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This patch converts the rest of logbuf users (which are out of printk recursion case, but can deadlock in printk). To make printk-safe usage easier the patch introduces 4 helper macros: - logbuf_lock_irq()/logbuf_unlock_irq() lock/unlock the logbuf lock and disable/enable local IRQ - logbuf_lock_irqsave(flags)/logbuf_unlock_irqrestore(flags) lock/unlock the logbuf lock and saves/restores local IRQ state Link: http://lkml.kernel.org/r/[email protected] Cc: Andrew Morton <[email protected]> Cc: Linus Torvalds <[email protected]> Cc: Steven Rostedt <[email protected]> Cc: Jan Kara <[email protected]> Cc: Tejun Heo <[email protected]> Cc: Calvin Owens <[email protected]> Cc: Ingo Molnar <[email protected]> Cc: Peter Zijlstra <[email protected]> Cc: Andy Lutomirski <[email protected]> Cc: Peter Hurley <[email protected]> Cc: [email protected] Signed-off-by: Sergey Senozhatsky <[email protected]> Signed-off-by: Petr Mladek <[email protected]>