tracing: add annotation to what type of stack trace is recorded
The current method of printing out a stack trace is to add a new line and print out the trace: yum-updatesd-3120 [002] 573.691303: => do_softirq => irq_exit => smp_apic_timer_interrupt => apic_timer_interrupt This looks a bit awkward, and if we have both stack and user stack traces running, it would be nice to have a title to tell them apart, although it is easy to tell by the output. This patch adds an annotation to the start of the stack traces: init-1 [003] 929.304979: <stack trace> => user_path_at => vfs_fstatat => vfs_stat => sys_newstat => system_call_fastpath cat-3459 [002] 1016.824040: <user stack trace> => <0000003aae6c0250> => <00007ffff4b06ae4> => <69636172742f6775> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
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@ -976,7 +976,7 @@ static enum print_line_t trace_stack_print(struct trace_iterator *iter,
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trace_assign_type(field, iter->ent);
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trace_assign_type(field, iter->ent);
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if (!trace_seq_puts(s, "\n"))
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if (!trace_seq_puts(s, "<stack trace>\n"))
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goto partial;
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goto partial;
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for (i = 0; i < FTRACE_STACK_ENTRIES; i++) {
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for (i = 0; i < FTRACE_STACK_ENTRIES; i++) {
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if (!field->caller[i] || (field->caller[i] == ULONG_MAX))
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if (!field->caller[i] || (field->caller[i] == ULONG_MAX))
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@ -1013,7 +1013,7 @@ static enum print_line_t trace_user_stack_print(struct trace_iterator *iter,
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trace_assign_type(field, iter->ent);
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trace_assign_type(field, iter->ent);
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if (!trace_seq_putc(s, '\n'))
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if (!trace_seq_puts(s, "<user stack trace>\n"))
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goto partial;
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goto partial;
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if (!seq_print_userip_objs(field, s, flags))
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if (!seq_print_userip_objs(field, s, flags))
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