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authorRobert Richter <robert.richter@amd.com>2008-12-30 04:10:46 +0100
committerRobert Richter <robert.richter@amd.com>2009-01-07 22:40:02 +0100
commit2d87b14cf8d0b07720de26d90789d02124141616 (patch)
tree418285e8cd7127c6207ac9a3e1acf8f0f3c2282f /drivers/oprofile/cpu_buffer.c
parent2cc28b9f261dd28d69767a34682ce55a27d928ed (diff)
oprofile: modify op_cpu_buffer_read_entry()
This implements the support of samples with attached data. Signed-off-by: Robert Richter <robert.richter@amd.com>
Diffstat (limited to 'drivers/oprofile/cpu_buffer.c')
-rw-r--r--drivers/oprofile/cpu_buffer.c14
1 files changed, 11 insertions, 3 deletions
diff --git a/drivers/oprofile/cpu_buffer.c b/drivers/oprofile/cpu_buffer.c
index 934ff159e70e..400f7fcffdbe 100644
--- a/drivers/oprofile/cpu_buffer.c
+++ b/drivers/oprofile/cpu_buffer.c
@@ -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)