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ia64: add support for TIF_NOTIFY_SIGNAL 

Wire up TIF_NOTIFY_SIGNAL handling for ia64.

Cc: linux-ia64@vger.kernel.org
[axboe: added fixes from Mike Rapoport <rppt@kernel.org>]
Signed-off-by: Jens Axboe <axboe@kernel.dk>
This commit is contained in:
Jens Axboe 2020-10-09 14:49:43 -06:00
parent 2f9799ad01
commit b269c229b0
2 changed files with 5 additions and 2 deletions
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4
arch/ia64/include/asm/thread_info.h
View File

@ -103,6 +103,7 @@ struct thread_info {
#define TIF_SYSCALL_TRACE 2 /* syscall trace active */
#define TIF_SYSCALL_AUDIT 3 /* syscall auditing active */
#define TIF_SINGLESTEP 4 /* restore singlestep on return to user mode */
#define TIF_NOTIFY_SIGNAL 5 /* signal notification exist */
#define TIF_NOTIFY_RESUME 6 /* resumption notification requested */
#define TIF_MEMDIE 17 /* is terminating due to OOM killer */
#define TIF_MCA_INIT 18 /* this task is processing MCA or INIT */
@ -115,6 +116,7 @@ struct thread_info {
#define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP)
#define _TIF_SYSCALL_TRACEAUDIT (_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SINGLESTEP)
#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
#define _TIF_NOTIFY_SIGNAL (1 << TIF_NOTIFY_SIGNAL)
#define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
#define _TIF_MCA_INIT (1 << TIF_MCA_INIT)
@ -124,7 +126,7 @@ struct thread_info {
/* "work to do on user-return" bits */
#define TIF_ALLWORK_MASK (_TIF_SIGPENDING|_TIF_NOTIFY_RESUME|_TIF_SYSCALL_AUDIT|\
_TIF_NEED_RESCHED|_TIF_SYSCALL_TRACE)
_TIF_NEED_RESCHED|_TIF_SYSCALL_TRACE|_TIF_NOTIFY_SIGNAL)
/* like TIF_ALLWORK_BITS but sans TIF_SYSCALL_TRACE or TIF_SYSCALL_AUDIT */
#define TIF_WORK_MASK (TIF_ALLWORK_MASK&~(_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT))

3
arch/ia64/kernel/process.c
View File

@ -171,7 +171,8 @@ do_notify_resume_user(sigset_t *unused, struct sigscratch *scr, long in_syscall)
}
/* deal with pending signal delivery */
if (test_thread_flag(TIF_SIGPENDING)) {
if (test_thread_flag(TIF_SIGPENDING) ||
test_thread_flag(TIF_NOTIFY_SIGNAL)) {
local_irq_enable(); /* force interrupt enable */
ia64_do_signal(scr, in_syscall);
}