On Mon, 2010-11-29 at 18:20 +0200, Avi Kivity wrote:
> Instead of spamming the output with complaints about missing fields, simply
> return an error to the caller, which can print something out or do something
> more intelligent about them.
>
> Fixes kvm plugin tracing older kernels.
Hmm, what about just passing in err=0?
-- Steve
>
> Signed-off-by: Avi Kivity <avi@xxxxxxxxxx>
> ---
> parse-events.c | 15 +++------------
> 1 files changed, 3 insertions(+), 12 deletions(-)
>
> diff --git a/parse-events.c b/parse-events.c
> index f0b0324..7a4c3a6 100644
> --- a/parse-events.c
> +++ b/parse-events.c
> @@ -4446,17 +4446,11 @@ int get_field_val(struct trace_seq *s, struct format_field *field,
> const char *name, struct record *record,
> unsigned long long *val, int err)
> {
> - if (!field) {
> - if (err)
> - trace_seq_printf(s, "<CANT FIND FIELD %s>", name);
> + if (!field)
> return -1;
> - }
>
> - if (pevent_read_number_field(field, record->data, val)) {
> - if (err)
> - trace_seq_printf(s, " %s=INVALID", name);
> + if (pevent_read_number_field(field, record->data, val))
> return -1;
> - }
>
> return 0;
> }
> @@ -4489,11 +4483,8 @@ void *pevent_get_field_raw(struct trace_seq *s, struct event_format *event,
>
> field = pevent_find_field(event, name);
>
> - if (!field) {
> - if (err)
> - trace_seq_printf(s, "<CANT FIND FIELD %s>", name);
> + if (!field)
> return NULL;
> - }
>
> /* Allow @len to be NULL */
> if (!len)
--
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