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perf auxtrace: Make auxtrace_queues__add_buffer() return buffer_ptr 

In preparation for supporting AUX area sampling buffers,
auxtrace_queues__add_buffer() needs to be more generic. To that end, make
it return buffer_ptr instead of the caller.

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1520327598-1317-6-git-send-email-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Adrian Hunter 2018-03-06 11:13:16 +02:00 committed by Arnaldo Carvalho de Melo
parent a356a59799
commit 4c4548437c
1 changed files with 15 additions and 8 deletions
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23
tools/perf/util/auxtrace.c
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@ -305,8 +305,11 @@ static int auxtrace_queues__split_buffer(struct auxtrace_queues *queues,
static int auxtrace_queues__add_buffer(struct auxtrace_queues *queues,
struct perf_session *session,
unsigned int idx,
struct auxtrace_buffer *buffer)
struct auxtrace_buffer *buffer,
struct auxtrace_buffer **buffer_ptr)
{
int err;
if (session->one_mmap) {
buffer->data = buffer->data_offset - session->one_mmap_offset +
session->one_mmap_addr;
@ -317,14 +320,20 @@ static int auxtrace_queues__add_buffer(struct auxtrace_queues *queues,
buffer->data_needs_freeing = true;
} else if (BITS_PER_LONG == 32 &&
buffer->size > BUFFER_LIMIT_FOR_32_BIT) {
int err;
err = auxtrace_queues__split_buffer(queues, idx, buffer);
if (err)
return err;
}
return auxtrace_queues__queue_buffer(queues, idx, buffer);
err = auxtrace_queues__queue_buffer(queues, idx, buffer);
if (err)
return err;
/* FIXME: Doesn't work for split buffer */
if (buffer_ptr)
*buffer_ptr = buffer;
return 0;
}
static bool filter_cpu(struct perf_session *session, int cpu)
@ -359,13 +368,11 @@ int auxtrace_queues__add_event(struct auxtrace_queues *queues,
buffer->size = event->auxtrace.size;
idx = event->auxtrace.idx;
err = auxtrace_queues__add_buffer(queues, session, idx, buffer);
err = auxtrace_queues__add_buffer(queues, session, idx, buffer,
buffer_ptr);
if (err)
goto out_err;
if (buffer_ptr)
*buffer_ptr = buffer;
return 0;
out_err: