x86/mce: Rename rcu_dereference_check_mce() to mce_log_get_idx_check()

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@suse.de>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Tony Luck <tony.luck@intel.com>
Link: http://lkml.kernel.org/r/1439396985-12812-12-git-send-email-bp@alien8.de
Signed-off-by: Ingo Molnar <mingo@kernel.org>

diff --git a/arch/x86/kernel/cpu/mcheck/mce.c b/arch/x86/kernel/cpu/mcheck/mce.c
index ee5272d77a165521d20937befd8e93bddc4b2661..b979711452a557bc5b8d51c49a4a464b2d9e73c6 100644 (file)
--- 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;