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hexagon: add support for TIF_NOTIFY_SIGNAL 

Wire up TIF_NOTIFY_SIGNAL handling for hexagon.

Cc: linux-hexagon@vger.kernel.org
Acked-by: Brian Cain <bcain@codeaurora.org>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2020-10-09 14:45:22 -06:00
parent f3924d763c
commit aeec819357
2 changed files with 3 additions and 1 deletions
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2
arch/hexagon/include/asm/thread_info.h
View File

@ -95,6 +95,7 @@ register struct thread_info *__current_thread_info asm(QUOTED_THREADINFO_REG);
#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
#define TIF_SINGLESTEP 4 /* restore ss @ return to usr mode */
#define TIF_RESTORE_SIGMASK 6 /* restore sig mask in do_signal() */
#define TIF_NOTIFY_SIGNAL 7 /* signal notifications exist */
/* true if poll_idle() is polling TIF_NEED_RESCHED */
#define TIF_MEMDIE 17 /* OOM killer killed process */
@ -103,6 +104,7 @@ register struct thread_info *__current_thread_info asm(QUOTED_THREADINFO_REG);
#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)
/* work to do on interrupt/exception return - All but TIF_SYSCALL_TRACE */
#define _TIF_WORK_MASK (0x0000FFFF & ~_TIF_SYSCALL_TRACE)

2
arch/hexagon/kernel/process.c
View File

@ -174,7 +174,7 @@ int do_work_pending(struct pt_regs *regs, u32 thread_info_flags)
return 1;
}
if (thread_info_flags & _TIF_SIGPENDING) {
if (thread_info_flags & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL)) {
do_signal(regs);
return 1;
}