lkml.org 
[lkml]   [2021]   [Mar]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    Date
    From
    Subject[tip: irq/core] tasklets: Use spin wait in tasklet_disable() temporarily
    The following commit has been merged into the irq/core branch of tip:

    Commit-ID: b0cd02c2a9494dbf0a1cc7dc7a3b8b400c158d37
    Gitweb: https://git.kernel.org/tip/b0cd02c2a9494dbf0a1cc7dc7a3b8b400c158d37
    Author: Thomas Gleixner <tglx@linutronix.de>
    AuthorDate: Tue, 09 Mar 2021 09:42:07 +01:00
    Committer: Thomas Gleixner <tglx@linutronix.de>
    CommitterDate: Wed, 17 Mar 2021 16:33:54 +01:00

    tasklets: Use spin wait in tasklet_disable() temporarily

    To ease the transition use spin waiting in tasklet_disable() until all
    usage sites from atomic context have been cleaned up.

    Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
    Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
    Link: https://lore.kernel.org/r/20210309084241.685352806@linutronix.de

    ---
    include/linux/interrupt.h | 3 ++-
    1 file changed, 2 insertions(+), 1 deletion(-)

    diff --git a/include/linux/interrupt.h b/include/linux/interrupt.h
    index 3c8a291..b7f0012 100644
    --- a/include/linux/interrupt.h
    +++ b/include/linux/interrupt.h
    @@ -728,7 +728,8 @@ static inline void tasklet_disable_in_atomic(struct tasklet_struct *t)
    static inline void tasklet_disable(struct tasklet_struct *t)
    {
    tasklet_disable_nosync(t);
    - tasklet_unlock_wait(t);
    + /* Spin wait until all atomic users are converted */
    + tasklet_unlock_spin_wait(t);
    smp_mb();
    }

    \
     
     \ /
      Last update: 2021-03-17 16:52    [W:2.570 / U:0.036 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site