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mm: use IS_ENABLED(CONFIG_COMPACTION) instead of COMPACTION_BUILD 

We don't need custom COMPACTION_BUILD anymore, since we have handy
IS_ENABLED().

Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Acked-by: Minchan Kim <minchan@kernel.org>
Acked-by: David Rientjes <rientjes@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Kirill A. Shutemov 2012-12-11 16:00:31 -08:00 committed by Linus Torvalds
parent e5adfffc85
commit d84da3f9e4
2 changed files with 5 additions and 11 deletions
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7
include/linux/kernel.h
View File

@ -687,13 +687,6 @@ static inline void ftrace_dump(enum ftrace_dump_mode oops_dump_mode) { }
/* Trap pasters of __FUNCTION__ at compile-time */
#define __FUNCTION__ (__func__)
/* This helps us avoid #ifdef CONFIG_COMPACTION */
#ifdef CONFIG_COMPACTION
#define COMPACTION_BUILD 1
#else
#define COMPACTION_BUILD 0
#endif
/* This helps us to avoid #ifdef CONFIG_SYMBOL_PREFIX */
#ifdef CONFIG_SYMBOL_PREFIX
#define SYMBOL_PREFIX CONFIG_SYMBOL_PREFIX

9
mm/vmscan.c
View File

@ -1752,7 +1752,7 @@ out:
/* Use reclaim/compaction for costly allocs or under memory pressure */
static bool in_reclaim_compaction(struct scan_control *sc)
{
if (COMPACTION_BUILD && sc->order &&
if (IS_ENABLED(CONFIG_COMPACTION) && sc->order &&
(sc->order > PAGE_ALLOC_COSTLY_ORDER ||
sc->priority < DEF_PRIORITY - 2))
return true;
@ -2005,7 +2005,7 @@ static bool shrink_zones(struct zonelist *zonelist, struct scan_control *sc)
if (zone->all_unreclaimable &&
sc->priority != DEF_PRIORITY)
continue; /* Let kswapd poll it */
if (COMPACTION_BUILD) {
if (IS_ENABLED(CONFIG_COMPACTION)) {
/*
* If we already have plenty of memory free for
* compaction in this zone, don't free any more.
@ -2421,7 +2421,8 @@ static bool zone_balanced(struct zone *zone, int order,
balance_gap, classzone_idx, 0))
return false;
if (COMPACTION_BUILD && order && !compaction_suitable(zone, order))
if (IS_ENABLED(CONFIG_COMPACTION) && order &&
!compaction_suitable(zone, order))
return false;
return true;
@ -2684,7 +2685,7 @@ loop_again:
* Do not reclaim more than needed for compaction.
*/
testorder = order;
if (COMPACTION_BUILD && order &&
if (IS_ENABLED(CONFIG_COMPACTION) && order &&
compaction_suitable(zone, order) !=
COMPACT_SKIPPED)
testorder = 0;