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authorJim Cromie <jim.cromie@gmail.com>2020-07-19 17:10:52 -0600
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>2020-07-24 17:00:09 +0200
commit8037072d8139da435f3fcf9369a1ccc388431a2a (patch)
tree63fff3609a63399b213838a912d1474f9d9268e1 /lib
parentf62fc08fdc51d18292eb13bd345dfb159f024746 (diff)
dyndbg: refactor parse_linerange out of ddebug_parse_query
Make the code-block reusable to later handle "file foo.c:101-200" etc. This is a 99% code move, with reindent, function wrap&call, +pr_debug. no functional changes. Acked-by: <jbaron@akamai.com> Signed-off-by: Jim Cromie <jim.cromie@gmail.com> Link: https://lore.kernel.org/r/20200719231058.1586423-13-jim.cromie@gmail.com Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib')
-rw-r--r--lib/dynamic_debug.c63
1 files changed, 36 insertions, 27 deletions
diff --git a/lib/dynamic_debug.c b/lib/dynamic_debug.c
index 6d0159075308..7a66d5e07f41 100644
--- a/lib/dynamic_debug.c
+++ b/lib/dynamic_debug.c
@@ -291,6 +291,41 @@ static inline int parse_lineno(const char *str, unsigned int *val)
return 0;
}
+static int parse_linerange(struct ddebug_query *query, const char *first)
+{
+ char *last = strchr(first, '-');
+
+ if (query->first_lineno || query->last_lineno) {
+ pr_err("match-spec: line used 2x\n");
+ return -EINVAL;
+ }
+ if (last)
+ *last++ = '\0';
+ if (parse_lineno(first, &query->first_lineno) < 0)
+ return -EINVAL;
+ if (last) {
+ /* range <first>-<last> */
+ if (parse_lineno(last, &query->last_lineno) < 0)
+ return -EINVAL;
+
+ /* special case for last lineno not specified */
+ if (query->last_lineno == 0)
+ query->last_lineno = UINT_MAX;
+
+ if (query->last_lineno < query->first_lineno) {
+ pr_err("last-line:%d < 1st-line:%d\n",
+ query->last_lineno,
+ query->first_lineno);
+ return -EINVAL;
+ }
+ } else {
+ query->last_lineno = query->first_lineno;
+ }
+ vpr_info("parsed line %d-%d\n", query->first_lineno,
+ query->last_lineno);
+ return 0;
+}
+
static int check_set(const char **dest, char *src, char *name)
{
int rc = 0;
@@ -348,34 +383,8 @@ static int ddebug_parse_query(char *words[], int nwords,
UNESCAPE_SPECIAL);
rc = check_set(&query->format, words[i+1], "format");
} else if (!strcmp(words[i], "line")) {
- char *first = words[i+1];
- char *last = strchr(first, '-');
- if (query->first_lineno || query->last_lineno) {
- pr_err("match-spec: line used 2x\n");
- return -EINVAL;
- }
- if (last)
- *last++ = '\0';
- if (parse_lineno(first, &query->first_lineno) < 0)
+ if (parse_linerange(query, words[i+1]))
return -EINVAL;
- if (last) {
- /* range <first>-<last> */
- if (parse_lineno(last, &query->last_lineno) < 0)
- return -EINVAL;
-
- /* special case for last lineno not specified */
- if (query->last_lineno == 0)
- query->last_lineno = UINT_MAX;
-
- if (query->last_lineno < query->first_lineno) {
- pr_err("last-line:%d < 1st-line:%d\n",
- query->last_lineno,
- query->first_lineno);
- return -EINVAL;
- }
- } else {
- query->last_lineno = query->first_lineno;
- }
} else {
pr_err("unknown keyword \"%s\"\n", words[i]);
return -EINVAL;