diff options
Diffstat (limited to 'include/trace/ftrace.h')
| -rw-r--r-- | include/trace/ftrace.h | 33 |
1 files changed, 19 insertions, 14 deletions
diff --git a/include/trace/ftrace.h b/include/trace/ftrace.h index ea6f9d4a20e9..75dd7787fb37 100644 --- a/include/trace/ftrace.h +++ b/include/trace/ftrace.h @@ -154,9 +154,11 @@ * * field = (typeof(field))entry; * - * p = get_cpu_var(ftrace_event_seq); + * p = &get_cpu_var(ftrace_event_seq); * trace_seq_init(p); - * ret = trace_seq_printf(s, <TP_printk> "\n"); + * ret = trace_seq_printf(s, "%s: ", <call>); + * if (ret) + * ret = trace_seq_printf(s, <TP_printk> "\n"); * put_cpu(); * if (!ret) * return TRACE_TYPE_PARTIAL_LINE; @@ -450,38 +452,38 @@ perf_trace_disable_##name(struct ftrace_event_call *unused) \ * * static void ftrace_raw_event_<call>(proto) * { + * struct ftrace_data_offsets_<call> __maybe_unused __data_offsets; * struct ring_buffer_event *event; * struct ftrace_raw_<call> *entry; <-- defined in stage 1 * struct ring_buffer *buffer; * unsigned long irq_flags; + * int __data_size; * int pc; * * local_save_flags(irq_flags); * pc = preempt_count(); * + * __data_size = ftrace_get_offsets_<call>(&__data_offsets, args); + * * event = trace_current_buffer_lock_reserve(&buffer, * event_<call>.id, - * sizeof(struct ftrace_raw_<call>), + * sizeof(*entry) + __data_size, * irq_flags, pc); * if (!event) * return; * entry = ring_buffer_event_data(event); * - * <assign>; <-- Here we assign the entries by the __field and - * __array macros. + * { <assign>; } <-- Here we assign the entries by the __field and + * __array macros. * - * trace_current_buffer_unlock_commit(buffer, event, irq_flags, pc); + * if (!filter_current_check_discard(buffer, event_call, entry, event)) + * trace_current_buffer_unlock_commit(buffer, + * event, irq_flags, pc); * } * * static int ftrace_raw_reg_event_<call>(struct ftrace_event_call *unused) * { - * int ret; - * - * ret = register_trace_<call>(ftrace_raw_event_<call>); - * if (!ret) - * pr_info("event trace: Could not activate trace point " - * "probe to <call>"); - * return ret; + * return register_trace_<call>(ftrace_raw_event_<call>); * } * * static void ftrace_unreg_event_<call>(struct ftrace_event_call *unused) @@ -493,6 +495,8 @@ perf_trace_disable_##name(struct ftrace_event_call *unused) \ * .trace = ftrace_raw_output_<call>, <-- stage 2 * }; * + * static const char print_fmt_<call>[] = <TP_printk>; + * * static struct ftrace_event_call __used * __attribute__((__aligned__(4))) * __attribute__((section("_ftrace_events"))) event_<call> = { @@ -501,6 +505,8 @@ perf_trace_disable_##name(struct ftrace_event_call *unused) \ * .raw_init = trace_event_raw_init, * .regfunc = ftrace_reg_event_<call>, * .unregfunc = ftrace_unreg_event_<call>, + * .print_fmt = print_fmt_<call>, + * .define_fields = ftrace_define_fields_<call>, * } * */ @@ -569,7 +575,6 @@ ftrace_raw_event_id_##call(struct ftrace_event_call *event_call, \ return; \ entry = ring_buffer_event_data(event); \ \ - \ tstruct \ \ { assign; } \ |