Re: Possible performance bug
* Steve Grubb (sgrubb(a)redhat.com) wrote:
227 movl TI_flags(%ebp), %ecx
228 testw $_TIF_ALLWORK_MASK, %cx
229 jne syscall_exit_work
So, Amy is right, the TIF_AUDIT flag has some bearing on the benchmarks.
How's this one go?
kernel/auditsc.c | 4 +++-
1 files changed, 3 insertions(+), 1 deletion(-)
Index: linus-2.6/kernel/auditsc.c
===================================================================
--- linus-2.6.orig/kernel/auditsc.c
+++ linus-2.6/kernel/auditsc.c
@@ -606,8 +606,10 @@ int audit_alloc(struct task_struct *tsk)
struct audit_context *context;
enum audit_state state;
- if (likely(!audit_enabled))
+ if (likely(!audit_enabled)) {
+ clear_tsk_thread_flag(tsk, TIF_SYSCALL_AUDIT);
return 0; /* Return if not auditing. */
+ }
state = audit_filter_task(tsk);
if (likely(state == AUDIT_DISABLED))