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AJvYcCXaQYtoY6P6ApzfO1sqrNa7AJFAUFVnYUyQxVZ/SDnv5XFVh0lxHNy9VovTiSwIOdfiYjH9z+Kj0ID23cI=@vger.kernel.org X-Gm-Message-State: AOJu0YygQKTzMuniCxa5OjPHXVOj4gNh+02zZ7fMnLxSIPiBECXtulxc QSQeyKsrkH7BZn/uSyB5My9OPcZ26cy5347Cd2Mck6vT1/DpwqcTf10jiHjG6K5vAGyr1/W4vvW n+RofOw== X-Google-Smtp-Source: AGHT+IHpf31xgCUhp/bSgmJMIP3K05vEfqw1PLaxr//TR346O2GAWFitRRWNuL9GJdbLUJ5lR6UpoSDbOexs X-Received: from pfbhc7.prod.google.com ([2002:a05:6a00:6507:b0:736:5012:3564]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a05:6a00:14d1:b0:736:562b:9a9c with SMTP id d2e1a72fcca58-74038a9295fmr5722381b3a.18.1746035497149; Wed, 30 Apr 2025 10:51:37 -0700 (PDT) Date: Wed, 30 Apr 2025 10:50:08 -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: <20250430175036.184610-21-irogers@google.com> Subject: [PATCH v2 20/47] perf dlfilter: 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/dlfilters/dlfilter-test-api-v0.c | 4 ++-- tools/perf/util/dlfilter.c | 10 +++++----- 2 files changed, 7 insertions(+), 7 deletions(-) diff --git a/tools/perf/dlfilters/dlfilter-test-api-v0.c b/tools/perf/dlfil= ters/dlfilter-test-api-v0.c index 4ca2d7b2ea6c..bf2a1a7b3c71 100644 --- a/tools/perf/dlfilters/dlfilter-test-api-v0.c +++ b/tools/perf/dlfilters/dlfilter-test-api-v0.c @@ -166,10 +166,10 @@ int start(void **data, void *ctx) =20 CHECK(dlargc =3D=3D 6); CHECK(!strcmp(dlargv[0], "first")); - verbose =3D strtol(dlargv[1], NULL, 0); + verbose =3D (int)strtol(dlargv[1], NULL, 0); d->ip =3D strtoull(dlargv[2], NULL, 0); d->addr =3D strtoull(dlargv[3], NULL, 0); - d->do_early =3D strtol(dlargv[4], NULL, 0); + d->do_early =3D (int)strtol(dlargv[4], NULL, 0); CHECK(!strcmp(dlargv[5], "last")); =20 pr_debug("%s API\n", __func__); diff --git a/tools/perf/util/dlfilter.c b/tools/perf/util/dlfilter.c index ddacef881af2..0e513ac7feae 100644 --- a/tools/perf/util/dlfilter.c +++ b/tools/perf/util/dlfilter.c @@ -38,7 +38,7 @@ static void al_to_d_al(struct addr_location *al, struct p= erf_dlfilter_al *d_al) else d_al->dso =3D dso__name(dso); d_al->is_64_bit =3D dso__is_64_bit(dso); - d_al->buildid_size =3D dso__bid(dso)->size; + d_al->buildid_size =3D (__u32)dso__bid(dso)->size; d_al->buildid =3D dso__bid(dso)->data; } else { d_al->dso =3D NULL; @@ -51,9 +51,9 @@ static void al_to_d_al(struct addr_location *al, struct p= erf_dlfilter_al *d_al) d_al->sym_start =3D sym->start; d_al->sym_end =3D sym->end; if (al->addr < sym->end) - d_al->symoff =3D al->addr - sym->start; + d_al->symoff =3D (__u32)(al->addr - sym->start); else if (al->map) - d_al->symoff =3D al->addr - map__start(al->map) - sym->start; + d_al->symoff =3D (__u32)(al->addr - map__start(al->map) - sym->start); else d_al->symoff =3D 0; d_al->sym_binding =3D sym->binding; @@ -290,9 +290,9 @@ static __s32 code_read(__u64 ip, struct map *map, struc= t machine *machine, void u64 offset =3D map__map_ip(map, ip); =20 if (ip + len >=3D map__end(map)) - len =3D map__end(map) - ip; + len =3D (__u32)(map__end(map) - ip); =20 - return dso__data_read_offset(map__dso(map), machine, offset, buf, len); + return (__s32)dso__data_read_offset(map__dso(map), machine, offset, buf, = len); } =20 static __s32 dlfilter__object_code(void *ctx, __u64 ip, void *buf, __u32 l= en) --=20 2.49.0.906.g1f30a19c02-goog