printk: Increase maximum CONFIG_LOG_BUF_SHIFT from 21 to 25

So I tried to some kernel debugging that produced a ton of kernel messages
on a big box, and wanted to save them all: but CONFIG_LOG_BUF_SHIFT maxes
out at 21 (2 MB).

Increase it to 25 (32 MB).

This does not affect any existing config or defaults.

Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/init/Kconfig b/init/Kconfig
index b999fa381bf9fe1f37757af5e0a454cc6adb2da9..db615e720d28f66383bb5aaa910dab7dbadd1ac7 100644 (file)
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -820,7 +820,7 @@ config IKCONFIG_PROC
 
 config LOG_BUF_SHIFT
        int "Kernel log buffer size (16 => 64KB, 17 => 128KB)"
-       range 12 21
+       range 12 25
        default 17
        depends on PRINTK
        help