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| author |   Hendrik Brueckner <brueckner@linux.ibm.com> | 2018-08-06 17:43:07 +0200 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2019-02-22 09:19:47 +0100 |
| commit | 3d33345aa3d9ab2ee9b5a5bf2a8842c43603d537 (patch) | |
| tree | 72ec596cfd321286b9c714d488fc9b18123feb9a /arch/s390/include/asm/cpu_mcf.h | |
| parent | s390/cpum_cf: move counter set controls to a new header file (diff) | |
| download | linux-dev-3d33345aa3d9ab2ee9b5a5bf2a8842c43603d537.tar.xz linux-dev-3d33345aa3d9ab2ee9b5a5bf2a8842c43603d537.zip | |
s390/cpum_cf: prepare for in-kernel counter measurements
Prepare the counter facility support to be used by other in-kernel
users. The first step introduces the __kernel_cpumcf_begin() and
__kernel_cpumcf_end() functions to reserve the counter facility
for doing measurements and to release after the measurements are
done.
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/cpu_mcf.h')
| -rw-r--r-- | arch/s390/include/asm/cpu_mcf.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/s390/include/asm/cpu_mcf.h b/arch/s390/include/asm/cpu_mcf.h index b6e73fbf87d0..63fa74115cba 100644 --- a/arch/s390/include/asm/cpu_mcf.h +++ b/arch/s390/include/asm/cpu_mcf.h @@ -49,4 +49,7 @@ static inline void ctr_set_stop(u64 *state, int ctr_set) *state &= ~(cpumf_ctr_ctl[ctr_set] << CPUMF_LCCTL_ACTCTL_SHIFT); } +int __kernel_cpumcf_begin(void); +void __kernel_cpumcf_end(void); + #endif /* _ASM_S390_CPU_MCF_H */ |