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| author | Ohhoon Kwon <ohoono.kwon@samsung.com> | 2021-09-03 00:56:58 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-03 19:58:14 +0300 |
| commit | a1bc561bb2d3d9b944878955095f53aeba30a166 (patch) | |
| tree | 279ea1c46fd6d7012a9e58de7633bcf29589d9f9 /drivers/base/memory.c | |
| parent | cdcfc631c80e716d4b3bf534471273456bb99556 (diff) | |
| download | linux-a1bc561bb2d3d9b944878955095f53aeba30a166.tar.xz | |
mm: sparse: pass section_nr to section_mark_present
Patch series "mm: sparse: remove __section_nr() function", v4.
This patch (of 3):
With CONFIG_SPARSEMEM_EXTREME enabled, __section_nr() which converts
mem_section to section_nr could be costly since it iterates all section
roots to check if the given mem_section is in its range.
Since both callers of section_mark_present already know section_nr, let's
also pass section_nr as well as mem_section in order to reduce costly
translation.
Link: https://lkml.kernel.org/r/20210707150212.855-1-ohoono.kwon@samsung.com
Link: https://lkml.kernel.org/r/20210707150212.855-2-ohoono.kwon@samsung.com
Signed-off-by: Ohhoon Kwon <ohoono.kwon@samsung.com>
Acked-by: Mike Rapoport <rppt@linux.ibm.com>
Acked-by: Michal Hocko <mhocko@suse.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Cc: Baoquan He <bhe@redhat.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/base/memory.c')
0 files changed, 0 insertions, 0 deletions