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sparc: add support for TIF_NOTIFY_SIGNAL 

Wire up TIF_NOTIFY_SIGNAL handling for sparc.

Cc: sparclinux@vger.kernel.org
Signed-off-by: Jens Axboe <axboe@kernel.dk>
zero-sugar-mainline-defconfig
Jens Axboe 2020-10-09 15:44:37 -06:00
parent 24a31b81e3
commit f50a7052f5
4 changed files with 9 additions and 5 deletions
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4
arch/sparc/include/asm/thread_info_32.h
View File

@ -104,6 +104,7 @@ register struct thread_info *current_thread_info_reg asm("g6");
#define TIF_SIGPENDING 2 /* signal pending */
#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
#define TIF_RESTORE_SIGMASK 4 /* restore signal mask in do_signal() */
#define TIF_NOTIFY_SIGNAL 5 /* signal notifications exist */
#define TIF_USEDFPU 8 /* FPU was used by this task
* this quantum (SMP) */
#define TIF_POLLING_NRFLAG 9 /* true if poll_idle() is polling
@ -115,11 +116,12 @@ register struct thread_info *current_thread_info_reg asm("g6");
#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME)
#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
#define _TIF_NOTIFY_SIGNAL (1<<TIF_NOTIFY_SIGNAL)
#define _TIF_USEDFPU (1<<TIF_USEDFPU)
#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)
#define _TIF_DO_NOTIFY_RESUME_MASK (_TIF_NOTIFY_RESUME | \
_TIF_SIGPENDING)
_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL)
#define is_32bit_task() (1)

6
arch/sparc/include/asm/thread_info_64.h
View File

@ -180,7 +180,7 @@ extern struct thread_info *current_thread_info(void);
#define TIF_NOTIFY_RESUME 1 /* callback before returning to user */
#define TIF_SIGPENDING 2 /* signal pending */
#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
/* flag bit 4 is available */
#define TIF_NOTIFY_SIGNAL 4 /* signal notifications exist */
#define TIF_UNALIGNED 5 /* allowed to do unaligned accesses */
#define TIF_UPROBE 6 /* breakpointed or singlestepped */
#define TIF_32BIT 7 /* 32-bit binary */
@ -200,6 +200,7 @@ extern struct thread_info *current_thread_info(void);
#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME)
#define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
#define _TIF_NOTIFY_SIGNAL (1<<TIF_NOTIFY_SIGNAL)
#define _TIF_UNALIGNED (1<<TIF_UNALIGNED)
#define _TIF_UPROBE (1<<TIF_UPROBE)
#define _TIF_32BIT (1<<TIF_32BIT)
@ -213,7 +214,8 @@ extern struct thread_info *current_thread_info(void);
_TIF_DO_NOTIFY_RESUME_MASK | \
_TIF_NEED_RESCHED)
#define _TIF_DO_NOTIFY_RESUME_MASK (_TIF_NOTIFY_RESUME | \
_TIF_SIGPENDING | _TIF_UPROBE)
_TIF_SIGPENDING | _TIF_UPROBE | \
_TIF_NOTIFY_SIGNAL)
#define is_32bit_task() (test_thread_flag(TIF_32BIT))

2
arch/sparc/kernel/signal_32.c
View File

@ -521,7 +521,7 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0)
void do_notify_resume(struct pt_regs *regs, unsigned long orig_i0,
unsigned long thread_info_flags)
{
if (thread_info_flags & _TIF_SIGPENDING)
if (thread_info_flags & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL))
do_signal(regs, orig_i0);
if (thread_info_flags & _TIF_NOTIFY_RESUME)
tracehook_notify_resume(regs);

2
arch/sparc/kernel/signal_64.c
View File

@ -549,7 +549,7 @@ void do_notify_resume(struct pt_regs *regs, unsigned long orig_i0, unsigned long
user_exit();
if (thread_info_flags & _TIF_UPROBE)
uprobe_notify_resume(regs);
if (thread_info_flags & _TIF_SIGPENDING)
if (thread_info_flags & (_TIF_SIGPENDING | _TIF_NOTIFY_SIGNAL))
do_signal(regs, orig_i0);
if (thread_info_flags & _TIF_NOTIFY_RESUME)
tracehook_notify_resume(regs);