lk/linux-kernel-test
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

printk, lockdep: Remove superfluous preempt_disable()

Browse Source 
The raw_lock_irq_{save,restore}() already implies a
non-preemptibility.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Peter Zijlstra
2011-06-07 11:17:30 +02:00
committed by Ingo Molnar
parent 94d24fc472
commit 47ff5c95db
1 changed files with 0 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

2
kernel/printk.c
View File

@@ -841,7 +841,6 @@ asmlinkage int vprintk(const char *fmt, va_list args)
boot_delay_msec(); boot_delay_msec();
printk_delay(); printk_delay();
preempt_disable();
/* This stops the holder of console_sem just where we want him */ /* This stops the holder of console_sem just where we want him */
raw_local_irq_save(flags); raw_local_irq_save(flags);
this_cpu = smp_processor_id(); this_cpu = smp_processor_id();
@@ -965,7 +964,6 @@ asmlinkage int vprintk(const char *fmt, va_list args)
out_restore_irqs: out_restore_irqs:
raw_local_irq_restore(flags); raw_local_irq_restore(flags);
preempt_enable();
return printed_len; return printed_len;
} }
EXPORT_SYMBOL(printk); EXPORT_SYMBOL(printk);