From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-yw1-f172.google.com (mail-yw1-f172.google.com [209.85.128.172]) (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 0E78F3B2FCD for ; Sun, 6 Sep 2026 16:06:48 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.128.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788710810; cv=none; b=DhCRcPDKhcUrMWZ5gae6naRvWZsFJMmp0L+wPsgOrt+MQ35OYcL5JsvYmHCSwhQaST5RR5UkGzT+U6oi38cMBKcmqu7Dopynbms9VW2MD48slK7OxIufdRY59rKOneTvla1f/5In/sUKP2+hbDUw4pHOhWtIbbqk4+Iv/8tjKEk= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788710810; c=relaxed/simple; bh=8CvFHtfn4Ljqx5Fa6L2b6SNfX914djxML7DsfBsaOO4=; h=From:Date:Subject:MIME-Version:Content-Type:Message-Id:References: In-Reply-To:To:Cc; b=FfpD9v7ZN1xrMZHMS9rK1MNz0k3f5esLfzAA90x2WppUESls5gUo3MLb8YtHSnVbomi/Dg95I3HpMM4B/stUpgyaJusXJJTSLUjDmRzq2J2cZnc6JfeCdezlb9lCNaW4qOLmKFoH/H2oZB6EKc3bLJhUkwy9P1XC1+mJPefaCpw= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=b0UdnlA1; arc=none smtp.client-ip=209.85.128.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="b0UdnlA1" Received: by mail-yw1-f172.google.com with SMTP id 00721157ae682-855c26cf490so18205127b3.0 for ; Sun, 06 Sep 2026 09:06:48 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1788710808; x=1789315608; darn=vger.kernel.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :content-type:mime-version:subject:date:from:from:to:cc:subject:date :message-id:reply-to:content-type; bh=e9O0Uei0AmYGxnrMfKSWfJBNUDOym4vtr5Ws3/LSEZc=; b=b0UdnlA1i7u62AydPIu0wrFzSJ7OQ1+MOC4b8vkYeQHj7QEuOQI4qjmNsOZskPCU8N 4/J7362MkX3tAq3VhcIepPS3k505WQSp7ysUOcsUl9T/roFFpWFNb1Aeoik856h1NcHr yXcL6aC9f7x/PboOkIAIiWtdha2yOMxIUS0/PLjN7nsZLk+wj6X9qY6XuZy3JDVJNB8a iUldX89wE4teHR92KdtchdD6Unk9fv8XScEdOJ55bNrrOWLuqG6DmjCKrllbOABkLrA/ +mSmEkYaUuMnp8jUtr5IMInv1Q6/hwvOsZo7yhXnKxGSmtERJbL7qgUoyvWaS0fUVyHT dHlw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1788710808; x=1789315608; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :content-type:mime-version:subject:date:from:x-gm-gg :x-gm-message-state:from:to:cc:subject:date:message-id:reply-to :content-type; bh=e9O0Uei0AmYGxnrMfKSWfJBNUDOym4vtr5Ws3/LSEZc=; b=A9OrGukdSRVe+NOVf7weYckpPd8HyWtofR1xH4QHyVdq4252+T8SjwxDHXNuy2//IY knlBgxSFBHjM99RHpC4X8X+k7Se5h2euO/l8ea050di5X1JhCun1so0t8V3Vqemg7Pbf xktdFvSyHRlKWci/ziSe1TN1y4Jp/PH2CpjV+/gZvkv0gC4mubMcoonUPL+bR6NCPXe+ 4UxTT2rQcfis0aU3Z9rA3kzdqR3M4TXN9HEaAgY4auaQww25FE2Us/am2yVp1dWv17k8 PgoACtjbRRB747julgq7nXtQ7EUOIKdgKjVxJouTOWRaD/tJlmjY0hyRjvr4diKG8F0D lThw== X-Gm-Message-State: AFuF++mJ50Q96kEtWLzFzguu/eIbB3l4ZR4LpoaCSDkFyy/gqdzDLF9k mAJzUf7jO8JimKzh87SHjBGQLYUd5CZkGwi+Y0R4MD+shL0A7ln/4dOO X-Gm-Gg: AYBFou0uZuhCao3vZyZMJnT02WfpU+Y6IeiEUoObGhonG/So1U7eTC8SNOxXvBrvbQb W/dTG0yQAQxGpRYQiZGJveIePNonhyNK25TpVcVDG7PlKp5GpurYNY++0Us0lgSFZVDe9jRqYDl T/Dx4K98tgnk99UMfbk8OnG3j3lbiLlDWtuw2zQyK0HPnt+OY/KmMsuDrrjW9HRzzMGKkIHI1JI wKCp8cN208QpT1zyP7HPK3R6S+AIrzAR+pEV0UDgBfElZgb2/JkNEad4Tdr7XFNnaBgy1Y6Xu5+ WY8L7pdJGXvQUENI78HAoG+NQxieIWMv3iHuAkCKK5O6A66yI3dNU23iRJSHj6wO0mnmAsvty+i KI1WDu8+VMWDRazw/FFYIqVXvzp81O8TsTdYDTyv6HhKJ44lCmV5I6gta64AvVQMz2B5CB74f2M S5Y8jYIrNOhsUW88RTq8BF2cml0U9/QV0jV3Iwi3eChe63jBgaKDlapETdhHIv X-Received: by 2002:a05:690c:c6d0:b0:873:5ddf:d874 with SMTP id 00721157ae682-8735ddfda9emr27184317b3.63.1788710807793; Sun, 06 Sep 2026 09:06:47 -0700 (PDT) Received: from localhost ([2600:1702:7a90:6f9f:8bc4:8aec:108d:7a04]) by smtp.gmail.com with ESMTPSA id 00721157ae682-8714c0e5c6fsm57754457b3.48.2026.09.06.09.06.46 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 06 Sep 2026 09:06:46 -0700 (PDT) From: Matt Turner Date: Sun, 06 Sep 2026 12:06:43 -0400 Subject: [PATCH v3 2/2] perf tools: make the GTK4 report browser actually loadable at runtime Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 7bit Message-Id: <20260906-perf-gtk2-v3-2-e1f2086214a0@gmail.com> References: <20260906-perf-gtk2-v3-0-e1f2086214a0@gmail.com> In-Reply-To: <20260906-perf-gtk2-v3-0-e1f2086214a0@gmail.com> To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Ian Rogers , Adrian Hunter , James Clark Cc: linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, bpf@vger.kernel.org, Matt Turner X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=4031; i=mattst88@gmail.com; h=from:subject:message-id; bh=8CvFHtfn4Ljqx5Fa6L2b6SNfX914djxML7DsfBsaOO4=; b=owGbwMvMwCW25rVmCc8sv+mMp9WSGLLm9k/yW8VW37RnaZlKRnHbITP5s2v2nnm7ql7eOethZ dhltutWHR9ZGMS4GGaKKbLErVdkmdW2Y6nPaelfMHNYmUCGSIs0MAABCwNfbmJeqZGOkZ6ptqGe IZChYxQPkdNj0MgsLi5NLdJNKyhyyMsvSSzJzM8r1ssvSM0rSC/QS8tMK8nIyC8qTgUaoZeXWmL q6uhmZGhgYuloYeZk4Whq4uzsZOjk5ujo7OpkZGluYuBs6WjiamnOwMUpAHNN7gJGhjsnLzlPyx Th/Pj/d/iZlcYmjDuKJc9M9Hwg82XxtntvH+Uz/LO91Ln8gHbGx1X9O/J9mXf901h+xpvby09g2 vGm3Bf6lYwA X-Developer-Key: i=mattst88@gmail.com; a=openpgp; fpr=3BB639E56F861FA2E86505690FDD682D974CA72A perf report --gtk dlopen()s libperf-gtk.so and expects it to resolve symbols back against the running perf binary (callchain_param, symbol_conf, evsel__name, and friends all live in perf itself, not in the plugin). Two things stood in the way of that after the GTK 2 to GTK 4 port: perf never passed -rdynamic, so none of its own symbols were in its dynamic symbol table for a dlopen()ed plugin to find at all. Add -rdynamic to LDFLAGS when GTK4 support is enabled. annotated_source__hist_entry() was a static inline in annotate.h, so ui/gtk/annotate.c calling it pulled hashmap__find()'s expansion, hashmap_find(), directly into libperf-gtk.so as an undefined symbol. The only hashmap_find perf links against in the common case is libbpf's internal one (tools/lib/bpf/hashmap.c), which libbpf compiles with -fvisibility=hidden; a hidden symbol can never be exported to a dlopen()ed plugin no matter what LDFLAGS perf itself gets. Move annotated_source__hist_entry() out of the header and into annotate.c, as an ordinary exported function, so the plugin depends on it the same way it already depends on evsel__group_desc() and friends, instead of reaching for hashmap_find directly. With both fixes, a default 'make GTK4=1' build (libbpf statically linked, as usual) can dlopen() libperf-gtk.so and open the report browser without needing NO_LIBBPF=1 or manual LDFLAGS. Verified with perf report --gtk against a real perf.data on an actual GTK4 desktop session. Signed-off-by: Matt Turner --- tools/perf/Makefile.config | 5 +++++ tools/perf/util/annotate.c | 11 +++++++++++ tools/perf/util/annotate.h | 12 ++---------- 3 files changed, 18 insertions(+), 10 deletions(-) diff --git a/tools/perf/Makefile.config b/tools/perf/Makefile.config index 3e59e2b7eaec..4ee7393a39f9 100644 --- a/tools/perf/Makefile.config +++ b/tools/perf/Makefile.config @@ -785,6 +785,11 @@ ifdef GTK4 GTK_CFLAGS += $(shell $(PKG_CONFIG) --cflags gtk4 2>/dev/null) GTK_LIBS := $(shell $(PKG_CONFIG) --libs gtk4 2>/dev/null) EXTLIBS += -ldl + # libperf-gtk.so is dlopen()ed at runtime and calls back into + # symbols defined in the perf binary itself (callchain_param, + # symbol_conf, evsel__name, ...): perf needs to export those + # dynamically for the plugin to resolve them. + LDFLAGS += -rdynamic endif endif diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c index df70e95a8470..123b6d5fcea7 100644 --- a/tools/perf/util/annotate.c +++ b/tools/perf/util/annotate.c @@ -145,6 +145,17 @@ static int annotated_source__alloc_histograms(struct annotated_source *src, return src->histograms ? 0 : -1; } +struct sym_hist_entry * +annotated_source__hist_entry(struct annotated_source *src, const struct evsel *evsel, u64 offset) +{ + struct sym_hist_entry *entry; + long key = offset << 16 | evsel->core.idx; + + if (!hashmap__find(src->samples, key, &entry)) + return NULL; + return entry; +} + void symbol__annotate_zero_histograms(struct symbol *sym) { struct annotation *notes = symbol__annotation(sym); diff --git a/tools/perf/util/annotate.h b/tools/perf/util/annotate.h index fa08d09b80f7..40038a3779d4 100644 --- a/tools/perf/util/annotate.h +++ b/tools/perf/util/annotate.h @@ -406,16 +406,8 @@ static inline struct sym_hist *annotation__histogram(struct annotation *notes, return annotated_source__histogram(notes->src, evsel); } -static inline struct sym_hist_entry * -annotated_source__hist_entry(struct annotated_source *src, const struct evsel *evsel, u64 offset) -{ - struct sym_hist_entry *entry; - long key = offset << 16 | evsel->core.idx; - - if (!hashmap__find(src->samples, key, &entry)) - return NULL; - return entry; -} +struct sym_hist_entry * +annotated_source__hist_entry(struct annotated_source *src, const struct evsel *evsel, u64 offset); static inline struct annotation *symbol__annotation(struct symbol *sym) { -- 2.54.0