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Move LOG_BUF_SHIFT to a more sensible place 

Several people have observed that perhaps LOG_BUF_SHIFT should be in a more
obvious place than under DEBUG_KERNEL. Under some circumstances (such as the
PARISC architecture), DEBUG_KERNEL can increase kernel size, which is an
undesirable trade off for something as trivial as increasing the kernel log
buffer size.

Instead, move LOG_BUF_SHIFT into "General Setup", so that people are more
likely to be able to change it such a circumstance that the default buffer
size is insufficient.

Signed-off-by: Alistair John Strachan <s0348365@sms.ed.ac.uk>
Acked-by: Randy Dunlap <randy.dunlap@oracle.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alistair John Strachan 2007-05-08 00:31:15 -07:00 committed by Linus Torvalds
parent 63f6564d35
commit 794543a236
2 changed files with 17 additions and 17 deletions
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17
init/Kconfig
View File

@ -266,6 +266,23 @@ config IKCONFIG_PROC
This option enables access to the kernel configuration file
through /proc/config.gz.
config LOG_BUF_SHIFT
int "Kernel log buffer size (16 => 64KB, 17 => 128KB)"
range 12 21
default 17 if S390 || LOCKDEP
default 16 if X86_NUMAQ || IA64
default 15 if SMP
default 14
help
Select kernel log buffer size as a power of 2.
Defaults and Examples:
17 => 128 KB for S/390
16 => 64 KB for x86 NUMAQ or IA-64
15 => 32 KB for SMP
14 => 16 KB for uniprocessor
13 => 8 KB
12 => 4 KB
config CPUSETS
bool "Cpuset support"
depends on SMP

17
lib/Kconfig.debug
View File

@ -86,23 +86,6 @@ config DEBUG_SHIRQ
Drivers ought to be able to handle interrupts coming in at those
points; some don't and need to be caught.
config LOG_BUF_SHIFT
int "Kernel log buffer size (16 => 64KB, 17 => 128KB)" if DEBUG_KERNEL
range 12 21
default 17 if S390 || LOCKDEP
default 16 if X86_NUMAQ || IA64
default 15 if SMP
default 14
help
Select kernel log buffer size as a power of 2.
Defaults and Examples:
17 => 128 KB for S/390
16 => 64 KB for x86 NUMAQ or IA-64
15 => 32 KB for SMP
14 => 16 KB for uniprocessor
13 => 8 KB
12 => 4 KB
config DETECT_SOFTLOCKUP
bool "Detect Soft Lockups"
depends on DEBUG_KERNEL && !S390