001)(316002)(4326008)(7416002)(44832011)(36756003)(40460700003)(110136005)(2906002)(478600001)(40480700001)(5660300002)(54906003)(36900700001);DIR:OUT;SFP:1101; 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This can be useful for optimizing code further. The speculation info is appended to the end of the list of fields so any existing tools that use "/" as a delimiter for access fields via an index remain unaffected. Also show "-" instead of "N/A" when speculation info is unavailable because "/" is used as the field separator. E.g. $ perf record -j any,u,save_type ./test_branch $ perf script --fields brstacksym Before: [...] check_match+0x60/strcmp+0x0/P/-/-/0/CALL do_lookup_x+0x3c5/check_match+0x0/P/-/-/0/CALL [...] After: [...] check_match+0x60/strcmp+0x0/P/-/-/0/CALL/NON_SPEC_CORRECT_PATH do_lookup_x+0x3c5/check_match+0x0/P/-/-/0/CALL/NON_SPEC_CORRECT_PATH [...] Signed-off-by: Sandipan Das --- tools/perf/builtin-script.c | 5 +++-- tools/perf/util/branch.c | 15 +++++++++++++++ tools/perf/util/branch.h | 2 ++ tools/perf/util/evsel.c | 15 ++++++++++++--- 4 files changed, 32 insertions(+), 5 deletions(-) diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c index 69394ac0a20d..782319e8fe6a 100644 --- a/tools/perf/builtin-script.c +++ b/tools/perf/builtin-script.c @@ -880,12 +880,13 @@ mispred_str(struct branch_entry *br) static int print_bstack_flags(FILE *fp, struct branch_entry *br) { - return fprintf(fp, "/%c/%c/%c/%d/%s ", + return fprintf(fp, "/%c/%c/%c/%d/%s/%s ", mispred_str(br), br->flags.in_tx ? 'X' : '-', br->flags.abort ? 'A' : '-', br->flags.cycles, - get_branch_type(br)); + get_branch_type(br), + br->flags.spec ? branch_spec_desc(br->flags.spec) : "-"); } static int perf_sample__fprintf_brstack(struct perf_sample *sample, diff --git a/tools/perf/util/branch.c b/tools/perf/util/branch.c index 6d38238481d3..378f16a24751 100644 --- a/tools/perf/util/branch.c +++ b/tools/perf/util/branch.c @@ -212,3 +212,18 @@ int branch_type_str(struct branch_type_stat *st, char *bf, int size) return printed; } + +const char *branch_spec_desc(int spec) +{ + const char *branch_spec_outcomes[PERF_BR_SPEC_MAX] = { + "N/A", + "SPEC_WRONG_PATH", + "NON_SPEC_CORRECT_PATH", + "SPEC_CORRECT_PATH", + }; + + if (spec >= 0 && spec < PERF_BR_SPEC_MAX) + return branch_spec_outcomes[spec]; + + return NULL; +} diff --git a/tools/perf/util/branch.h b/tools/perf/util/branch.h index 3ed792db1125..e41bfffe2217 100644 --- a/tools/perf/util/branch.h +++ b/tools/perf/util/branch.h @@ -89,4 +89,6 @@ const char *get_branch_type(struct branch_entry *e); void branch_type_stat_display(FILE *fp, struct branch_type_stat *st); int branch_type_str(struct branch_type_stat *st, char *bf, int bfsize); +const char *branch_spec_desc(int spec); + #endif /* _PERF_BRANCH_H */ diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index 8550638587e5..019e53db03b3 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -2319,7 +2319,10 @@ u64 evsel__bitfield_swap_branch_flags(u64 value) * abort:1 //transaction abort * cycles:16 //cycle count to last branch * type:4 //branch type - * reserved:40 + * spec:2 //branch speculation info + * new_type:4 //additional branch type + * priv:3 //privilege level + * reserved:31 * } * } * @@ -2335,7 +2338,10 @@ u64 evsel__bitfield_swap_branch_flags(u64 value) new_val |= bitfield_swap(value, 3, 1); new_val |= bitfield_swap(value, 4, 16); new_val |= bitfield_swap(value, 20, 4); - new_val |= bitfield_swap(value, 24, 40); + new_val |= bitfield_swap(value, 24, 2); + new_val |= bitfield_swap(value, 26, 4); + new_val |= bitfield_swap(value, 30, 3); + new_val |= bitfield_swap(value, 33, 31); } else { new_val = bitfield_swap(value, 63, 1); new_val |= bitfield_swap(value, 62, 1); @@ -2343,7 +2349,10 @@ u64 evsel__bitfield_swap_branch_flags(u64 value) new_val |= bitfield_swap(value, 60, 1); new_val |= bitfield_swap(value, 44, 16); new_val |= bitfield_swap(value, 40, 4); - new_val |= bitfield_swap(value, 0, 40); + new_val |= bitfield_swap(value, 38, 2); + new_val |= bitfield_swap(value, 34, 4); + new_val |= bitfield_swap(value, 31, 3); + new_val |= bitfield_swap(value, 0, 31); } return new_val; From patchwork Mon Jan 30 05:59:16 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sandipan Das X-Patchwork-Id: 50141 Return-Path: Delivered-To: ouuuleilei@gmail.com Received: by 2002:adf:eb09:0:0:0:0:0 with SMTP id s9csp2027827wrn; Sun, 29 Jan 2023 22:05:25 -0800 (PST) X-Google-Smtp-Source: AK7set/F90vfC6hwh8FiHq4+jTcelWyxN1oMg17T935bGh1vDeiGOBTBzFhvCEfFpzd6nQPIDU+8 X-Received: by 2002:a17:90b:4a45:b0:22c:92:15db with SMTP id lb5-20020a17090b4a4500b0022c009215dbmr8280226pjb.25.1675058724661; Sun, 29 Jan 2023 22:05:24 -0800 (PST) ARC-Seal: i=2; a=rsa-sha256; t=1675058724; cv=pass; d=google.com; s=arc-20160816; b=s2Y6uSzVbSh1u5wEvlJisUDy2g6m5AD4yomOzFBzOR92TA8xD4pV5pNay+FQsktASU Sr4vg6s3FTGWvaM+pcJEprA6n0RRu8AnAyUY7PYQLbWAanrQdZxz0FVlE2M70bdSPU9A 80UM+PouM8nTinUFra2sSnfVk+ZA/C9/0zQiZo6kVGr0x19cfhQE/qNjfNJ43q+hmbub V4O0arj3YnrEJyov3uO0cwKazMcyzVl9JuYKKfLv/luJw2ZxBg88ulKxu9b3CWELCoay riEcziaVTeVSz5/6gkHA3jSWAaAOci86waoIQ5ToE2UIo5tDTVj5XLb8TLjGy76cGhv5 23VQ== ARC-Message-Signature: i=2; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:content-transfer-encoding:mime-version :references:in-reply-to:message-id:date:subject:cc:to:from :dkim-signature; bh=u3t70GHC+KZ9uqeaeknYCgT+u2wTzp8TF0kraXSY3dc=; b=J032qmBDZPQ45QqJI24rzRQfCWDTQsFUisuefHEUiXJYa57ZbRavu725Zs6kIydS3y McNxrUgmXfPlKX2H/uPB9QpC6dTsfmTPZgc0Ga97b73TZGs3OZr0s0d/oMKxTgtwRBsR 4S1wxTS8ex3xxiA8ZoA62ACYF6RNR8pvAap6TC6zsQBItjN6Q/I03nND3Kp1Lk20S8Wi ilU8gxcuMp/3FOzfmWYpQsDak853NLD7+W2rsgRG8I5ug/8zz4IGl7uPxQrYVusvxP4O WurlYPZhK/6aqfL8NN2Hiti0MPcnC/W2cmZiWDAargBvXjtkXtN6r7WB/8xNEoc+E5S/ N7RA== ARC-Authentication-Results: i=2; mx.google.com; dkim=pass header.i=@amd.com header.s=selector1 header.b=djxVCKrh; arc=pass (i=1 spf=pass spfdomain=amd.com dmarc=pass fromdomain=amd.com); spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=QUARANTINE sp=QUARANTINE dis=NONE) header.from=amd.com Received: from out1.vger.email (out1.vger.email. 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Mon, 30 Jan 2023 00:00:59 -0600 From: Sandipan Das To: , , CC: , , , , , , , , , , , , , , , , Subject: [PATCH v3 2/2] perf session: Show branch speculation info in raw dump Date: Mon, 30 Jan 2023 11:29:16 +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: DM6NAM11FT025:EE_|SN7PR12MB6929:EE_ X-MS-Office365-Filtering-Correlation-Id: 239335b3-4377-442f-6b6d-08db02877aa8 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)(39860400002)(346002)(136003)(376002)(396003)(451199018)(40470700004)(46966006)(36840700001)(4326008)(41300700001)(8676002)(40480700001)(6666004)(110136005)(8936002)(316002)(70586007)(54906003)(5660300002)(70206006)(7416002)(44832011)(83380400001)(40460700003)(36756003)(36860700001)(81166007)(7696005)(2906002)(26005)(186003)(16526019)(478600001)(2616005)(86362001)(426003)(336012)(47076005)(356005)(82740400003)(82310400005)(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"