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UPSTREAM: openrisc: add support for TIF_NOTIFY_SIGNAL

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[ Upstream commit e181c0aa2e532af2b17128fbde699f8578cc0562 ]

Wire up TIF_NOTIFY_SIGNAL handling for openrisc.

Cc: openrisc@lists.librecores.org
Acked-by: Stafford Horne <shorne@gmail.com>
Change-Id: I664b804e2b20332f1c529bca7e083c62e95e6d9f
Signed-off-by: Jens Axboe <axboe@kernel.dk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
(cherry picked from commit 12284aec88)
Bug: 268174392
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
This commit is contained in:
Jens Axboe
2020-10-09 15:24:46 -06:00
committed by Greg Kroah-Hartman
parent e2e4fbbceb
commit 2b94543d45
2 changed files with 3 additions and 1 deletions
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2
arch/openrisc/include/asm/thread_info.h
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@@ -98,6 +98,7 @@ register struct thread_info *current_thread_info_reg asm("r10");
#define TIF_SINGLESTEP 4 /* restore singlestep on return to user #define TIF_SINGLESTEP 4 /* restore singlestep on return to user
* mode * mode
*/ */
#define TIF_NOTIFY_SIGNAL 5 /* signal notifications exist */
#define TIF_SYSCALL_TRACEPOINT 8 /* for ftrace syscall instrumentation */ #define TIF_SYSCALL_TRACEPOINT 8 /* for ftrace syscall instrumentation */
#define TIF_RESTORE_SIGMASK 9 #define TIF_RESTORE_SIGMASK 9
#define TIF_POLLING_NRFLAG 16 /* true if poll_idle() is polling * TIF_NEED_RESCHED #define TIF_POLLING_NRFLAG 16 /* true if poll_idle() is polling * TIF_NEED_RESCHED
@@ -109,6 +110,7 @@ register struct thread_info *current_thread_info_reg asm("r10");
#define _TIF_SIGPENDING (1<<TIF_SIGPENDING) #define _TIF_SIGPENDING (1<<TIF_SIGPENDING)
#define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED) #define _TIF_NEED_RESCHED (1<<TIF_NEED_RESCHED)
#define _TIF_SINGLESTEP (1<<TIF_SINGLESTEP) #define _TIF_SINGLESTEP (1<<TIF_SINGLESTEP)
#define _TIF_NOTIFY_SIGNAL (1<<TIF_NOTIFY_SIGNAL)
#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG) #define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)

2
arch/openrisc/kernel/signal.c
View File

@@ -299,7 +299,7 @@ do_work_pending(struct pt_regs *regs, unsigned int thread_flags, int syscall)
if (unlikely(!user_mode(regs))) if (unlikely(!user_mode(regs)))
return 0; return 0;
local_irq_enable(); local_irq_enable();
if (thread_flags & _TIF_SIGPENDING) { if (thread_flags & (_TIF_SIGPENDING|_TIF_NOTIFY_SIGNAL)) {
int restart = do_signal(regs, syscall); int restart = do_signal(regs, syscall);
if (unlikely(restart)) { if (unlikely(restart)) {
/* /*