Merge from-linus to-akpm

2 files changed, 9 insertions, 10 deletions

diff --git a/arch/x86_64/kernel/smpboot.c b/arch/x86_64/kernel/smpboot.c
index b15761ff4101..fa25e39fe54d 100644
--- a/arch/x86_64/kernel/smpboot.c
+++ b/arch/x86_64/kernel/smpboot.c
@@ -492,6 +492,14 @@ void __cpuinit start_secondary(void)
          */
         set_cpu_sibling_map(smp_processor_id());
 
+        /* 
+         * Wait for TSC sync to not schedule things before.
+         * We still process interrupts, which could see an inconsistent
+         * time in that window unfortunately. 
+         * Do this here because TSC sync has global unprotected state.
+         */
+        tsc_sync_wait();
+
         /*
          * We need to hold call_lock, so there is no inconsistency
          * between the time smp_call_function() determines number of
@@ -509,13 +517,6 @@ void __cpuinit start_secondary(void)
         per_cpu(cpu_state, smp_processor_id()) = CPU_ONLINE;
         unlock_ipi_call_lock();
 
-        mb();
-
-        /* Wait for TSC sync to not schedule things before.
-           We still process interrupts, which could see an inconsistent
-           time in that window unfortunately. */
-        tsc_sync_wait();
-
         cpu_idle();
 }
 
diff --git a/arch/x86_64/mm/fault.c b/arch/x86_64/mm/fault.c
index 493819e543a5..ca914c3bd49c 100644
--- a/arch/x86_64/mm/fault.c
+++ b/arch/x86_64/mm/fault.c
@@ -211,9 +211,7 @@ int unhandled_signal(struct task_struct *tsk, int sig)
 {
         if (tsk->pid == 1)
                 return 1;
-        /* Warn for strace, but not for gdb */
-        if (!test_ti_thread_flag(tsk->thread_info, TIF_SYSCALL_TRACE) &&
-            (tsk->ptrace & PT_PTRACED))
+        if (tsk->ptrace & PT_PTRACED)
                 return 0;
         return (tsk->sighand->action[sig-1].sa.sa_handler == SIG_IGN) ||
                 (tsk->sighand->action[sig-1].sa.sa_handler == SIG_DFL);