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Subject[RFC patch 15/20] LTTng Kernel Trace Thread Flag SH
Add a thread flag to activate system-wide syscall tracing.

Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
---
arch/sh/include/asm/thread_info.h | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)
Index: linux-2.6-lttng/arch/sh/include/asm/thread_info.h
===================================================================
--- linux-2.6-lttng.orig/arch/sh/include/asm/thread_info.h 2009-03-15 15:57:04.000000000 -0400
+++ linux-2.6-lttng/arch/sh/include/asm/thread_info.h 2009-03-15 15:57:17.000000000 -0400
@@ -116,6 +116,7 @@ extern void free_thread_info(struct thre
#define TIF_SYSCALL_AUDIT 5 /* syscall auditing active */
#define TIF_SECCOMP 6 /* secure computing */
#define TIF_NOTIFY_RESUME 7 /* callback before returning to user */
+#define TIF_KERNEL_TRACE 8 /* kernel trace active */
#define TIF_USEDFPU 16 /* FPU was used by this task this quantum (SMP) */
#define TIF_POLLING_NRFLAG 17 /* true if poll_idle() is polling TIF_NEED_RESCHED */
#define TIF_MEMDIE 18
@@ -129,6 +130,7 @@ extern void free_thread_info(struct thre
#define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT)
#define _TIF_SECCOMP (1 << TIF_SECCOMP)
#define _TIF_NOTIFY_RESUME (1 << TIF_NOTIFY_RESUME)
+#define _TIF_KERNEL_TRACE (1 << TIF_KERNEL_TRACE)
#define _TIF_USEDFPU (1 << TIF_USEDFPU)
#define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG)
#define _TIF_FREEZE (1 << TIF_FREEZE)
@@ -141,17 +143,19 @@ extern void free_thread_info(struct thre

/* work to do in syscall trace */
#define _TIF_WORK_SYSCALL_MASK (_TIF_SYSCALL_TRACE | _TIF_SINGLESTEP | \
- _TIF_SYSCALL_AUDIT | _TIF_SECCOMP)
+ _TIF_SYSCALL_AUDIT | _TIF_SECCOMP | \
+ _TIF_KERNEL_TRACE)

/* work to do on any return to u-space */
#define _TIF_ALLWORK_MASK (_TIF_SYSCALL_TRACE | _TIF_SIGPENDING | \
_TIF_NEED_RESCHED | _TIF_SYSCALL_AUDIT | \
_TIF_SINGLESTEP | _TIF_RESTORE_SIGMASK | \
- _TIF_NOTIFY_RESUME)
+ _TIF_NOTIFY_RESUME | _TIF_KERNEL_TRACE)

/* work to do on interrupt/exception return */
#define _TIF_WORK_MASK (_TIF_ALLWORK_MASK & ~(_TIF_SYSCALL_TRACE | \
- _TIF_SYSCALL_AUDIT | _TIF_SINGLESTEP))
+ _TIF_SYSCALL_AUDIT | _TIF_SINGLESTEP | \
+ _TIF_KERNEL_TRACE))

#endif /* __KERNEL__ */

--
Mathieu Desnoyers
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F BA06 3F25 A8FE 3BAE 9A68


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