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| author | Steven Rostedt (Red Hat) <rostedt@goodmis.org> | 2014-01-14 11:28:38 -0500 |
|---|---|---|
| committer | Steven Rostedt <rostedt@goodmis.org> | 2014-04-21 13:59:26 -0400 |
| commit | 6d9b3fa5e7f663bbfb9d2d80d46136f75319cb28 (patch) | |
| tree | eb21578a00e6e1092ba53c79a4a84e8dc8e13388 /kernel/trace/trace_irqsoff.c | |
| parent | 4104d326b670c2b66f575d2004daa28b2d1b4c8d (diff) | |
| download | linux-6d9b3fa5e7f663bbfb9d2d80d46136f75319cb28.tar.bz2 | |
tracing: Move tracing_max_latency into trace_array
In preparation for letting the latency tracers be used by instances,
remove the global tracing_max_latency variable and add a max_latency
field to the trace_array that the latency tracers will now use.
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_irqsoff.c')
| -rw-r--r-- | kernel/trace/trace_irqsoff.c | 14 |
1 files changed, 7 insertions, 7 deletions
diff --git a/kernel/trace/trace_irqsoff.c b/kernel/trace/trace_irqsoff.c index b5cb047df3e9..40aa300d3491 100644 --- a/kernel/trace/trace_irqsoff.c +++ b/kernel/trace/trace_irqsoff.c @@ -170,7 +170,7 @@ irqsoff_set_flag(struct trace_array *tr, u32 old_flags, u32 bit, int set) for_each_possible_cpu(cpu) per_cpu(tracing_cpu, cpu) = 0; - tracing_max_latency = 0; + tr->max_latency = 0; tracing_reset_online_cpus(&irqsoff_trace->trace_buffer); return start_irqsoff_tracer(irqsoff_trace, set); @@ -297,13 +297,13 @@ static void irqsoff_print_header(struct seq_file *s) /* * Should this new latency be reported/recorded? */ -static int report_latency(cycle_t delta) +static int report_latency(struct trace_array *tr, cycle_t delta) { if (tracing_thresh) { if (delta < tracing_thresh) return 0; } else { - if (delta <= tracing_max_latency) + if (delta <= tr->max_latency) return 0; } return 1; @@ -327,13 +327,13 @@ check_critical_timing(struct trace_array *tr, pc = preempt_count(); - if (!report_latency(delta)) + if (!report_latency(tr, delta)) goto out; raw_spin_lock_irqsave(&max_trace_lock, flags); /* check if we are still the max latency */ - if (!report_latency(delta)) + if (!report_latency(tr, delta)) goto out_unlock; __trace_function(tr, CALLER_ADDR0, parent_ip, flags, pc); @@ -346,7 +346,7 @@ check_critical_timing(struct trace_array *tr, data->critical_end = parent_ip; if (likely(!is_tracing_stopped())) { - tracing_max_latency = delta; + tr->max_latency = delta; update_max_tr_single(tr, current, cpu); } @@ -605,7 +605,7 @@ static void __irqsoff_tracer_init(struct trace_array *tr) set_tracer_flag(tr, TRACE_ITER_OVERWRITE, 1); set_tracer_flag(tr, TRACE_ITER_LATENCY_FMT, 1); - tracing_max_latency = 0; + tr->max_latency = 0; irqsoff_trace = tr; /* make sure that the tracer is visible */ smp_wmb(); |