sh: TS_RESTORE_SIGMASK conversion.
Replace TIF_RESTORE_SIGMASK with TS_RESTORE_SIGMASK and define our own set_restore_sigmask() function. This saves the costly SMP-safe set_bit operation, which we do not need for the sigmask flag since TIF_SIGPENDING always has to be set too. Based on the x86 and powerpc change. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
@@ -19,6 +19,7 @@ struct thread_info {
|
||||
struct task_struct *task; /* main task structure */
|
||||
struct exec_domain *exec_domain; /* execution domain */
|
||||
unsigned long flags; /* low level flags */
|
||||
__u32 status; /* thread synchronous flags */
|
||||
__u32 cpu;
|
||||
int preempt_count; /* 0 => preemptable, <0 => BUG */
|
||||
mm_segment_t addr_limit; /* thread address space */
|
||||
@@ -111,7 +112,6 @@ extern void free_thread_info(struct thread_info *ti);
|
||||
#define TIF_SYSCALL_TRACE 0 /* syscall trace active */
|
||||
#define TIF_SIGPENDING 1 /* signal pending */
|
||||
#define TIF_NEED_RESCHED 2 /* rescheduling necessary */
|
||||
#define TIF_RESTORE_SIGMASK 3 /* restore signal mask in do_signal() */
|
||||
#define TIF_SINGLESTEP 4 /* singlestepping active */
|
||||
#define TIF_SYSCALL_AUDIT 5 /* syscall auditing active */
|
||||
#define TIF_SECCOMP 6 /* secure computing */
|
||||
@@ -125,7 +125,6 @@ extern void free_thread_info(struct thread_info *ti);
|
||||
#define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE)
|
||||
#define _TIF_SIGPENDING (1 << TIF_SIGPENDING)
|
||||
#define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED)
|
||||
#define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK)
|
||||
#define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP)
|
||||
#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT)
|
||||
#define _TIF_SECCOMP (1 << TIF_SECCOMP)
|
||||
@@ -149,13 +148,32 @@ extern void free_thread_info(struct thread_info *ti);
|
||||
/* work to do on any return to u-space */
|
||||
#define _TIF_ALLWORK_MASK (_TIF_SYSCALL_TRACE | _TIF_SIGPENDING | \
|
||||
_TIF_NEED_RESCHED | _TIF_SYSCALL_AUDIT | \
|
||||
_TIF_SINGLESTEP | _TIF_RESTORE_SIGMASK | \
|
||||
_TIF_NOTIFY_RESUME | _TIF_SYSCALL_TRACEPOINT)
|
||||
_TIF_SINGLESTEP | _TIF_NOTIFY_RESUME | \
|
||||
_TIF_SYSCALL_TRACEPOINT)
|
||||
|
||||
/* work to do on interrupt/exception return */
|
||||
#define _TIF_WORK_MASK (_TIF_ALLWORK_MASK & ~(_TIF_SYSCALL_TRACE | \
|
||||
_TIF_SYSCALL_AUDIT | _TIF_SINGLESTEP))
|
||||
|
||||
/*
|
||||
* 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.
|
||||
*/
|
||||
#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, (unsigned long *)&ti->flags);
|
||||
}
|
||||
#endif /* !__ASSEMBLY__ */
|
||||
|
||||
#endif /* __KERNEL__ */
|
||||
|
||||
#endif /* __ASM_SH_THREAD_INFO_H */
|
||||
|
Reference in New Issue
Block a user