From patchwork Tue Mar 7 23:33:05 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Namhyung Kim X-Patchwork-Id: 13164944 X-Patchwork-Delegate: bpf@iogearbox.net Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 69272C6FA99 for ; Tue, 7 Mar 2023 23:33:28 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229972AbjCGXdZ (ORCPT ); Tue, 7 Mar 2023 18:33:25 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:43910 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229966AbjCGXdX (ORCPT ); Tue, 7 Mar 2023 18:33:23 -0500 Received: from mail-pg1-x536.google.com (mail-pg1-x536.google.com [IPv6:2607:f8b0:4864:20::536]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0B97C76F54; Tue, 7 Mar 2023 15:33:22 -0800 (PST) Received: by mail-pg1-x536.google.com with SMTP id z10so8620708pgr.8; Tue, 07 Mar 2023 15:33:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; t=1678232001; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:sender:from:to:cc:subject:date :message-id:reply-to; bh=BSYFKW/f4cBllB72XD0Anmg2JAAmUIvfnX1lH/HWE8g=; b=PXqbxPmcykJazCAipqVop4Vgq8LFaDno2vr4y2dpXqgZLGMST1LwAAKXtuauhxZkJ9 e6WqoK7uW8mwFtLjywvT8CYkLGlkYacHiJ4vnEQg97U7q4lPZbpj4nTWWB3AJG6j9/XF icw9rojoLATo22XQv0BjhFOilzpu/B5lIWmY33ltkUXtF+kPmu7fqnyF6O7jZcHfZmPN 2/Q9HM1Ra4bT6iCCy5ZzsY+D7IDtgq9bXPkSoeVRAZOBnDuXXtrySJuqRTB7GttMKMEi +7zpfdQPW35xe7FT7fnhuejXIYWFYKTSgbhm2hWcnflbNkkU1O9gE9lPPQkNCxx+ZypK 4DSA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; t=1678232001; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:sender:x-gm-message-state:from :to:cc:subject:date:message-id:reply-to; bh=BSYFKW/f4cBllB72XD0Anmg2JAAmUIvfnX1lH/HWE8g=; b=G2GOD2XagFFs80oWuvfS9iaJu6/tBxaTOY7N/BbLIfodeHj7JZDCYNt3lAVi7GO+oY Gfe4ut3CkUIxBlZqak8xEWJiZRFbE7uOZRV0ydL2RM9yS9upfH9xIZ/8sjszrkmLVQUN N+9EvxGzsKw95OYkbc7QXDa1rzNrBOt4n9oL4nVbgdbRNnQPtNcIXNc24hlhkcOat2l8 l/Qx5QJxAI8JbwNAgr9qQ0Q7T5YGlk777PWq6HBlaWns2NkmY+FL+zO7XizaME4XA8HU GJ2Q0OIFv/+9DDSlwP3mKwsRApLtiiiVJTrrSNVbcRvqCV7At853CBjmoFHGfxdi04nH BRQQ== X-Gm-Message-State: AO0yUKXWL8V8t8WZQiO2CbydhiKQCSs5pJNCMz++CjKmoZ28E3GGLH6n HjokW+Q++pp3yUpI2ZxpmG4= X-Google-Smtp-Source: AK7set/yygdmTl2Ud7hNbNr8heUCT5ybTO6ZS2vMDtheV59zz2PQDvMkTyDGtoXM8bOHMPfehAnlfQ== X-Received: by 2002:aa7:941d:0:b0:5f1:f57a:b0c3 with SMTP id x29-20020aa7941d000000b005f1f57ab0c3mr14936637pfo.5.1678232001457; Tue, 07 Mar 2023 15:33:21 -0800 (PST) Received: from moohyul.svl.corp.google.com ([2620:15c:2d4:203:15e8:b801:cd55:a496]) by smtp.gmail.com with ESMTPSA id l11-20020a62be0b000000b005da23d8cbffsm8342217pff.158.2023.03.07.15.33.19 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 07 Mar 2023 15:33:20 -0800 (PST) Sender: Namhyung Kim From: Namhyung Kim To: Arnaldo Carvalho de Melo , Jiri Olsa Cc: Peter Zijlstra , Ingo Molnar , Ian Rogers , Adrian Hunter , Andi Kleen , Kan Liang , Song Liu , Stephane Eranian , Ravi Bangoria , Leo Yan , James Clark , Hao Luo , LKML , linux-perf-users@vger.kernel.org, bpf@vger.kernel.org Subject: [PATCH 5/9] perf bpf filter: Add 'pid' sample data support Date: Tue, 7 Mar 2023 15:33:05 -0800 Message-Id: <20230307233309.3546160-6-namhyung@kernel.org> X-Mailer: git-send-email 2.40.0.rc1.284.g88254d51c5-goog In-Reply-To: <20230307233309.3546160-1-namhyung@kernel.org> References: <20230307233309.3546160-1-namhyung@kernel.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: bpf@vger.kernel.org The pid is special because it's saved in the PERF_SAMPLE_TID together. So it needs to differenciate tid and pid using the 'part' field in the perf bpf filter entry struct. Acked-by: Jiri Olsa Signed-off-by: Namhyung Kim --- tools/perf/util/bpf-filter.c | 4 +++- tools/perf/util/bpf-filter.h | 3 ++- tools/perf/util/bpf-filter.l | 11 ++++++++++- tools/perf/util/bpf-filter.y | 7 +++++-- tools/perf/util/bpf_skel/sample-filter.h | 3 ++- tools/perf/util/bpf_skel/sample_filter.bpf.c | 5 ++++- 6 files changed, 26 insertions(+), 7 deletions(-) diff --git a/tools/perf/util/bpf-filter.c b/tools/perf/util/bpf-filter.c index 7bd6f2e41513..743c69fd6cd4 100644 --- a/tools/perf/util/bpf-filter.c +++ b/tools/perf/util/bpf-filter.c @@ -36,6 +36,7 @@ int perf_bpf_filter__prepare(struct evsel *evsel) list_for_each_entry(expr, &evsel->bpf_filters, list) { struct perf_bpf_filter_entry entry = { .op = expr->op, + .part = expr->part, .flags = expr->sample_flags, .value = expr->val, }; @@ -76,7 +77,7 @@ u64 perf_bpf_filter__lost_count(struct evsel *evsel) return skel ? skel->bss->dropped : 0; } -struct perf_bpf_filter_expr *perf_bpf_filter_expr__new(unsigned long sample_flags, +struct perf_bpf_filter_expr *perf_bpf_filter_expr__new(unsigned long sample_flags, int part, enum perf_bpf_filter_op op, unsigned long val) { @@ -85,6 +86,7 @@ struct perf_bpf_filter_expr *perf_bpf_filter_expr__new(unsigned long sample_flag expr = malloc(sizeof(*expr)); if (expr != NULL) { expr->sample_flags = sample_flags; + expr->part = part; expr->op = op; expr->val = val; } diff --git a/tools/perf/util/bpf-filter.h b/tools/perf/util/bpf-filter.h index f0c66764c6d0..3f8827bd965f 100644 --- a/tools/perf/util/bpf-filter.h +++ b/tools/perf/util/bpf-filter.h @@ -9,6 +9,7 @@ struct perf_bpf_filter_expr { struct list_head list; enum perf_bpf_filter_op op; + int part; unsigned long sample_flags; unsigned long val; }; @@ -16,7 +17,7 @@ struct perf_bpf_filter_expr { struct evsel; #ifdef HAVE_BPF_SKEL -struct perf_bpf_filter_expr *perf_bpf_filter_expr__new(unsigned long sample_flags, +struct perf_bpf_filter_expr *perf_bpf_filter_expr__new(unsigned long sample_flags, int part, enum perf_bpf_filter_op op, unsigned long val); int perf_bpf_filter__parse(struct list_head *expr_head, const char *str); diff --git a/tools/perf/util/bpf-filter.l b/tools/perf/util/bpf-filter.l index f6c0b74ea285..ec12fc4d2ab8 100644 --- a/tools/perf/util/bpf-filter.l +++ b/tools/perf/util/bpf-filter.l @@ -11,7 +11,15 @@ static int sample(unsigned long sample_flag) { - perf_bpf_filter_lval.sample = sample_flag; + perf_bpf_filter_lval.sample.type = sample_flag; + perf_bpf_filter_lval.sample.part = 0; + return BFT_SAMPLE; +} + +static int sample_part(unsigned long sample_flag, int part) +{ + perf_bpf_filter_lval.sample.type = sample_flag; + perf_bpf_filter_lval.sample.part = part; return BFT_SAMPLE; } @@ -56,6 +64,7 @@ ident [_a-zA-Z][_a-zA-Z0-9]+ ip { return sample(PERF_SAMPLE_IP); } id { return sample(PERF_SAMPLE_ID); } tid { return sample(PERF_SAMPLE_TID); } +pid { return sample_part(PERF_SAMPLE_TID, 1); } cpu { return sample(PERF_SAMPLE_CPU); } time { return sample(PERF_SAMPLE_TIME); } addr { return sample(PERF_SAMPLE_ADDR); } diff --git a/tools/perf/util/bpf-filter.y b/tools/perf/util/bpf-filter.y index 13eca612ecca..0ca6532afd8d 100644 --- a/tools/perf/util/bpf-filter.y +++ b/tools/perf/util/bpf-filter.y @@ -20,7 +20,10 @@ static void perf_bpf_filter_error(struct list_head *expr __maybe_unused, %union { unsigned long num; - unsigned long sample; + struct { + unsigned long type; + int part; + } sample; enum perf_bpf_filter_op op; struct perf_bpf_filter_expr *expr; } @@ -48,7 +51,7 @@ filter_term filter_term: BFT_SAMPLE BFT_OP BFT_NUM { - $$ = perf_bpf_filter_expr__new($1, $2, $3); + $$ = perf_bpf_filter_expr__new($1.type, $1.part, $2, $3); } %% diff --git a/tools/perf/util/bpf_skel/sample-filter.h b/tools/perf/util/bpf_skel/sample-filter.h index 862060bfda14..6b9fd554ad7b 100644 --- a/tools/perf/util/bpf_skel/sample-filter.h +++ b/tools/perf/util/bpf_skel/sample-filter.h @@ -17,7 +17,8 @@ enum perf_bpf_filter_op { /* BPF map entry for filtering */ struct perf_bpf_filter_entry { enum perf_bpf_filter_op op; - __u64 flags; + __u32 part; /* sub-sample type info when it has multiple values */ + __u64 flags; /* perf sample type flags */ __u64 value; }; diff --git a/tools/perf/util/bpf_skel/sample_filter.bpf.c b/tools/perf/util/bpf_skel/sample_filter.bpf.c index c07256279c3e..dddf38c27bb7 100644 --- a/tools/perf/util/bpf_skel/sample_filter.bpf.c +++ b/tools/perf/util/bpf_skel/sample_filter.bpf.c @@ -40,7 +40,10 @@ static inline __u64 perf_get_sample(struct bpf_perf_event_data_kern *kctx, case PERF_SAMPLE_ID: return kctx->data->id; case PERF_SAMPLE_TID: - return kctx->data->tid_entry.tid; + if (entry->part) + return kctx->data->tid_entry.pid; + else + return kctx->data->tid_entry.tid; case PERF_SAMPLE_CPU: return kctx->data->cpu_entry.cpu; case PERF_SAMPLE_TIME: