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| author | Roland McGrath <roland@redhat.com> | 2008-04-19 19:10:57 -0700 |
|---|---|---|
| committer | Roland McGrath <roland@redhat.com> | 2008-07-26 14:38:05 -0700 |
| commit | 59e52130f04537d2c80ea44bb007cadd1ad29543 (patch) | |
| tree | 80531b2e893f1b4a339ffc84351a82c0347601e6 /arch/x86/kernel | |
| parent | 4dfcbb997aa9f3a6a3ed8c192f0dac28b027e08f (diff) | |
| download | linux-59e52130f04537d2c80ea44bb007cadd1ad29543.tar.gz | |
x86: tracehook: TIF_NOTIFY_RESUME
This adds TIF_NOTIFY_RESUME support for x86, both 64-bit and 32-bit.
When set, we call tracehook_notify_resume() on the way to user mode.
Signed-off-by: Roland McGrath <roland@redhat.com>
Diffstat (limited to 'arch/x86/kernel')
| -rw-r--r-- | arch/x86/kernel/signal_32.c | 5 | ||||
| -rw-r--r-- | arch/x86/kernel/signal_64.c | 5 |
2 files changed, 10 insertions, 0 deletions
diff --git a/arch/x86/kernel/signal_32.c b/arch/x86/kernel/signal_32.c index 22aae1683c14..4445d26efd47 100644 --- a/arch/x86/kernel/signal_32.c +++ b/arch/x86/kernel/signal_32.c @@ -663,5 +663,10 @@ do_notify_resume(struct pt_regs *regs, void *unused, __u32 thread_info_flags) if (thread_info_flags & _TIF_SIGPENDING) do_signal(regs); + if (thread_info_flags & _TIF_NOTIFY_RESUME) { + clear_thread_flag(TIF_NOTIFY_RESUME); + tracehook_notify_resume(regs); + } + clear_thread_flag(TIF_IRET); } diff --git a/arch/x86/kernel/signal_64.c b/arch/x86/kernel/signal_64.c index cb7cf0216ab7..d01e3f6ef26d 100644 --- a/arch/x86/kernel/signal_64.c +++ b/arch/x86/kernel/signal_64.c @@ -523,6 +523,11 @@ void do_notify_resume(struct pt_regs *regs, void *unused, /* deal with pending signal delivery */ if (thread_info_flags & _TIF_SIGPENDING) do_signal(regs); + + if (thread_info_flags & _TIF_NOTIFY_RESUME) { + clear_thread_flag(TIF_NOTIFY_RESUME); + tracehook_notify_resume(regs); + } } void signal_fault(struct pt_regs *regs, void __user *frame, char *where) |