From fb39f98d14d2c92531e79bcda5a0b802e2aaf202 Mon Sep 17 00:00:00 2001 From: Ingo Molnar Date: Wed, 1 Jul 2015 10:19:11 +0200 Subject: [PATCH] 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 Cc: Andrew Morton Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: linux-kernel@vger.kernel.org Signed-off-by: Ingo Molnar --- init/Kconfig | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/init/Kconfig b/init/Kconfig index b999fa381bf9..db615e720d28 100644 --- 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