[PATCH -rt 5/8] latency tracing: use now() consistently

Just get_monotonic_cycles() switched to now() ..

Signed-off-by: Daniel Walker <[email protected]>

---
 kernel/latency_trace.c |   18 +++++++++---------
 1 file changed, 9 insertions(+), 9 deletions(-)

Index: linux-2.6.22/kernel/latency_trace.c
===================================================================
--- linux-2.6.22.orig/kernel/latency_trace.c
+++ linux-2.6.22/kernel/latency_trace.c
@@ -1751,7 +1751,7 @@ check_critical_timing(int cpu, struct cp
 	 * as long as possible:
 	 */
 	T0 = tr->preempt_timestamp;
-	T1 = get_monotonic_cycles();
+	T1 = now();
 	delta = T1-T0;
 
 	local_save_flags(flags);
@@ -1765,7 +1765,7 @@ check_critical_timing(int cpu, struct cp
 	 * might change it (it can only get larger so the latency
 	 * is fair to be reported):
 	 */
-	T2 = get_monotonic_cycles();
+	T2 = now();
 
 	delta = T2-T0;
 
@@ -1815,7 +1815,7 @@ check_critical_timing(int cpu, struct cp
 	printk(" =>   ended at timestamp %lu: ", t1);
 	print_symbol("<%s>\n", tr->critical_end);
 	dump_stack();
-	t1 = cycles_to_usecs(get_monotonic_cycles());
+	t1 = cycles_to_usecs(now());
 	printk(" =>   dump-end timestamp %lu\n\n", t1);
 #endif
 
@@ -1825,7 +1825,7 @@ check_critical_timing(int cpu, struct cp
 
 out:
 	tr->critical_sequence = max_sequence;
-	tr->preempt_timestamp = get_monotonic_cycles();
+	tr->preempt_timestamp = now();
 	tr->early_warning = 0;
 	reset_trace_idx(cpu, tr);
 	_trace_cmdline(cpu, tr);
@@ -1874,7 +1874,7 @@ __start_critical_timing(unsigned long ei
 	atomic_inc(&tr->disabled);
 
 	tr->critical_sequence = max_sequence;
-	tr->preempt_timestamp = get_monotonic_cycles();
+	tr->preempt_timestamp = now();
 	tr->critical_start = eip;
 	reset_trace_idx(cpu, tr);
 	tr->latency_type = latency_type;
@@ -2196,7 +2196,7 @@ check_wakeup_timing(struct cpu_trace *tr
 		goto out;
 
 	T0 = tr->preempt_timestamp;
-	T1 = get_monotonic_cycles();
+	T1 = now();
 	/*
 	 * Any wraparound or time warp and we are out:
 	 */
@@ -2314,7 +2314,7 @@ void __trace_start_sched_wakeup(struct t
 //	if (!atomic_read(&tr->disabled)) {
 		atomic_inc(&tr->disabled);
 		tr->critical_sequence = max_sequence;
-		tr->preempt_timestamp = get_monotonic_cycles();
+		tr->preempt_timestamp = now();
 		tr->latency_type = WAKEUP_LATENCY;
 		tr->critical_start = CALLER_ADDR0;
 		_trace_cmdline(raw_smp_processor_id(), tr);
@@ -2426,7 +2426,7 @@ long user_trace_start(void)
 
 	atomic_inc(&tr->disabled);
 	tr->critical_sequence = max_sequence;
-	tr->preempt_timestamp = get_monotonic_cycles();
+	tr->preempt_timestamp = now();
 	tr->critical_start = CALLER_ADDR0;
 	_trace_cmdline(cpu, tr);
 	atomic_dec(&tr->disabled);
@@ -2486,7 +2486,7 @@ long user_trace_stop(void)
 		unsigned long long tmp0;
 
 		T0 = tr->preempt_timestamp;
-		T1 = get_monotonic_cycles();
+		T1 = now();
 		tmp0 = preempt_max_latency;
 		if (T1 < T0)
 			T0 = T1;

-- 
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to [email protected]
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/

---

• References:
  • [PATCH -rt 1/8] introduce PICK_FUNCTION
    • From: Daniel Walker <[email protected]>

• Prev by Date: [PATCH -rt 4/8] fork: desched_thread comment rework.
• Next by Date: [PATCH -rt 8/8] stop critical timing in idle.
• Previous by thread: [PATCH -rt 4/8] fork: desched_thread comment rework.
• Next by thread: [PATCH -rt 8/8] stop critical timing in idle.
• Index(es):
  • Date
  • Thread

[Index of Archives]     [Kernel Newbies]     [Netfilter]     [Bugtraq]     [Photo]     [Stuff]     [Gimp]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Video 4 Linux]     [Linux for the blind]     [Linux Resources]