x86/tsc: Get rid of rdtscll()

Commit 99770737 ("x86/asm/tsc: Add rdtscll() merge helper") added
rdtscll() in August 2015 along with the comment:

 /* Deprecated, keep it for a cycle for easier merging: */

12 cycles later it's really overdue for removal.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

arch/x86/events/msr.c

@@ -188,10 +188,11 @@ static inline u64 msr_read_counter(struct perf_event *event)
 	if (event->hw.event_base)
 		rdmsrl(event->hw.event_base, now);
 	else
-		rdtscll(now);
+		now = rdtsc_ordered();
 
 	return now;
 }
+
 static void msr_event_update(struct perf_event *event)
 {
 	u64 prev, now;

arch/x86/include/asm/msr.h

@@ -218,9 +218,6 @@ static __always_inline unsigned long long rdtsc_ordered(void)
 	return rdtsc();
 }
 
-/* Deprecated, keep it for a cycle for easier merging: */
-#define rdtscll(now)	do { (now) = rdtsc_ordered(); } while (0)
-
 static inline unsigned long long native_read_pmc(int counter)
 {
 	DECLARE_ARGS(val, low, high);

arch/x86/kernel/cpu/mcheck/mce-inject.c

@@ -491,7 +491,7 @@ static void do_inject(void)
 	unsigned int cpu = i_mce.extcpu;
 	u8 b = i_mce.bank;
 
-	rdtscll(i_mce.tsc);
+	i_mce.tsc = rdtsc_ordered();
 
 	if (i_mce.misc)
 		i_mce.status |= MCI_STATUS_MISCV;