s390/cpum_sf: Detect KVM guest samples

[karo-tx-linux.git] / arch / s390 / include / asm / perf_event.h

diff --git a/arch/s390/include/asm/perf_event.h b/arch/s390/include/asm/perf_event.h
index 1141fb3e7b21e6ad2e915835eb571301982cf29e..7667bde37dcb50ecb0f8705294cb3a07137fddad 100644 (file)
--- 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 +42,29 @@ 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           1
+#define PERF_EVENT_CPUM_SF             0xB0000UL       /* Raw event ID */
+
+#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)
+
+/* 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 */