diff options
Diffstat (limited to 'arch/s390/kernel/perf_cpum_sf.c')
| -rw-r--r-- | arch/s390/kernel/perf_cpum_sf.c | 9 |
1 files changed, 4 insertions, 5 deletions
diff --git a/arch/s390/kernel/perf_cpum_sf.c b/arch/s390/kernel/perf_cpum_sf.c index 1c0b58545c04..ca960d0370d5 100644 --- a/arch/s390/kernel/perf_cpum_sf.c +++ b/arch/s390/kernel/perf_cpum_sf.c @@ -823,7 +823,7 @@ static int cpumsf_pmu_event_init(struct perf_event *event) } /* Check online status of the CPU to which the event is pinned */ - if (event->cpu >= nr_cpumask_bits || + if ((unsigned int)event->cpu >= nr_cpumask_bits || (event->cpu >= 0 && !cpu_online(event->cpu))) return -ENODEV; @@ -1009,8 +1009,8 @@ static int perf_push_sample(struct perf_event *event, struct sf_raw_sample *sfr) * sample. Some early samples or samples from guests without * lpp usage would be misaccounted to the host. We use the asn * value as an addon heuristic to detect most of these guest samples. - * If the value differs from the host hpp value, we assume to be a - * KVM guest. + * If the value differs from 0xffff (the host value), we assume to + * be a KVM guest. */ switch (sfr->basic.CL) { case 1: /* logical partition */ @@ -1020,8 +1020,7 @@ static int perf_push_sample(struct perf_event *event, struct sf_raw_sample *sfr) sde_regs->in_guest = 1; break; default: /* old machine, use heuristics */ - if (sfr->basic.gpp || - sfr->basic.prim_asn != (u16)sfr->basic.hpp) + if (sfr->basic.gpp || sfr->basic.prim_asn != 0xffff) sde_regs->in_guest = 1; break; } |