diff options
| author |   Roland McGrath <roland@redhat.com> | 2008-04-28 17:30:37 +1000 |
|---|---|---|
| committer |   Paul Mackerras <paulus@samba.org> | 2008-05-14 22:31:33 +1000 |
| commit | 7a10174eeafe737f3ccfcece5bdff749c3b044e0 (patch) | |
| tree | 96d3139ed19153e3369683d6b71cd74852fd1ef5 /include/asm-powerpc/thread_info.h | |
| parent | [POWERPC] Create modalias file in sysfs for of_platform bus (diff) | |
| download | linux-dev-7a10174eeafe737f3ccfcece5bdff749c3b044e0.tar.xz linux-dev-7a10174eeafe737f3ccfcece5bdff749c3b044e0.zip | |
[POWERPC] Define and use TLF_RESTORE_SIGMASK
Replace TIF_RESTORE_SIGMASK with TLF_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.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'include/asm-powerpc/thread_info.h')
| -rw-r--r-- | include/asm-powerpc/thread_info.h | 17 |
1 files changed, 13 insertions, 4 deletions
diff --git a/include/asm-powerpc/thread_info.h b/include/asm-powerpc/thread_info.h index d030f5ce39ad..e079e81051fd 100644 --- a/include/asm-powerpc/thread_info.h +++ b/include/asm-powerpc/thread_info.h @@ -116,7 +116,6 @@ static inline struct thread_info *current_thread_info(void) #define TIF_SECCOMP 10 /* secure computing */ #define TIF_RESTOREALL 11 /* Restore all regs (implies NOERROR) */ #define TIF_NOERROR 12 /* Force successful syscall return */ -#define TIF_RESTORE_SIGMASK 13 /* Restore signal mask in do_signal */ #define TIF_FREEZE 14 /* Freezing for suspend */ #define TIF_RUNLATCH 15 /* Is the runlatch enabled? */ #define TIF_ABI_PENDING 16 /* 32/64 bit switch needed */ @@ -134,21 +133,31 @@ static inline struct thread_info *current_thread_info(void) #define _TIF_SECCOMP (1<<TIF_SECCOMP) #define _TIF_RESTOREALL (1<<TIF_RESTOREALL) #define _TIF_NOERROR (1<<TIF_NOERROR) -#define _TIF_RESTORE_SIGMASK (1<<TIF_RESTORE_SIGMASK) #define _TIF_FREEZE (1<<TIF_FREEZE) #define _TIF_RUNLATCH (1<<TIF_RUNLATCH) #define _TIF_ABI_PENDING (1<<TIF_ABI_PENDING) #define _TIF_SYSCALL_T_OR_A (_TIF_SYSCALL_TRACE|_TIF_SYSCALL_AUDIT|_TIF_SECCOMP) -#define _TIF_USER_WORK_MASK ( _TIF_SIGPENDING | \ - _TIF_NEED_RESCHED | _TIF_RESTORE_SIGMASK) +#define _TIF_USER_WORK_MASK (_TIF_SIGPENDING | _TIF_NEED_RESCHED) #define _TIF_PERSYSCALL_MASK (_TIF_RESTOREALL|_TIF_NOERROR) /* Bits in local_flags */ /* Don't move TLF_NAPPING without adjusting the code in entry_32.S */ #define TLF_NAPPING 0 /* idle thread enabled NAP mode */ +#define TLF_RESTORE_SIGMASK 1 /* Restore signal mask in do_signal */ #define _TLF_NAPPING (1 << TLF_NAPPING) +#define _TLF_RESTORE_SIGMASK (1 << TLF_RESTORE_SIGMASK) + +#ifndef __ASSEMBLY__ +#define HAVE_SET_RESTORE_SIGMASK 1 +static inline void set_restore_sigmask(void) +{ + struct thread_info *ti = current_thread_info(); + ti->local_flags |= _TLF_RESTORE_SIGMASK; + set_bit(TIF_SIGPENDING, &ti->flags); +} +#endif /* !__ASSEMBLY__ */ #endif /* __KERNEL__ */ |