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| author | Ard Biesheuvel <ardb@kernel.org> | 2026-03-30 16:46:32 +0200 |
|---|---|---|
| committer | Eric Biggers <ebiggers@kernel.org> | 2026-04-02 16:14:53 -0700 |
| commit | e0718ed60d60299840cfc2a408eb26042a20d186 (patch) | |
| tree | 06d3d11d80b662e44a57b6a7672e4674ceb8463c /lib | |
| parent | 5276ea17a23c829d4e4417569abff71a1c8342d9 (diff) | |
| download | lwn-e0718ed60d60299840cfc2a408eb26042a20d186.tar.gz lwn-e0718ed60d60299840cfc2a408eb26042a20d186.zip | |
lib/crc: arm64: Drop unnecessary chunking logic from crc64
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>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/crc/arm64/crc64.h | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/lib/crc/arm64/crc64.h b/lib/crc/arm64/crc64.h index cc65abeee24c..60151ec3035a 100644 --- a/lib/crc/arm64/crc64.h +++ b/lib/crc/arm64/crc64.h @@ -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); } |