113 lines
3.0 KiB
C
113 lines
3.0 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
|
|
/*
|
|
* Counter facility support definitions for the Linux perf
|
|
*
|
|
* Copyright IBM Corp. 2019
|
|
* Author(s): Hendrik Brueckner <brueckner@linux.ibm.com>
|
|
*/
|
|
#ifndef _ASM_S390_CPU_MCF_H
|
|
#define _ASM_S390_CPU_MCF_H
|
|
|
|
#include <linux/perf_event.h>
|
|
#include <asm/cpu_mf.h>
|
|
|
|
enum cpumf_ctr_set {
|
|
CPUMF_CTR_SET_BASIC = 0, /* Basic Counter Set */
|
|
CPUMF_CTR_SET_USER = 1, /* Problem-State Counter Set */
|
|
CPUMF_CTR_SET_CRYPTO = 2, /* Crypto-Activity Counter Set */
|
|
CPUMF_CTR_SET_EXT = 3, /* Extended Counter Set */
|
|
CPUMF_CTR_SET_MT_DIAG = 4, /* MT-diagnostic Counter Set */
|
|
|
|
/* Maximum number of counter sets */
|
|
CPUMF_CTR_SET_MAX,
|
|
};
|
|
|
|
#define CPUMF_LCCTL_ENABLE_SHIFT 16
|
|
#define CPUMF_LCCTL_ACTCTL_SHIFT 0
|
|
|
|
static inline void ctr_set_enable(u64 *state, u64 ctrsets)
|
|
{
|
|
*state |= ctrsets << CPUMF_LCCTL_ENABLE_SHIFT;
|
|
}
|
|
|
|
static inline void ctr_set_disable(u64 *state, u64 ctrsets)
|
|
{
|
|
*state &= ~(ctrsets << CPUMF_LCCTL_ENABLE_SHIFT);
|
|
}
|
|
|
|
static inline void ctr_set_start(u64 *state, u64 ctrsets)
|
|
{
|
|
*state |= ctrsets << CPUMF_LCCTL_ACTCTL_SHIFT;
|
|
}
|
|
|
|
static inline void ctr_set_stop(u64 *state, u64 ctrsets)
|
|
{
|
|
*state &= ~(ctrsets << CPUMF_LCCTL_ACTCTL_SHIFT);
|
|
}
|
|
|
|
static inline int ctr_stcctm(enum cpumf_ctr_set set, u64 range, u64 *dest)
|
|
{
|
|
switch (set) {
|
|
case CPUMF_CTR_SET_BASIC:
|
|
return stcctm(BASIC, range, dest);
|
|
case CPUMF_CTR_SET_USER:
|
|
return stcctm(PROBLEM_STATE, range, dest);
|
|
case CPUMF_CTR_SET_CRYPTO:
|
|
return stcctm(CRYPTO_ACTIVITY, range, dest);
|
|
case CPUMF_CTR_SET_EXT:
|
|
return stcctm(EXTENDED, range, dest);
|
|
case CPUMF_CTR_SET_MT_DIAG:
|
|
return stcctm(MT_DIAG_CLEARING, range, dest);
|
|
case CPUMF_CTR_SET_MAX:
|
|
return 3;
|
|
}
|
|
return 3;
|
|
}
|
|
|
|
struct cpu_cf_events {
|
|
struct cpumf_ctr_info info;
|
|
atomic_t ctr_set[CPUMF_CTR_SET_MAX];
|
|
atomic64_t alert;
|
|
u64 state; /* For perf_event_open SVC */
|
|
u64 dev_state; /* For /dev/hwctr */
|
|
unsigned int flags;
|
|
size_t used; /* Bytes used in data */
|
|
size_t usedss; /* Bytes used in start/stop */
|
|
unsigned char start[PAGE_SIZE]; /* Counter set at event add */
|
|
unsigned char stop[PAGE_SIZE]; /* Counter set at event delete */
|
|
unsigned char data[PAGE_SIZE]; /* Counter set at /dev/hwctr */
|
|
unsigned int sets; /* # Counter set saved in memory */
|
|
};
|
|
DECLARE_PER_CPU(struct cpu_cf_events, cpu_cf_events);
|
|
|
|
bool kernel_cpumcf_avail(void);
|
|
int __kernel_cpumcf_begin(void);
|
|
unsigned long kernel_cpumcf_alert(int clear);
|
|
void __kernel_cpumcf_end(void);
|
|
|
|
static inline int kernel_cpumcf_begin(void)
|
|
{
|
|
if (!cpum_cf_avail())
|
|
return -ENODEV;
|
|
|
|
preempt_disable();
|
|
return __kernel_cpumcf_begin();
|
|
}
|
|
static inline void kernel_cpumcf_end(void)
|
|
{
|
|
__kernel_cpumcf_end();
|
|
preempt_enable();
|
|
}
|
|
|
|
/* Return true if store counter set multiple instruction is available */
|
|
static inline int stccm_avail(void)
|
|
{
|
|
return test_facility(142);
|
|
}
|
|
|
|
size_t cpum_cf_ctrset_size(enum cpumf_ctr_set ctrset,
|
|
struct cpumf_ctr_info *info);
|
|
int cfset_online_cpu(unsigned int cpu);
|
|
int cfset_offline_cpu(unsigned int cpu);
|
|
#endif /* _ASM_S390_CPU_MCF_H */
|