From: Arnaldo Carvalho de Melo <arnaldo.melo@gmail.com>
To: Tommi Rantala <tommi.t.rantala@nokia.com>
Cc: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@redhat.com>, Namhyung Kim <namhyung@kernel.org>,
Thomas Gleixner <tglx@linutronix.de>,
Darren Hart <dvhart@infradead.org>,
Changbin Du <changbin.du@intel.com>,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 3/3] perf bench: Clear struct sigaction before sigaction() syscall
Date: Thu, 5 Mar 2020 11:53:04 -0300 [thread overview]
Message-ID: <20200305145304.GC7895@kernel.org> (raw)
In-Reply-To: <20200305083714.9381-4-tommi.t.rantala@nokia.com>
Em Thu, Mar 05, 2020 at 10:37:14AM +0200, Tommi Rantala escreveu:
> Avoid garbage in sigaction structs used in sigaction() syscalls.
> Valgrind is complaining about it.
Thanks, applied.
- Arnaldo
> Signed-off-by: Tommi Rantala <tommi.t.rantala@nokia.com>
> ---
> tools/perf/bench/epoll-ctl.c | 1 +
> tools/perf/bench/epoll-wait.c | 1 +
> tools/perf/bench/futex-hash.c | 1 +
> tools/perf/bench/futex-lock-pi.c | 1 +
> tools/perf/bench/futex-requeue.c | 1 +
> tools/perf/bench/futex-wake-parallel.c | 1 +
> tools/perf/bench/futex-wake.c | 1 +
> 7 files changed, 7 insertions(+)
>
> diff --git a/tools/perf/bench/epoll-ctl.c b/tools/perf/bench/epoll-ctl.c
> index bb617e5688412..63e2520017d81 100644
> --- a/tools/perf/bench/epoll-ctl.c
> +++ b/tools/perf/bench/epoll-ctl.c
> @@ -313,6 +313,7 @@ int bench_epoll_ctl(int argc, const char **argv)
> exit(EXIT_FAILURE);
> }
>
> + memset(&act, 0, sizeof(act));
> sigfillset(&act.sa_mask);
> act.sa_sigaction = toggle_done;
> sigaction(SIGINT, &act, NULL);
> diff --git a/tools/perf/bench/epoll-wait.c b/tools/perf/bench/epoll-wait.c
> index 7af694437f4ea..5336e628b404c 100644
> --- a/tools/perf/bench/epoll-wait.c
> +++ b/tools/perf/bench/epoll-wait.c
> @@ -427,6 +427,7 @@ int bench_epoll_wait(int argc, const char **argv)
> exit(EXIT_FAILURE);
> }
>
> + memset(&act, 0, sizeof(act));
> sigfillset(&act.sa_mask);
> act.sa_sigaction = toggle_done;
> sigaction(SIGINT, &act, NULL);
> diff --git a/tools/perf/bench/futex-hash.c b/tools/perf/bench/futex-hash.c
> index 8ba0c3330a9a2..c441aa446c7f8 100644
> --- a/tools/perf/bench/futex-hash.c
> +++ b/tools/perf/bench/futex-hash.c
> @@ -137,6 +137,7 @@ int bench_futex_hash(int argc, const char **argv)
> if (!cpu)
> goto errmem;
>
> + memset(&act, 0, sizeof(act));
> sigfillset(&act.sa_mask);
> act.sa_sigaction = toggle_done;
> sigaction(SIGINT, &act, NULL);
> diff --git a/tools/perf/bench/futex-lock-pi.c b/tools/perf/bench/futex-lock-pi.c
> index d0cae8125423f..27c6e1944cbed 100644
> --- a/tools/perf/bench/futex-lock-pi.c
> +++ b/tools/perf/bench/futex-lock-pi.c
> @@ -161,6 +161,7 @@ int bench_futex_lock_pi(int argc, const char **argv)
> if (!cpu)
> err(EXIT_FAILURE, "calloc");
>
> + memset(&act, 0, sizeof(act));
> sigfillset(&act.sa_mask);
> act.sa_sigaction = toggle_done;
> sigaction(SIGINT, &act, NULL);
> diff --git a/tools/perf/bench/futex-requeue.c b/tools/perf/bench/futex-requeue.c
> index a00a6891447ab..7a15c2e610228 100644
> --- a/tools/perf/bench/futex-requeue.c
> +++ b/tools/perf/bench/futex-requeue.c
> @@ -128,6 +128,7 @@ int bench_futex_requeue(int argc, const char **argv)
> if (!cpu)
> err(EXIT_FAILURE, "cpu_map__new");
>
> + memset(&act, 0, sizeof(act));
> sigfillset(&act.sa_mask);
> act.sa_sigaction = toggle_done;
> sigaction(SIGINT, &act, NULL);
> diff --git a/tools/perf/bench/futex-wake-parallel.c b/tools/perf/bench/futex-wake-parallel.c
> index a053cf2b70397..cd2b81a845acb 100644
> --- a/tools/perf/bench/futex-wake-parallel.c
> +++ b/tools/perf/bench/futex-wake-parallel.c
> @@ -234,6 +234,7 @@ int bench_futex_wake_parallel(int argc, const char **argv)
> exit(EXIT_FAILURE);
> }
>
> + memset(&act, 0, sizeof(act));
> sigfillset(&act.sa_mask);
> act.sa_sigaction = toggle_done;
> sigaction(SIGINT, &act, NULL);
> diff --git a/tools/perf/bench/futex-wake.c b/tools/perf/bench/futex-wake.c
> index 58906e9499bb0..2dfcef3e371e4 100644
> --- a/tools/perf/bench/futex-wake.c
> +++ b/tools/perf/bench/futex-wake.c
> @@ -136,6 +136,7 @@ int bench_futex_wake(int argc, const char **argv)
> if (!cpu)
> err(EXIT_FAILURE, "calloc");
>
> + memset(&act, 0, sizeof(act));
> sigfillset(&act.sa_mask);
> act.sa_sigaction = toggle_done;
> sigaction(SIGINT, &act, NULL);
> --
> 2.21.1
>
--
- Arnaldo
next prev parent reply other threads:[~2020-03-05 14:53 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <20200305083714.9381-1-tommi.t.rantala@nokia.com>
2020-03-05 8:37 ` [PATCH 1/3] perf top: Fix stdio interface input handling with glibc 2.28+ Tommi Rantala
2020-03-05 14:49 ` Arnaldo Carvalho de Melo
2020-03-06 7:47 ` Rantala, Tommi T. (Nokia - FI/Espoo)
2020-03-07 7:36 ` [tip: perf/urgent] " tip-bot2 for Tommi Rantala
2020-03-05 8:37 ` [PATCH 2/3] perf bench futex-wake: Restore thread count default to online CPU count Tommi Rantala
2020-03-05 14:51 ` Arnaldo Carvalho de Melo
2020-03-05 15:34 ` Davidlohr Bueso
2020-03-05 18:14 ` Arnaldo Melo
2020-03-07 7:36 ` [tip: perf/urgent] " tip-bot2 for Tommi Rantala
2020-03-05 8:37 ` [PATCH 3/3] perf bench: Clear struct sigaction before sigaction() syscall Tommi Rantala
2020-03-05 14:53 ` Arnaldo Carvalho de Melo [this message]
2020-03-07 7:36 ` [tip: perf/urgent] " tip-bot2 for Tommi Rantala
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