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authorTiejun Chen <tiejun.chen@windriver.com>2012-09-16 23:54:29 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2012-09-18 15:32:39 +1000
commitf0d1128fcb919a73941a54f80efab04fa3160dfe (patch)
treecd03603b1248d3b84a250790dd606e55b93468b4 /arch/powerpc
parent52ab3b2b1b1658f29b7d755f29c8fde8f89a92af (diff)
powerpc/kprobe: Introduce a new thread flag
We need to add a new thread flag, TIF_EMULATE_STACK_STORE, for emulating stack store operation while exiting exception. Signed-off-by: Tiejun Chen <tiejun.chen@windriver.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc')
-rw-r--r--arch/powerpc/include/asm/thread_info.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/thread_info.h b/arch/powerpc/include/asm/thread_info.h
index e942203cd4a8..8ceea14d6fe4 100644
--- a/arch/powerpc/include/asm/thread_info.h
+++ b/arch/powerpc/include/asm/thread_info.h
@@ -104,6 +104,8 @@ static inline struct thread_info *current_thread_info(void)
#define TIF_NOTIFY_RESUME 13 /* callback before returning to user */
#define TIF_UPROBE 14 /* breakpointed or single-stepping */
#define TIF_SYSCALL_TRACEPOINT 15 /* syscall tracepoint instrumentation */
+#define TIF_EMULATE_STACK_STORE 16 /* Is an instruction emulation
+ for stack store? */
/* as above, but as bit values */
#define _TIF_SYSCALL_TRACE (1<<TIF_SYSCALL_TRACE)
@@ -121,6 +123,7 @@ static inline struct thread_info *current_thread_info(void)
#define _TIF_NOTIFY_RESUME (1<<TIF_NOTIFY_RESUME)
#define _TIF_UPROBE (1<<TIF_UPROBE)
#define _TIF_SYSCALL_TRACEPOINT (1<<TIF_SYSCALL_TRACEPOINT)
+#define _TIF_EMULATE_STACK_STORE (1<<TIF_EMULATE_STACK_STORE)
#define _TIF_SYSCALL_T_OR_A (_TIF_SYSCALL_TRACE | _TIF_SYSCALL_AUDIT | \
_TIF_SECCOMP | _TIF_SYSCALL_TRACEPOINT)