[patch-RFC 05/26] LTTng Kernel Trace Thread Flag Cris

[Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>]

Add a thread flag to activate system-wide syscall tracing.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
---
 include/asm-cris/thread_info.h |    9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

Index: linux-2.6-lttng/include/asm-cris/thread_info.h
===================================================================
--- linux-2.6-lttng.orig/include/asm-cris/thread_info.h	2007-11-15 21:18:41.000000000 -0500
+++ linux-2.6-lttng/include/asm-cris/thread_info.h	2007-11-15 21:32:07.000000000 -0500
@@ -83,6 +83,7 @@ struct thread_info {
 #define TIF_NOTIFY_RESUME	1	/* resumption notification requested */
 #define TIF_SIGPENDING		2	/* signal pending */
 #define TIF_NEED_RESCHED	3	/* rescheduling necessary */
+#define TIF_KERNEL_TRACE	4	/* kernel trace active */
 #define TIF_RESTORE_SIGMASK	9	/* restore signal mask in do_signal() */
 #define TIF_POLLING_NRFLAG	16	/* true if poll_idle() is polling TIF_NEED_RESCHED */
 #define TIF_MEMDIE		17
@@ -91,11 +92,15 @@ struct thread_info {
 #define _TIF_NOTIFY_RESUME	(1<<TIF_NOTIFY_RESUME)
 #define _TIF_SIGPENDING		(1<<TIF_SIGPENDING)
 #define _TIF_NEED_RESCHED	(1<<TIF_NEED_RESCHED)
+#define _TIF_KERNEL_TRACE	(1<<TIF_KERNEL_TRACE)
 #define _TIF_RESTORE_SIGMASK	(1<<TIF_RESTORE_SIGMASK)
 #define _TIF_POLLING_NRFLAG	(1<<TIF_POLLING_NRFLAG)
 
-#define _TIF_WORK_MASK		0x0000FFFE	/* work to do on interrupt/exception return */
-#define _TIF_ALLWORK_MASK	0x0000FFFF	/* work to do on any return to u-space */
+/* work to do on interrupt/exception return */
+#define _TIF_WORK_MASK		0x0000FFFF & \
+		(~_TIF_SYSCALL_TRACE | ~_TIF_KERNEL_TRACE)
+/* work to do on any return to u-space */
+#define _TIF_ALLWORK_MASK	0x0000FFFF
 
 #endif /* __KERNEL__ */
 

-- 
Mathieu Desnoyers
Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68
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