[Crash-utility] [PATCH 08/12] crash-trace-command: add ftrace_common_fields

The newer kernel moves the common fields of event calls to a "ftrace_common_fields", so we have to do so in crash. A new function ftrace_init_common_fields() is added, it uses the newly ftrace_init_event_fields() to init to common fields. Signed-off-by: Lai Jiangshan <laijs(a)cn.fujitsu.com&gt; --- diff --git a/extensions/trace.c b/extensions/trace.c index 34f1be2..f5d67d3 100755 --- a/extensions/trace.c +++ b/extensions/trace.c @@ -652,6 +652,9 @@ static struct event_type *event_type_cache[MAX_CACHE_ID]; static struct event_type **event_types; static int nr_event_types; +static struct ftrace_field *ftrace_common_fields; +static int ftrace_common_fields_count; + /* * TODO: implement event_generic_print_fmt_print() when the print fmt * in tracing/events/$SYSTEM/$TRACE/format becomes a will-defined @@ -885,6 +888,21 @@ static int ftrace_init_event_type(ulong call, struct event_type *aevent_type) &aevent_type->fields); } +static int ftrace_init_common_fields(void) +{ + ulong ftrace_common_fields_head; + struct syment *sp; + + sp = symbol_search("ftrace_common_fields"); + if (!sp) + return 0; + + ftrace_common_fields_head = sp->value; + + return ftrace_init_event_fields(ftrace_common_fields_head, + &ftrace_common_fields_count, &ftrace_common_fields); +} + static void ftrace_destroy_event_types(void) { int i, j; @@ -903,6 +921,7 @@ static void ftrace_destroy_event_types(void) } free(event_types); + free(ftrace_common_fields); } static @@ -1103,6 +1122,9 @@ static int ftrace_init_event_types(void) read_value(event, event, list_head, next); } + if (ftrace_init_common_fields() < 0) + goto out_fail; + return 0; out_fail_free_aevent_type: