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ftrace: Pass probe ops to probe function

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In preparation to cleaning up the probe function registration code, the
"data" parameter will eventually be removed from the probe->func() call.
Instead it will receive its own "ops" function, in which it can set up its
own data that it needs to map.

Signed-off-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
This commit is contained in:
Steven Rostedt (VMware) 2017-04-03 18:18:47 -04:00
parent e51a989679
commit bca6c8d048
5 changed files with 27 additions and 14 deletions
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24
kernel/trace/trace_functions.c
View file

@ -326,19 +326,22 @@ static void update_traceon_count(void **data, bool on)
}
static void
ftrace_traceon_count(unsigned long ip, unsigned long parent_ip, void **data)
ftrace_traceon_count(unsigned long ip, unsigned long parent_ip,
struct ftrace_probe_ops *ops, void **data)
{
update_traceon_count(data, 1);
}
static void
ftrace_traceoff_count(unsigned long ip, unsigned long parent_ip, void **data)
ftrace_traceoff_count(unsigned long ip, unsigned long parent_ip,
struct ftrace_probe_ops *ops, void **data)
{
update_traceon_count(data, 0);
}
static void
ftrace_traceon(unsigned long ip, unsigned long parent_ip, void **data)
ftrace_traceon(unsigned long ip, unsigned long parent_ip,
struct ftrace_probe_ops *ops, void **data)
{
if (tracing_is_on())
return;
@ -347,7 +350,8 @@ ftrace_traceon(unsigned long ip, unsigned long parent_ip, void **data)
}
static void
ftrace_traceoff(unsigned long ip, unsigned long parent_ip, void **data)
ftrace_traceoff(unsigned long ip, unsigned long parent_ip,
struct ftrace_probe_ops *ops, void **data)
{
if (!tracing_is_on())
return;
@ -365,13 +369,15 @@ ftrace_traceoff(unsigned long ip, unsigned long parent_ip, void **data)
#define STACK_SKIP 4
static void
ftrace_stacktrace(unsigned long ip, unsigned long parent_ip, void **data)
ftrace_stacktrace(unsigned long ip, unsigned long parent_ip,
struct ftrace_probe_ops *ops, void **data)
{
trace_dump_stack(STACK_SKIP);
}
static void
ftrace_stacktrace_count(unsigned long ip, unsigned long parent_ip, void **data)
ftrace_stacktrace_count(unsigned long ip, unsigned long parent_ip,
struct ftrace_probe_ops *ops, void **data)
{
long *count = (long *)data;
long old_count;
@ -419,7 +425,8 @@ static int update_count(void **data)
}
static void
ftrace_dump_probe(unsigned long ip, unsigned long parent_ip, void **data)
ftrace_dump_probe(unsigned long ip, unsigned long parent_ip,
struct ftrace_probe_ops *ops, void **data)
{
if (update_count(data))
ftrace_dump(DUMP_ALL);
@ -427,7 +434,8 @@ ftrace_dump_probe(unsigned long ip, unsigned long parent_ip, void **data)
/* Only dump the current CPU buffer. */
static void
ftrace_cpudump_probe(unsigned long ip, unsigned long parent_ip, void **data)
ftrace_cpudump_probe(unsigned long ip, unsigned long parent_ip,
struct ftrace_probe_ops *ops, void **data)
{
if (update_count(data))
ftrace_dump(DUMP_ORIG);