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perf data ctf: Add value_set_string() helper 

There are many value_set_##x helper for integer, but only for integer.
This patch adds value_set_string() helper to help following commits
create string fields.

Signed-off-by: Wang Nan <wangnan0@huawei.com>
Acked-by: Jiri Olsa <jolsa@kernel.org>
Cc: Zefan Li <lizefan@huawei.com>
Cc: pi3orama@163.com
Link: http://lkml.kernel.org/r/1466767332-114472-2-git-send-email-wangnan0@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Wang Nan 2016-06-24 11:22:06 +00:00 committed by Arnaldo Carvalho de Melo
parent ed7b630b31
commit 069ee5c488
1 changed files with 30 additions and 0 deletions
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30
tools/perf/util/data-convert-bt.c
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@ -141,6 +141,36 @@ FUNC_VALUE_SET(s64)
FUNC_VALUE_SET(u64)
__FUNC_VALUE_SET(u64_hex, u64)
static int string_set_value(struct bt_ctf_field *field, const char *string);
static __maybe_unused int
value_set_string(struct ctf_writer *cw, struct bt_ctf_event *event,
const char *name, const char *string)
{
struct bt_ctf_field_type *type = cw->data.string;
struct bt_ctf_field *field;
int ret = 0;
field = bt_ctf_field_create(type);
if (!field) {
pr_err("failed to create a field %s\n", name);
return -1;
}
ret = string_set_value(field, string);
if (ret) {
pr_err("failed to set value %s\n", name);
goto err_put_field;
}
ret = bt_ctf_event_set_payload(event, name, field);
if (ret)
pr_err("failed to set payload %s\n", name);
err_put_field:
bt_ctf_field_put(field);
return ret;
}
static struct bt_ctf_field_type*
get_tracepoint_field_type(struct ctf_writer *cw, struct format_field *field)
{