From: Oleg Nesterov <oleg@redhat.com>
To: Jens Axboe <axboe@kernel.dk>
Cc: linux-kernel@vger.kernel.org, io-uring@vger.kernel.org,
peterz@infradead.org, tglx@linutronix.de
Subject: Re: [PATCH 2/5] kernel: add task_sigpending() helper
Date: Thu, 15 Oct 2020 16:42:42 +0200 [thread overview]
Message-ID: <20201015144241.GG24156@redhat.com> (raw)
In-Reply-To: <20201015131701.511523-3-axboe@kernel.dk>
On 10/15, Jens Axboe wrote:
>
> This is in preparation for maintaining signal_pending() as the decider
> of whether or not a schedule() loop should be broken, or continue
> sleeping. This is different than the core signal use cases, where we
> really want to know if an actual signal is pending or not.
> task_sigpending() returns non-zero if TIF_SIGPENDING is set.
>
> Only core kernel use cases should care about the distinction between
> the two, make sure those use the task_sigpending() helper.
>
> Reviewed-by: Thomas Gleixner <tglx@linutronix.de>
> Signed-off-by: Jens Axboe <axboe@kernel.dk>
the same,
Reviewed-by: Oleg Nesterov <oleg@redhat.com>
next prev parent reply other threads:[~2020-10-15 14:42 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-15 13:16 [PATCHSET v5] Add support for TIF_NOTIFY_SIGNAL Jens Axboe
2020-10-15 13:16 ` [PATCH 1/5] tracehook: clear TIF_NOTIFY_RESUME in tracehook_notify_resume() Jens Axboe
2020-10-15 14:42 ` Oleg Nesterov
2020-10-15 14:43 ` Jens Axboe
2020-10-15 13:16 ` [PATCH 2/5] kernel: add task_sigpending() helper Jens Axboe
2020-10-15 14:42 ` Oleg Nesterov [this message]
2020-10-15 13:16 ` [PATCH 3/5] kernel: add support for TIF_NOTIFY_SIGNAL Jens Axboe
2020-10-15 14:31 ` Oleg Nesterov
2020-10-15 14:33 ` Jens Axboe
2020-10-15 14:37 ` Oleg Nesterov
2020-10-15 14:43 ` Jens Axboe
2020-10-15 14:47 ` Oleg Nesterov
2020-10-15 14:53 ` Oleg Nesterov
2020-10-15 14:56 ` Jens Axboe
2020-10-15 15:01 ` Thomas Gleixner
2020-10-15 15:27 ` Oleg Nesterov
2020-10-15 14:44 ` Oleg Nesterov
2020-10-15 13:17 ` [PATCH 4/5] x86: wire up TIF_NOTIFY_SIGNAL Jens Axboe
2020-10-15 14:11 ` Thomas Gleixner
2020-10-15 14:31 ` Jens Axboe
2020-10-15 14:34 ` Thomas Gleixner
2020-10-15 14:35 ` Jens Axboe
2020-10-15 14:36 ` Oleg Nesterov
2020-10-15 14:42 ` Jens Axboe
2020-10-15 14:34 ` Oleg Nesterov
2020-10-15 14:54 ` Thomas Gleixner
2020-10-15 15:17 ` Oleg Nesterov
2020-10-16 9:55 ` Thomas Gleixner
2020-10-16 10:54 ` Oleg Nesterov
2020-10-16 13:07 ` Thomas Gleixner
2020-10-15 14:44 ` Oleg Nesterov
2020-10-20 10:57 ` introduce asm-generic/thread_info.h ? Oleg Nesterov
2020-10-15 13:17 ` [PATCH 5/5] task_work: use TIF_NOTIFY_SIGNAL if available Jens Axboe
2020-10-15 15:49 ` Oleg Nesterov
2020-10-15 18:39 ` Jens Axboe
2020-10-16 9:00 ` Thomas Gleixner
2020-10-16 9:39 ` Thomas Gleixner
2020-10-16 13:35 ` Jens Axboe
2020-10-16 14:17 ` Thomas Gleixner
2020-10-16 14:51 ` Oleg Nesterov
2020-10-16 14:53 ` Jens Axboe
2020-10-16 18:03 ` Thomas Gleixner
2020-10-16 18:05 ` Jens Axboe
2020-10-16 13:33 ` Jens Axboe
2020-10-16 14:11 ` Thomas Gleixner
2020-10-16 14:22 ` Jens Axboe
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