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cpumf/lshwc: Show explicitly selected unnamed counters with --hide

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When an unnamed counter is explicitly selected by numeric ID via
--counters (for example, --counters=218), show it even when --hide is
enabled.

Keep --hide effective for unnamed counters that were not explicitly
selected. To do that, evaluate the counter filter once per counter and
reuse the result to distinguish between a generic match and an explicit
numeric-ID match.

Suggested-by: Christian Borntraeger <borntraeger@linux.ibm.com>
Reviewed-by: Jan Höppner <hoeppner@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
2026-06-19 16:23:34 +02:00
committed by Jan Höppner
parent 2bb61f96c0
commit 6e7eb62ea1
1 changed files with 44 additions and 2 deletions
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46
cpumf/lshwc.c
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@@ -406,6 +406,38 @@ static void output_times(struct time_formats date)
}
}
struct ctr_filter_match {
bool selected;
bool selected_by_id;
};
static struct ctr_filter_match ctr_match(const char *name, const char *list,
size_t id)
{
struct ctr_filter_match match = { .selected = !list };
char *copy, *token;
char id_str[32];
if (!list)
return match;
snprintf(id_str, sizeof(id_str), "%zu", id);
copy = util_strdup(list);
for (token = strtok(copy, ","); token; token = strtok(NULL, ",")) {
if (name && strcmp(token, name) == 0) {
match.selected = true;
break;
}
if (strcmp(token, id_str) == 0) {
match.selected = true;
match.selected_by_id = true;
break;
}
}
free(copy);
return match;
}
static void prepare_counter(size_t id, unsigned long value)
{
if (output_format == FMT_CSV) {
@@ -438,9 +470,14 @@ static void output_per_cpu(struct time_formats date)
util_fmt_obj_start(FMT_LIST, "counters");
}
for (size_t i = 0; i < ARRAY_SIZE(ctrname); ++i) {
struct ctr_filter_match match;
if (!ctrname[i].hitcnt)
continue;
if (hideundef && !ctrname[i].name)
match = ctr_match(ctrname[i].name, ctrlist, i);
if (!match.selected)
continue;
if (hideundef && !ctrname[i].name && !match.selected_by_id)
continue;
prepare_counter(i, ctrname[i].ccv[h]);
}
@@ -462,9 +499,14 @@ static void output_total(struct time_formats date)
util_fmt_obj_start(FMT_LIST, "counters");
}
for (size_t i = 0; i < ARRAY_SIZE(ctrname); ++i) {
struct ctr_filter_match match;
if (!ctrname[i].hitcnt)
continue;
if (hideundef && !ctrname[i].name)
match = ctr_match(ctrname[i].name, ctrlist, i);
if (!match.selected)
continue;
if (hideundef && !ctrname[i].name && !match.selected_by_id)
continue;
prepare_counter(i, ctrname[i].total);
ctrname[i].total = 0;