[PATCH v3 2/2] trace: remove kretprobed checks
From: Aleksa Sarai <hidden>
Date: 2018-11-01 08:36:35
Also in:
linux-doc, linux-kselftest, lkml
Subsystem:
the rest, tracing · Maintainers:
Linus Torvalds, Steven Rostedt, Masami Hiramatsu
This is effectively a reversion of commit 76094a2cf46e ("ftrace:
distinguish kretprobe'd functions in trace logs"), as the checking of
kretprobe_trampoline *for tracing* is no longer necessary with the new
kretprobe stack trace changes.
Signed-off-by: Aleksa Sarai <redacted>
---
kernel/trace/trace_output.c | 34 ++++------------------------------
1 file changed, 4 insertions(+), 30 deletions(-)
diff --git a/kernel/trace/trace_output.c b/kernel/trace/trace_output.c
index 6e6cc64faa38..951de16bd4fd 100644
--- a/kernel/trace/trace_output.c
+++ b/kernel/trace/trace_output.c@@ -321,36 +321,14 @@ 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 */ - static void seq_print_sym_short(struct trace_seq *s, const char *fmt, unsigned long address) { char str[KSYM_SYMBOL_LEN]; #ifdef CONFIG_KALLSYMS - const char *name; - kallsyms_lookup(address, NULL, NULL, NULL, str); - - name = kretprobed(str); - - if (name && strlen(name)) { - trace_seq_printf(s, fmt, name); + if (strlen(str)) { + trace_seq_printf(s, fmt, str); return; } #endif
@@ -364,13 +342,9 @@ seq_print_sym_offset(struct trace_seq *s, const char *fmt, { char str[KSYM_SYMBOL_LEN]; #ifdef CONFIG_KALLSYMS - const char *name; - sprint_symbol(str, address); - name = kretprobed(str); - - if (name && strlen(name)) { - trace_seq_printf(s, fmt, name); + if (strlen(str)) { + trace_seq_printf(s, fmt, str); return; } #endif
--
2.19.1