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tracing: Add stack dump to trace_printk if stacktrace option is set

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If the ftrace stacktrace option is set, then add the stack dumps to
trace_printk.

Requested-by: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt
2010-01-06 17:27:11 -05:00
committed by Steven Rostedt
parent dfaa9e2c57
commit d931369b74
1 changed files with 6 additions and 2 deletions
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8
kernel/trace/trace.c
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@@ -1392,8 +1392,10 @@ int trace_vbprintk(unsigned long ip, const char *fmt, va_list args)
entry->fmt = fmt; entry->fmt = fmt;
memcpy(entry->buf, trace_buf, sizeof(u32) * len); memcpy(entry->buf, trace_buf, sizeof(u32) * len);
if (!filter_check_discard(call, entry, buffer, event)) if (!filter_check_discard(call, entry, buffer, event)) {
ring_buffer_unlock_commit(buffer, event); ring_buffer_unlock_commit(buffer, event);
ftrace_trace_stack(buffer, flags, 6, pc);
}
out_unlock: out_unlock:
arch_spin_unlock(&trace_buf_lock); arch_spin_unlock(&trace_buf_lock);
@@ -1466,8 +1468,10 @@ int trace_array_vprintk(struct trace_array *tr,
memcpy(&entry->buf, trace_buf, len); memcpy(&entry->buf, trace_buf, len);
entry->buf[len] = '\0'; entry->buf[len] = '\0';
if (!filter_check_discard(call, entry, buffer, event)) if (!filter_check_discard(call, entry, buffer, event)) {
ring_buffer_unlock_commit(buffer, event); ring_buffer_unlock_commit(buffer, event);
ftrace_trace_stack(buffer, irq_flags, 6, pc);
}
out_unlock: out_unlock:
arch_spin_unlock(&trace_buf_lock); arch_spin_unlock(&trace_buf_lock);