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AJvYcCWyIFVmz0ejQDhjtUW6djLFE9GV4QLb8eJsvnzwm04/E7OfVx/TDTzSUlPBrOGBmByeULgx90HCa41gJBw=@vger.kernel.org X-Gm-Message-State: AOJu0YyQyCzl0e9EznMFzEfvSzAbLz+4uzHSKYUHK9D/VBrRgsAwR6Br bEfVp3T3LeQovHgl47WOrLSvQr9s/ivTD7b/dyXka5/h59/vTdlfQvZpkBG7+ufRGUOb6LCRkDW 2i/WYGQ== X-Google-Smtp-Source: AGHT+IG0fzje+t2hW+hPy3K7I9jJjIAnkr6OhXzLc0jx8cpHraftxXNs9MU4ybMwEqBJuYkZAVaH6/yEYMns X-Received: from pjbst3.prod.google.com ([2002:a17:90b:1fc3:b0:301:4260:4d23]) (user=irogers job=prod-delivery.src-stubby-dispatcher) by 2002:a17:90b:2e4d:b0:2ee:b875:6d30 with SMTP id 98e67ed59e1d1-30a332e9067mr6048776a91.9.1746035524221; Wed, 30 Apr 2025 10:52:04 -0700 (PDT) Date: Wed, 30 Apr 2025 10:50:21 -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: <20250430175036.184610-34-irogers@google.com> Subject: [PATCH v2 33/47] perf bpf_counter: 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/util/bpf_counter.c | 6 +++--- tools/perf/util/bpf_counter_cgroup.c | 2 +- 2 files changed, 4 insertions(+), 4 deletions(-) diff --git a/tools/perf/util/bpf_counter.c b/tools/perf/util/bpf_counter.c index 73fcafbffc6a..3b1dbf1f5f66 100644 --- a/tools/perf/util/bpf_counter.c +++ b/tools/perf/util/bpf_counter.c @@ -177,7 +177,7 @@ static int bpf_program_profiler__load(struct evsel *evs= el, struct target *target return -1; =20 while ((tok =3D strtok_r(bpf_str, ",", &saveptr)) !=3D NULL) { - prog_id =3D strtoul(tok, &p, 10); + prog_id =3D (unsigned int)strtoul(tok, &p, 10); if (prog_id =3D=3D 0 || prog_id =3D=3D UINT_MAX || (*p !=3D '\0' && *p !=3D ',')) { pr_err("Failed to parse bpf prog ids %s\n", @@ -418,7 +418,7 @@ static int bperf_reload_leader_program(struct evsel *ev= sel, int attr_map_fd, link =3D bpf_program__attach(skel->progs.on_switch); if (IS_ERR(link)) { pr_err("Failed to attach leader program\n"); - err =3D PTR_ERR(link); + err =3D (int)PTR_ERR(link); goto out; } =20 @@ -459,7 +459,7 @@ static int bperf_attach_follower_program(struct bperf_f= ollower_bpf *skel, else { link =3D bpf_program__attach(skel->progs.fexit_XXX); if (IS_ERR(link)) - err =3D PTR_ERR(link); + err =3D (int)PTR_ERR(link); } =20 return err; diff --git a/tools/perf/util/bpf_counter_cgroup.c b/tools/perf/util/bpf_cou= nter_cgroup.c index 6ff42619de12..35d1b950e803 100644 --- a/tools/perf/util/bpf_counter_cgroup.c +++ b/tools/perf/util/bpf_counter_cgroup.c @@ -98,7 +98,7 @@ static int bperf_load_program(struct evlist *evlist) FD(cgrp_switch, i)); if (IS_ERR(link)) { pr_err("Failed to attach cgroup program\n"); - err =3D PTR_ERR(link); + err =3D (int)PTR_ERR(link); goto out; } } --=20 2.49.0.906.g1f30a19c02-goog