From cc491d8e6486c56e07e60d9992cd56f63dc9fd6c Mon Sep 17 00:00:00 2001 From: Daniel Jordan Date: Thu, 5 Sep 2019 21:40:26 -0400 Subject: padata, pcrypt: take CPU hotplug lock internally in padata_alloc_possible With pcrypt's cpumask no longer used, take the CPU hotplug lock inside padata_alloc_possible. Useful later in the series for avoiding nested acquisition of the CPU hotplug lock in padata when padata_alloc_possible is allocating an unbound workqueue. Without this patch, this nested acquisition would happen later in the series: pcrypt_init_padata get_online_cpus alloc_padata_possible alloc_padata alloc_workqueue(WQ_UNBOUND) // later in the series alloc_and_link_pwqs apply_wqattrs_lock get_online_cpus // recursive rwsem acquisition Signed-off-by: Daniel Jordan Acked-by: Steffen Klassert Cc: Herbert Xu Cc: Lai Jiangshan Cc: Peter Zijlstra Cc: Tejun Heo Cc: linux-crypto@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Herbert Xu --- crypto/pcrypt.c | 4 ---- 1 file changed, 4 deletions(-) (limited to 'crypto') diff --git a/crypto/pcrypt.c b/crypto/pcrypt.c index 2ec36e6a132f..543792e0ebf0 100644 --- a/crypto/pcrypt.c +++ b/crypto/pcrypt.c @@ -308,8 +308,6 @@ static int pcrypt_init_padata(struct padata_instance **pinst, const char *name) { int ret = -ENOMEM; - get_online_cpus(); - *pinst = padata_alloc_possible(name); if (!*pinst) return ret; @@ -318,8 +316,6 @@ static int pcrypt_init_padata(struct padata_instance **pinst, const char *name) if (ret) padata_free(*pinst); - put_online_cpus(); - return ret; } -- cgit v1.2.3