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| author | Mike Rapoport <rppt@linux.ibm.com> | 2019-03-12 09:30:50 +0300 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2019-03-12 20:04:02 +0300 |
| commit | c9a688a3e918c4eb4f3916ff99a6dae8995af41b (patch) | |
| tree | 29faf621dd594f941023178df41afdcc6fe2c58c /mm/memblock.c | |
| parent | fe145124dbe53c86bf32b941b2f2f88f891d985d (diff) | |
| download | linux-c9a688a3e918c4eb4f3916ff99a6dae8995af41b.tar.xz | |
memblock: split checks whether a region should be skipped to a helper function
__next_mem_range() and __next_mem_range_rev() duplicate the code that
checks whether a region should be skipped because of node or flags
incompatibility.
Split this code into a helper function.
Link: http://lkml.kernel.org/r/1549455025-17706-3-git-send-email-rppt@linux.ibm.com
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Cc: Michal Hocko <mhocko@suse.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'mm/memblock.c')
| -rw-r--r-- | mm/memblock.c | 53 |
1 files changed, 25 insertions, 28 deletions
diff --git a/mm/memblock.c b/mm/memblock.c index 068e147695ee..dfe90bc210d9 100644 --- a/mm/memblock.c +++ b/mm/memblock.c @@ -965,6 +965,29 @@ void __init_memblock __next_reserved_mem_region(u64 *idx, *idx = ULLONG_MAX; } +static bool should_skip_region(struct memblock_region *m, int nid, int flags) +{ + int m_nid = memblock_get_region_node(m); + + /* only memory regions are associated with nodes, check it */ + if (nid != NUMA_NO_NODE && nid != m_nid) + return true; + + /* skip hotpluggable memory regions if needed */ + if (movable_node_is_enabled() && memblock_is_hotpluggable(m)) + return true; + + /* if we want mirror memory skip non-mirror memory regions */ + if ((flags & MEMBLOCK_MIRROR) && !memblock_is_mirror(m)) + return true; + + /* skip nomap memory unless we were asked for it explicitly */ + if (!(flags & MEMBLOCK_NOMAP) && memblock_is_nomap(m)) + return true; + + return false; +} + /** * __next__mem_range - next function for for_each_free_mem_range() etc. * @idx: pointer to u64 loop variable @@ -1012,20 +1035,7 @@ void __init_memblock __next_mem_range(u64 *idx, int nid, phys_addr_t m_end = m->base + m->size; int m_nid = memblock_get_region_node(m); - /* only memory regions are associated with nodes, check it */ - if (nid != NUMA_NO_NODE && nid != m_nid) - continue; - - /* skip hotpluggable memory regions if needed */ - if (movable_node_is_enabled() && memblock_is_hotpluggable(m)) - continue; - - /* if we want mirror memory skip non-mirror memory regions */ - if ((flags & MEMBLOCK_MIRROR) && !memblock_is_mirror(m)) - continue; - - /* skip nomap memory unless we were asked for it explicitly */ - if (!(flags & MEMBLOCK_NOMAP) && memblock_is_nomap(m)) + if (should_skip_region(m, nid, flags)) continue; if (!type_b) { @@ -1129,20 +1139,7 @@ void __init_memblock __next_mem_range_rev(u64 *idx, int nid, phys_addr_t m_end = m->base + m->size; int m_nid = memblock_get_region_node(m); - /* only memory regions are associated with nodes, check it */ - if (nid != NUMA_NO_NODE && nid != m_nid) - continue; - - /* skip hotpluggable memory regions if needed */ - if (movable_node_is_enabled() && memblock_is_hotpluggable(m)) - continue; - - /* if we want mirror memory skip non-mirror memory regions */ - if ((flags & MEMBLOCK_MIRROR) && !memblock_is_mirror(m)) - continue; - - /* skip nomap memory unless we were asked for it explicitly */ - if (!(flags & MEMBLOCK_NOMAP) && memblock_is_nomap(m)) + if (should_skip_region(m, nid, flags)) continue; if (!type_b) { |