Merge branches 'core-urgent-for-linus', 'perf-urgent-for-linus', 'sched-urgent-for...

* 'core-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  bugs, x86: Fix printk levels for panic, softlockups and stack dumps

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  perf top: Fix number of samples displayed
  perf tools: Fix strlen() bug in perf_event__synthesize_event_type()
  perf tools: Fix broken build by defining _GNU_SOURCE in Makefile
  x86/dumpstack: Remove unneeded check in dump_trace()
  perf: Fix broken interrupt rate throttling

* 'sched-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  sched/rt: Fix task stack corruption under __ARCH_WANT_INTERRUPTS_ON_CTXSW
  sched: Fix ancient race in do_exit()
  sched/nohz: Fix nohz cpu idle load balancing state with cpu hotplug
  sched/s390: Fix compile error in sched/core.c
  sched: Fix rq->nr_uninterruptible update race

* 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  x86/reboot: Remove VersaLogic Menlow reboot quirk
  x86/reboot: Skip DMI checks if reboot set by user
  x86: Properly parenthesize cmpxchg() macro arguments

diff --combined arch/x86/kernel/dumpstack_64.c
index 6d728d9,42b2bca,af7785f,6d728d9,6d728d9..17107bd
--- 1/arch/x86/kernel/dumpstack_64.c
--- 2/arch/x86/kernel/dumpstack_64.c
--- 3/arch/x86/kernel/dumpstack_64.c
--- 4/arch/x86/kernel/dumpstack_64.c
--- 5/arch/x86/kernel/dumpstack_64.c
+++ b/arch/x86/kernel/dumpstack_64.c
@@@@@@ -129,7 -129,7 -129,7 -129,7 -129,7 +129,7 @@@@@@ void dump_trace(struct task_struct *tas
        if (!stack) {
                if (regs)
                        stack = (unsigned long *)regs->sp;
-- --           else if (task && task != current)
++ ++           else if (task != current)
                        stack = (unsigned long *)task->thread.sp;
                else
                        stack = &dummy;
@@@@@@ -269,11 -269,11 -269,11 -269,11 -269,11 +269,11 @@@@@@ void show_registers(struct pt_regs *reg
                unsigned char c;
                u8 *ip;
     
- ---           printk(KERN_EMERG "Stack:\n");
+ +++           printk(KERN_DEFAULT "Stack:\n");
                show_stack_log_lvl(NULL, regs, (unsigned long *)sp,
- ---                              0, KERN_EMERG);
+ +++                              0, KERN_DEFAULT);
     
- ---           printk(KERN_EMERG "Code: ");
+ +++           printk(KERN_DEFAULT "Code: ");
     
                ip = (u8 *)regs->ip - code_prologue;
                if (ip < (u8 *)PAGE_OFFSET || probe_kernel_address(ip, c)) {