Commit-ID: c7b84ecada9a8b7fe3e6c081e70801703897ed5d
Gitweb: http://git.kernel.org/tip/c7b84ecada9a8b7fe3e6c081e70801703897ed5d
Author: Steven Rostedt <srostedt@xxxxxxxxxx>
AuthorDate: Fri, 11 May 2012 20:54:53 -0400
Committer: Steven Rostedt <rostedt@xxxxxxxxxxx>
CommitDate: Fri, 2 Nov 2012 10:21:50 -0400
tracing: Remove unused function unregister_tracer()
The function register_tracer() is only used by kernel core code,
that never needs to remove the tracer. As trace_events have become
the main way to add new tracing to the kernel, the need to
unregister a tracer has diminished. Remove the unused function
unregister_tracer(). If a need arises where we need it, then we
can always add it back.
Signed-off-by: Steven Rostedt <rostedt@xxxxxxxxxxx>
---
kernel/trace/trace.c | 26 --------------------------
kernel/trace/trace.h | 1 -
2 files changed, 0 insertions(+), 27 deletions(-)
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c
index 6ed6013..d1d8039 100644
--- a/kernel/trace/trace.c
+++ b/kernel/trace/trace.c
@@ -882,32 +882,6 @@ int register_tracer(struct tracer *type)
return ret;
}
-void unregister_tracer(struct tracer *type)
-{
- struct tracer **t;
-
- mutex_lock(&trace_types_lock);
- for (t = &trace_types; *t; t = &(*t)->next) {
- if (*t == type)
- goto found;
- }
- pr_info("Tracer %s not registered\n", type->name);
- goto out;
-
- found:
- *t = (*t)->next;
-
- if (type == current_trace && tracer_enabled) {
- tracer_enabled = 0;
- tracing_stop();
- if (current_trace->stop)
- current_trace->stop(&global_trace);
- current_trace = &nop_trace;
- }
-out:
- mutex_unlock(&trace_types_lock);
-}
-
void tracing_reset(struct trace_array *tr, int cpu)
{
struct ring_buffer *buffer = tr->buffer;
diff --git a/kernel/trace/trace.h b/kernel/trace/trace.h
index 839ae00..3e8a176 100644
--- a/kernel/trace/trace.h
+++ b/kernel/trace/trace.h
@@ -410,7 +410,6 @@ void tracing_sched_switch_assign_trace(struct trace_array *tr);
void tracing_stop_sched_switch_record(void);
void tracing_start_sched_switch_record(void);
int register_tracer(struct tracer *type);
-void unregister_tracer(struct tracer *type);
int is_tracing_stopped(void);
enum trace_file_type {
TRACE_FILE_LAT_FMT = 1,
--
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