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Diffstat (limited to 'arch/s390/include/asm/perf_event.h')
-rw-r--r--arch/s390/include/asm/perf_event.h80
1 files changed, 75 insertions, 5 deletions
diff --git a/arch/s390/include/asm/perf_event.h b/arch/s390/include/asm/perf_event.h
index 1141fb3e7b21..159a8ec6da9a 100644
--- a/arch/s390/include/asm/perf_event.h
+++ b/arch/s390/include/asm/perf_event.h
@@ -1,21 +1,40 @@
/*
* Performance event support - s390 specific definitions.
*
- * Copyright IBM Corp. 2009, 2012
+ * Copyright IBM Corp. 2009, 2013
* Author(s): Martin Schwidefsky <schwidefsky@de.ibm.com>
* Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
*/
-#include <asm/cpu_mf.h>
+#ifndef _ASM_S390_PERF_EVENT_H
+#define _ASM_S390_PERF_EVENT_H
-/* CPU-measurement counter facility */
-#define PERF_CPUM_CF_MAX_CTR 256
+#ifdef CONFIG_64BIT
+
+#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 defintions 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)
-#ifdef CONFIG_64BIT
/* Perf callbacks */
struct pt_regs;
@@ -23,4 +42,55 @@ 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)
+/* 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 256
+
+/* 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 RAWSAMPLE_REG(hwc) ((hwc)->config)
+#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)
+
+/* Structure for sampling data entries to be passed as perf raw sample data
+ * to user space. Note that raw sample data must be aligned and, thus, might
+ * be padded with zeros.
+ */
+struct sf_raw_sample {
+#define SF_RAW_SAMPLE_BASIC PERF_CPUM_SF_BASIC_MODE
+#define SF_RAW_SAMPLE_DIAG PERF_CPUM_SF_DIAG_MODE
+ u64 format;
+ u32 size; /* Size of sf_raw_sample */
+ u16 bsdes; /* Basic-sampling data entry size */
+ u16 dsdes; /* Diagnostic-sampling data entry size */
+ struct hws_basic_entry basic; /* Basic-sampling data entry */
+ struct hws_diag_entry diag; /* Diagnostic-sampling data entry */
+ u8 padding[]; /* Padding to next multiple of 8 */
+} __packed;
+
+/* Perf hardware reserve and release functions */
+int perf_reserve_sampling(void);
+void perf_release_sampling(void);
+
#endif /* CONFIG_64BIT */
+#endif /* _ASM_S390_PERF_EVENT_H */