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Subject[PATCH -tip v2 10/10] tracing: Remove kretprobe unknown indicator from stacktrace
Date
Since the stacktrace API fixup the kretprobed address correctly,
there is no need to convert the "kretprobe_trampoline" to
"[unknown/kretprobe'd]" anymore. Remove it.

Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Acked-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
---
kernel/trace/trace_output.c | 27 ++++-----------------------
1 file changed, 4 insertions(+), 23 deletions(-)

diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
index 61255bad7e01..f5f8b081b668 100644
--- a/kernel/trace/trace_output.c
+++ b/kernel/trace/trace_output.c
@@ -346,37 +346,18 @@ int trace_output_call(struct trace_iterator *iter, char *name, char *fmt, ...)
}
EXPORT_SYMBOL_GPL(trace_output_call);

-#ifdef CONFIG_KRETPROBES
-static inline const char *kretprobed(const char *name)
-{
- static const char tramp_name[] = "kretprobe_trampoline";
- int size = sizeof(tramp_name);
-
- if (strncmp(tramp_name, name, size) == 0)
- return "[unknown/kretprobe'd]";
- return name;
-}
-#else
-static inline const char *kretprobed(const char *name)
-{
- return name;
-}
-#endif /* CONFIG_KRETPROBES */
-
void
trace_seq_print_sym(struct trace_seq *s, unsigned long address, bool offset)
{
#ifdef CONFIG_KALLSYMS
- char str[KSYM_SYMBOL_LEN];
- const char *name;
+ char name[KSYM_SYMBOL_LEN];

if (offset)
- sprint_symbol(str, address);
+ sprint_symbol(name, address);
else
- kallsyms_lookup(address, NULL, NULL, NULL, str);
- name = kretprobed(str);
+ kallsyms_lookup(address, NULL, NULL, NULL, name);

- if (name && strlen(name)) {
+ if (strlen(name)) {
trace_seq_puts(s, name);
return;
}
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