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Commit f0d1128f authored by Tiejun Chen's avatar Tiejun Chen Committed by Benjamin Herrenschmidt
Browse files

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: default avatarTiejun Chen <tiejun.chen@windriver.com>
Signed-off-by: default avatarBenjamin Herrenschmidt <benh@kernel.crashing.org>
parent 52ab3b2b

arch/powerpc/include/asm/thread_info.h

+3 −0
Original line number Diff line number Diff line
@@ -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)