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Show the "-- kernel --" marker in kernel threads

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The innermost context is normally user mode, so we don't show. For
kernel threads, the innermost context is the kernel, so don't filter
it out.
This commit is contained in:
Søren Sandmann Pedersen
2009-10-21 12:28:43 -04:00
parent 393a26dad6
commit ecb15e0b7f
1 changed files with 12 additions and 1 deletions
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13
tracker.c
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@ -932,7 +932,7 @@ process_sample (state_t *state, StackStash *resolved, sample_t *sample)
return;
}
len = 4;
len = 5;
for (n = sample->trace; n != NULL; n = n->parent)
len++;
@ -969,6 +969,17 @@ process_sample (state_t *state, StackStash *resolved, sample_t *sample)
resolved_traces[len++] = POINTER_TO_U64 (symbol);
}
if (context && context->context != PERF_CONTEXT_USER)
{
/* Kernel threads do not have a user part, so we end up here
* without ever getting a user context. If this happens,
* add the '- - kernel - - ' name, so that kernel threads
* are properly blamed on the kernel
*/
resolved_traces[len++] =
POINTER_TO_U64 (unique_dup (state->unique_symbols, context->name));
}
cmdline = make_message (state, "[%s]", process->comm);
resolved_traces[len++] = POINTER_TO_U64 (cmdline);