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authorRoland McGrath <roland@redhat.com>2008-04-20 15:06:49 -0700
committerDavid S. Miller <davem@davemloft.net>2008-07-27 17:32:19 -0700
commite35a8925e0e7af8b26161a2c161ea31be0296b80 (patch)
tree708008d1494a91f76277f9140a219ac24e88e432 /arch/sparc64
parentbadcbf0e8654c4a4ca51fe46c75a70376e83c1ef (diff)
downloadop-kernel-dev-e35a8925e0e7af8b26161a2c161ea31be0296b80.zip
op-kernel-dev-e35a8925e0e7af8b26161a2c161ea31be0296b80.tar.gz
sparc64: tracehook: TIF_NOTIFY_RESUME
This adds TIF_NOTIFY_RESUME support for sparc64. 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/sparc64')
-rw-r--r--arch/sparc64/kernel/rtrap.S6
-rw-r--r--arch/sparc64/kernel/signal.c5
2 files changed, 8 insertions, 3 deletions
diff --git a/arch/sparc64/kernel/rtrap.S b/arch/sparc64/kernel/rtrap.S
index c6fc695..97a993c 100644
--- a/arch/sparc64/kernel/rtrap.S
+++ b/arch/sparc64/kernel/rtrap.S
@@ -46,7 +46,7 @@ __handle_user_windows:
wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
ldx [%g6 + TI_FLAGS], %l0
-1: andcc %l0, _TIF_SIGPENDING, %g0
+1: andcc %l0, _TIF_DO_NOTIFY_RESUME_MASK, %g0
be,pt %xcc, __handle_user_windows_continue
nop
mov %l5, %o1
@@ -86,7 +86,7 @@ __handle_perfctrs:
wrpr %g0, RTRAP_PSTATE, %pstate
wrpr %g0, RTRAP_PSTATE_IRQOFF, %pstate
ldx [%g6 + TI_FLAGS], %l0
-1: andcc %l0, _TIF_SIGPENDING, %g0
+1: andcc %l0, _TIF_DO_NOTIFY_RESUME_MASK, %g0
be,pt %xcc, __handle_perfctrs_continue
sethi %hi(TSTATE_PEF), %o0
@@ -195,7 +195,7 @@ __handle_preemption_continue:
andcc %l1, %o0, %g0
andcc %l0, _TIF_NEED_RESCHED, %g0
bne,pn %xcc, __handle_preemption
- andcc %l0, _TIF_SIGPENDING, %g0
+ andcc %l0, _TIF_DO_NOTIFY_RESUME_MASK, %g0
bne,pn %xcc, __handle_signal
__handle_signal_continue:
ldub [%g6 + TI_WSAVED], %o2
diff --git a/arch/sparc64/kernel/signal.c b/arch/sparc64/kernel/signal.c
index 9667e96..9424fda 100644
--- a/arch/sparc64/kernel/signal.c
+++ b/arch/sparc64/kernel/signal.c
@@ -17,6 +17,7 @@
#include <linux/errno.h>
#include <linux/wait.h>
#include <linux/ptrace.h>
+#include <linux/tracehook.h>
#include <linux/unistd.h>
#include <linux/mm.h>
#include <linux/tty.h>
@@ -605,4 +606,8 @@ void do_notify_resume(struct pt_regs *regs, unsigned long orig_i0, unsigned long
{
if (thread_info_flags & _TIF_SIGPENDING)
do_signal(regs, orig_i0);
+ if (thread_info_flags & _TIF_NOTIFY_RESUME) {
+ clear_thread_flag(TIF_NOTIFY_RESUME);
+ tracehook_notify_resume(regs);
+ }
}
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