linux-kernel - [RFC PATCH 3/4] x86/mce: Add a wrapper around mce

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Date:	Wed, 22 Jul 2015 10:40:27 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	X86-ML <x86@...nel.org>
Cc:	Tony Luck <tony.luck@...el.com>,
	Aravind Gopalakrishnan <Aravind.Gopalakrishnan@....com>,
	LKML <linux-kernel@...r.kernel.org>,
	Linux EDAC <linux-edac@...r.kernel.org>
Subject: [RFC PATCH 3/4] x86/mce: Add a wrapper around mce_log() for injection

From: Borislav Petkov <bp@...e.de>

Will be used by an injector module in a following patch.

Signed-off-by: Borislav Petkov <bp@...e.de>
---
 arch/x86/kernel/cpu/mcheck/mce-internal.h | 2 ++
 arch/x86/kernel/cpu/mcheck/mce.c          | 7 +++++++
 2 files changed, 9 insertions(+)

diff --git a/arch/x86/kernel/cpu/mcheck/mce-internal.h b/arch/x86/kernel/cpu/mcheck/mce-internal.h
index 70d43f541bed..f5e507e6ae6f 100644
--- a/arch/x86/kernel/cpu/mcheck/mce-internal.h
+++ b/arch/x86/kernel/cpu/mcheck/mce-internal.h
@@ -79,3 +79,5 @@ static inline int apei_clear_mce(u64 record_id)
 	return -EINVAL;
 }
 #endif
+
+void mce_inject_log(struct mce *m);
diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 36c065e6fa94..64d1ae916428 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -199,6 +199,13 @@ void mce_log(struct mce *mce)
 	set_bit(0, &mce_need_notify);
 }
 
+void mce_inject_log(struct mce *m)
+{
+	mutex_lock(&mce_chrdev_read_mutex);
+	mce_log(m);
+	mutex_unlock(&mce_chrdev_read_mutex);
+}
+
 static struct notifier_block mce_srao_nb;
 
 void mce_register_decode_chain(struct notifier_block *nb)
-- 
2.5.0.rc2.28.g6003e7f

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