diff options
| author | Mathieu Desnoyers <mathieu.desnoyers@efficios.com> | 2011-03-16 19:04:48 -0400 |
|---|---|---|
| committer | Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> | 2011-03-16 19:04:48 -0400 |
| commit | f51f3f6fc6508a550defd24ae48ed6b1bcabb074 (patch) | |
| tree | e5dff844458f64218458e401023f88111b5e94ba /arch/ia64/kernel | |
| parent | 59a0ad3a6cde75828a1787fc778c697913db2995 (diff) | |
lttng-instrumentation/lttng-kernel-trace-thread-flag-ia64
LTTng Kernel Trace Thread Flag ia64
Add a thread flag to activate system-wide syscall tracing.
FIXME : Masami reported that enabling the KERNEL_TRACE thread flag did disable
the gate page for gettimeofday, falling back on a standard system call. More
work would be needed in this area and I don't have the architecture available.
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca>
CC: Masami Hiramatsu <mhiramat@redhat.com>
Diffstat (limited to 'arch/ia64/kernel')
| -rw-r--r-- | arch/ia64/kernel/entry.S | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/arch/ia64/kernel/entry.S b/arch/ia64/kernel/entry.S index 244704a174d..56c4de30197 100644 --- a/arch/ia64/kernel/entry.S +++ b/arch/ia64/kernel/entry.S @@ -620,9 +620,11 @@ GLOBAL_ENTRY(ia64_ret_from_clone) ;; ld4 r2=[r2] ;; + movl r8=_TIF_SYSCALL_TRACEAUDIT + ;; // added stop bits to prevent r8 dependency + and r2=r8,r2 mov r8=0 - and r2=_TIF_SYSCALL_TRACEAUDIT,r2 - ;; + ;; // added stop bits to prevent r2 dependency cmp.ne p6,p0=r2,r0 (p6) br.cond.spnt .strace_check_retval ;; // added stop bits to prevent r8 dependency |