diff options
| author | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-12-21 03:14:03 +0100 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2015-12-21 03:14:03 +0100 |
| commit | e219aafe50fd546b8686582ddbafd24c3c2eda04 (patch) | |
| tree | a665e08ca8d42f20ac8e5dcc8565d666cffb26bd /kernel/trace/trace_printk.c | |
| parent | ffe12855a5f7f195589130197558e6a5c276caa4 (diff) | |
| parent | 24c96dc79c5e76d3cff7a33f955a4d3244644766 (diff) | |
Merge back earlier 'pm-domains' material for v4.5.
Diffstat (limited to 'kernel/trace/trace_printk.c')
| -rw-r--r-- | kernel/trace/trace_printk.c | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/kernel/trace/trace_printk.c b/kernel/trace/trace_printk.c index 36c1455b7567..1c2b28536feb 100644 --- a/kernel/trace/trace_printk.c +++ b/kernel/trace/trace_printk.c @@ -178,6 +178,12 @@ static inline void format_mod_start(void) { } static inline void format_mod_stop(void) { } #endif /* CONFIG_MODULES */ +static bool __read_mostly trace_printk_enabled = true; + +void trace_printk_control(bool enabled) +{ + trace_printk_enabled = enabled; +} __initdata_or_module static struct notifier_block module_trace_bprintk_format_nb = { @@ -192,7 +198,7 @@ int __trace_bprintk(unsigned long ip, const char *fmt, ...) if (unlikely(!fmt)) return 0; - if (!(trace_flags & TRACE_ITER_PRINTK)) + if (!trace_printk_enabled) return 0; va_start(ap, fmt); @@ -207,7 +213,7 @@ int __ftrace_vbprintk(unsigned long ip, const char *fmt, va_list ap) if (unlikely(!fmt)) return 0; - if (!(trace_flags & TRACE_ITER_PRINTK)) + if (!trace_printk_enabled) return 0; return trace_vbprintk(ip, fmt, ap); @@ -219,7 +225,7 @@ int __trace_printk(unsigned long ip, const char *fmt, ...) int ret; va_list ap; - if (!(trace_flags & TRACE_ITER_PRINTK)) + if (!trace_printk_enabled) return 0; va_start(ap, fmt); @@ -231,7 +237,7 @@ EXPORT_SYMBOL_GPL(__trace_printk); int __ftrace_vprintk(unsigned long ip, const char *fmt, va_list ap) { - if (!(trace_flags & TRACE_ITER_PRINTK)) + if (!trace_printk_enabled) return 0; return trace_vprintk(ip, fmt, ap); |