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| author |   Jens Axboe <axboe@kernel.dk> | 2020-10-12 07:15:37 -0600 |
|---|---|---|
| committer | Jens Axboe <axboe@kernel.dk> | 2020-11-09 08:16:55 -0700 |
| commit | 53855e12588743ea128ee31f913d1c6e2f1d32c8 (patch) | |
| tree | 099a2844e2ffb706e12f2f119aab99288cb2e714 /arch/arc | |
| parent | Merge branch 'x86/entry' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip into tif-task_work.arch (diff) | |
| download | linux-dev-53855e12588743ea128ee31f913d1c6e2f1d32c8.tar.xz linux-dev-53855e12588743ea128ee31f913d1c6e2f1d32c8.zip | |
arc: add support for TIF_NOTIFY_SIGNAL
Wire up TIF_NOTIFY_SIGNAL handling for arc.
Cc: linux-snps-arc@lists.infradead.org
Acked-by: Vineet Gupta <vgupta@synopsys.com>
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Diffstat (limited to 'arch/arc')
| -rw-r--r-- | arch/arc/include/asm/thread_info.h | 4 | ||||
| -rw-r--r-- | arch/arc/kernel/entry.S | 3 | ||||
| -rw-r--r-- | arch/arc/kernel/signal.c | 2 |
3 files changed, 6 insertions, 3 deletions
diff --git a/arch/arc/include/asm/thread_info.h b/arch/arc/include/asm/thread_info.h index f9eef0e8f0b7..c0942c24d401 100644 --- a/arch/arc/include/asm/thread_info.h +++ b/arch/arc/include/asm/thread_info.h @@ -79,6 +79,7 @@ static inline __attribute_const__ struct thread_info *current_thread_info(void) #define TIF_SIGPENDING 2 /* signal pending */ #define TIF_NEED_RESCHED 3 /* rescheduling necessary */ #define TIF_SYSCALL_AUDIT 4 /* syscall auditing active */ +#define TIF_NOTIFY_SIGNAL 5 /* signal notifications exist */ #define TIF_SYSCALL_TRACE 15 /* syscall trace active */ /* true if poll_idle() is polling TIF_NEED_RESCHED */ @@ -89,11 +90,12 @@ static inline __attribute_const__ struct thread_info *current_thread_info(void) #define _TIF_SIGPENDING (1<<TIF_SIGPENDING) #define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED) #define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT) +#define _TIF_NOTIFY_SIGNAL (1<<TIF_NOTIFY_SIGNAL) #define _TIF_MEMDIE (1<<TIF_MEMDIE) /* work to do on interrupt/exception return */ #define _TIF_WORK_MASK (_TIF_NEED_RESCHED | _TIF_SIGPENDING | \ - _TIF_NOTIFY_RESUME) + _TIF_NOTIFY_RESUME | _TIF_NOTIFY_SIGNAL) /* * _TIF_ALLWORK_MASK includes SYSCALL_TRACE, but we don't need it. diff --git a/arch/arc/kernel/entry.S b/arch/arc/kernel/entry.S index ea00c8a17f07..1f5308abf36d 100644 --- a/arch/arc/kernel/entry.S +++ b/arch/arc/kernel/entry.S @@ -307,7 +307,8 @@ resume_user_mode_begin: mov r0, sp ; pt_regs for arg to do_signal()/do_notify_resume() GET_CURR_THR_INFO_FLAGS r9 - bbit0 r9, TIF_SIGPENDING, .Lchk_notify_resume + and.f 0, r9, TIF_SIGPENDING|TIF_NOTIFY_SIGNAL + bz .Lchk_notify_resume ; Normal Trap/IRQ entry only saves Scratch (caller-saved) regs ; in pt_reg since the "C" ABI (kernel code) will automatically diff --git a/arch/arc/kernel/signal.c b/arch/arc/kernel/signal.c index 2be55fb96d87..a78d8f745a67 100644 --- a/arch/arc/kernel/signal.c +++ b/arch/arc/kernel/signal.c @@ -362,7 +362,7 @@ void do_signal(struct pt_regs *regs) restart_scall = in_syscall(regs) && syscall_restartable(regs); - if (get_signal(&ksig)) { + if (test_thread_flag(TIF_SIGPENDING) && get_signal(&ksig)) { if (restart_scall) { arc_restart_syscall(&ksig.ka, regs); syscall_wont_restart(regs); /* No more restarts */ |