From: Jens Axboe <[email protected]>
To: [email protected], [email protected]
Cc: [email protected], [email protected], [email protected]
Subject: [PATCHSET RFC v3 0/6] Add support for TIF_NOTIFY_SIGNAL
Date: Mon, 5 Oct 2020 09:04:32 -0600 [thread overview]
Message-ID: <[email protected]> (raw)
Hi,
The goal is this patch series is to decouple TWA_SIGNAL based task_work
from real signals and signal delivery. The motivation is speeding up
TWA_SIGNAL based task_work, particularly for threaded setups where
->sighand is shared across threads.
Patch 1 is just a cleanup patchs, since I noticed that notify_resume
handling has some arch redundancy..
Patch 2 provides an abstraction around signal_pending(), in preparation
for allowing TIF_NOTIFY_SIGNAL to break scheduling loops.
Patch 3 just splits system call restart handling from the arch signal
delivery. Only the generic entry code is updated.
Patch 4 adds generic support for TIF_NOTIFY_SIGNAL, calling the
appropriate tracehook_notify_signal() if TIF_NOTIFY_SIGNAL is set.
Patch 5 just defines TIF_NOTIFY_SIGNAL for x86, since the generic code
is now ready for it.
Patch 6 finally allows task_work to use notify_signal to handle
TWA_SIGNAL based task_work.
Changes since v2:
- notify resume cleanup
- split patch series
- improve commit messages and comments
- kvm TIF_NOTIFY_SIGNAL handling
--
Jens Axboe
next reply other threads:[~2020-10-05 15:04 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-05 15:04 Jens Axboe [this message]
2020-10-05 15:04 ` [PATCH 1/6] tracehook: clear TIF_NOTIFY_RESUME in tracehook_notify_resume() Jens Axboe
2020-10-08 12:37 ` Oleg Nesterov
2020-10-08 13:36 ` Jens Axboe
2020-10-05 15:04 ` [PATCH 2/6] kernel: add task_sigpending() helper Jens Axboe
2020-10-08 12:58 ` Oleg Nesterov
2020-10-08 13:36 ` Jens Axboe
2020-10-08 13:24 ` Oleg Nesterov
2020-10-08 13:38 ` Jens Axboe
2020-10-05 15:04 ` [PATCH 3/6] kernel: split syscall restart from signal handling Jens Axboe
2020-10-08 14:21 ` Oleg Nesterov
2020-10-08 14:31 ` Jens Axboe
2020-10-08 14:41 ` Jens Axboe
2020-10-08 14:45 ` Oleg Nesterov
2020-10-08 14:47 ` Jens Axboe
2020-10-05 15:04 ` [PATCH 4/6] kernel: add support for TIF_NOTIFY_SIGNAL Jens Axboe
2020-10-08 13:53 ` Oleg Nesterov
2020-10-08 14:07 ` Jens Axboe
2020-10-08 14:27 ` Oleg Nesterov
2020-10-05 15:04 ` [PATCH 5/6] x86: define _TIF_NOTIFY_SIGNAL Jens Axboe
2020-10-05 15:04 ` [PATCH 6/6] task_work: use TIF_NOTIFY_SIGNAL if available Jens Axboe
2020-10-08 14:56 ` [PATCHSET RFC v3 0/6] Add support for TIF_NOTIFY_SIGNAL Oleg Nesterov
2020-10-08 15:00 ` Jens Axboe
2020-10-09 8:01 ` Miroslav Benes
2020-10-09 15:21 ` Jens Axboe
2020-10-10 16:53 ` Jens Axboe
2020-10-12 17:27 ` Miroslav Benes
2020-10-13 19:39 ` Jens Axboe
2020-10-13 23:34 ` Thomas Gleixner
2020-10-13 23:37 ` Jens Axboe
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