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authorwalimis <walimisdev@gmail.com>2009-06-03 16:01:30 +0800
committerSteven Rostedt <rostedt@goodmis.org>2009-06-03 10:25:30 -0400
commit048dc50c5e7eada19ebabbad70b7966d14283d41 (patch)
tree2d81fa88cfb5ebd5ee2622b4eb7632b1f369a567 /kernel
parentf11b3f4e2932bfdcfc458ab8d1ece62724ceabfc (diff)
downloadop-kernel-dev-048dc50c5e7eada19ebabbad70b7966d14283d41.zip
op-kernel-dev-048dc50c5e7eada19ebabbad70b7966d14283d41.tar.gz
tracing/events: fix output format of user stack
According to "events/ftrace/user_stack/format", fix the output of user stack. before fix: sh-1073 [000] 31.137561: <b7f274fe> <- <0804e33c> <- <080835c1> after fix: sh-1072 [000] 37.039329: => <b7f8a4fe> => <0804e33c> => <080835c1> Signed-off-by: walimis <walimisdev@gmail.com> LKML-Reference: <1244016090-7814-3-git-send-email-walimisdev@gmail.com> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
Diffstat (limited to 'kernel')
-rw-r--r--kernel/trace/trace_output.c11
1 files changed, 7 insertions, 4 deletions
diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
index 64596a5..8dadbbb 100644
--- a/kernel/trace/trace_output.c
+++ b/kernel/trace/trace_output.c
@@ -389,17 +389,20 @@ seq_print_userip_objs(const struct userstack_entry *entry, struct trace_seq *s,
if (ip == ULONG_MAX || !ret)
break;
- if (i && ret)
- ret = trace_seq_puts(s, " <- ");
+ if (ret)
+ ret = trace_seq_puts(s, " => ");
if (!ip) {
if (ret)
ret = trace_seq_puts(s, "??");
+ if (ret)
+ ret = trace_seq_puts(s, "\n");
continue;
}
if (!ret)
break;
if (ret)
ret = seq_print_user_ip(s, mm, ip, sym_flags);
+ ret = trace_seq_puts(s, "\n");
}
if (mm)
@@ -1012,10 +1015,10 @@ static enum print_line_t trace_user_stack_print(struct trace_iterator *iter,
trace_assign_type(field, iter->ent);
- if (!seq_print_userip_objs(field, s, flags))
+ if (!trace_seq_putc(s, '\n'))
goto partial;
- if (!trace_seq_putc(s, '\n'))
+ if (!seq_print_userip_objs(field, s, flags))
goto partial;
return TRACE_TYPE_HANDLED;
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