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crypto: pcrypt - Optimize pcrypt_aead_init_tfm()

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The function opencodes cpumask_nth(). The dedicated helper is faster
than an open for-loop.

Signed-off-by: Yury Norov [NVIDIA] <yury.norov@gmail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Yury Norov [NVIDIA]
2025-06-04 16:47:40 -04:00
committed by Herbert Xu
parent 254923ca87
commit ea87e6c40a
1 changed files with 2 additions and 5 deletions
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7
crypto/pcrypt.c
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@@ -178,7 +178,7 @@ static int pcrypt_aead_decrypt(struct aead_request *req)
static int pcrypt_aead_init_tfm(struct crypto_aead *tfm) static int pcrypt_aead_init_tfm(struct crypto_aead *tfm)
{ {
int cpu, cpu_index; int cpu_index;
struct aead_instance *inst = aead_alg_instance(tfm); struct aead_instance *inst = aead_alg_instance(tfm);
struct pcrypt_instance_ctx *ictx = aead_instance_ctx(inst); struct pcrypt_instance_ctx *ictx = aead_instance_ctx(inst);
struct pcrypt_aead_ctx *ctx = crypto_aead_ctx(tfm); struct pcrypt_aead_ctx *ctx = crypto_aead_ctx(tfm);
@@ -187,10 +187,7 @@ static int pcrypt_aead_init_tfm(struct crypto_aead *tfm)
cpu_index = (unsigned int)atomic_inc_return(&ictx->tfm_count) % cpu_index = (unsigned int)atomic_inc_return(&ictx->tfm_count) %
cpumask_weight(cpu_online_mask); cpumask_weight(cpu_online_mask);
ctx->cb_cpu = cpumask_first(cpu_online_mask); ctx->cb_cpu = cpumask_nth(cpu_index, cpu_online_mask);
for (cpu = 0; cpu < cpu_index; cpu++)
ctx->cb_cpu = cpumask_next(ctx->cb_cpu, cpu_online_mask);
cipher = crypto_spawn_aead(&ictx->spawn); cipher = crypto_spawn_aead(&ictx->spawn);
if (IS_ERR(cipher)) if (IS_ERR(cipher))