diff options
Diffstat (limited to 'kernel')
| -rw-r--r-- | kernel/trace/trace_functions.c | 38 |
1 files changed, 33 insertions, 5 deletions
diff --git a/kernel/trace/trace_functions.c b/kernel/trace/trace_functions.c index a88a3e0b0cc2..043b2425ae73 100644 --- a/kernel/trace/trace_functions.c +++ b/kernel/trace/trace_functions.c @@ -228,7 +228,7 @@ static int update_count(void **data) } static void -ftrace_traceon(unsigned long ip, unsigned long parent_ip, void **data) +ftrace_traceon_count(unsigned long ip, unsigned long parent_ip, void **data) { if (tracing_is_on()) return; @@ -238,7 +238,7 @@ 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_count(unsigned long ip, unsigned long parent_ip, void **data) { if (!tracing_is_on()) return; @@ -247,10 +247,38 @@ ftrace_traceoff(unsigned long ip, unsigned long parent_ip, void **data) tracing_off(); } +static void +ftrace_traceon(unsigned long ip, unsigned long parent_ip, void **data) +{ + if (tracing_is_on()) + return; + + tracing_on(); +} + +static void +ftrace_traceoff(unsigned long ip, unsigned long parent_ip, void **data) +{ + if (!tracing_is_on()) + return; + + tracing_off(); +} + static int ftrace_trace_onoff_print(struct seq_file *m, unsigned long ip, struct ftrace_probe_ops *ops, void *data); +static struct ftrace_probe_ops traceon_count_probe_ops = { + .func = ftrace_traceon_count, + .print = ftrace_trace_onoff_print, +}; + +static struct ftrace_probe_ops traceoff_count_probe_ops = { + .func = ftrace_traceoff_count, + .print = ftrace_trace_onoff_print, +}; + static struct ftrace_probe_ops traceon_probe_ops = { .func = ftrace_traceon, .print = ftrace_trace_onoff_print, @@ -269,7 +297,7 @@ ftrace_trace_onoff_print(struct seq_file *m, unsigned long ip, seq_printf(m, "%ps:", (void *)ip); - if (ops == &traceon_probe_ops) + if (ops == &traceon_probe_ops || ops == &traceon_count_probe_ops) seq_printf(m, "traceon"); else seq_printf(m, "traceoff"); @@ -297,9 +325,9 @@ ftrace_trace_onoff_callback(struct ftrace_hash *hash, /* we register both traceon and traceoff to this callback */ if (strcmp(cmd, "traceon") == 0) - ops = &traceon_probe_ops; + ops = param ? &traceon_count_probe_ops : &traceon_probe_ops; else - ops = &traceoff_probe_ops; + ops = param ? &traceoff_count_probe_ops : &traceoff_probe_ops; if (glob[0] == '!') { unregister_ftrace_function_probe_func(glob+1, ops); |
