diff options
| author | Alexey Dobriyan | 2020-01-30 22:16:50 -0800 |
|---|---|---|
| committer | Linus Torvalds | 2020-01-31 10:30:41 -0800 |
| commit | 1f83d80677a24ae737fe0ab4008e7c72b8a33b35 (patch) | |
| tree | 7a6ada15ce4f36e1b79ea262461bb06f9f02f880 /fs/ext4 | |
| parent | 7dfaa98f646bbc29c3575bc184f2b37aa2dd62c5 (diff) | |
fs/binfmt_elf.c: smaller code generation around auxv vector fill
Filling auxv vector as array with index (auxv[i++] = ...) generates
terrible code. "saved_auxv" should be reworked because it is the worst
member of mm_struct by size/usefullness ratio but do it later.
Meanwhile help gcc a little with *auxv++ idiom.
Space savings on x86_64:
add/remove: 0/0 grow/shrink: 0/1 up/down: 0/-127 (-127)
Function old new delta
load_elf_binary 5470 5343 -127
Link: http://lkml.kernel.org/r/20191208172301.GD19716@avx2
Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Reviewed-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'fs/ext4')
0 files changed, 0 insertions, 0 deletions