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cpumf/lshwc: Add flag to hide undefined counters of each counter set

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Add command line option -H to hide counter value numbers from counters
which are not defined in a counter set. They are usually all zero and
are of no interest.

Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Thomas Richter
2024-11-27 14:36:14 +01:00
committed by Jan Höppner
parent 718907d9ba
commit 283ae4dd2f
1 changed files with 14 additions and 0 deletions
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14
cpumf/lshwc.c
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@@ -56,6 +56,7 @@ static unsigned char *ioctlbuffer;
static bool allcpu;
static char *ctrformat = "%ld";
static bool shortname;
static bool hideundef;
static unsigned int max_possible_cpus; /* No of possible CPUs */
static struct ctrname { /* List of defined counters */
@@ -343,6 +344,8 @@ static void show_header(void)
for (size_t i = 0; i < ARRAY_SIZE(ctrname); ++i) {
if (!ctrname[i].hitcnt)
continue;
if (hideundef && !ctrname[i].name)
continue;
if (comma)
putchar(',');
if (shortname) {
@@ -376,6 +379,8 @@ static void line(char *header)
for (size_t i = 0; i < ARRAY_SIZE(ctrname); ++i) {
if (!ctrname[i].hitcnt)
continue;
if (hideundef && !ctrname[i].name)
continue;
if (comma)
putchar(',');
printf(ctrformat, ctrname[i].ccv[h]);
@@ -391,6 +396,8 @@ static void line(char *header)
for (size_t i = 0; i < ARRAY_SIZE(ctrname); ++i) {
if (!ctrname[i].hitcnt)
continue;
if (hideundef && !ctrname[i].name)
continue;
if (comma)
putchar(',');
printf(ctrformat, ctrname[i].total);
@@ -658,6 +665,10 @@ static struct util_opt opt_vec[] = {
.option = { "hex", no_argument, NULL, 'x' },
.desc = "Counter values in hexadecimal format"
},
{
.option = { "hide", no_argument, NULL, 'H' },
.desc = "Do not display undefined counters of a counter set"
},
UTIL_OPT_HELP,
UTIL_OPT_VERSION,
UTIL_OPT_END
@@ -718,6 +729,9 @@ int main(int argc, char **argv)
if (errno || *slash)
errx(EXIT_FAILURE, "Invalid argument for -%c", ch);
break;
case 'H':
hideundef = true;
break;
case 's':
shortname = true;
break;