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| author | Roland McGrath <roland@redhat.com> | 2008-07-27 16:52:52 +1000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2008-07-28 16:30:50 +1000 |
| commit | 7d6d637dac2050f30a1b57b0a3dc5de4a10616ba (patch) | |
| tree | 5108cacaf5e204d58bc07afb1d67c73144f1bf55 /arch/powerpc/kernel/signal.c | |
| parent | f1ba12856b7a7d43e495e216bc91e6bbf7aac383 (diff) | |
| download | op-kernel-dev-7d6d637dac2050f30a1b57b0a3dc5de4a10616ba.zip op-kernel-dev-7d6d637dac2050f30a1b57b0a3dc5de4a10616ba.tar.gz | |
powerpc: Add TIF_NOTIFY_RESUME support for tracehook
This adds TIF_NOTIFY_RESUME support for powerpc. When set,
we call tracehook_notify_resume() on the way to user mode.
This overloads do_signal() to do the work, but changes its
arguments to it has the TIF_* bits handy in a register and
drops the useless first argument that was always zero.
Signed-off-by: Roland McGrath <roland@redhat.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/kernel/signal.c')
| -rw-r--r-- | arch/powerpc/kernel/signal.c | 13 |
1 files changed, 12 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/signal.c b/arch/powerpc/kernel/signal.c index e74aa0e..a54405e 100644 --- a/arch/powerpc/kernel/signal.c +++ b/arch/powerpc/kernel/signal.c @@ -112,7 +112,7 @@ static void check_syscall_restart(struct pt_regs *regs, struct k_sigaction *ka, } } -int do_signal(sigset_t *oldset, struct pt_regs *regs) +static int do_signal_pending(sigset_t *oldset, struct pt_regs *regs) { siginfo_t info; int signr; @@ -188,6 +188,17 @@ int do_signal(sigset_t *oldset, struct pt_regs *regs) return ret; } +void do_signal(struct pt_regs *regs, unsigned long thread_info_flags) +{ + if (thread_info_flags & _TIF_SIGPENDING) + do_signal_pending(NULL, regs); + + if (thread_info_flags & _TIF_NOTIFY_RESUME) { + clear_thread_flag(TIF_NOTIFY_RESUME); + tracehook_notify_resume(regs); + } +} + long sys_sigaltstack(const stack_t __user *uss, stack_t __user *uoss, unsigned long r5, unsigned long r6, unsigned long r7, unsigned long r8, struct pt_regs *regs) |
