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-rw-r--r--arch/s390/include/asm/perf_event.h74
1 files changed, 74 insertions, 0 deletions
diff --git a/arch/s390/include/asm/perf_event.h b/arch/s390/include/asm/perf_event.h
new file mode 100644
index 000000000..b9c0e3617
--- /dev/null
+++ b/arch/s390/include/asm/perf_event.h
@@ -0,0 +1,74 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Performance event support - s390 specific definitions.
+ *
+ * Copyright IBM Corp. 2009, 2017
+ * Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
+ * Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
+ */
+
+#ifndef _ASM_S390_PERF_EVENT_H
+#define _ASM_S390_PERF_EVENT_H
+
+#include <linux/perf_event.h>
+#include <linux/device.h>
+#include <asm/cpu_mf.h>
+
+/* Per-CPU flags for PMU states */
+#define PMU_F_RESERVED 0x1000
+#define PMU_F_ENABLED 0x2000
+#define PMU_F_IN_USE 0x4000
+#define PMU_F_ERR_IBE 0x0100
+#define PMU_F_ERR_LSDA 0x0200
+#define PMU_F_ERR_MASK (PMU_F_ERR_IBE|PMU_F_ERR_LSDA)
+
+/* Perf definitions for PMU event attributes in sysfs */
+extern __init const struct attribute_group **cpumf_cf_event_group(void);
+extern ssize_t cpumf_events_sysfs_show(struct device *dev,
+ struct device_attribute *attr,
+ char *page);
+#define EVENT_VAR(_cat, _name) event_attr_##_cat##_##_name
+#define EVENT_PTR(_cat, _name) (&EVENT_VAR(_cat, _name).attr.attr)
+
+#define CPUMF_EVENT_ATTR(cat, name, id) \
+ PMU_EVENT_ATTR(name, EVENT_VAR(cat, name), id, cpumf_events_sysfs_show)
+#define CPUMF_EVENT_PTR(cat, name) EVENT_PTR(cat, name)
+
+
+/* Perf callbacks */
+struct pt_regs;
+extern unsigned long perf_instruction_pointer(struct pt_regs *regs);
+extern unsigned long perf_misc_flags(struct pt_regs *regs);
+#define perf_misc_flags(regs) perf_misc_flags(regs)
+#define perf_arch_bpf_user_pt_regs(regs) &regs->user_regs
+
+/* Perf pt_regs extension for sample-data-entry indicators */
+struct perf_sf_sde_regs {
+ unsigned char in_guest:1; /* guest sample */
+ unsigned long reserved:63; /* reserved */
+};
+
+/* Perf PMU definitions for the counter facility */
+#define PERF_CPUM_CF_MAX_CTR 0xffffUL /* Max ctr for ECCTR */
+
+/* Perf PMU definitions for the sampling facility */
+#define PERF_CPUM_SF_MAX_CTR 2
+#define PERF_EVENT_CPUM_SF 0xB0000UL /* Event: Basic-sampling */
+#define PERF_EVENT_CPUM_SF_DIAG 0xBD000UL /* Event: Combined-sampling */
+#define PERF_CPUM_SF_BASIC_MODE 0x0001 /* Basic-sampling flag */
+#define PERF_CPUM_SF_DIAG_MODE 0x0002 /* Diagnostic-sampling flag */
+#define PERF_CPUM_SF_MODE_MASK (PERF_CPUM_SF_BASIC_MODE| \
+ PERF_CPUM_SF_DIAG_MODE)
+#define PERF_CPUM_SF_FULL_BLOCKS 0x0004 /* Process full SDBs only */
+
+#define REG_NONE 0
+#define REG_OVERFLOW 1
+#define OVERFLOW_REG(hwc) ((hwc)->extra_reg.config)
+#define SFB_ALLOC_REG(hwc) ((hwc)->extra_reg.alloc)
+#define TEAR_REG(hwc) ((hwc)->last_tag)
+#define SAMPL_RATE(hwc) ((hwc)->event_base)
+#define SAMPL_FLAGS(hwc) ((hwc)->config_base)
+#define SAMPL_DIAG_MODE(hwc) (SAMPL_FLAGS(hwc) & PERF_CPUM_SF_DIAG_MODE)
+#define SDB_FULL_BLOCKS(hwc) (SAMPL_FLAGS(hwc) & PERF_CPUM_SF_FULL_BLOCKS)
+
+#endif /* _ASM_S390_PERF_EVENT_H */