tools lib traceevent: Add support for __print_array()
Since 6ea22486ba
("tracing: Add array printing helper") trace can
generate traces with variable element size arrays. Add support to
parse them.
Signed-off-by: Javi Merino <javi.merino@arm.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Acked-by: Steven Rostedt <rostedt@goodmis.org>
Cc: Jiri Olsa <jolsa@redhat.com>
Link: http://lkml.kernel.org/r/1427195239-15730-1-git-send-email-javi.merino@arm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Родитель
e1644aae45
Коммит
b839e1e846
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@ -766,6 +766,11 @@ static void free_arg(struct print_arg *arg)
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free_arg(arg->hex.field);
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free_arg(arg->hex.size);
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break;
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case PRINT_INT_ARRAY:
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free_arg(arg->int_array.field);
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free_arg(arg->int_array.count);
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free_arg(arg->int_array.el_size);
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break;
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case PRINT_TYPE:
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free(arg->typecast.type);
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free_arg(arg->typecast.item);
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@ -2544,6 +2549,32 @@ out:
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return EVENT_ERROR;
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}
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static enum event_type
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process_int_array(struct event_format *event, struct print_arg *arg, char **tok)
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{
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memset(arg, 0, sizeof(*arg));
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arg->type = PRINT_INT_ARRAY;
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if (alloc_and_process_delim(event, ",", &arg->int_array.field))
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goto out;
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if (alloc_and_process_delim(event, ",", &arg->int_array.count))
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goto free_field;
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if (alloc_and_process_delim(event, ")", &arg->int_array.el_size))
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goto free_size;
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return read_token_item(tok);
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free_size:
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free_arg(arg->int_array.count);
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free_field:
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free_arg(arg->int_array.field);
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out:
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*tok = NULL;
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return EVENT_ERROR;
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}
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static enum event_type
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process_dynamic_array(struct event_format *event, struct print_arg *arg, char **tok)
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{
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@ -2839,6 +2870,10 @@ process_function(struct event_format *event, struct print_arg *arg,
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free_token(token);
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return process_hex(event, arg, tok);
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}
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if (strcmp(token, "__print_array") == 0) {
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free_token(token);
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return process_int_array(event, arg, tok);
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}
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if (strcmp(token, "__get_str") == 0) {
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free_token(token);
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return process_str(event, arg, tok);
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@ -3367,6 +3402,7 @@ eval_num_arg(void *data, int size, struct event_format *event, struct print_arg
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break;
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case PRINT_FLAGS:
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case PRINT_SYMBOL:
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case PRINT_INT_ARRAY:
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case PRINT_HEX:
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break;
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case PRINT_TYPE:
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@ -3777,6 +3813,54 @@ static void print_str_arg(struct trace_seq *s, void *data, int size,
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}
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break;
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case PRINT_INT_ARRAY: {
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void *num;
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int el_size;
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if (arg->int_array.field->type == PRINT_DYNAMIC_ARRAY) {
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unsigned long offset;
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struct format_field *field =
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arg->int_array.field->dynarray.field;
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offset = pevent_read_number(pevent,
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data + field->offset,
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field->size);
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num = data + (offset & 0xffff);
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} else {
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field = arg->int_array.field->field.field;
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if (!field) {
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str = arg->int_array.field->field.name;
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field = pevent_find_any_field(event, str);
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if (!field)
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goto out_warning_field;
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arg->int_array.field->field.field = field;
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}
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num = data + field->offset;
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}
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len = eval_num_arg(data, size, event, arg->int_array.count);
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el_size = eval_num_arg(data, size, event,
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arg->int_array.el_size);
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for (i = 0; i < len; i++) {
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if (i)
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trace_seq_putc(s, ' ');
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if (el_size == 1) {
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trace_seq_printf(s, "%u", *(uint8_t *)num);
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} else if (el_size == 2) {
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trace_seq_printf(s, "%u", *(uint16_t *)num);
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} else if (el_size == 4) {
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trace_seq_printf(s, "%u", *(uint32_t *)num);
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} else if (el_size == 8) {
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trace_seq_printf(s, "%lu", *(uint64_t *)num);
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} else {
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trace_seq_printf(s, "BAD SIZE:%d 0x%x",
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el_size, *(uint8_t *)num);
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el_size = 1;
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}
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num += el_size;
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}
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break;
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}
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case PRINT_TYPE:
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break;
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case PRINT_STRING: {
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@ -5361,6 +5445,15 @@ static void print_args(struct print_arg *args)
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print_args(args->hex.size);
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printf(")");
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break;
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case PRINT_INT_ARRAY:
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printf("__print_array(");
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print_args(args->int_array.field);
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printf(", ");
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print_args(args->int_array.count);
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printf(", ");
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print_args(args->int_array.el_size);
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printf(")");
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break;
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case PRINT_STRING:
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case PRINT_BSTRING:
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printf("__get_str(%s)", args->string.string);
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@ -251,6 +251,12 @@ struct print_arg_hex {
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struct print_arg *size;
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};
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struct print_arg_int_array {
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struct print_arg *field;
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struct print_arg *count;
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struct print_arg *el_size;
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};
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struct print_arg_dynarray {
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struct format_field *field;
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struct print_arg *index;
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@ -279,6 +285,7 @@ enum print_arg_type {
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PRINT_FLAGS,
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PRINT_SYMBOL,
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PRINT_HEX,
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PRINT_INT_ARRAY,
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PRINT_TYPE,
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PRINT_STRING,
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PRINT_BSTRING,
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@ -298,6 +305,7 @@ struct print_arg {
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struct print_arg_flags flags;
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struct print_arg_symbol symbol;
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struct print_arg_hex hex;
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struct print_arg_int_array int_array;
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struct print_arg_func func;
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struct print_arg_string string;
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struct print_arg_bitmask bitmask;
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@ -214,6 +214,11 @@ static void define_event_symbols(struct event_format *event,
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define_event_symbols(event, ev_name, args->hex.field);
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define_event_symbols(event, ev_name, args->hex.size);
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break;
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case PRINT_INT_ARRAY:
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define_event_symbols(event, ev_name, args->int_array.field);
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define_event_symbols(event, ev_name, args->int_array.count);
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define_event_symbols(event, ev_name, args->int_array.el_size);
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break;
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case PRINT_BSTRING:
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case PRINT_DYNAMIC_ARRAY:
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case PRINT_STRING:
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@ -231,6 +231,11 @@ static void define_event_symbols(struct event_format *event,
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define_event_symbols(event, ev_name, args->hex.field);
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define_event_symbols(event, ev_name, args->hex.size);
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break;
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case PRINT_INT_ARRAY:
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define_event_symbols(event, ev_name, args->int_array.field);
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define_event_symbols(event, ev_name, args->int_array.count);
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define_event_symbols(event, ev_name, args->int_array.el_size);
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break;
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case PRINT_STRING:
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break;
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case PRINT_TYPE:
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