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authorMike Travis <travis@sgi.com>2011-05-24 17:13:20 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2011-05-25 08:39:48 -0700
commit162a7e7500f9664636e649ba59defe541b7c2c60 (patch)
treef44d4e480975d7f2c4bd4fd8625dbdb81eb04ade /arch
parent95dde501907b06e7203c74f8435acfdab9eb2659 (diff)
downloadlinux-linaro-stable-162a7e7500f9664636e649ba59defe541b7c2c60.tar.gz
printk: allocate kernel log buffer earlier
On larger systems, because of the numerous ACPI, Bootmem and EFI messages, the static log buffer overflows before the larger one specified by the log_buf_len param is allocated. Minimize the overflow by allocating the new log buffer as soon as possible. On kernels without memblock, a later call to setup_log_buf from kernel/init.c is the fallback. [akpm@linux-foundation.org: coding-style fixes] [akpm@linux-foundation.org: fix CONFIG_PRINTK=n build] Signed-off-by: Mike Travis <travis@sgi.com> Cc: Yinghai Lu <yhlu.kernel@gmail.com> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Jack Steiner <steiner@sgi.com> Cc: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch')
-rw-r--r--arch/x86/kernel/setup.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/x86/kernel/setup.c b/arch/x86/kernel/setup.c
index 605e5ae19c7f..a3e5948670c2 100644
--- a/arch/x86/kernel/setup.c
+++ b/arch/x86/kernel/setup.c
@@ -946,6 +946,8 @@ void __init setup_arch(char **cmdline_p)
if (init_ohci1394_dma_early)
init_ohci1394_dma_on_all_controllers();
#endif
+ /* Allocate bigger log buffer */
+ setup_log_buf(1);
reserve_initrd();