OpenSDV
/
original_kernel
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

clocksource: Print clocksource name when clocksource is tested unstable 

Some "TSC fall back to HPET" messages appear on systems having more than
2 NUMA nodes:

clocksource: timekeeping watchdog on CPU168: hpet read-back delay of 4296200ns, attempt 4, marking unstable

The "hpet" here is misleading the clocksource watchdog is really
doing repeated reads of "hpet" in order to check for unrelated delays.
Therefore, print the name of the clocksource under test, prefixed by
"wd-" and suffixed by "-wd", for example, "wd-tsc-wd".

Signed-off-by: Yunying Sun <yunying.sun@intel.com>
Signed-off-by: Paul E. McKenney <paulmck@kernel.org>
This commit is contained in:
Yunying Sun 2022-11-16 16:22:21 +08:00 committed by Paul E. McKenney
parent 1b929c02af
commit beaa1ffe55
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
kernel/time/clocksource.c
View File

@ -257,8 +257,8 @@ static enum wd_read_status cs_watchdog_read(struct clocksource *cs, u64 *csnow,
goto skip_test;
}
pr_warn("timekeeping watchdog on CPU%d: %s read-back delay of %lldns, attempt %d, marking unstable\n",
smp_processor_id(), watchdog->name, wd_delay, nretries);
pr_warn("timekeeping watchdog on CPU%d: wd-%s-wd read-back delay of %lldns, attempt %d, marking unstable\n",
smp_processor_id(), cs->name, wd_delay, nretries);
return WD_READ_UNSTABLE;
skip_test: