diff options
| author | Masami Hiramatsu <mhiramat@kernel.org> | 2018-04-25 21:20:28 +0900 |
|---|---|---|
| committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2018-10-10 22:19:10 -0400 |
| commit | 60c2e0cebfd01bd1bc5e8843f063264148d6b2bb (patch) | |
| tree | 7083e4e121573121c54a3b4ce5e9c7823def09a0 /kernel/trace/trace_probe.c | |
| parent | 9b960a38835fcaf977f20dcc34ce9e54ff9563bd (diff) | |
tracing: probeevent: Add symbol type
Add "symbol" type to probeevent, which is an alias of u32 or u64
(depends on BITS_PER_LONG). This shows the result value in
symbol+offset style. This type is only available with kprobe
events.
Link: http://lkml.kernel.org/r/152465882860.26224.14779072294412467338.stgit@devbox
Signed-off-by: Masami Hiramatsu <mhiramat@kernel.org>
Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Diffstat (limited to 'kernel/trace/trace_probe.c')
| -rw-r--r-- | kernel/trace/trace_probe.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/kernel/trace/trace_probe.c b/kernel/trace/trace_probe.c index d119bf8c3b4f..1e7e0618577d 100644 --- a/kernel/trace/trace_probe.c +++ b/kernel/trace/trace_probe.c @@ -46,6 +46,13 @@ DEFINE_BASIC_PRINT_TYPE_FUNC(x16, u16, "0x%x") DEFINE_BASIC_PRINT_TYPE_FUNC(x32, u32, "0x%x") DEFINE_BASIC_PRINT_TYPE_FUNC(x64, u64, "0x%Lx") +int PRINT_TYPE_FUNC_NAME(symbol)(struct trace_seq *s, void *data, void *ent) +{ + trace_seq_printf(s, "%pS", (void *)*(unsigned long *)data); + return !trace_seq_has_overflowed(s); +} +const char PRINT_TYPE_FMT_NAME(symbol)[] = "%pS"; + /* Print type function for string type */ int PRINT_TYPE_FUNC_NAME(string)(struct trace_seq *s, void *data, void *ent) { @@ -79,6 +86,7 @@ static const struct fetch_type probe_fetch_types[] = { ASSIGN_FETCH_TYPE_ALIAS(x16, u16, u16, 0), ASSIGN_FETCH_TYPE_ALIAS(x32, u32, u32, 0), ASSIGN_FETCH_TYPE_ALIAS(x64, u64, u64, 0), + ASSIGN_FETCH_TYPE_ALIAS(symbol, ADDR_FETCH_TYPE, ADDR_FETCH_TYPE, 0), ASSIGN_FETCH_TYPE_END }; |