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| author |   Hendrik Brueckner <brueckner@linux.ibm.com> | 2018-08-08 10:30:37 +0200 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2019-02-22 09:19:50 +0100 |
| commit | 26b8317f51a20c1e4f61fbd2cc68975faad10b02 (patch) | |
| tree | e59b0ea3f327d7ea6f6a460fe0837000273c7561 /arch/s390/include/asm | |
| parent | s390/cpu_mf: move struct cpu_cf_events and per-CPU variable to header file (diff) | |
| download | linux-dev-26b8317f51a20c1e4f61fbd2cc68975faad10b02.tar.xz linux-dev-26b8317f51a20c1e4f61fbd2cc68975faad10b02.zip | |
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 <brueckner@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include/asm')
| -rw-r--r-- | arch/s390/include/asm/cpu_mcf.h | 2 |
1 files changed, 2 insertions, 0 deletions
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 */ |