Messages in this thread | | | Date | Fri, 6 Jan 2023 09:22:20 -0700 | From | Jens Axboe <> | Subject | [GIT PULL] ARM TIF_NOTIFY_SIGNAL fixup |
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Hi Linus,
Hui Tang reported a performance regressions with _TIF_WORK_MASK in newer kernels, which he tracked to a change that went into 5.11. After this change, we'll call do_work_pending() more often than we need to, because we're now testing bits 0..15 rather than just 0..7.
Shuffle the bits around to avoid this.
Please pull!
The following changes since commit 69b41ac87e4a664de78a395ff97166f0b2943210:
Merge tag 'for-6.2-rc2-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux (2023-01-02 11:06:18 -0800)
are available in the Git repository at:
git://git.kernel.dk/linux.git tags/tif-notify-signal-2023-01-06
for you to fetch changes up to 191f8453fc99a537ea78b727acea739782378b0d:
ARM: renumber bits related to _TIF_WORK_MASK (2023-01-04 07:55:02 -0700)
---------------------------------------------------------------- tif-notify-signal-2023-01-06
---------------------------------------------------------------- Jens Axboe (1): ARM: renumber bits related to _TIF_WORK_MASK
arch/arm/include/asm/thread_info.h | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-)
-- Jens Axboe
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