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libcpumf: Relocate ctr_in_list() for shared use

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Move ctr_in_list() from cpumf/lspai.c to a shared location to enable
reuse in other binaries that require counter list filtering.

Reviewed-by:  Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Jan Polensky <japo@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Jan Polensky
2025-09-29 12:58:52 +02:00
committed by Jan Höppner
parent 20a4ebd83c
commit 3a0c394fa2
3 changed files with 40 additions and 26 deletions
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cpumf/lspai.c
+2 -26
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@@ -233,31 +233,6 @@ static int pai_ctrcmp(const void *p1, const void *p2)
return l->nr > r->nr ? 1 : -1;
}
/* Return true if the counter is in the ctrlist. An empty ctrlist
* disables all counters.
*/
static bool ctr_in_list(char *name)
{
char *token;
char *list;
if (!ctrlist) /* No --counters means all counters */
return true;
list = util_strdup(ctrlist);
token = strtok(list, ",");
while (token) {
if (strcmp(token, name) == 0) {
free(list);
return true;
}
token = strtok(NULL, ",");
}
free(list);
return false;
}
/* Read counter names and assigned event number from sysfs file tree.
* Exit when sysfs directory can not be scanned.
*/
@@ -280,7 +255,8 @@ static void read_counternames(struct pai_node *node)
if (util_file_read_va(ctrpath, "event=%x", &ctr) == 1) {
snprintf(sname, sizeof(sname), "%c%ld",
pai_type_char(node->type), ctr - node->base);
if (!ctr_in_list(sname) && !ctr_in_list(namelist[i]->d_name)) {
if (!ctr_in_list(sname, ctrlist) &&
!ctr_in_list(namelist[i]->d_name, ctrlist)) {
/* Counter not listed in --counters option */
continue;
}