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yaml
---
r: 96755
b: refs/heads/master
c: 9a28dbf
h: refs/heads/master
i:
  96753: 6781e71
  96751: 461ae03
v: v3
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David S. Miller committed May 13, 2008
1 parent 9757054 commit a6713da
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Showing 5 changed files with 45 additions and 25 deletions.
2 changes: 1 addition & 1 deletion [refs]
Original file line number Diff line number Diff line change
@@ -1,2 +1,2 @@
---
refs/heads/master: faa6cfde747ba6d37a0889cbe85881c80806d355
refs/heads/master: 9a28dbf8af11d127bf1c644143e7882cb91515dd
6 changes: 3 additions & 3 deletions trunk/arch/sparc64/kernel/rtrap.S
Original file line number Diff line number Diff line change
Expand Up @@ -46,7 +46,7 @@ __handle_user_windows:
wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
ldx [%g6 + TI_FLAGS], %l0

1: andcc %l0, (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK), %g0
1: andcc %l0, _TIF_SIGPENDING, %g0
be,pt %xcc, __handle_user_windows_continue
nop
mov %l5, %o1
Expand Down Expand Up @@ -86,7 +86,7 @@ __handle_perfctrs:
wrpr %g0, RTRAP_PSTATE, %pstate
wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
ldx [%g6 + TI_FLAGS], %l0
1: andcc %l0, (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK), %g0
1: andcc %l0, _TIF_SIGPENDING, %g0

be,pt %xcc, __handle_perfctrs_continue
sethi %hi(TSTATE_PEF), %o0
Expand Down Expand Up @@ -195,7 +195,7 @@ __handle_preemption_continue:
andcc %l1, %o0, %g0
andcc %l0, _TIF_NEED_RESCHED, %g0
bne,pn %xcc, __handle_preemption
andcc %l0, (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK), %g0
andcc %l0, _TIF_SIGPENDING, %g0
bne,pn %xcc, __handle_signal
__handle_signal_continue:
ldub [%g6 + TI_WSAVED], %o2
Expand Down
21 changes: 11 additions & 10 deletions trunk/arch/sparc64/kernel/signal.c
Original file line number Diff line number Diff line change
Expand Up @@ -247,7 +247,9 @@ static long _sigpause_common(old_sigset_t set)

current->state = TASK_INTERRUPTIBLE;
schedule();
set_thread_flag(TIF_RESTORE_SIGMASK);

set_restore_sigmask();

return -ERESTARTNOHAND;
}

Expand Down Expand Up @@ -537,7 +539,7 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0)
} else
restart_syscall = 0;

if (test_thread_flag(TIF_RESTORE_SIGMASK))
if (current_thread_info()->status & TS_RESTORE_SIGMASK)
oldset = &current->saved_sigmask;
else
oldset = &current->blocked;
Expand Down Expand Up @@ -566,13 +568,12 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0)
syscall_restart(orig_i0, regs, &ka.sa);
handle_signal(signr, &ka, &info, oldset, regs);

/* a signal was successfully delivered; the saved
/* A signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
* and will be restored by sigreturn, so we can simply
* clear the TIF_RESTORE_SIGMASK flag.
* clear the TS_RESTORE_SIGMASK flag.
*/
if (test_thread_flag(TIF_RESTORE_SIGMASK))
clear_thread_flag(TIF_RESTORE_SIGMASK);
current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
return;
}
if (restart_syscall &&
Expand All @@ -591,17 +592,17 @@ static void do_signal(struct pt_regs *regs, unsigned long orig_i0)
regs->tnpc -= 4;
}

/* if there's no signal to deliver, we just put the saved sigmask
/* If there's no signal to deliver, we just put the saved sigmask
* back
*/
if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
clear_thread_flag(TIF_RESTORE_SIGMASK);
if (current_thread_info()->status & TS_RESTORE_SIGMASK) {
current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
}
}

void do_notify_resume(struct pt_regs *regs, unsigned long orig_i0, unsigned long thread_info_flags)
{
if (thread_info_flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK))
if (thread_info_flags & _TIF_SIGPENDING)
do_signal(regs, orig_i0);
}
13 changes: 6 additions & 7 deletions trunk/arch/sparc64/kernel/signal32.c
Original file line number Diff line number Diff line change
Expand Up @@ -788,13 +788,12 @@ void do_signal32(sigset_t *oldset, struct pt_regs * regs,
syscall_restart32(orig_i0, regs, &ka.sa);
handle_signal32(signr, &ka, &info, oldset, regs);

/* a signal was successfully delivered; the saved
/* A signal was successfully delivered; the saved
* sigmask will have been stored in the signal frame,
* and will be restored by sigreturn, so we can simply
* clear the TIF_RESTORE_SIGMASK flag.
* clear the TS_RESTORE_SIGMASK flag.
*/
if (test_thread_flag(TIF_RESTORE_SIGMASK))
clear_thread_flag(TIF_RESTORE_SIGMASK);
current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
return;
}
if (restart_syscall &&
Expand All @@ -813,11 +812,11 @@ void do_signal32(sigset_t *oldset, struct pt_regs * regs,
regs->tnpc -= 4;
}

/* if there's no signal to deliver, we just put the saved sigmask
/* If there's no signal to deliver, we just put the saved sigmask
* back
*/
if (test_thread_flag(TIF_RESTORE_SIGMASK)) {
clear_thread_flag(TIF_RESTORE_SIGMASK);
if (current_thread_info()->status & TS_RESTORE_SIGMASK) {
current_thread_info()->status &= ~TS_RESTORE_SIGMASK;
sigprocmask(SIG_SETMASK, &current->saved_sigmask, NULL);
}
}
Expand Down
28 changes: 24 additions & 4 deletions trunk/include/asm-sparc64/thread_info.h
Original file line number Diff line number Diff line change
Expand Up @@ -38,7 +38,7 @@ struct thread_info {
struct task_struct *task;
unsigned long flags;
__u8 fpsaved[7];
__u8 pad;
__u8 status;
unsigned long ksp;

/* D$ line 2 */
Expand Down Expand Up @@ -217,7 +217,7 @@ register struct thread_info *current_thread_info_reg asm("g6");
* nop
*/
#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
#define TIF_RESTORE_SIGMASK 1 /* restore signal mask in do_signal() */
/* flags bit 1 is available */
#define TIF_SIGPENDING 2 /* signal pending */
#define TIF_NEED_RESCHED 3 /* rescheduling necessary */
#define TIF_PERFCTR 4 /* performance counters active */
Expand All @@ -244,14 +244,34 @@ register struct thread_info *current_thread_info_reg asm("g6");
#define _TIF_32BIT (1<<TIF_32BIT)
#define _TIF_SECCOMP (1<<TIF_SECCOMP)
#define _TIF_SYSCALL_AUDIT (1<<TIF_SYSCALL_AUDIT)
#define _TIF_RESTORE_SIGMASK (1<<TIF_RESTORE_SIGMASK)
#define _TIF_ABI_PENDING (1<<TIF_ABI_PENDING)
#define _TIF_POLLING_NRFLAG (1<<TIF_POLLING_NRFLAG)

#define _TIF_USER_WORK_MASK ((0xff << TI_FLAG_WSAVED_SHIFT) | \
(_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK | \
(_TIF_SIGPENDING | \
_TIF_NEED_RESCHED | _TIF_PERFCTR))

/*
* Thread-synchronous status.
*
* This is different from the flags in that nobody else
* ever touches our thread-synchronous status, so we don't
* have to worry about atomic accesses.
*
* Note that there are only 8 bits available.
*/
#define TS_RESTORE_SIGMASK 0x0001 /* restore signal mask in do_signal() */

#ifndef __ASSEMBLY__
#define HAVE_SET_RESTORE_SIGMASK 1
static inline void set_restore_sigmask(void)
{
struct thread_info *ti = current_thread_info();
ti->status |= TS_RESTORE_SIGMASK;
set_bit(TIF_SIGPENDING, &ti->flags);
}
#endif /* !__ASSEMBLY__ */

#endif /* __KERNEL__ */

#endif /* _ASM_THREAD_INFO_H */

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