diff options
| author |   Steven Rostedt <srostedt@redhat.com> | 2012-08-06 16:24:11 -0400 |
|---|---|---|
| committer |   Steven Rostedt <rostedt@goodmis.org> | 2013-03-15 00:34:43 -0400 |
| commit | a7603ff4b5f7e26e67af82a4c3d05eeeb8d7b160 (patch) | |
| tree | 2d348aeb190cf6c7ba43f97419b291251d6e04c5 /kernel/trace/trace_branch.c | |
| parent | tracing: Pass the ftrace_file to the buffer lock reserve code (diff) | |
| download | linux-dev-a7603ff4b5f7e26e67af82a4c3d05eeeb8d7b160.tar.xz linux-dev-a7603ff4b5f7e26e67af82a4c3d05eeeb8d7b160.zip | |
tracing: Replace the static global per_cpu arrays with allocated per_cpu
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>
Diffstat (limited to 'kernel/trace/trace_branch.c')
| -rw-r--r-- | kernel/trace/trace_branch.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/kernel/trace/trace_branch.c b/kernel/trace/trace_branch.c index 95e96842ed29..6dadbefbb1d6 100644 --- a/kernel/trace/trace_branch.c +++ b/kernel/trace/trace_branch.c @@ -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); } |