linux-kernel - [RFC PATCH 2/4] x86/mce: Rename rcu_dereference_check_mce() to mce_log_get_idx

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Message-Id: <1437554428-24788-3-git-send-email-bp@alien8.de>
Date:	Wed, 22 Jul 2015 10:40:26 +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 2/4] x86/mce: Rename rcu_dereference_check_mce() to mce_log_get_idx_check()

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

The "rcu_" prefix misleads for it being a proper RCU interface which
is not. It basically checks whether we're preemptible or holding the
chrdev_read mutex.

Rename it accordingly.

Signed-off-by: Borislav Petkov <bp@...e.de>
Cc: "Paul E. McKenney" <paulmck@...ux.vnet.ibm.com>
---
 arch/x86/kernel/cpu/mcheck/mce.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index 5a19adb86b8f..36c065e6fa94 100644
--- a/arch/x86/kernel/cpu/mcheck/mce.c
+++ b/arch/x86/kernel/cpu/mcheck/mce.c
@@ -52,11 +52,11 @@
 
 static DEFINE_MUTEX(mce_chrdev_read_mutex);
 
-#define rcu_dereference_check_mce(p) \
+#define mce_log_get_idx_check(p) \
 ({ \
 	rcu_lockdep_assert(rcu_read_lock_sched_held() || \
 			   lockdep_is_held(&mce_chrdev_read_mutex), \
-			   "suspicious rcu_dereference_check_mce() usage"); \
+			   "suspicious mce_log_get_idx_check() usage"); \
 	smp_load_acquire(&(p)); \
 })
 
@@ -165,7 +165,7 @@ void mce_log(struct mce *mce)
 	mce->finished = 0;
 	wmb();
 	for (;;) {
-		entry = rcu_dereference_check_mce(mcelog.next);
+		entry = mce_log_get_idx_check(mcelog.next);
 		for (;;) {
 
 			/*
@@ -1812,7 +1812,7 @@ static ssize_t mce_chrdev_read(struct file *filp, char __user *ubuf,
 			goto out;
 	}
 
-	next = rcu_dereference_check_mce(mcelog.next);
+	next = mce_log_get_idx_check(mcelog.next);
 
 	/* Only supports full reads right now */
 	err = -EINVAL;
-- 
2.5.0.rc2.28.g6003e7f

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