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Better handling of events without stacktraces

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This commit is contained in:
Søren Sandmann Pedersen
2009-09-08 02:59:04 -04:00
parent 23147e1141
commit 6dabcefec5
3 changed files with 23 additions and 5 deletions
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24
collector.c
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@ -237,7 +237,7 @@ on_read (gpointer data)
skip_samples = in_dead_period (collector);
while (head - tail >= sizeof (struct perf_event_header))
{
{
struct perf_event_header *header = (void *)(counter->data + (tail & mask));
if (header->size > head - tail)
@ -473,10 +473,28 @@ process_sample (Collector *collector,
{
uint64_t *ips;
int n_ips;
if (sample->n_ips == 0)
{
ips = &sample->ip;
n_ips = 1;
uint64_t trace[3];
if (sample->header.misc & PERF_EVENT_MISC_KERNEL)
{
trace[0] = PERF_CONTEXT_KERNEL;
trace[1] = sample->ip;
trace[2] = PERF_CONTEXT_USER;
ips = trace;
n_ips = 3;
}
else
{
trace[0] = PERF_CONTEXT_USER;
trace[1] = sample->ip;
ips = trace;
n_ips = 2;
}
}
else
{