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authorJens Axboe <axboe@kernel.dk>2020-10-12 07:15:37 -0600
committerJens Axboe <axboe@kernel.dk>2020-11-09 08:16:55 -0700
commit53855e12588743ea128ee31f913d1c6e2f1d32c8 (patch)
tree099a2844e2ffb706e12f2f119aab99288cb2e714 /arch/arc/kernel
parent88f93de1de0c4633332631eb148bc36e8e8eb28f (diff)
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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/kernel')
-rw-r--r--arch/arc/kernel/entry.S3
-rw-r--r--arch/arc/kernel/signal.c2
2 files changed, 3 insertions, 2 deletions
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 */