i,
While pahole allows you to exclude classes with a specified prefix (using
--exclude), it doesn't appear to be able to do the opposite - only show
classes with a specific prefix. I found I needed this for my own use of it,
so here is a patch to add this functionality. It seems like it could be
useful for others:
Thanks
Dave Rigby
diff --git a/pahole.c b/pahole.c
index 7053471..e16ac2d 100644
--- a/pahole.c
+++ b/pahole.c
@@ -26,6 +26,9 @@ static uint8_t word_size, original_word_size;
static char *class__exclude_prefix;
static size_t class__exclude_prefix_len;
+static char *class__include_prefix;
+static size_t class__include_prefix_len;
+
static char *cu__exclude_prefix;
static size_t cu__exclude_prefix_len;
@@ -350,6 +353,20 @@ static struct tag *tag__filter(struct tag *tag,
struct cu *cu,
return NULL;
}
+ if (class__include_prefix != NULL) {
+ if (name == NULL) {
+ const struct tag *tdef =
+ cu__find_first_typedef_of_type(cu, tag->id);
+ if (tdef != NULL)
+ name = class__name(tag__class(tdef), cu);
+ }
+
+ if (name != NULL && strncmp(class__include_prefix, name,
+ class__include_prefix_len) != 0)
+ return NULL;
+ }
+
+
if (decl_exclude_prefix != NULL &&
(tag->decl_file == NULL ||
strncmp(decl_exclude_prefix, tag->decl_file,
@@ -820,6 +837,12 @@ static const struct argp_option pahole__options[] = {
.doc = "exclude PREFIXed classes",
},
{
+ .name = "prefix_filter",
+ .key = 'y',
+ .arg = "PREFIX",
+ .doc = "include PREFIXed classes",
+ },
+ {
.name = "cu_exclude",
.key = 'X',
.arg = "PREFIX",
@@ -910,6 +933,9 @@ static error_t pahole__options_parser(int key, char *arg,
case 'x': class__exclude_prefix = arg;
class__exclude_prefix_len = strlen(class__exclude_prefix);
break;
+ case 'y': class__include_prefix = arg;
+ class__include_prefix_len = strlen(class__include_prefix);
+ break;
case 'z':
hole_size_ge = atoi(arg);
if (!global_verbose)
--
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