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From: Namhyung Kim <namhyung@kernel.org>
To: Riccardo Mancini <rickyman7@gmail.com>
Cc: Arnaldo Carvalho de Melo <acme@kernel.org>,
	Ian Rogers <irogers@google.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Ingo Molnar <mingo@redhat.com>,
	Mark Rutland <mark.rutland@arm.com>, Jiri Olsa <jolsa@redhat.com>,
	linux-kernel <linux-kernel@vger.kernel.org>,
	linux-perf-users <linux-perf-users@vger.kernel.org>,
	Alexey Bayduraev <alexey.v.bayduraev@linux.intel.com>
Subject: Re: [RFC PATCH v2 04/10] perf workqueue: add threadpool execute and wait functions
Date: Fri, 6 Aug 2021 19:56:12 -0700	[thread overview]
Message-ID: <CAM9d7chTQG0QxntYArWdAOz1aCqyaxZecYszo2YTgS1yVC2NdA@mail.gmail.com> (raw)
In-Reply-To: <2b55c73f1c1738361d80349f1c67e5fe9cce7174.1627657061.git.rickyman7@gmail.com>

On Fri, Jul 30, 2021 at 8:34 AM Riccardo Mancini <rickyman7@gmail.com> wrote:
>
> This patch adds:
>  - threadpool__execute: assigns a task to the threads to execute
>    asynchronously.
>  - threadpool__wait: waits for the task to complete on all threads.
> Furthermore, testing for these new functions is added.
>
> This patch completes the threadpool.
>
> Signed-off-by: Riccardo Mancini <rickyman7@gmail.com>
> ---

[SNIP]
> +/**
> + * threadpool__wake_thread - send wake msg to @thread
> + *
> + * This function does not wait for the thread to actually wake
> + * NB: call only from main thread!
> + */
> +static int threadpool__wake_thread(struct threadpool_entry *thread)

Same here.  You can pass pool and idx instead.

Thanks,
Namhyung


> +{
> +       int res;
> +       enum threadpool_msg msg = THREADPOOL_MSG__WAKE;
> +
> +       res = writen(thread->pipes.cmd[1], &msg, sizeof(msg));
> +       if (res < 0) {
> +               pr_debug2("threadpool: error sending wake msg: %s\n", strerror(errno));
> +               return -THREADPOOL_ERROR__WRITEPIPE;
> +       }
> +
> +       pr_debug2("threadpool: sent wake msg %s to tid=%d\n",
> +               threadpool_msg_tags[msg], thread->tid);
> +       return 0;
> +}
> +

  reply	other threads:[~2021-08-07  2:56 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <cover.1627657061.git.rickyman7@gmail.com>
2021-07-30 15:34 ` [RFC PATCH v2 01/10] perf workqueue: threadpool creation and destruction Riccardo Mancini
2021-08-07  2:24   ` Namhyung Kim
2021-08-09 10:30     ` Riccardo Mancini
2021-08-10 18:54       ` Namhyung Kim
2021-08-10 20:24         ` Arnaldo Carvalho de Melo
2021-08-11 17:55           ` Riccardo Mancini
2021-07-30 15:34 ` [RFC PATCH v2 02/10] perf tests: add test for workqueue Riccardo Mancini
2021-07-30 15:34 ` [RFC PATCH v2 03/10] perf workqueue: add threadpool start and stop functions Riccardo Mancini
2021-08-07  2:43   ` Namhyung Kim
2021-08-09 10:35     ` Riccardo Mancini
2021-07-30 15:34 ` [RFC PATCH v2 04/10] perf workqueue: add threadpool execute and wait functions Riccardo Mancini
2021-08-07  2:56   ` Namhyung Kim [this message]
2021-07-30 15:34 ` [RFC PATCH v2 05/10] tools: add sparse context/locking annotations in compiler-types.h Riccardo Mancini
2021-07-30 15:34 ` [RFC PATCH v2 06/10] perf workqueue: introduce workqueue struct Riccardo Mancini
2021-08-09 12:04   ` Jiri Olsa
2021-07-30 15:34 ` [RFC PATCH v2 07/10] perf workqueue: implement worker thread and management Riccardo Mancini
2021-07-30 15:34 ` [RFC PATCH v2 08/10] perf workqueue: add queue_work and flush_workqueue functions Riccardo Mancini
2021-07-30 15:34 ` [RFC PATCH v2 09/10] perf workqueue: add utility to execute a for loop in parallel Riccardo Mancini
2021-07-30 15:34 ` [RFC PATCH v2 10/10] perf synthetic-events: use workqueue parallel_for Riccardo Mancini
2021-08-09 12:04   ` Jiri Olsa
2021-08-09 13:24     ` Riccardo Mancini

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