From: Tiejun Chen <tiejun.chen@windriver.com>
To: <benh@kernel.crashing.org>
Cc: linuxppc-dev@lists.ozlabs.org
Subject: [v4][PATCH 1/4] powerpc/kprobe: introduce a new thread flag
Date: Wed, 12 Sep 2012 16:42:02 +0800 [thread overview]
Message-ID: <1347439325-5563-1-git-send-email-tiejun.chen@windriver.com> (raw)
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>
---
arch/powerpc/include/asm/thread_info.h | 3 +++
1 file changed, 3 insertions(+)
diff --git a/arch/powerpc/include/asm/thread_info.h b/arch/powerpc/include/asm/thread_info.h
index e942203..8ceea14 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)
--
1.7.9.5
next reply other threads:[~2012-09-12 8:42 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-09-12 8:42 Tiejun Chen [this message]
2012-09-12 8:42 ` [v4][PATCH 2/4] powerpc/ppc32: make copy_and_flush() as global Tiejun Chen
2012-09-12 8:42 ` [v4][PATCH 3/4] powerpc/kprobe: complete kprobe and migrate exception frame Tiejun Chen
2012-09-12 8:42 ` [v4][PATCH 4/4] powerpc/kprobe: don't emulate store when kprobe stwu r1 Tiejun Chen
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