diff options
Diffstat (limited to 'kernel/printk')
-rw-r--r-- | kernel/printk/printk.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/kernel/printk/printk.c b/kernel/printk/printk.c index f900dc9f6822..02d6b6d28796 100644 --- a/kernel/printk/printk.c +++ b/kernel/printk/printk.c | |||
@@ -1857,10 +1857,16 @@ asmlinkage __visible int printk(const char *fmt, ...) | |||
1857 | int r; | 1857 | int r; |
1858 | 1858 | ||
1859 | va_start(args, fmt); | 1859 | va_start(args, fmt); |
1860 | preempt_disable(); | 1860 | |
1861 | /* | ||
1862 | * If a caller overrides the per_cpu printk_func, then it needs | ||
1863 | * to disable preemption when calling printk(). Otherwise | ||
1864 | * the printk_func should be set to the default. No need to | ||
1865 | * disable preemption here. | ||
1866 | */ | ||
1861 | vprintk_func = this_cpu_read(printk_func); | 1867 | vprintk_func = this_cpu_read(printk_func); |
1862 | r = vprintk_func(fmt, args); | 1868 | r = vprintk_func(fmt, args); |
1863 | preempt_enable(); | 1869 | |
1864 | va_end(args); | 1870 | va_end(args); |
1865 | 1871 | ||
1866 | return r; | 1872 | return r; |