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tracing: Replace the static global per_cpu arrays with allocated per_cpu

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The global and max-tr currently use static per_cpu arrays for the CPU data
descriptors. But in order to get new allocated trace_arrays, they need to
be allocated per_cpu arrays. Instead of using the static arrays, switch
the global and max-tr to use allocated data.

Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt
2012-08-06 16:24:11 -04:00
committed by Steven Rostedt
parent ccb469a198
commit a7603ff4b5
10 changed files with 80 additions and 62 deletions
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6
kernel/trace/trace_branch.c
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@@ -32,6 +32,7 @@ probe_likely_condition(struct ftrace_branch_data *f, int val, int expect)
{
struct ftrace_event_call *call = &event_branch;
struct trace_array *tr = branch_tracer;
struct trace_array_cpu *data;
struct ring_buffer_event *event;
struct trace_branch *entry;
struct ring_buffer *buffer;
@@ -51,7 +52,8 @@ probe_likely_condition(struct ftrace_branch_data *f, int val, int expect)
local_irq_save(flags);
cpu = raw_smp_processor_id();
if (atomic_inc_return(&tr->data[cpu]->disabled) != 1)
data = per_cpu_ptr(tr->data, cpu);
if (atomic_inc_return(&data->disabled) != 1)
goto out;
pc = preempt_count();
@@ -80,7 +82,7 @@ probe_likely_condition(struct ftrace_branch_data *f, int val, int expect)
__buffer_unlock_commit(buffer, event);
out:
atomic_dec(&tr->data[cpu]->disabled);
atomic_dec(&data->disabled);
local_irq_restore(flags);
}