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tracing: Pass the trace_array into ftrace_probe_ops functions

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Pass the trace_array associated to a ftrace_probe_ops into the probe_ops
func(), init() and free() functions. The trace_array is the descriptor that
describes a tracing instance. This will help create the infrastructure that
will allow having function probes unique to tracing instances.

Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt (VMware)
2017-04-10 22:30:05 -04:00
parent 04ec7bb642
commit b5f081b563
5 changed files with 51 additions and 30 deletions
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14
kernel/trace/trace.c
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@@ -6736,14 +6736,16 @@ static const struct file_operations tracing_dyn_info_fops = {
#if defined(CONFIG_TRACER_SNAPSHOT) && defined(CONFIG_DYNAMIC_FTRACE)
static void
ftrace_snapshot(unsigned long ip, unsigned long parent_ip,
struct ftrace_probe_ops *ops, void **data)
struct trace_array *tr, struct ftrace_probe_ops *ops,
void **data)
{
tracing_snapshot();
}
static void
ftrace_count_snapshot(unsigned long ip, unsigned long parent_ip,
struct ftrace_probe_ops *ops, void **data)
struct trace_array *tr, struct ftrace_probe_ops *ops,
void **data)
{
struct ftrace_func_mapper *mapper = ops->private_data;
long *count = NULL;
@@ -6785,8 +6787,8 @@ ftrace_snapshot_print(struct seq_file *m, unsigned long ip,
}
static int
ftrace_snapshot_init(struct ftrace_probe_ops *ops, unsigned long ip,
void *data)
ftrace_snapshot_init(struct ftrace_probe_ops *ops, struct trace_array *tr,
unsigned long ip, void *data)
{
struct ftrace_func_mapper *mapper = ops->private_data;
@@ -6794,8 +6796,8 @@ ftrace_snapshot_init(struct ftrace_probe_ops *ops, unsigned long ip,
}
static void
ftrace_snapshot_free(struct ftrace_probe_ops *ops, unsigned long ip,
void **_data)
ftrace_snapshot_free(struct ftrace_probe_ops *ops, struct trace_array *tr,
unsigned long ip, void **data)
{
struct ftrace_func_mapper *mapper = ops->private_data;