From: Jens Axboe <[email protected]>
To: [email protected], [email protected]
Cc: [email protected], [email protected], [email protected]
Subject: [PATCHSET v5] Add support for TIF_NOTIFY_SIGNAL
Date: Thu, 15 Oct 2020 07:16:56 -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. See the last patch for numbers.
arch/alpha/kernel/signal.c | 1 -
arch/arc/kernel/signal.c | 2 +-
arch/arm/kernel/signal.c | 1 -
arch/arm64/kernel/signal.c | 1 -
arch/c6x/kernel/signal.c | 4 +--
arch/csky/kernel/signal.c | 1 -
arch/h8300/kernel/signal.c | 4 +--
arch/hexagon/kernel/process.c | 1 -
arch/ia64/kernel/process.c | 2 +-
arch/m68k/kernel/signal.c | 2 +-
arch/microblaze/kernel/signal.c | 2 +-
arch/mips/kernel/signal.c | 1 -
arch/nds32/kernel/signal.c | 4 +--
arch/nios2/kernel/signal.c | 2 +-
arch/openrisc/kernel/signal.c | 1 -
arch/parisc/kernel/signal.c | 4 +--
arch/powerpc/kernel/signal.c | 1 -
arch/riscv/kernel/signal.c | 4 +--
arch/s390/kernel/signal.c | 1 -
arch/sh/kernel/signal_32.c | 4 +--
arch/sparc/kernel/signal_32.c | 4 +--
arch/sparc/kernel/signal_64.c | 4 +--
arch/um/kernel/process.c | 2 +-
arch/x86/include/asm/thread_info.h | 2 ++
arch/x86/kernel/signal.c | 7 +++--
arch/xtensa/kernel/signal.c | 2 +-
include/linux/entry-common.h | 9 +++++--
include/linux/entry-kvm.h | 4 +--
include/linux/sched/signal.h | 20 ++++++++++++---
include/linux/tracehook.h | 31 ++++++++++++++++++++--
kernel/entry/common.c | 7 +++--
kernel/entry/kvm.c | 7 ++---
kernel/events/uprobes.c | 2 +-
kernel/signal.c | 8 +++---
kernel/task_work.c | 41 +++++++++++++++++++++---------
35 files changed, 118 insertions(+), 75 deletions(-)
Changes since v4:
- Change ifdef as per Thomas
- Split x86 change from generic entry code
- Pass in TIF flags for arch_do_signal() to avoid doing multiple bit
tests
--
Jens Axboe
next reply other threads:[~2020-10-15 13:17 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-10-15 13:16 Jens Axboe [this message]
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
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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