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[S390] virtualization aware cpu measurement

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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>
This commit is contained in:
Carsten Otte
2010-05-17 10:00:04 +02:00
committed by Martin Schwidefsky
parent 6377981faf
commit cd3b70f5d4
8 changed files with 105 additions and 26 deletions
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5
arch/s390/include/asm/setup.h
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@@ -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 @@ extern unsigned int user_mode;
#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 @@ extern unsigned int user_mode;
#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 @@ extern unsigned int user_mode;
#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)