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Subject[PATCH 1/2] tracing: Fix function graph duration format for 7-digit number
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Currently, row's width of 7-digit duration numbers not aligned with
other cases like the following example.

3) $ 3999884 us | }
3) | finish_task_switch() {
3) 0.365 us | _raw_spin_unlock_irq();
3) 3.333 us | }
3) $ 3999976 us | }
3) $ 3999979 us | } /* schedule */

As adding a single white space in case of 7-digit numbers, the format
could be unified easily as follows.

3) $ 2237472 us | }
3) | finish_task_switch() {
3) 0.364 us | _raw_spin_unlock_irq();
3) 3.125 us | }
3) $ 2237556 us | }
3) $ 2237559 us | } /* schedule */

Signed-off-by: Jungseok Lee <jungseoklee85@gmail.com>
---
kernel/trace/trace_functions_graph.c | 2 ++
1 file changed, 2 insertions(+)

diff --git a/kernel/trace/trace_functions_graph.c b/kernel/trace/trace_functions_graph.c
index 8968bf7..0bc16c4 100644
--- a/kernel/trace/trace_functions_graph.c
+++ b/kernel/trace/trace_functions_graph.c
@@ -716,6 +716,8 @@ trace_print_graph_duration(unsigned long long duration, struct trace_seq *s)
snprintf(nsecs_str, slen, "%03lu", nsecs_rem);
trace_seq_printf(s, ".%s", nsecs_str);
len += strlen(nsecs_str);
+ } else if (len == 7) {
+ len -= 1;
}

trace_seq_puts(s, " us ");
--
1.9.1


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