Messages in this thread Patch in this message | | | Subject | [PATCH RT] Use raw spinlocks in NMI print sequencing. | From | Steven Rostedt <> | Date | Tue, 19 Jun 2007 16:11:34 -0400 |
| |
Currently NMI uses spinlocks to serialize the prints. We need these to be raw spinlocks for PREEMPT_RT
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Index: linux-2.6.21-rt9/arch/x86_64/kernel/nmi.c =================================================================== --- linux-2.6.21-rt9.orig/arch/x86_64/kernel/nmi.c +++ linux-2.6.21-rt9/arch/x86_64/kernel/nmi.c @@ -949,7 +949,7 @@ int __kprobes nmi_watchdog_tick(struct p } if (cpu_isset(cpu, backtrace_mask)) { - static DEFINE_SPINLOCK(lock); /* Serialise the printks */ + static DEFINE_RAW_SPINLOCK(lock); /* Serialise the printks */ spin_lock(&lock); printk("NMI backtrace for cpu %d\n", cpu);
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |