From nobody Fri Dec 19 17:28:36 2025 Received: from mail-pf1-f201.google.com (mail-pf1-f201.google.com [209.85.210.201]) (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 D1037268688 for ; Wed, 30 Apr 2025 17:51:56 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746035518; cv=none; b=Ega0QzLR/HL7wizpoWLi6Oh8jqS+EtwgMBHBU0ItN3WINgK0l4TafnkCFDzdXwPDWhskvIbUqItFTIZaEdH/WT44pqVYQliFORwXlTvU3jqlLPr6Aqq97XxDrm9dqt7vFSrs1BX3enmg0oOvJpJQVu8nBotE3BdiItDPJ4pvcJQ= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1746035518; c=relaxed/simple; bh=9l2dMOM7UimoBEXqUwjoRi9BOwrL79JE0K1FOZ1eTn0=; h=Date:In-Reply-To:Mime-Version:References:Message-ID:Subject:From: To:Cc:Content-Type; b=C5MyoubHfpRACQftCMehhIa8iz8iwegsbX0YD+eFTK7jqz+3PteLN93TaSUkzBqr0i5fJHQTIQeQ9FjmXSFNHZVVm0etLhXsBiqoa62bPe0CqeJ3AoiQN9bE1hZFcq3eo8uNMj1ZI8kyGUh1i2pfHhXXuBQhJi7uUwaX4eV9EZc= 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=G0h3BZMY; arc=none smtp.client-ip=209.85.210.201 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="G0h3BZMY" Received: by mail-pf1-f201.google.com with SMTP id d2e1a72fcca58-7395095a505so122335b3a.1 for ; Wed, 30 Apr 2025 10:51:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20230601; t=1746035516; x=1746640316; darn=vger.kernel.org; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=IyLcztOS6ND7VNkEzmFW3p+zRnL5x5BHhQ/NtraX+jQ=; b=G0h3BZMYvR+3hm3gUmIM0t/jZzuDyB3TVvfkuYWFueUNVqlkAYycoUSP2iyPzlXQOQ 9QuuaPoqQwF3qVIe5fTvuE/lEf3w8PcCylNmYP6FtOzJ57YXen6ikWppVb3R7RqR0lv8 v0NEcQLF8UTjATdqjXh/qeCriYBaKm2bT1UWkwqSgjVRkRRdvbxAl2Doq7vCyNuGt3yh a+8oDI0lFRhNmUBOtDaSqMXz8040ujHL2e7S9C74YJE5uxbPCYR7SrJ51IwvtgfsIDGx MAgHIAp66725tS7wcRDfQs94faL0Mu0yZKALwGCpHBJTshLfS27GmAOENujFRaZXOVQ4 3zVw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1746035516; x=1746640316; h=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; bh=IyLcztOS6ND7VNkEzmFW3p+zRnL5x5BHhQ/NtraX+jQ=; b=BqWfmZ6D6hvQLWTQpcnkP+BKne2jJKSUNjFqxA9c6h9Rk2Esvi1PXjPaQ4da+yAHoY K9m/dBOiRmwRrJJYc+liD89kHc+qZP2/8RPbT2Xd5z3CyRfsHX6j50YBzFCz9uIbSvJa fz4R2YvQ2xxVPmLN1BkQJzaldUbXrRBsxDtx08oHPw21qRRQCXJ/yHjL62iBBdRsXWtA Ndx96sm7U8RyaNhoPmVc5HPZo5YE/nTQVKpQ9WJFczz2b2+iX1NWsc0DOwQJ9onSresU H3vNqiMdbl5kG6WdkDYIImsmJ3CR3Rb1qEODR6xqMfnB/+3b2d3rsB9+8mhKqyhmPI5j Cp1w== X-Forwarded-Encrypted: i=1; AJvYcCUqEBoMw6P3r6trjbiTtYAWVnCbEz4jAJd3wmRPpgLp0po1DWE0oMOA8rFOqktLJkVIk6xUvClgNlGM9dQ=@vger.kernel.org X-Gm-Message-State: AOJu0YxIAMkzLefGNtOiGL2bcbXVIGI0jrAnlfOxnvbAAruL0rJ39U0x GgfLr53221W9HwewTwb/Nci4l9VmFBgmABw/UbV6+iiBrqbd9Gcz9Fz3CiAc4rVhDjEUKRcF+4j vjyzWWg== X-Google-Smtp-Source: AGHT+IG/bAJeuyUUIqze0k4zWjdHDhymwu1QrCFfccFUxqYIawKUgDvs/Fgjiy4LZ5RieT7vyM2xLY3z/Lt1 X-Received: from pgam9.prod.google.com ([2002:a05:6a02:2b49:b0:af2:54b0:c8d5]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a21:33a3:b0:1f5:852a:dd81 with SMTP id adf61e73a8af0-20aa41848a9mr5512244637.34.1746035515853; Wed, 30 Apr 2025 10:51:55 -0700 (PDT) Date: Wed, 30 Apr 2025 10:50:17 -0700 In-Reply-To: <20250430175036.184610-1-irogers@google.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: Mime-Version: 1.0 References: <20250430175036.184610-1-irogers@google.com> X-Mailer: git-send-email 2.49.0.906.g1f30a19c02-goog Message-ID: <20250430175036.184610-30-irogers@google.com> Subject: [PATCH v2 29/47] perf lock: Silence -Wshorten-64-to-32 warnings From: Ian Rogers To: Peter Zijlstra , Ingo Molnar , Arnaldo Carvalho de Melo , Namhyung Kim , Mark Rutland , Alexander Shishkin , Jiri Olsa , Adrian Hunter , Kan Liang , Yury Norov , Rasmus Villemoes , Thomas Gleixner , Darren Hart , Davidlohr Bueso , "=?UTF-8?q?Andr=C3=A9=20Almeida?=" , John Garry , Will Deacon , James Clark , Mike Leach , Leo Yan , Yicong Yang , Jonathan Cameron , Nathan Chancellor , Bill Wendling , Justin Stitt , Josh Poimboeuf , Al Viro , Kyle Meyer , Ben Gainey , Athira Rajeev , Kajol Jain , Aditya Gupta , Eder Zulian , Dapeng Mi , Kuan-Wei Chiu , He Zhe , Dirk Gouders , Brian Geffon , Ravi Bangoria , Howard Chu , Charlie Jenkins , Colin Ian King , Dominique Martinet , Jann Horn , Masahiro Yamada , Arnd Bergmann , Yang Jihong , Dmitry Vyukov , Andi Kleen , Graham Woodward , Ilkka Koskinen , Anshuman Khandual , Zhongqiu Han , Hao Ge , Tengda Wu , Gabriele Monaco , Chun-Tse Shao , Casey Chen , "Dr. David Alan Gilbert" , Li Huafei , "Steinar H. Gunderson" , Levi Yun , Weilin Wang , Thomas Falcon , Thomas Richter , Andrew Kreimer , "=?UTF-8?q?Krzysztof=20=C5=81opatowski?=" , Christophe Leroy , Jean-Philippe Romain , Junhao He , "Masami Hiramatsu (Google)" , Xu Yang , Steve Clevenger , Zixian Cai , Stephen Brennan , Yujie Liu , linux-kernel@vger.kernel.org, linux-perf-users@vger.kernel.org, linux-arm-kernel@lists.infradead.org, llvm@lists.linux.dev Cc: Ian Rogers Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" The clang warning -Wshorten-64-to-32 can be useful to catch inadvertent truncation. In some instances this truncation can lead to changing the sign of a result, for example, truncation to return an int to fit a sort routine. Silence the warning by making the implicit truncation explicit. Signed-off-by: Ian Rogers --- tools/perf/builtin-lock.c | 16 ++++++++-------- tools/perf/util/bpf_lock_contention.c | 17 +++++++++-------- 2 files changed, 17 insertions(+), 16 deletions(-) diff --git a/tools/perf/builtin-lock.c b/tools/perf/builtin-lock.c index 05e7bc30488a..0f7e627394aa 100644 --- a/tools/perf/builtin-lock.c +++ b/tools/perf/builtin-lock.c @@ -569,7 +569,7 @@ static int report_lock_acquire_event(struct evsel *evse= l, struct lock_seq_stat *seq; const char *name =3D evsel__strval(evsel, sample, "name"); u64 addr =3D evsel__intval(evsel, sample, "lockdep_addr"); - int flag =3D evsel__intval(evsel, sample, "flags"); + int flag =3D (int)evsel__intval(evsel, sample, "flags"); u64 key; int ret; =20 @@ -837,7 +837,7 @@ static int get_symbol_name_offset(struct map *map, stru= ct symbol *sym, u64 ip, if (offset) return scnprintf(buf, size, "%s+%#lx", sym->name, offset); else - return strlcpy(buf, sym->name, size); + return (int)strlcpy(buf, sym->name, size); } static int lock_contention_caller(struct evsel *evsel, struct perf_sample = *sample, char *buf, int size) @@ -968,7 +968,7 @@ static int report_lock_contention_begin_event(struct ev= sel *evsel, struct thread_stat *ts; struct lock_seq_stat *seq; u64 addr =3D evsel__intval(evsel, sample, "lock_addr"); - unsigned int flags =3D evsel__intval(evsel, sample, "flags"); + unsigned int flags =3D (unsigned int)evsel__intval(evsel, sample, "flags"= ); u64 key; int i, ret; static bool kmap_loaded; @@ -1303,7 +1303,7 @@ static void print_result(void) struct thread *t; =20 /* st->addr contains tid of thread */ - t =3D perf_session__findnew(session, st->addr); + t =3D perf_session__findnew(session, (int)st->addr); name =3D thread__comm_str(t); } =20 @@ -1638,7 +1638,7 @@ static void print_lock_stat_stdio(struct lock_content= ion *con, struct lock_stat fprintf(lock_output, " %10s %s\n", get_type_flags_name(st->flags), st= ->name); break; case LOCK_AGGR_TASK: - pid =3D st->addr; + pid =3D (int)st->addr; t =3D perf_session__findnew(session, pid); fprintf(lock_output, " %10d %s\n", pid, pid =3D=3D -1 ? "Unknown" : thread__comm_str(t)); @@ -1691,7 +1691,7 @@ static void print_lock_stat_csv(struct lock_contentio= n *con, struct lock_stat *s fprintf(lock_output, "\n"); break; case LOCK_AGGR_TASK: - pid =3D st->addr; + pid =3D (int)st->addr; t =3D perf_session__findnew(session, pid); fprintf(lock_output, "%d%s %s\n", pid, sep, pid =3D=3D -1 ? "Unknown" : thread__comm_str(t)); @@ -1870,7 +1870,7 @@ static int __cmd_report(bool display_info) session =3D perf_session__new(&data, &eops); if (IS_ERR(session)) { pr_err("Initializing perf session failed\n"); - return PTR_ERR(session); + return (int)PTR_ERR(session); } =20 symbol_conf.allow_aliases =3D true; @@ -2023,7 +2023,7 @@ static int __cmd_contention(int argc, const char **ar= gv) session =3D perf_session__new(use_bpf ? NULL : &data, &eops); if (IS_ERR(session)) { pr_err("Initializing perf session failed\n"); - err =3D PTR_ERR(session); + err =3D (int)PTR_ERR(session); session =3D NULL; goto out_delete; } diff --git a/tools/perf/util/bpf_lock_contention.c b/tools/perf/util/bpf_lo= ck_contention.c index 5af8f6d1bc95..5a7a820000d4 100644 --- a/tools/perf/util/bpf_lock_contention.c +++ b/tools/perf/util/bpf_lock_contention.c @@ -54,7 +54,7 @@ static void check_slab_cache_iter(struct lock_contention = *con) =20 has_slab_iter =3D true; =20 - bpf_map__set_max_entries(skel->maps.slab_caches, con->map_nr_entries); + bpf_map__set_max_entries(skel->maps.slab_caches, (__u32)con->map_nr_entri= es); out: btf__free(btf); } @@ -123,23 +123,24 @@ int lock_contention_prepare(struct lock_contention *c= on) } =20 bpf_map__set_value_size(skel->maps.stacks, con->max_stack * sizeof(u64)); - bpf_map__set_max_entries(skel->maps.lock_stat, con->map_nr_entries); - bpf_map__set_max_entries(skel->maps.tstamp, con->map_nr_entries); + bpf_map__set_max_entries(skel->maps.lock_stat, (__u32)con->map_nr_entries= ); + bpf_map__set_max_entries(skel->maps.tstamp, (__u32)con->map_nr_entries); =20 if (con->aggr_mode =3D=3D LOCK_AGGR_TASK) - bpf_map__set_max_entries(skel->maps.task_data, con->map_nr_entries); + bpf_map__set_max_entries(skel->maps.task_data, (__u32)con->map_nr_entrie= s); else bpf_map__set_max_entries(skel->maps.task_data, 1); =20 if (con->save_callstack) { - bpf_map__set_max_entries(skel->maps.stacks, con->map_nr_entries); + bpf_map__set_max_entries(skel->maps.stacks, (__u32)con->map_nr_entries); if (con->owner) { bpf_map__set_value_size(skel->maps.stack_buf, con->max_stack * sizeof(u= 64)); bpf_map__set_key_size(skel->maps.owner_stacks, con->max_stack * sizeof(u64)); - bpf_map__set_max_entries(skel->maps.owner_stacks, con->map_nr_entries); - bpf_map__set_max_entries(skel->maps.owner_data, con->map_nr_entries); - bpf_map__set_max_entries(skel->maps.owner_stat, con->map_nr_entries); + bpf_map__set_max_entries(skel->maps.owner_stacks, + (__u32)con->map_nr_entries); + bpf_map__set_max_entries(skel->maps.owner_data, (__u32)con->map_nr_entr= ies); + bpf_map__set_max_entries(skel->maps.owner_stat, (__u32)con->map_nr_entr= ies); skel->rodata->max_stack =3D con->max_stack; } } else { --=20 2.49.0.906.g1f30a19c02-goog