From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f71.google.com (mail-pj1-f71.google.com [209.85.216.71]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8092E3EC687 for ; Wed, 16 Sep 2026 06:53:00 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.71 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789541581; cv=none; b=A/cguTUo04b/XMSUFvqB5TX6rTGacji52NdGnZw8qUdgOZihnCVT48IQ6ktneBHX75cDEZNh6RmNilfB86x5gt17f830hj6ui4W/uiXQZdUWZCczti5WHeIg4pRE2LhiN9sZjys1+wCNEFMs7BYnN3Kb0LpAg0jmnCuAbggi3sk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789541581; c=relaxed/simple; bh=SPjvDE33SP3107t0m50rVcbULq9SBmWFFa6eifsusuU=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=f2OCt5uZTieOcHFFffP1B8yFrwqoQXlUz+JdMfCksU61wHbiXFKDrm6fgb/wK4vIqm+bw+Q7eDaPF5Soo4buPDH7g0B7rVFfy2mUsvwZYULx+UBX5iHt0wMq9WybRmJwF/PnkM0U2bspxXgUmRIjZGsh8bWS4/FkBl92Cha1eAU= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b=T0OiFmlZ; arc=none smtp.client-ip=209.85.216.71 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=flex--irogers.bounces.google.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=google.com header.i=@google.com header.b="T0OiFmlZ" Received: by mail-pj1-f71.google.com with SMTP id 98e67ed59e1d1-39e18af9f48so1428262a91.1 for ; Tue, 15 Sep 2026 23:53:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20251104; t=1789541580; x=1790146380; darn=vger.kernel.org; h=content-type:cc:to:from:subject:message-id:references:mime-version :in-reply-to:date:from:to:cc:subject:date:message-id:reply-to :content-type; bh=XiWRLL3r7FPvPXSArVph/Q3qGT3wbMpgFpFrlHz/wZU=; b=T0OiFmlZyS7eAaAF2eQWTyfwwUc2P5GwE2E8lfXINNB0ULZohvXnTiSiQLNmF4ZJgY L1QDJVV4cJyyzgDs4GJdmZqHhksuMB69NA/fDQF+oe+iqduAqfSps9qgnFvkTcaS7wyC 3zDAscgUlrTE4+Cv1KMz4mAd85sBzXWgz17PNEdBP/iGMHwZzS/qfRX5M6gPLNKvmv9k OBfvaLN0xBCIXPrFFbCCkhgon0IAfTJ9I6mRChYFz/o/VMH5e+ppa9a77Eb3tbwtWoiC 6ONCX+Y4sF37As0eJdcecaTcYRkc0S7h1T6Qe6Q3i09VmLgZnZaRpr31rej4+3pfqlMH TBpg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1789541580; x=1790146380; h=content-type:cc:to:from:subject:message-id:references:mime-version :in-reply-to:date:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=XiWRLL3r7FPvPXSArVph/Q3qGT3wbMpgFpFrlHz/wZU=; b=cBhRoemHdvvu/1AcoWPyfFYcNWEKIftD2BONE1bj4sJu6AZvMOnD7AmbLmfe75/NfB NxA+m8KQ4oxMViPCmg4t/7lbuDqRLBaosAK3XcJupAX8Mtca9TePYW54zDic2bXRfqiL tUgYV1w8HRdrceNsR4P8zARFFnAJh370pKXsV3cHst2RTfJuUTwCgvYWV4qfyoXBunq4 7BmhXoholFNh8ZpSxZDQ9BJOiK9bMgVbcGuFCqOXe1qOlQaDAxgueVxZkrU4HHbr2i+y fX8ylwbOG7XpabWle9Dc82pwBp8rYBbKnUaxsBIW5fEx7x0GUOJ+HAXJE76SY+NfNZwj QTiw== X-Gm-Message-State: AFuF++nGt3lXULkayDuUjopkaYKz61lla5nM4SuFLeDkbr7iOTy1Pasy elj5uJHGnEInWWOGGeR0ZoVyJwII0tFMPBG66K/fPQWWvlgSt9e6Mn1CaIZJv26jfAp5LAVGITu 8Jy0dp6NpWQ== X-Received: from dlep14-n2.prod.google.com ([2002:a05:701b:458e:20b0:143:9704:de05]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:4a49:b0:396:d28e:b53 with SMTP id 98e67ed59e1d1-39dfe188d2dmr10470245a91.20.1789541579678; Tue, 15 Sep 2026 23:52:59 -0700 (PDT) Date: Tue, 15 Sep 2026 23:52:42 -0700 In-Reply-To: <20260916065248.3153556-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-perf-users@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20260916065248.3153556-1-irogers@google.com> X-Mailer: git-send-email 2.55.0.1032.g73a4cd73de-goog Message-ID: <20260916065248.3153556-4-irogers@google.com> Subject: [PATCH v2 3/9] perf tools: Expose opt-in --hybrid-merge From: Ian Rogers To: irogers@google.com, acme@kernel.org, ak@kernel.org, ak@linux.intel.com, andi@firstfloor.org, namhyung@kernel.org Cc: linux-perf-users@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Add --hybrid-merge to perf report and perf top. It merges the events a wildcard expanded to across the core PMUs, and their histograms, so that a symbol which ran on more than one kind of core is reported once with the total rather than once per PMU. evlist__merge_hybrid() links the events and evlist__merge_hists_hybrid() links the histograms. There is nothing to merge on a machine with a single core PMU, or when the events didn't come from a wildcard, so warn in that case rather than quietly producing an unmerged report. Merging collapses the per-PMU entries into one set, which doesn't combine with the per-level breakdown of --hierarchy, so asking for both is an error. Signed-off-by: Ian Rogers Assisted-by: Antigravity:gemini-3.1-pro --- tools/perf/Documentation/perf-report.txt | 5 +++++ tools/perf/Documentation/perf-top.txt | 5 +++++ tools/perf/builtin-report.c | 19 +++++++++++++++++++ tools/perf/builtin-top.c | 17 +++++++++++++++++ tools/perf/util/symbol.c | 1 + 5 files changed, 47 insertions(+) diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt index 1a4706329c6c..3718ebd297ce 100644 --- a/tools/perf/Documentation/perf-report.txt +++ b/tools/perf/Documentation/perf-report.txt @@ -578,6 +578,11 @@ include::itrace.txt[] --raw-trace:: When displaying traceevent output, do not use print fmt or plugins. +--hybrid-merge:: + Merge matching events from all hybrid core PMUs into one + display. For example, if a wildcard expands to run on both p-cores and + e-cores, this aggregates them into a single view. + -H:: --hierarchy:: Enable hierarchical output. In the hierarchy mode, each sort key groups diff --git a/tools/perf/Documentation/perf-top.txt b/tools/perf/Documentation/perf-top.txt index 2da2a16bbf26..c5e96da6ed82 100644 --- a/tools/perf/Documentation/perf-top.txt +++ b/tools/perf/Documentation/perf-top.txt @@ -49,6 +49,11 @@ Default is to monitor all CPUS. encoding with the layout of the event control registers as described by entries in /sys/bus/event_source/devices/cpu/format/*. +--hybrid-merge:: + Merge matching events from all hybrid core PMUs into one + display. For example, if a wildcard expands to run on both p-cores and + e-cores, this aggregates them into a single view. + --filter=:: Event filter. This option should follow an event selector (-e). For syntax see linkperf:perf-record[1]. diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c index 279e61c2366c..bda4836fc524 100644 --- a/tools/perf/builtin-report.c +++ b/tools/perf/builtin-report.c @@ -1114,6 +1114,17 @@ static int __cmd_report(struct report *rep) evlist__for_each_entry(session->evlist, pos) rep->nr_entries += evsel__hists(pos)->nr_entries; + if (symbol_conf.hybrid_merge) { + struct perf_env *env = perf_session__env(session); + + if (evlist__can_merge_hybrid(session->evlist, env)) { + evlist__merge_hybrid(session->evlist, env); + evlist__merge_hists_hybrid(session->evlist, false); + } else { + ui__warning("--hybrid-merge: no events to merge across core PMUs\n"); + } + } + if (use_browser == 0) { if (verbose > 3) perf_session__fprintf(session, stdout); @@ -1449,6 +1460,8 @@ int cmd_report(int argc, const char **argv) parse_branch_mode), OPT_BOOLEAN(0, "branch-history", &branch_call_mode, "add last branch records to call history"), + OPT_BOOLEAN(0, "hybrid-merge", &symbol_conf.hybrid_merge, + "merge the same event across hybrid core PMUs"), OPT_STRING(0, "objdump", &objdump_path, "path", "objdump binary to use for disassembly and annotations"), OPT_STRING(0, "addr2line", &addr2line_path, "path", @@ -1548,6 +1561,12 @@ int cmd_report(int argc, const char **argv) report.symbol_filter_str = argv[0]; } + if (symbol_conf.report_hierarchy && symbol_conf.hybrid_merge) { + pr_err("Error: --hierarchy and --hybrid-merge are mutually exclusive.\n"); + ret = -EINVAL; + goto exit; + } + if (disassembler_style) { annotate_opts.disassembler_style = strdup(disassembler_style); if (!annotate_opts.disassembler_style) diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index c2562d49be46..3bb3337f1244 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -1336,6 +1336,15 @@ static int __cmd_top(struct perf_top *top) if (!target__none(&opts->target)) evlist__enable(top->evlist); + if (symbol_conf.hybrid_merge) { + if (evlist__can_merge_hybrid(top->evlist, /*env=*/NULL)) { + evlist__merge_hybrid(top->evlist, /*env=*/NULL); + evlist__merge_hists_hybrid(top->evlist, false); + } else { + ui__warning("--hybrid-merge: no events to merge across core PMUs\n"); + } + } + ret = -1; if (pthread_create(&thread_process, NULL, process_thread, top)) { ui__error("Could not create process thread.\n"); @@ -1491,6 +1500,8 @@ int cmd_top(int argc, const char **argv) OPT_CALLBACK('e', "event", &parse_events_option_args, "event", "event selector. use 'perf list' to list available events", parse_events_option), + OPT_BOOLEAN(0, "hybrid-merge", &symbol_conf.hybrid_merge, + "merge the same event across hybrid core PMUs"), OPT_CALLBACK(0, "filter", &top.evlist, "filter", "event filter", parse_filter), OPT_U64('c', "count", &opts->user_interval, "event period to sample"), @@ -1679,6 +1690,12 @@ int cmd_top(int argc, const char **argv) if (argc) usage_with_options(top_usage, options); + if (symbol_conf.report_hierarchy && symbol_conf.hybrid_merge) { + pr_err("Error: --hierarchy and --hybrid-merge are mutually exclusive.\n"); + status = -EINVAL; + goto out_put_evlist; + } + if (disassembler_style) { annotate_opts.disassembler_style = strdup(disassembler_style); if (!annotate_opts.disassembler_style) { diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index 3206929473a2..163652f071c6 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -74,6 +74,7 @@ struct symbol_conf symbol_conf = { .symfs = "", .symfs_layout_flat = false, .event_group = true, + .hybrid_merge = false, .inline_name = true, .res_sample = 0, .addr2line_timeout_ms = 5 * 1000, -- 2.55.0.1032.g73a4cd73de-goog