From: David Howells Date: Thu, 11 Jun 2009 12:05:14 +0000 (+0100) Subject: FRV: Implement TIF_NOTIFY_RESUME X-Git-Tag: v2.6.31-rc1~398^2~2 X-Git-Url: http://ftp.safe.ca/?a=commitdiff_plain;h=b7bab880c795ec620041ef0295cbbbc5a726f414;p=safe%2Fjmp%2Flinux-2.6 FRV: Implement TIF_NOTIFY_RESUME Implement the TIF_NOTIFY_RESUME thread flag, making it call do_notify_resume() which then clears it. This will be made use of later by tracehooks in the new-style ptrace implementation Also discard TIF_IRET as that's not used by FRV. Signed-off-by: David Howells Signed-off-by: Linus Torvalds --- diff --git a/arch/frv/include/asm/thread_info.h b/arch/frv/include/asm/thread_info.h index bb53ab7..e8a5ed7 100644 --- a/arch/frv/include/asm/thread_info.h +++ b/arch/frv/include/asm/thread_info.h @@ -109,20 +109,20 @@ register struct thread_info *__current_thread_info asm("gr15"); * - other flags in MSW */ #define TIF_SYSCALL_TRACE 0 /* syscall trace active */ -#define TIF_SIGPENDING 1 /* signal pending */ -#define TIF_NEED_RESCHED 2 /* rescheduling necessary */ -#define TIF_SINGLESTEP 3 /* restore singlestep on return to user mode */ -#define TIF_IRET 4 /* return with iret */ +#define TIF_NOTIFY_RESUME 1 /* callback before returning to user */ +#define TIF_SIGPENDING 2 /* signal pending */ +#define TIF_NEED_RESCHED 3 /* rescheduling necessary */ +#define TIF_SINGLESTEP 4 /* restore singlestep on return to user mode */ #define TIF_RESTORE_SIGMASK 5 /* restore signal mask in do_signal() */ #define TIF_POLLING_NRFLAG 16 /* true if poll_idle() is polling TIF_NEED_RESCHED */ #define TIF_MEMDIE 17 /* OOM killer killed process */ #define TIF_FREEZE 18 /* freezing for suspend */ #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) +#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME) #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) #define _TIF_NEED_RESCHED (1 << TIF_NEED_RESCHED) #define _TIF_SINGLESTEP (1 << TIF_SINGLESTEP) -#define _TIF_IRET (1 << TIF_IRET) #define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK) #define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) #define _TIF_FREEZE (1 << TIF_FREEZE) diff --git a/arch/frv/kernel/signal.c b/arch/frv/kernel/signal.c index 3bdb368..7ae290a 100644 --- a/arch/frv/kernel/signal.c +++ b/arch/frv/kernel/signal.c @@ -564,4 +564,9 @@ asmlinkage void do_notify_resume(__u32 thread_info_flags) if (thread_info_flags & (_TIF_SIGPENDING | _TIF_RESTORE_SIGMASK)) do_signal(); + /* deal with notification on about to resume userspace execution */ + if (thread_info_flags & _TIF_NOTIFY_RESUME) { + clear_thread_flag(TIF_NOTIFY_RESUME); + } + } /* end do_notify_resume() */