diff options
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/include/asm/cpu_mf.h | 6 | ||||
| -rw-r--r-- | arch/s390/kernel/perf_cpum_sf.c | 3 |
2 files changed, 9 insertions, 0 deletions
diff --git a/arch/s390/include/asm/cpu_mf.h b/arch/s390/include/asm/cpu_mf.h index 7364130a29c8..792cda339af1 100644 --- a/arch/s390/include/asm/cpu_mf.h +++ b/arch/s390/include/asm/cpu_mf.h @@ -144,6 +144,12 @@ struct hws_trailer_entry { unsigned long long progusage2; /* */ } __packed; +/* Load program parameter */ +static inline void lpp(void *pp) +{ + asm volatile(".insn s,0xb2800000,0(%0)\n":: "a" (pp) : "memory"); +} + /* Query counter information */ static inline int qctri(struct cpumf_ctr_info *info) { diff --git a/arch/s390/kernel/perf_cpum_sf.c b/arch/s390/kernel/perf_cpum_sf.c index 7e9b9e6ee821..dbb62c05805d 100644 --- a/arch/s390/kernel/perf_cpum_sf.c +++ b/arch/s390/kernel/perf_cpum_sf.c @@ -848,6 +848,9 @@ static void cpumsf_pmu_enable(struct pmu *pmu) return; } + /* Load current program parameter */ + lpp(&S390_lowcore.lpp); + debug_sprintf_event(sfdbg, 6, "pmu_enable: es=%i cs=%i ed=%i cd=%i " "tear=%p dear=%p\n", cpuhw->lsctl.es, cpuhw->lsctl.cs, cpuhw->lsctl.ed, cpuhw->lsctl.cd, |