From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
To: benh@kernel.crashing.org, paulus@samba.org, mpe@ellerman.id.au
Cc: linuxppc-dev@lists.ozlabs.org, Kevin Hao <haokexin@gmail.com>,
"Aneesh Kumar K . V" <aneesh.kumar@linux.vnet.ibm.com>
Subject: [PATCH for-4.8 04/10] jump_label: make it possible for the archs to invoke jump_label_init() much earlier
Date: Wed, 13 Jul 2016 15:08:04 +0530 [thread overview]
Message-ID: <1468402690-5373-5-git-send-email-aneesh.kumar@linux.vnet.ibm.com> (raw)
In-Reply-To: <1468402690-5373-1-git-send-email-aneesh.kumar@linux.vnet.ibm.com>
From: Kevin Hao <haokexin@gmail.com>
For some archs (such as powerpc) would want to invoke jump_label_init()
in a much earlier stage. So check static_key_initialized in order to
make sure this function run only once.
Signed-off-by: Kevin Hao <haokexin@gmail.com>
Signed-off-by: Aneesh Kumar K.V <aneesh.kumar@linux.vnet.ibm.com>
---
Ingo did ack this patch in email
http://marc.info/?l=linux-kernel&m=144049104329961&w=2
But there was no Acked-by:
kernel/jump_label.c | 3 +++
1 file changed, 3 insertions(+)
diff --git a/kernel/jump_label.c b/kernel/jump_label.c
index 4b353e0be121..8ada9f5dc507 100644
--- a/kernel/jump_label.c
+++ b/kernel/jump_label.c
@@ -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);
--
2.7.4
next prev parent reply other threads:[~2016-07-13 9:38 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-07-13 9:38 [PATCH for-4.8_set3 00/10] Use jump label for cpu/mmu_has_feature Aneesh Kumar K.V
2016-07-13 9:38 ` [PATCH for-4.8 01/10] powerpc/mm: Add __cpu/__mmu_has_feature Aneesh Kumar K.V
2016-07-13 9:38 ` [PATCH for-4.8 02/10] powerpc/mm: Convert early cpu/mmu feature check to use the new helpers Aneesh Kumar K.V
2016-07-13 12:09 ` Benjamin Herrenschmidt
2016-07-13 13:58 ` Aneesh Kumar K.V
2016-07-13 14:06 ` Aneesh Kumar K.V
2016-07-13 14:45 ` Benjamin Herrenschmidt
2016-07-13 9:38 ` [PATCH for-4.8 03/10] powerpc/mm/radix: Add radix_set_pte to use in early init Aneesh Kumar K.V
2016-07-13 9:38 ` Aneesh Kumar K.V [this message]
2016-07-13 9:38 ` [PATCH for-4.8 05/10] powerpc: Call jump_label_init early Aneesh Kumar K.V
2016-07-13 9:38 ` [PATCH for-4.8 06/10] powerpc: kill mfvtb() Aneesh Kumar K.V
2016-07-13 9:38 ` [PATCH for-4.8 07/10] powerpc: move the cpu_has_feature to a separate file Aneesh Kumar K.V
2016-07-13 9:38 ` [PATCH for-4.8 08/10] powerpc: use the jump label for cpu_has_feature Aneesh Kumar K.V
2016-07-13 9:38 ` [PATCH for-4.8 09/10] powerpc: use jump label for mmu_has_feature Aneesh Kumar K.V
2016-07-13 9:38 ` [PATCH for-4.8 10/10] powerpc/mm: Catch the usage of cpu/mmu_has_feature before jump label init Aneesh Kumar K.V
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