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printk: don't bother using LOG_CPU_MAX_BUF_SHIFT on !SMP

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When configuring a uniprocessor kernel, don't bother the user with an
irrelevant LOG_CPU_MAX_BUF_SHIFT question, and don't build the unused
code.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Luis R. Rodriguez <mcgrof@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Geert Uytterhoeven
2014-10-13 15:51:11 -07:00
committed by Linus Torvalds
parent de9e14eebf
commit 2240a31db6
2 changed files with 7 additions and 1 deletions
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init/Kconfig
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@@ -838,6 +838,7 @@ config LOG_BUF_SHIFT
config LOG_CPU_MAX_BUF_SHIFT
int "CPU kernel log buffer size contribution (13 => 8 KB, 17 => 128KB)"
depends on SMP
range 0 21
default 12 if !BASE_SMALL
default 0 if BASE_SMALL