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oprofile: modify op_cpu_buffer_read_entry()

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This implements the support of samples with attached data.

Signed-off-by: Robert Richter <robert.richter@amd.com>
This commit is contained in:
Robert Richter
2008-12-30 04:10:46 +01:00
parent 2cc28b9f26
commit 2d87b14cf8
3 changed files with 25 additions and 14 deletions
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14
drivers/oprofile/cpu_buffer.c
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@@ -182,20 +182,28 @@ int op_cpu_buffer_write_commit(struct op_entry *entry)
entry->irq_flags);
}
struct op_sample *op_cpu_buffer_read_entry(int cpu)
struct op_sample *op_cpu_buffer_read_entry(struct op_entry *entry, int cpu)
{
struct ring_buffer_event *e;
e = ring_buffer_consume(op_ring_buffer_read, cpu, NULL);
if (e)
return ring_buffer_event_data(e);
goto event;
if (ring_buffer_swap_cpu(op_ring_buffer_read,
op_ring_buffer_write,
cpu))
return NULL;
e = ring_buffer_consume(op_ring_buffer_read, cpu, NULL);
if (e)
return ring_buffer_event_data(e);
goto event;
return NULL;
event:
entry->event = e;
entry->sample = ring_buffer_event_data(e);
entry->size = (ring_buffer_event_length(e) - sizeof(struct op_sample))
/ sizeof(entry->sample->data[0]);
entry->data = entry->sample->data;
return entry->sample;
}
unsigned long op_cpu_buffer_entries(int cpu)