[S390] virtualization aware cpu measurement
Use the SPP instruction to set a tag on entry to / exit of the virtual
machine context. This allows the cpu measurement facility to distinguish
the samples from the host and the different guests.
Signed-off-by: Carsten Otte <cotte@de.ibm.com>
diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h
index 2c02d46..0f97ef2 100644
--- a/arch/s390/include/asm/lowcore.h
+++ b/arch/s390/include/asm/lowcore.h
@@ -267,7 +267,8 @@
__u64 vdso_per_cpu_data; /* 0x0358 */
__u64 machine_flags; /* 0x0360 */
__u64 ftrace_func; /* 0x0368 */
- __u8 pad_0x0370[0x0380-0x0370]; /* 0x0370 */
+ __u64 sie_hook; /* 0x0370 */
+ __u64 cmf_hpp; /* 0x0378 */
/* Interrupt response block. */
__u8 irb[64]; /* 0x0380 */
diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h
index 9ab6bd3..25e831d 100644
--- a/arch/s390/include/asm/setup.h
+++ b/arch/s390/include/asm/setup.h
@@ -2,7 +2,7 @@
* include/asm-s390/setup.h
*
* S390 version
- * Copyright IBM Corp. 1999,2006
+ * Copyright IBM Corp. 1999,2010
*/
#ifndef _ASM_S390_SETUP_H
@@ -72,6 +72,7 @@
#define MACHINE_FLAG_HPAGE (1UL << 10)
#define MACHINE_FLAG_PFMF (1UL << 11)
#define MACHINE_FLAG_LPAR (1UL << 12)
+#define MACHINE_FLAG_SPP (1UL << 13)
#define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM)
#define MACHINE_IS_KVM (S390_lowcore.machine_flags & MACHINE_FLAG_KVM)
@@ -88,6 +89,7 @@
#define MACHINE_HAS_MVCOS (0)
#define MACHINE_HAS_HPAGE (0)
#define MACHINE_HAS_PFMF (0)
+#define MACHINE_HAS_SPP (0)
#else /* __s390x__ */
#define MACHINE_HAS_IEEE (1)
#define MACHINE_HAS_CSP (1)
@@ -97,6 +99,7 @@
#define MACHINE_HAS_MVCOS (S390_lowcore.machine_flags & MACHINE_FLAG_MVCOS)
#define MACHINE_HAS_HPAGE (S390_lowcore.machine_flags & MACHINE_FLAG_HPAGE)
#define MACHINE_HAS_PFMF (S390_lowcore.machine_flags & MACHINE_FLAG_PFMF)
+#define MACHINE_HAS_SPP (S390_lowcore.machine_flags & MACHINE_FLAG_SPP)
#endif /* __s390x__ */
#define ZFCPDUMP_HSA_SIZE (32UL<<20)