diff options
Diffstat (limited to 'kernel/trace/trace.c')
| -rw-r--r-- | kernel/trace/trace.c | 75 |
1 files changed, 34 insertions, 41 deletions
diff --git a/kernel/trace/trace.c b/kernel/trace/trace.c index bbdfaa2cbdb9..5822ff4e5a3e 100644 --- a/kernel/trace/trace.c +++ b/kernel/trace/trace.c @@ -1402,27 +1402,25 @@ static enum print_line_t print_lat_fmt(struct trace_iterator *iter) unsigned long sym_flags = (trace_flags & TRACE_ITER_SYM_MASK); struct trace_event *event; struct trace_entry *entry = iter->ent; - int ret; test_cpu_buff_start(iter); event = ftrace_find_event(entry->type); if (trace_flags & TRACE_ITER_CONTEXT_INFO) { - ret = trace_print_lat_context(iter); - if (ret) - return ret; + if (!trace_print_lat_context(iter)) + goto partial; } - if (event && event->latency_trace) { - ret = event->latency_trace(iter, sym_flags); - if (ret) - return ret; - return TRACE_TYPE_HANDLED; - } + if (event && event->latency_trace) + return event->latency_trace(iter, sym_flags); + + if (!trace_seq_printf(s, "Unknown type %d\n", entry->type)) + goto partial; - trace_seq_printf(s, "Unknown type %d\n", entry->type); return TRACE_TYPE_HANDLED; +partial: + return TRACE_TYPE_PARTIAL_LINE; } static enum print_line_t print_trace_fmt(struct trace_iterator *iter) @@ -1431,7 +1429,6 @@ static enum print_line_t print_trace_fmt(struct trace_iterator *iter) unsigned long sym_flags = (trace_flags & TRACE_ITER_SYM_MASK); struct trace_entry *entry; struct trace_event *event; - int ret; entry = iter->ent; @@ -1440,22 +1437,19 @@ static enum print_line_t print_trace_fmt(struct trace_iterator *iter) event = ftrace_find_event(entry->type); if (trace_flags & TRACE_ITER_CONTEXT_INFO) { - ret = trace_print_context(iter); - if (ret) - return ret; + if (!trace_print_context(iter)) + goto partial; } - if (event && event->trace) { - ret = event->trace(iter, sym_flags); - if (ret) - return ret; - return TRACE_TYPE_HANDLED; - } - ret = trace_seq_printf(s, "Unknown type %d\n", entry->type); - if (!ret) - return TRACE_TYPE_PARTIAL_LINE; + if (event && event->trace) + return event->trace(iter, sym_flags); + + if (!trace_seq_printf(s, "Unknown type %d\n", entry->type)) + goto partial; return TRACE_TYPE_HANDLED; +partial: + return TRACE_TYPE_PARTIAL_LINE; } static enum print_line_t print_raw_fmt(struct trace_iterator *iter) @@ -1463,29 +1457,25 @@ static enum print_line_t print_raw_fmt(struct trace_iterator *iter) struct trace_seq *s = &iter->seq; struct trace_entry *entry; struct trace_event *event; - int ret; entry = iter->ent; if (trace_flags & TRACE_ITER_CONTEXT_INFO) { - ret = trace_seq_printf(s, "%d %d %llu ", - entry->pid, iter->cpu, iter->ts); - if (!ret) - return TRACE_TYPE_PARTIAL_LINE; + if (!trace_seq_printf(s, "%d %d %llu ", + entry->pid, iter->cpu, iter->ts)) + goto partial; } event = ftrace_find_event(entry->type); - if (event && event->raw) { - ret = event->raw(iter, 0); - if (ret) - return ret; - return TRACE_TYPE_HANDLED; - } - ret = trace_seq_printf(s, "%d ?\n", entry->type); - if (!ret) - return TRACE_TYPE_PARTIAL_LINE; + if (event && event->raw) + return event->raw(iter, 0); + + if (!trace_seq_printf(s, "%d ?\n", entry->type)) + goto partial; return TRACE_TYPE_HANDLED; +partial: + return TRACE_TYPE_PARTIAL_LINE; } static enum print_line_t print_hex_fmt(struct trace_iterator *iter) @@ -1504,8 +1494,11 @@ static enum print_line_t print_hex_fmt(struct trace_iterator *iter) } event = ftrace_find_event(entry->type); - if (event && event->hex) - event->hex(iter, 0); + if (event && event->hex) { + int ret = event->hex(iter, 0); + if (ret != TRACE_TYPE_HANDLED) + return ret; + } SEQ_PUT_FIELD_RET(s, newline); @@ -1544,7 +1537,7 @@ static enum print_line_t print_bin_fmt(struct trace_iterator *iter) event = ftrace_find_event(entry->type); if (event && event->binary) - event->binary(iter, 0); + return event->binary(iter, 0); return TRACE_TYPE_HANDLED; } |