diff options
Diffstat (limited to 'include/trace/perf.h')
| -rw-r--r-- | include/trace/perf.h | 61 |
1 files changed, 42 insertions, 19 deletions
diff --git a/include/trace/perf.h b/include/trace/perf.h index dbc6c74defc3..a1754b73a8f5 100644 --- a/include/trace/perf.h +++ b/include/trace/perf.h @@ -4,22 +4,7 @@ #ifdef CONFIG_PERF_EVENTS -#undef __entry -#define __entry entry - -#undef __get_dynamic_array -#define __get_dynamic_array(field) \ - ((void *)__entry + (__entry->__data_loc_##field & 0xffff)) - -#undef __get_dynamic_array_len -#define __get_dynamic_array_len(field) \ - ((__entry->__data_loc_##field >> 16) & 0xffff) - -#undef __get_str -#define __get_str(field) ((char *)__get_dynamic_array(field)) - -#undef __get_bitmask -#define __get_bitmask(field) (char *)__get_dynamic_array(field) +#include "stages/stage6_event_callback.h" #undef __perf_count #define __perf_count(c) (__count = (c)) @@ -27,10 +12,10 @@ #undef __perf_task #define __perf_task(t) (__task = (t)) -#undef DECLARE_EVENT_CLASS -#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ +#undef __DECLARE_EVENT_CLASS +#define __DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ static notrace void \ -perf_trace_##call(void *__data, proto) \ +do_perf_trace_##call(void *__data, proto) \ { \ struct trace_event_call *event_call = __data; \ struct trace_event_data_offsets_##call __maybe_unused __data_offsets;\ @@ -71,6 +56,41 @@ perf_trace_##call(void *__data, proto) \ } /* + * Define unused __count and __task variables to use @args to pass + * arguments to do_perf_trace_##call. This is needed because the + * macros __perf_count and __perf_task introduce the side-effect to + * store copies into those local variables. + */ +#undef DECLARE_EVENT_CLASS +#define DECLARE_EVENT_CLASS(call, proto, args, tstruct, assign, print) \ +__DECLARE_EVENT_CLASS(call, PARAMS(proto), PARAMS(args), PARAMS(tstruct), \ + PARAMS(assign), PARAMS(print)) \ +static notrace void \ +perf_trace_##call(void *__data, proto) \ +{ \ + u64 __count __attribute__((unused)); \ + struct task_struct *__task __attribute__((unused)); \ + \ + do_perf_trace_##call(__data, args); \ +} + +#undef DECLARE_EVENT_SYSCALL_CLASS +#define DECLARE_EVENT_SYSCALL_CLASS(call, proto, args, tstruct, assign, print) \ +__DECLARE_EVENT_CLASS(call, PARAMS(proto), PARAMS(args), PARAMS(tstruct), \ + PARAMS(assign), PARAMS(print)) \ +static notrace void \ +perf_trace_##call(void *__data, proto) \ +{ \ + u64 __count __attribute__((unused)); \ + struct task_struct *__task __attribute__((unused)); \ + \ + might_fault(); \ + preempt_disable_notrace(); \ + do_perf_trace_##call(__data, args); \ + preempt_enable_notrace(); \ +} + +/* * This part is compiled out, it is only here as a build time check * to make sure that if the tracepoint handling changes, the * perf probe will fail to compile unless it too is updated. @@ -88,4 +108,7 @@ static inline void perf_test_probe_##call(void) \ DEFINE_EVENT(template, name, PARAMS(proto), PARAMS(args)) #include TRACE_INCLUDE(TRACE_INCLUDE_FILE) + +#undef __DECLARE_EVENT_CLASS + #endif /* CONFIG_PERF_EVENTS */ |