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| author |   Steven Rostedt <srostedt@redhat.com> | 2009-06-03 11:10:44 -0400 |
|---|---|---|
| committer |   Steven Rostedt <rostedt@goodmis.org> | 2009-06-03 11:10:44 -0400 |
| commit | 563af16c30ede41eda2d614195d88e07f7c7103d (patch) | |
| tree | a56b4f3339b8850b8f1fd9064bb99d50cd99aa79 /kernel/trace | |
| parent | tracing: fix multiple use of __print_flags and __print_symbolic (diff) | |
| download | linux-dev-563af16c30ede41eda2d614195d88e07f7c7103d.tar.xz linux-dev-563af16c30ede41eda2d614195d88e07f7c7103d.zip | |
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>
Diffstat (limited to 'kernel/trace')
| -rw-r--r-- | kernel/trace/trace_output.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c index 8afeea412e77..425725c1622d 100644 --- a/kernel/trace/trace_output.c +++ b/kernel/trace/trace_output.c @@ -976,7 +976,7 @@ static enum print_line_t trace_stack_print(struct trace_iterator *iter, trace_assign_type(field, iter->ent); - if (!trace_seq_puts(s, "\n")) + if (!trace_seq_puts(s, "<stack trace>\n")) goto partial; for (i = 0; i < FTRACE_STACK_ENTRIES; i++) { if (!field->caller[i] || (field->caller[i] == ULONG_MAX)) @@ -1013,7 +1013,7 @@ static enum print_line_t trace_user_stack_print(struct trace_iterator *iter, trace_assign_type(field, iter->ent); - if (!trace_seq_putc(s, '\n')) + if (!trace_seq_puts(s, "<user stack trace>\n")) goto partial; if (!seq_print_userip_objs(field, s, flags)) |