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SubjectRe: [PATCH] microblaze: add support for TIF_NOTIFY_SIGNAL
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Gentle nudge on this one.

On 10/29/20 10:16 AM, Jens Axboe wrote:
> Wire up TIF_NOTIFY_SIGNAL handling for microblaze.
>
> Cc: Michal Simek <monstr@monstr.eu>
> Signed-off-by: Jens Axboe <axboe@kernel.dk>
> ---
>
> 5.11 has support queued up for TIF_NOTIFY_SIGNAL, see this posting
> for details:
>
> https://lore.kernel.org/io-uring/20201026203230.386348-1-axboe@kernel.dk/
>
> As part of that work, I'm adding TIF_NOTIFY_SIGNAL support to all archs,
> as that will enable a set of cleanups once all of them support it. I'm
> happy carrying this patch if need be, or it can be funelled through the
> arch tree. Let me know.
>
> arch/microblaze/include/asm/thread_info.h | 2 ++
> arch/microblaze/kernel/signal.c | 3 ++-
> 2 files changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/arch/microblaze/include/asm/thread_info.h b/arch/microblaze/include/asm/thread_info.h
> index ad8e8fcb90d3..44f5ca331862 100644
> --- a/arch/microblaze/include/asm/thread_info.h
> +++ b/arch/microblaze/include/asm/thread_info.h
> @@ -107,6 +107,7 @@ static inline struct thread_info *current_thread_info(void)
> #define TIF_NEED_RESCHED 3 /* rescheduling necessary */
> /* restore singlestep on return to user mode */
> #define TIF_SINGLESTEP 4
> +#define TIF_NOTIFY_SIGNAL 5 /* signal notifications exist */
> #define TIF_MEMDIE 6 /* is terminating due to OOM killer */
> #define TIF_SYSCALL_AUDIT 9 /* syscall auditing active */
> #define TIF_SECCOMP 10 /* secure computing */
> @@ -119,6 +120,7 @@ static inline struct thread_info *current_thread_info(void)
> #define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
> #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
> #define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP)
> +#define _TIF_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL)
> #define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG)
> #define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT)
> #define _TIF_SECCOMP (1 << TIF_SECCOMP)
> diff --git a/arch/microblaze/kernel/signal.c b/arch/microblaze/kernel/signal.c
> index f11a0ccccabc..5a8d173d7b75 100644
> --- a/arch/microblaze/kernel/signal.c
> +++ b/arch/microblaze/kernel/signal.c
> @@ -313,7 +313,8 @@ static void do_signal(struct pt_regs *regs, int in_syscall)
>
> asmlinkage void do_notify_resume(struct pt_regs *regs, int in_syscall)
> {
> - if (test_thread_flag(TIF_SIGPENDING))
> + if (test_thread_flag(TIF_SIGPENDING) ||
> + test_thread_flag(TIF_NOTIFY_SIGNAL))
> do_signal(regs, in_syscall);
>
> if (test_thread_flag(TIF_NOTIFY_RESUME))
>


--
Jens Axboe

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