diff options
| author | Thomas Richter <tmricht@linux.ibm.com> | 2023-02-24 10:55:21 +0300 |
|---|---|---|
| committer | Vasily Gorbik <gor@linux.ibm.com> | 2023-04-13 18:36:27 +0300 |
| commit | 3cdf0269cdc2c4728b71af4199823b6284379d42 (patch) | |
| tree | 716235ea7b54d5a64677b948d28cba891781f989 /arch/s390/kernel/perf_cpum_cf.c | |
| parent | 1707c1165283a9634717971f17692535c21ab0eb (diff) | |
| download | linux-3cdf0269cdc2c4728b71af4199823b6284379d42.tar.xz | |
s390/cpum_cf: log bad return code of function cfset_all_copy
When function cfset_all_copy() fails, also log the bad return code
in the debug statement (when turned on).
No functional change
Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Acked-by: Sumanth Korikkar <sumanthk@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390/kernel/perf_cpum_cf.c')
| -rw-r--r-- | arch/s390/kernel/perf_cpum_cf.c | 15 |
1 files changed, 9 insertions, 6 deletions
diff --git a/arch/s390/kernel/perf_cpum_cf.c b/arch/s390/kernel/perf_cpum_cf.c index c9ab971498d6..0b134c220948 100644 --- a/arch/s390/kernel/perf_cpum_cf.c +++ b/arch/s390/kernel/perf_cpum_cf.c @@ -1290,7 +1290,7 @@ static size_t cfset_needspace(unsigned int sets) static int cfset_all_copy(unsigned long arg, cpumask_t *mask) { struct s390_ctrset_read __user *ctrset_read; - unsigned int cpu, cpus, rc; + unsigned int cpu, cpus, rc = 0; void __user *uptr; ctrset_read = (struct s390_ctrset_read __user *)arg; @@ -1304,17 +1304,20 @@ static int cfset_all_copy(unsigned long arg, cpumask_t *mask) rc |= put_user(cpuhw->sets, &ctrset_cpudata->no_sets); rc |= copy_to_user(ctrset_cpudata->data, cpuhw->data, cpuhw->used); - if (rc) - return -EFAULT; + if (rc) { + rc = -EFAULT; + goto out; + } uptr += sizeof(struct s390_ctrset_cpudata) + cpuhw->used; cond_resched(); } cpus = cpumask_weight(mask); if (put_user(cpus, &ctrset_read->no_cpus)) - return -EFAULT; - debug_sprintf_event(cf_dbg, 4, "%s copied %ld\n", __func__, + rc = -EFAULT; +out: + debug_sprintf_event(cf_dbg, 4, "%s rc %d copied %ld\n", __func__, rc, uptr - (void __user *)ctrset_read->data); - return 0; + return rc; } static size_t cfset_cpuset_read(struct s390_ctrset_setdata *p, int ctrset, |