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| author |   Wei Yang <richard.weiyang@gmail.com> | 2018-06-07 17:06:43 -0700 |
|---|---|---|
| committer |   Linus Torvalds <torvalds@linux-foundation.org> | 2018-06-07 17:34:35 -0700 |
| commit | 08994b24673b6ae33ee40fc3b5e265c6762848e4 (patch) | |
| tree | 8edd4c0b7acf7664a526358273bdc8dca66915ff /mm/sparse.c | |
| parent | mm/sparse.c: check __highest_present_section_nr only for a present section (diff) | |
| download | linux-dev-08994b24673b6ae33ee40fc3b5e265c6762848e4.tar.xz linux-dev-08994b24673b6ae33ee40fc3b5e265c6762848e4.zip | |
mm/sparse.c: pass the __highest_present_section_nr + 1 to alloc_func()
In commit c4e1be9ec113 ("mm, sparsemem: break out of loops early")
__highest_present_section_nr is introduced to reduce the loop counts for
present section. This is also helpful for usemap and memmap allocation.
This patch uses __highest_present_section_nr + 1 to optimize the loop.
Link: http://lkml.kernel.org/r/20180326081956.75275-1-richard.weiyang@gmail.com
Signed-off-by: Wei Yang <richard.weiyang@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: David Rientjes <rientjes@google.com>
Cc: Dave Hansen <dave.hansen@intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/sparse.c')
| -rw-r--r-- | mm/sparse.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/mm/sparse.c b/mm/sparse.c index 3570ff294ab1..f13f2723950a 100644 --- a/mm/sparse.c +++ b/mm/sparse.c @@ -522,7 +522,7 @@ static void __init alloc_usemap_and_memmap(void (*alloc_func) map_count = 1; } /* ok, last chunk */ - alloc_func(data, pnum_begin, NR_MEM_SECTIONS, + alloc_func(data, pnum_begin, __highest_present_section_nr+1, map_count, nodeid_begin); } |