Move atomic_set(&tr->underrun, 0) and atomic_set(&tr->overrun, 0)
occurrences into reset_trace_idx().
Note this leads to under/overrun being reset more often than before:
- in the trace_all_cpus case.
- from under check_critical_timing()
Signed-off-by: Karsten Wiese <[email protected]>
--- rt6-kw/kernel/latency_trace-tk2.2.c 2006-12-06 14:58:44.000000000 +0100
+++ rt6-kw/kernel/latency_trace.c 2006-12-06 15:37:08.000000000 +0100
@@ -1695,10 +1695,17 @@ __setup("preempt_thresh=", setup_preempt
static inline void notrace reset_trace_idx(int cpu, struct cpu_trace *tr)
{
if (trace_all_cpus)
- for_each_online_cpu(cpu)
- cpu_traces[cpu].trace_idx = 0;
- else
+ for_each_online_cpu(cpu) {
+ tr = cpu_traces + cpu;
+ tr->trace_idx = 0;
+ atomic_set(&tr->underrun, 0);
+ atomic_set(&tr->overrun, 0);
+ }
+ else{
tr->trace_idx = 0;
+ atomic_set(&tr->underrun, 0);
+ atomic_set(&tr->overrun, 0);
+ }
}
#ifdef CONFIG_CRITICAL_TIMING
@@ -1842,8 +1849,6 @@ __start_critical_timing(unsigned long ei
tr->critical_sequence = max_sequence;
tr->preempt_timestamp = get_monotonic_cycles();
tr->critical_start = eip;
- atomic_set(&tr->underrun, 0);
- atomic_set(&tr->overrun, 0);
reset_trace_idx(cpu, tr);
tr->latency_type = latency_type;
_trace_cmdline(cpu, tr);
@@ -2221,8 +2226,6 @@ void __trace_start_sched_wakeup(struct t
tr->preempt_timestamp = get_monotonic_cycles();
tr->latency_type = WAKEUP_LATENCY;
tr->critical_start = CALLER_ADDR0;
- atomic_set(&tr->underrun, 0);
- atomic_set(&tr->overrun, 0);
_trace_cmdline(raw_smp_processor_id(), tr);
atomic_dec(&tr->disabled);
// }
@@ -2332,8 +2335,6 @@ long user_trace_start(void)
tr->critical_sequence = max_sequence;
tr->preempt_timestamp = get_monotonic_cycles();
tr->critical_start = CALLER_ADDR0;
- atomic_set(&tr->underrun, 0);
- atomic_set(&tr->overrun, 0);
_trace_cmdline(cpu, tr);
mcount();
-
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