From a5bde5d8fde8a8cb28e59a672d5ddc5b9c1e7656 Mon Sep 17 00:00:00 2001 From: Breno Leitao Date: Wed, 5 Aug 2026 07:52:36 -0700 Subject: workqueue: skip the node_nr_active update for non-unbound workqueues apply_wqattrs_commit() updates node_nr_active->max unconditionally. wq->node_nr_active[] is only allocated for unbound workqueues, so guard the call before per-cpu workqueues start using this path. No functional change: only unbound workqueues reach apply_wqattrs_*() today. Signed-off-by: Breno Leitao Signed-off-by: Tejun Heo --- lib/crypto/arm/blake2b.h | 40 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 40 insertions(+) create mode 100644 lib/crypto/arm/blake2b.h (limited to 'lib/crypto/arm/blake2b.h') diff --git a/lib/crypto/arm/blake2b.h b/lib/crypto/arm/blake2b.h new file mode 100644 index 000000000..5c7649852 --- /dev/null +++ b/lib/crypto/arm/blake2b.h @@ -0,0 +1,40 @@ +/* SPDX-License-Identifier: GPL-2.0-or-later */ +/* + * BLAKE2b digest algorithm, NEON accelerated + * + * Copyright 2020 Google LLC + */ + +#include +#include + +static __ro_after_init DEFINE_STATIC_KEY_FALSE(have_neon); + +asmlinkage void blake2b_compress_neon(struct blake2b_ctx *ctx, + const u8 *data, size_t nblocks, u32 inc); + +static void blake2b_compress(struct blake2b_ctx *ctx, + const u8 *data, size_t nblocks, u32 inc) +{ + if (!static_branch_likely(&have_neon) || !may_use_simd()) { + blake2b_compress_generic(ctx, data, nblocks, inc); + return; + } + do { + const size_t blocks = min_t(size_t, nblocks, + SZ_4K / BLAKE2B_BLOCK_SIZE); + + scoped_ksimd() + blake2b_compress_neon(ctx, data, blocks, inc); + + data += blocks * BLAKE2B_BLOCK_SIZE; + nblocks -= blocks; + } while (nblocks); +} + +#define blake2b_mod_init_arch blake2b_mod_init_arch +static void blake2b_mod_init_arch(void) +{ + if (elf_hwcap & HWCAP_NEON) + static_branch_enable(&have_neon); +} -- cgit v1.3.1