diff options
| author | Zhang Qilong <zhangqilong3@huawei.com> | 2025-07-31 15:23:05 +0300 |
|---|---|---|
| committer | Andrew Morton <akpm@linux-foundation.org> | 2025-09-14 02:54:42 +0300 |
| commit | 849d5cff4d48be9146c2bf3c492fc7f434b5ffaa (patch) | |
| tree | 89fd0f052b5e39e528235d3a11b96e987ff65fc6 /rust/helpers/vmalloc.c | |
| parent | 337135e6124b6d37d7ef1cd5a6c0b9681938c5ee (diff) | |
| download | linux-849d5cff4d48be9146c2bf3c492fc7f434b5ffaa.tar.xz | |
/dev/zero: try to align PMD_SIZE for private mapping
Attempt to map aligned to huge page size for private mapping which could
achieve performance gains, the mprot_tw4m in libMicro average execution
time on arm64:
- Test case: mprot_tw4m
- Before the patch: 22 us
- After the patch: 17 us
If THP config is not set, we fall back to system page size mappings.
Link: https://lkml.kernel.org/r/20250731122305.2669090-1-zhangqilong3@huawei.com
Signed-off-by: Zhang Qilong <zhangqilong3@huawei.com>
Reviewed-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Tested-by: Lorenzo Stoakes <lorenzo.stoakes@oracle.com>
Acked-by: David Hildenbrand <david@redhat.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Nanyong Sun <sunnanyong@huawei.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'rust/helpers/vmalloc.c')
0 files changed, 0 insertions, 0 deletions