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Commit 9b2384da authored by Heiko Carstens's avatar Heiko Carstens Committed by Greg Kroah-Hartman
Browse files

s390/smp: __smp_rescan_cpus() - move cpumask away from stack 



[ Upstream commit 62c8dca9e194326802b43c60763f856d782b225c ]

Avoid a potentially large stack frame and overflow by making
"cpumask_t avail" a static variable. There is no concurrent
access due to the existing locking.

Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 105e4f98

arch/s390/kernel/smp.c

+1 −1
Original line number Diff line number Diff line
@@ -751,7 +751,7 @@ static int smp_add_core(struct sclp_core_entry *core, cpumask_t *avail, 
static int __smp_rescan_cpus(struct sclp_core_info *info, bool early)

{

	struct sclp_core_entry *core;

	cpumask_t avail;

	static cpumask_t avail;

	bool configured;

	u16 core_id;

	int nr, i;