diff options
| author | Alastair D'Silva <alastair@d-silva.org> | 2019-11-04 05:32:58 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2019-11-07 15:35:41 +0300 |
| commit | ea458effa88e4f4739551d76fe3f702daf607995 (patch) | |
| tree | d8352970cb1161da34381d5ca173fc7ff9db6907 /arch/powerpc/mm | |
| parent | 076265907cf9633bbef861c7c2a1c26a8209f283 (diff) | |
| download | linux-ea458effa88e4f4739551d76fe3f702daf607995.tar.xz | |
powerpc: Don't flush caches when adding memory
This operation takes a significant amount of time when hotplugging
large amounts of memory (~50 seconds with 890GB of persistent memory).
This was orignally in commit fb5924fddf9e
("powerpc/mm: Flush cache on memory hot(un)plug") to support memtrace,
but the flush on add is not needed as it is flushed on remove.
Signed-off-by: Alastair D'Silva <alastair@d-silva.org>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20191104023305.9581-7-alastair@au1.ibm.com
Diffstat (limited to 'arch/powerpc/mm')
| -rw-r--r-- | arch/powerpc/mm/mem.c | 2 |
1 files changed, 0 insertions, 2 deletions
diff --git a/arch/powerpc/mm/mem.c b/arch/powerpc/mm/mem.c index 634e5ea55b6b..7573002077a6 100644 --- a/arch/powerpc/mm/mem.c +++ b/arch/powerpc/mm/mem.c @@ -142,8 +142,6 @@ int __ref arch_add_memory(int nid, u64 start, u64 size, return -EFAULT; } - flush_dcache_range_chunked(start, start + size, FLUSH_CHUNK_SIZE); - return __add_pages(nid, start_pfn, nr_pages, restrictions); } |