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ftrace: make work with new ring buffer

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This patch ports ftrace over to the new ring buffer.

Signed-off-by: Steven Rostedt <srostedt@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Steven Rostedt 2008-09-29 23:02:41 -04:00 • committed by Ingo Molnar
parent ed56829cb3
commit 3928a8a2d9
11 changed files with 292 additions and 802 deletions
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16
kernel/trace/trace_boot.c
View file

@ -34,7 +34,7 @@ static void boot_trace_init(struct trace_array *tr)
trace_boot_enabled = 0;
for_each_cpu_mask(cpu, cpu_possible_map)
tracing_reset(tr->data[cpu]);
tracing_reset(tr, cpu);
}
static void boot_trace_ctrl_update(struct trace_array *tr)
@ -74,6 +74,7 @@ struct tracer boot_tracer __read_mostly =
void trace_boot(struct boot_trace *it)
{
struct ring_buffer_event *event;
struct trace_entry *entry;
struct trace_array_cpu *data;
unsigned long irq_flags;
@ -85,17 +86,18 @@ void trace_boot(struct boot_trace *it)
preempt_disable();
data = tr->data[smp_processor_id()];
raw_local_irq_save(irq_flags);
__raw_spin_lock(&data->lock);
entry = tracing_get_trace_entry(tr, data);
event = ring_buffer_lock_reserve(tr->buffer, sizeof(*entry),
&irq_flags);
if (!event)
goto out;
entry = ring_buffer_event_data(event);
tracing_generic_entry_update(entry, 0);
entry->type = TRACE_BOOT;
entry->field.initcall = *it;
ring_buffer_unlock_commit(tr->buffer, event, irq_flags);
__raw_spin_unlock(&data->lock);
raw_local_irq_restore(irq_flags);
trace_wake_up();
out:
preempt_enable();
}