diff options
Diffstat (limited to 'runtime/print.c')
| -rw-r--r-- | runtime/print.c | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/runtime/print.c b/runtime/print.c index c100bbfe..326d67d5 100644 --- a/runtime/print.c +++ b/runtime/print.c @@ -72,6 +72,21 @@ void _stp_print_cleanup (void) free_percpu(Stp_lbuf); } +#define __DEF_EXPORT_FN(fn, postfix) fn ## _ ## postfix +#define DEF_EXPORT_FN(fn, postfix) __DEF_EXPORT_FN(fn, postfix) + +#if defined(RELAY_GUEST) +#if defined(RELAY_HOST) + #error "Cannot specify both RELAY_HOST and RELAY_GUEST" +#endif +#define EXPORT_FN(fn) DEF_EXPORT_FN(fn, RELAY_GUEST) +#elif defined(RELAY_HOST) +#define EXPORT_FN(fn) DEF_EXPORT_FN(fn, RELAY_HOST) +#else /* defined(RELAY_GUEST) || defined(RELAY_HOST) */ +#define EXPORT_FN(fn) fn +#endif + +#if !defined(RELAY_GUEST) /* The relayfs API changed between 2.6.15 and 2.6.16. */ /* Use the appropriate print flush function. */ @@ -80,6 +95,26 @@ void _stp_print_cleanup (void) #else #include "print_new.c" #endif +#if defined(RELAY_HOST) +EXPORT_SYMBOL_GPL(EXPORT_FN(stp_print_flush)); +#endif + +#endif /*!RELAY_GUEST*/ + +#if defined(RELAY_GUEST) || defined(RELAY_HOST) +/* Prohibit irqs to avoid racing on a relayfs */ +extern void EXPORT_FN(stp_print_flush) (_stp_pbuf *); +static inline void _stp_print_flush(void) +{ + unsigned long flags; + local_irq_save(flags); + EXPORT_FN(stp_print_flush) (per_cpu_ptr(Stp_pbuf, smp_processor_id())); + local_irq_restore(flags); +} +#else +#define _stp_print_flush() \ + EXPORT_FN(stp_print_flush)(per_cpu_ptr(Stp_pbuf, smp_processor_id())) +#endif #ifndef STP_MAXBINARYARGS #define STP_MAXBINARYARGS 127 |