From 26b8317f51a20c1e4f61fbd2cc68975faad10b02 Mon Sep 17 00:00:00 2001 From: Hendrik Brueckner Date: Wed, 8 Aug 2018 10:30:37 +0200 Subject: s390/cpum_cf: introduce kernel_cpumcf_alert() to obtain measurement alerts During a __kernel_cpumcf_begin()/end() session, save measurement alerts for the counter facility in the per-CPU cpu_cf_events variable. Users can obtain and, optionally, clear the alerts by calling kernel_cpumcf_alert() to specifically handle alerts. Signed-off-by: Hendrik Brueckner Signed-off-by: Martin Schwidefsky --- arch/s390/include/asm/cpu_mcf.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'arch/s390/include') diff --git a/arch/s390/include/asm/cpu_mcf.h b/arch/s390/include/asm/cpu_mcf.h index 82e0b80f2c81..2cd4f09ee268 100644 --- a/arch/s390/include/asm/cpu_mcf.h +++ b/arch/s390/include/asm/cpu_mcf.h @@ -52,6 +52,7 @@ static inline void ctr_set_stop(u64 *state, int ctr_set) struct cpu_cf_events { struct cpumf_ctr_info info; atomic_t ctr_set[CPUMF_CTR_SET_MAX]; + atomic64_t alert; u64 state, tx_state; unsigned int flags; unsigned int txn_flags; @@ -59,6 +60,7 @@ struct cpu_cf_events { DECLARE_PER_CPU(struct cpu_cf_events, cpu_cf_events); int __kernel_cpumcf_begin(void); +unsigned long kernel_cpumcf_alert(int clear); void __kernel_cpumcf_end(void); #endif /* _ASM_S390_CPU_MCF_H */ -- cgit v1.2.3-59-g8ed1b