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jump_label: Make it possible for arches to invoke jump_label_init() earlier

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Some arches (powerpc at least) would like to invoke jump_label_init()
much earlier in boot. So check static_key_initialized in order to make
sure this function runs only once.

LGTM-by: Ingo (http://marc.info/?l=linux-kernel&m=144049104329961&w=2)
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Kevin Hao 2016-07-23 14:42:37 +05:30 committed by Michael Ellerman
parent b8f1b4f860
commit e3f91083fa
1 changed files with 3 additions and 0 deletions
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3
kernel/jump_label.c
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@ -235,6 +235,9 @@ void __init jump_label_init(void)
struct static_key *key = NULL;
struct jump_entry *iter;
if (static_key_initialized)
return;
jump_label_lock();
jump_label_sort_entries(iter_start, iter_stop);