[RFC patch 05/20] LTTng Kernel Trace Thread Flag Cris

Mathieu Desnoyers
2009-05-09T16:49:55Z

[-- Attachment #1: lttng-kernel-trace-thread-flag-cris.patch --]
[-- Type: text/plain, Size: 1886 bytes --]

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

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

Index: linux-2.6-lttng/arch/cris/include/asm/thread_info.h
===================================================================
--- linux-2.6-lttng.orig/arch/cris/include/asm/thread_info.h 2009-03-15 15:57:05.000000000 -0400
+++ linux-2.6-lttng/arch/cris/include/asm/thread_info.h 2009-03-15 15:57:14.000000000 -0400
@@ -85,6 +85,7 @@ 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
@@ -94,12 +95,16 @@ 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_FREEZE (1<<TIF_FREEZE)

-#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__ */