mirrors/linux
2
0
Fork 0
mirror of https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git synced 2026-05-16 02:01:18 -04:00
Code Issues Packages Projects Releases Wiki Activity

lib/crc: arm64: Drop unnecessary chunking logic from crc64

Browse Source 
On arm64, kernel mode NEON executes with preemption enabled, so there is
no need to chunk the input by hand.

Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Link: https://lore.kernel.org/r/20260330144630.33026-8-ardb@kernel.org
Signed-off-by: Eric Biggers <ebiggers@kernel.org>
This commit is contained in:
Ard Biesheuvel
2026-03-30 16:46:32 +02:00
committed by Eric Biggers
parent 5276ea17a2
commit e0718ed60d
1 changed files with 5 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
lib/crc/arm64/crc64.h
View File

@@ -16,15 +16,13 @@ static inline u64 crc64_nvme_arch(u64 crc, const u8 *p, size_t len)
{
if (len >= 128 && cpu_have_named_feature(PMULL) &&
likely(may_use_simd())) {
do {
size_t chunk = min_t(size_t, len & ~15, SZ_4K);
size_t chunk = len & ~15;
scoped_ksimd()
crc = crc64_nvme_arm64_c(crc, p, chunk);
scoped_ksimd()
crc = crc64_nvme_arm64_c(crc, p, chunk);
p += chunk;
len -= chunk;
} while (len >= 128);
p += chunk;
len &= 15;
}
return crc64_nvme_generic(crc, p, len);
}