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cpumf/lscpumf.c: Add support for counter number 265

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Set the counter name for z15 counter numbered 265. It is either named
DFLT_CCERROR or DFLT_CCFINISH, depending on the linux version. The
counter was renamed from CCERROR to CCFINISH in linux version 5.8.
Check for existence of file /sys/devices/cpum_cf/events/DLFT_CCERROR.
f this file exists the counter is named DFLT_CCERROR else
DFLT_CCFINISH (only for z15), other machines do not have this counter.

Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
This commit is contained in:
Thomas Richter
2020-07-21 14:29:58 +02:00
committed by Jan Höppner
parent 2215ba672e
commit 34cfca722c
1 changed files with 26 additions and 1 deletions
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27
cpumf/lscpumf.c
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@@ -2539,7 +2539,7 @@ static struct counters cpumcf_z15_counters[] = {
{
.ctrnum = 265,
.ctrset = CPUMF_CTRSET_EXTENDED,
.name = "DFLT_CCERROR",
.name = NULL,
.desc = "Increments by one for every DEFLATE CONVERSION CALL"
"\n\t\tinstruction executed that ended in Condition Codes"
"\n\t\t0, 1 or 2",
@@ -2830,6 +2830,30 @@ static int read_sfb(struct cpumf_info *p)
return rc;
}
/* Set the counter name for z15 counter numbered 265. It is either named
* DFLT_CCERROR or DFLT_CCFINISH, depending on the linux version. The
* counter was renamed from CCERROR to CCFINISH in linux version 5.8.
* Check for existence of file /sys/devices/cpum_cf/events/DLFT_CCERROR.
*/
#define CCERROR "/sys/devices/cpum_cf/events/DFLT_CCERROR"
static void read_ccerror(struct counters *cp, size_t cp_cnt)
{
struct stat sbuf;
char *ctrname;
size_t i = 0;
if (stat(CCERROR, &sbuf) == 0)
ctrname = "DFLT_CCERROR";
else
ctrname = "DFLT_CCFINISH";
/* Find DFLT_CC{FINISH,ERROR} in table and set name */
for (struct counters *p = cp; i < cp_cnt; ++i, ++p)
if (p->ctrnum == 265) {
p->name = ctrname;
break;
}
}
/* Read allnecessary information from /sysfs file /proc/service_levels */
static int read_info(void)
{
@@ -3017,6 +3041,7 @@ static struct counters *get_counter(int ctrset, size_t *len)
case 8562:
cp = cpumcf_z15_counters;
*len = ARRAY_SIZE(cpumcf_z15_counters);
read_ccerror(cp, *len);
break;
}
break;