Merge branch 'linus' into perfcounters/core

Merge reason: This brach was on -rc1, refresh it to almost-rc4 to pick up
              the latest upstream fixes.

Signed-off-by: Ingo Molnar <mingo@elte.hu>

11 files changed, 64 insertions, 34 deletions

diff --git a/arch/s390/include/asm/cpuid.h b/arch/s390/include/asm/cpuid.h
new file mode 100644
index 00000000000..07836a2e522
--- /dev/null
+++ b/arch/s390/include/asm/cpuid.h
@@ -0,0 +1,25 @@
+/*
+ *    Copyright IBM Corp. 2000,2009
+ *    Author(s): Hartmut Penner <hp@de.ibm.com>,
+ *		 Martin Schwidefsky <schwidefsky@de.ibm.com>
+ *		 Christian Ehrhardt <ehrhardt@de.ibm.com>
+ */
+
+#ifndef _ASM_S390_CPUID_H_
+#define _ASM_S390_CPUID_H_
+
+/*
+ *  CPU type and hardware bug flags. Kept separately for each CPU.
+ *  Members of this structure are referenced in head.S, so think twice
+ *  before touching them. [mj]
+ */
+
+typedef struct
+{
+	unsigned int version :	8;
+	unsigned int ident   : 24;
+	unsigned int machine : 16;
+	unsigned int unused  : 16;
+} __attribute__ ((packed)) cpuid_t;
+
+#endif /* _ASM_S390_CPUID_H_ */
diff --git a/arch/s390/include/asm/cputime.h b/arch/s390/include/asm/cputime.h
index 95b0f7db3c6..941384fbd39 100644
--- a/arch/s390/include/asm/cputime.h
+++ b/arch/s390/include/asm/cputime.h
@@ -174,4 +174,8 @@ cputime64_to_clock_t(cputime64_t cputime)
        return __div(cputime, 4096000000ULL / USER_HZ);
 }
 
+cputime64_t s390_get_idle_time(int cpu);
+
+#define arch_idle_time(cpu) s390_get_idle_time(cpu)
+
 #endif /* _S390_CPUTIME_H */
diff --git a/arch/s390/include/asm/kvm_host.h b/arch/s390/include/asm/kvm_host.h
index c6e674f5fca..54ea39f96ec 100644
--- a/arch/s390/include/asm/kvm_host.h
+++ b/arch/s390/include/asm/kvm_host.h
@@ -15,6 +15,7 @@
 #define ASM_KVM_HOST_H
 #include <linux/kvm_host.h>
 #include <asm/debug.h>
+#include <asm/cpuid.h>
 
 #define KVM_MAX_VCPUS 64
 #define KVM_MEMORY_SLOTS 32
diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h
index b349f1c7fdf..3aeca492b14 100644
--- a/arch/s390/include/asm/lowcore.h
+++ b/arch/s390/include/asm/lowcore.h
@@ -66,6 +66,7 @@
 #define __LC_USER_EXEC_ASCE		0x02ac
 #define __LC_CPUID			0x02b0
 #define __LC_INT_CLOCK			0x02c8
+#define __LC_MACHINE_FLAGS		0x02d8
 #define __LC_IRB			0x0300
 #define __LC_PFAULT_INTPARM		0x0080
 #define __LC_CPU_TIMER_SAVE_AREA	0x00d8
@@ -110,6 +111,7 @@
 #define __LC_CPUID			0x0320
 #define __LC_INT_CLOCK			0x0340
 #define __LC_VDSO_PER_CPU		0x0350
+#define __LC_MACHINE_FLAGS		0x0358
 #define __LC_IRB			0x0380
 #define __LC_PASTE			0x03c0
 #define __LC_PFAULT_INTPARM		0x11b8
@@ -127,9 +129,9 @@
 
 #ifndef __ASSEMBLY__
 
-#include <asm/processor.h>
+#include <asm/cpuid.h>
+#include <asm/ptrace.h>
 #include <linux/types.h>
-#include <asm/sigp.h>
 
 void restart_int_handler(void);
 void ext_int_handler(void);
@@ -277,7 +279,8 @@ struct _lowcore
 	__u32	ext_call_fast;			/* 0x02c4 */
 	__u64	int_clock;			/* 0x02c8 */
 	__u64	clock_comparator;		/* 0x02d0 */
-	__u8	pad_0x02d8[0x0300-0x02d8];	/* 0x02d8 */
+	__u32	machine_flags;			/* 0x02d8 */
+	__u8	pad_0x02dc[0x0300-0x02dc];	/* 0x02dc */
 
 	/* Interrupt response block */
 	__u8	irb[64];			/* 0x0300 */
@@ -381,7 +384,8 @@ struct _lowcore
 	__u64	int_clock;			/* 0x0340 */
 	__u64	clock_comparator;		/* 0x0348 */
 	__u64	vdso_per_cpu_data;		/* 0x0350 */
-	__u8	pad_0x0358[0x0380-0x0358];	/* 0x0358 */
+	__u64	machine_flags;			/* 0x0358 */
+	__u8	pad_0x0360[0x0380-0x0360];	/* 0x0360 */
 
 	/* Interrupt response block. */
 	__u8	irb[64];			/* 0x0380 */
diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h
index 61862b3ac79..c139fa7b8e8 100644
--- a/arch/s390/include/asm/processor.h
+++ b/arch/s390/include/asm/processor.h
@@ -14,7 +14,10 @@
 #define __ASM_S390_PROCESSOR_H
 
 #include <linux/linkage.h>
+#include <asm/cpuid.h>
+#include <asm/page.h>
 #include <asm/ptrace.h>
+#include <asm/setup.h>
 
 #ifdef __KERNEL__
 /*
@@ -23,20 +26,6 @@
  */
 #define current_text_addr() ({ void *pc; asm("basr %0,0" : "=a" (pc)); pc; })
 
-/*
- *  CPU type and hardware bug flags. Kept separately for each CPU.
- *  Members of this structure are referenced in head.S, so think twice
- *  before touching them. [mj]
- */
-
-typedef struct
-{
-        unsigned int version :  8;
-        unsigned int ident   : 24;
-        unsigned int machine : 16;
-        unsigned int unused  : 16;
-} __attribute__ ((packed)) cpuid_t;
-
 static inline void get_cpu_id(cpuid_t *ptr)
 {
 	asm volatile("stidp 0(%1)" : "=m" (*ptr) : "a" (ptr));
diff --git a/arch/s390/include/asm/ptrace.h b/arch/s390/include/asm/ptrace.h
index f1b051630c5..539263fc9ab 100644
--- a/arch/s390/include/asm/ptrace.h
+++ b/arch/s390/include/asm/ptrace.h
@@ -313,8 +313,6 @@ typedef struct
 
 
 #ifdef __KERNEL__
-#include <asm/setup.h>
-#include <asm/page.h>
 
 /*
  * The pt_regs struct defines the way the registers are stored on
diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h
index e8bd6ac22c9..38b0fc221ed 100644
--- a/arch/s390/include/asm/setup.h
+++ b/arch/s390/include/asm/setup.h
@@ -14,6 +14,7 @@
 
 #ifdef __KERNEL__
 
+#include <asm/lowcore.h>
 #include <asm/types.h>
 
 #define PARMAREA		0x10400
@@ -63,7 +64,6 @@ extern unsigned int s390_noexec;
 /*
  * Machine features detected in head.S
  */
-extern unsigned long machine_flags;
 
 #define MACHINE_FLAG_VM		(1UL << 0)
 #define MACHINE_FLAG_IEEE	(1UL << 1)
@@ -77,28 +77,28 @@ extern unsigned long machine_flags;
 #define MACHINE_FLAG_HPAGE	(1UL << 10)
 #define MACHINE_FLAG_PFMF	(1UL << 11)
 
-#define MACHINE_IS_VM		(machine_flags & MACHINE_FLAG_VM)
-#define MACHINE_IS_KVM		(machine_flags & MACHINE_FLAG_KVM)
-#define MACHINE_HAS_DIAG9C	(machine_flags & MACHINE_FLAG_DIAG9C)
+#define MACHINE_IS_VM		(S390_lowcore.machine_flags & MACHINE_FLAG_VM)
+#define MACHINE_IS_KVM		(S390_lowcore.machine_flags & MACHINE_FLAG_KVM)
+#define MACHINE_HAS_DIAG9C	(S390_lowcore.machine_flags & MACHINE_FLAG_DIAG9C)
 
 #ifndef __s390x__
-#define MACHINE_HAS_IEEE	(machine_flags & MACHINE_FLAG_IEEE)
-#define MACHINE_HAS_CSP		(machine_flags & MACHINE_FLAG_CSP)
+#define MACHINE_HAS_IEEE	(S390_lowcore.machine_flags & MACHINE_FLAG_IEEE)
+#define MACHINE_HAS_CSP		(S390_lowcore.machine_flags & MACHINE_FLAG_CSP)
 #define MACHINE_HAS_IDTE	(0)
 #define MACHINE_HAS_DIAG44	(1)
-#define MACHINE_HAS_MVPG	(machine_flags & MACHINE_FLAG_MVPG)
+#define MACHINE_HAS_MVPG	(S390_lowcore.machine_flags & MACHINE_FLAG_MVPG)
 #define MACHINE_HAS_MVCOS	(0)
 #define MACHINE_HAS_HPAGE	(0)
 #define MACHINE_HAS_PFMF	(0)
 #else /* __s390x__ */
 #define MACHINE_HAS_IEEE	(1)
 #define MACHINE_HAS_CSP		(1)
-#define MACHINE_HAS_IDTE	(machine_flags & MACHINE_FLAG_IDTE)
-#define MACHINE_HAS_DIAG44	(machine_flags & MACHINE_FLAG_DIAG44)
+#define MACHINE_HAS_IDTE	(S390_lowcore.machine_flags & MACHINE_FLAG_IDTE)
+#define MACHINE_HAS_DIAG44	(S390_lowcore.machine_flags & MACHINE_FLAG_DIAG44)
 #define MACHINE_HAS_MVPG	(1)
-#define MACHINE_HAS_MVCOS	(machine_flags & MACHINE_FLAG_MVCOS)
-#define MACHINE_HAS_HPAGE	(machine_flags & MACHINE_FLAG_HPAGE)
-#define MACHINE_HAS_PFMF	(machine_flags & MACHINE_FLAG_PFMF)
+#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)
 #endif /* __s390x__ */
 
 #define ZFCPDUMP_HSA_SIZE	(32UL<<20)
diff --git a/arch/s390/include/asm/thread_info.h b/arch/s390/include/asm/thread_info.h
index c544aa52453..461f2abd2e6 100644
--- a/arch/s390/include/asm/thread_info.h
+++ b/arch/s390/include/asm/thread_info.h
@@ -31,8 +31,9 @@
 #define ASYNC_SIZE  (PAGE_SIZE << ASYNC_ORDER)
 
 #ifndef __ASSEMBLY__
-#include <asm/processor.h>
 #include <asm/lowcore.h>
+#include <asm/page.h>
+#include <asm/processor.h>
 
 /*
  * low level task data that entry.S needs immediate access to
diff --git a/arch/s390/include/asm/timer.h b/arch/s390/include/asm/timer.h
index e4bcab739c1..814243cafdf 100644
--- a/arch/s390/include/asm/timer.h
+++ b/arch/s390/include/asm/timer.h
@@ -41,6 +41,7 @@ extern void init_virt_timer(struct vtimer_list *timer);
 extern void add_virt_timer(void *new);
 extern void add_virt_timer_periodic(void *new);
 extern int mod_virt_timer(struct vtimer_list *timer, __u64 expires);
+extern int mod_virt_timer_periodic(struct vtimer_list *timer, __u64 expires);
 extern int del_virt_timer(struct vtimer_list *timer);
 
 extern void init_cpu_vtimer(void);
diff --git a/arch/s390/include/asm/timex.h b/arch/s390/include/asm/timex.h
index d744c3d62de..cc21e3e20fd 100644
--- a/arch/s390/include/asm/timex.h
+++ b/arch/s390/include/asm/timex.h
@@ -11,6 +11,9 @@
 #ifndef _ASM_S390_TIMEX_H
 #define _ASM_S390_TIMEX_H
 
+/* The value of the TOD clock for 1.1.1970. */
+#define TOD_UNIX_EPOCH 0x7d91048bca000000ULL
+
 /* Inline functions for clock register access. */
 static inline int set_clock(__u64 time)
 {
@@ -85,4 +88,6 @@ int get_sync_clock(unsigned long long *clock);
 void init_cpu_timer(void);
 unsigned long long monotonic_clock(void);
 
+extern u64 sched_clock_base_cc;
+
 #endif
diff --git a/arch/s390/include/asm/unistd.h b/arch/s390/include/asm/unistd.h
index c8ad350d144..f0f19e6ace6 100644
--- a/arch/s390/include/asm/unistd.h
+++ b/arch/s390/include/asm/unistd.h
@@ -265,7 +265,9 @@
 #define __NR_pipe2		325
 #define __NR_dup3		326
 #define __NR_epoll_create1	327
-#define NR_syscalls 328
+#define	__NR_preadv		328
+#define	__NR_pwritev		329
+#define NR_syscalls 330
 
 /* 
  * There are some system calls that are not present on 64 bit, some