Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6

* 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6: (72 commits)
  [S390] 3215/3270 console: remove wrong comment
  [S390] dasd: remove BKL from extended error reporting code
  [S390] vmlogrdr: remove BKL
  [S390] vmur: remove BKL
  [S390] zcrypt: remove BKL
  [S390] 3270: remove BKL
  [S390] vmwatchdog: remove lock_kernel() from open() function
  [S390] monwriter: remove lock_kernel() from open() function
  [S390] monreader: remove lock_kernel() from open() function
  [S390] s390: remove unused nfsd #includes
  [S390] ftrace: build ftrace.o when CONFIG_FTRACE_SYSCALLS is set for s390
  [S390] etr/stp: put correct per cpu variable
  [S390] tty3270: move keyboard compat ioctls
  [S390] sclp: improve servicability setting
  [S390] s390: use change recording override for kernel mapping
  [S390] MAINTAINERS: Add s390 drivers block
  [S390] use generic sockios.h header file
  [S390] use generic termbits.h header file
  [S390] smp: remove unused typedef and defines
  [S390] cmm: free pages on hibernate.
  ...

11 files changed, 39 insertions, 307 deletions

diff --git a/arch/s390/include/asm/atomic.h b/arch/s390/include/asm/atomic.h
index ae7c8f9f94a5..2a113d6a7dfd 100644
--- a/arch/s390/include/asm/atomic.h
+++ b/arch/s390/include/asm/atomic.h
@@ -21,7 +21,7 @@
 #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 2)
 
 #define __CS_LOOP(ptr, op_val, op_string) ({                            \
-        typeof(ptr->counter) old_val, new_val;                          \
+        int old_val, new_val;                                           \
         asm volatile(                                                   \
                 "       l       %0,%2\n"                                \
                 "0:     lr      %1,%0\n"                                \
@@ -38,7 +38,7 @@
 #else /* __GNUC__ */
 
 #define __CS_LOOP(ptr, op_val, op_string) ({                            \
-        typeof(ptr->counter) old_val, new_val;                          \
+        int old_val, new_val;                                           \
         asm volatile(                                                   \
                 "       l       %0,0(%3)\n"                             \
                 "0:     lr      %1,%0\n"                                \
@@ -143,7 +143,7 @@ static inline int atomic_add_unless(atomic_t *v, int a, int u)
 #if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ > 2)
 
 #define __CSG_LOOP(ptr, op_val, op_string) ({                           \
-        typeof(ptr->counter) old_val, new_val;                          \
+        long long old_val, new_val;                                     \
         asm volatile(                                                   \
                 "       lg      %0,%2\n"                                \
                 "0:     lgr     %1,%0\n"                                \
@@ -160,7 +160,7 @@ static inline int atomic_add_unless(atomic_t *v, int a, int u)
 #else /* __GNUC__ */
 
 #define __CSG_LOOP(ptr, op_val, op_string) ({                           \
-        typeof(ptr->counter) old_val, new_val;                          \
+        long long old_val, new_val;                                     \
         asm volatile(                                                   \
                 "       lg      %0,0(%3)\n"                             \
                 "0:     lgr     %1,%0\n"                                \
diff --git a/arch/s390/include/asm/ccwdev.h b/arch/s390/include/asm/ccwdev.h
index 2a5419551176..f4bd346a52d3 100644
--- a/arch/s390/include/asm/ccwdev.h
+++ b/arch/s390/include/asm/ccwdev.h
@@ -142,6 +142,8 @@ struct ccw1;
 extern int ccw_device_set_options_mask(struct ccw_device *, unsigned long);
 extern int ccw_device_set_options(struct ccw_device *, unsigned long);
 extern void ccw_device_clear_options(struct ccw_device *, unsigned long);
+int ccw_device_is_pathgroup(struct ccw_device *cdev);
+int ccw_device_is_multipath(struct ccw_device *cdev);
 
 /* Allow for i/o completion notification after primary interrupt status. */
 #define CCWDEV_EARLY_NOTIFICATION       0x0001
@@ -151,6 +153,8 @@ extern void ccw_device_clear_options(struct ccw_device *, unsigned long);
 #define CCWDEV_DO_PATHGROUP             0x0004
 /* Allow forced onlining of boxed devices. */
 #define CCWDEV_ALLOW_FORCE              0x0008
+/* Try to use multipath mode. */
+#define CCWDEV_DO_MULTIPATH             0x0010
 
 extern int ccw_device_start(struct ccw_device *, struct ccw1 *,
                             unsigned long, __u8, unsigned long);
diff --git a/arch/s390/include/asm/mmu_context.h b/arch/s390/include/asm/mmu_context.h
index fc7edd6f41b6..976e273988c2 100644
--- a/arch/s390/include/asm/mmu_context.h
+++ b/arch/s390/include/asm/mmu_context.h
@@ -36,7 +36,7 @@ static inline int init_new_context(struct task_struct *tsk,
                 mm->context.has_pgste = 1;
                 mm->context.alloc_pgste = 1;
         } else {
-                mm->context.noexec = s390_noexec;
+                mm->context.noexec = (user_mode == SECONDARY_SPACE_MODE);
                 mm->context.has_pgste = 0;
                 mm->context.alloc_pgste = 0;
         }
@@ -58,7 +58,7 @@ static inline void update_mm(struct mm_struct *mm, struct task_struct *tsk)
         pgd_t *pgd = mm->pgd;
 
         S390_lowcore.user_asce = mm->context.asce_bits | __pa(pgd);
-        if (switch_amode) {
+        if (user_mode != HOME_SPACE_MODE) {
                 /* Load primary space page table origin. */
                 pgd = mm->context.noexec ? get_shadow_table(pgd) : pgd;
                 S390_lowcore.user_exec_asce = mm->context.asce_bits | __pa(pgd);
diff --git a/arch/s390/include/asm/pgalloc.h b/arch/s390/include/asm/pgalloc.h
index ddad5903341c..68940d0bad91 100644
--- a/arch/s390/include/asm/pgalloc.h
+++ b/arch/s390/include/asm/pgalloc.h
@@ -143,7 +143,8 @@ static inline pgd_t *pgd_alloc(struct mm_struct *mm)
         spin_lock_init(&mm->context.list_lock);
         INIT_LIST_HEAD(&mm->context.crst_list);
         INIT_LIST_HEAD(&mm->context.pgtable_list);
-        return (pgd_t *) crst_table_alloc(mm, s390_noexec);
+        return (pgd_t *)
+                crst_table_alloc(mm, user_mode == SECONDARY_SPACE_MODE);
 }
 #define pgd_free(mm, pgd) crst_table_free(mm, (unsigned long *) pgd)
 
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index 60a7b1a1702f..e2fa79cf0614 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -169,12 +169,13 @@ extern unsigned long VMALLOC_START;
  * STL Segment-Table-Length:  Segment-table length (STL+1*16 entries -> up to 2048)
  *
  * A 64 bit pagetable entry of S390 has following format:
- * |                     PFRA                         |0IP0|  OS  |
+ * |                     PFRA                         |0IPC|  OS  |
  * 0000000000111111111122222222223333333333444444444455555555556666
  * 0123456789012345678901234567890123456789012345678901234567890123
  *
  * I Page-Invalid Bit:    Page is not available for address-translation
  * P Page-Protection Bit: Store access not possible for page
+ * C Change-bit override: HW is not required to set change bit
  *
  * A 64 bit segmenttable entry of S390 has following format:
  * |        P-table origin                              |      TT
@@ -218,6 +219,7 @@ extern unsigned long VMALLOC_START;
  */
 
 /* Hardware bits in the page table entry */
+#define _PAGE_CO        0x100           /* HW Change-bit override */
 #define _PAGE_RO        0x200           /* HW read-only bit  */
 #define _PAGE_INVALID   0x400           /* HW invalid bit    */
 
diff --git a/arch/s390/include/asm/setup.h b/arch/s390/include/asm/setup.h
index e37478e87286..52a779c337e8 100644
--- a/arch/s390/include/asm/setup.h
+++ b/arch/s390/include/asm/setup.h
@@ -49,17 +49,12 @@ extern unsigned long memory_end;
 
 void detect_memory_layout(struct mem_chunk chunk[]);
 
-#ifdef CONFIG_S390_SWITCH_AMODE
-extern unsigned int switch_amode;
-#else
-#define switch_amode    (0)
-#endif
-
-#ifdef CONFIG_S390_EXEC_PROTECT
-extern unsigned int s390_noexec;
-#else
-#define s390_noexec     (0)
-#endif
+#define PRIMARY_SPACE_MODE      0
+#define ACCESS_REGISTER_MODE    1
+#define SECONDARY_SPACE_MODE    2
+#define HOME_SPACE_MODE         3
+
+extern unsigned int user_mode;
 
 /*
  * Machine features detected in head.S
diff --git a/arch/s390/include/asm/smp.h b/arch/s390/include/asm/smp.h
index a868b272c257..2ab1141eeb50 100644
--- a/arch/s390/include/asm/smp.h
+++ b/arch/s390/include/asm/smp.h
@@ -1,57 +1,22 @@
 /*
- *  include/asm-s390/smp.h
- *
- *  S390 version
- *    Copyright (C) 1999 IBM Deutschland Entwicklung GmbH, IBM Corporation
- *    Author(s): Denis Joseph Barrow (djbarrow@de.ibm.com,barrow_dj@yahoo.com),
- *               Martin Schwidefsky (schwidefsky@de.ibm.com)
- *               Heiko Carstens (heiko.carstens@de.ibm.com)
+ *    Copyright IBM Corp. 1999,2009
+ *    Author(s): Denis Joseph Barrow,
+ *               Martin Schwidefsky <schwidefsky@de.ibm.com>,
+ *               Heiko Carstens <heiko.carstens@de.ibm.com>,
  */
 #ifndef __ASM_SMP_H
 #define __ASM_SMP_H
 
-#include <linux/threads.h>
-#include <linux/cpumask.h>
-#include <linux/bitops.h>
+#ifdef CONFIG_SMP
 
-#if defined(__KERNEL__) && defined(CONFIG_SMP) && !defined(__ASSEMBLY__)
-
-#include <asm/lowcore.h>
-#include <asm/sigp.h>
-#include <asm/ptrace.h>
 #include <asm/system.h>
-
-/*
-  s390 specific smp.c headers
- */
-typedef struct
-{
-        int        intresting;
-        sigp_ccode ccode; 
-        __u32      status;
-        __u16      cpu;
-} sigp_info;
+#include <asm/sigp.h>
 
 extern void machine_restart_smp(char *);
 extern void machine_halt_smp(void);
 extern void machine_power_off_smp(void);
 
-#define NO_PROC_ID              0xFF            /* No processor magic marker */
-
-/*
- *      This magic constant controls our willingness to transfer
- *      a process across CPUs. Such a transfer incurs misses on the L1
- *      cache, and on a P6 or P5 with multiple L2 caches L2 hits. My
- *      gut feeling is this will vary by board in value. For a board
- *      with separate L2 cache it probably depends also on the RSS, and
- *      for a board with shared L2 cache it ought to decay fast as other
- *      processes are run.
- */
- 
-#define PROC_CHANGE_PENALTY     20              /* Schedule penalty */
-
 #define raw_smp_processor_id()  (S390_lowcore.cpu_nr)
-#define cpu_logical_map(cpu)    (cpu)
 
 extern int __cpu_disable (void);
 extern void __cpu_die (unsigned int cpu);
@@ -64,7 +29,9 @@ extern int smp_cpu_polarization[];
 extern void arch_send_call_function_single_ipi(int cpu);
 extern void arch_send_call_function_ipi_mask(const struct cpumask *mask);
 
-#endif
+extern union save_area *zfcpdump_save_areas[NR_CPUS + 1];
+
+#endif /* CONFIG_SMP */
 
 #ifdef CONFIG_HOTPLUG_CPU
 extern int smp_rescan_cpus(void);
@@ -72,5 +39,4 @@ extern int smp_rescan_cpus(void);
 static inline int smp_rescan_cpus(void) { return 0; }
 #endif
 
-extern union save_area *zfcpdump_save_areas[NR_CPUS + 1];
-#endif
+#endif /* __ASM_SMP_H */
diff --git a/arch/s390/include/asm/sockios.h b/arch/s390/include/asm/sockios.h
index f4fc16c7da59..6f60eee73242 100644
--- a/arch/s390/include/asm/sockios.h
+++ b/arch/s390/include/asm/sockios.h
@@ -1,21 +1,6 @@
-/*
- *  include/asm-s390/sockios.h
- *
- *  S390 version
- *
- *  Derived from "include/asm-i386/sockios.h"
- */
+#ifndef _ASM_S390_SOCKIOS_H
+#define _ASM_S390_SOCKIOS_H
 
-#ifndef __ARCH_S390_SOCKIOS__
-#define __ARCH_S390_SOCKIOS__
-
-/* Socket-level I/O control calls. */
-#define FIOSETOWN       0x8901
-#define SIOCSPGRP       0x8902
-#define FIOGETOWN       0x8903
-#define SIOCGPGRP       0x8904
-#define SIOCATMARK      0x8905
-#define SIOCGSTAMP      0x8906          /* Get stamp (timeval) */
-#define SIOCGSTAMPNS    0x8907          /* Get stamp (timespec) */
+#include <asm-generic/sockios.h>
 
 #endif
diff --git a/arch/s390/include/asm/termbits.h b/arch/s390/include/asm/termbits.h
index 58731853d529..71bf6ac6a2b9 100644
--- a/arch/s390/include/asm/termbits.h
+++ b/arch/s390/include/asm/termbits.h
@@ -1,206 +1,6 @@
-/*
- *  include/asm-s390/termbits.h
- *
- *  S390 version
- *
- *  Derived from "include/asm-i386/termbits.h"
- */
+#ifndef _ASM_S390_TERMBITS_H
+#define _ASM_S390_TERMBITS_H
 
-#ifndef __ARCH_S390_TERMBITS_H__
-#define __ARCH_S390_TERMBITS_H__
-
-#include <linux/posix_types.h>
-
-typedef unsigned char   cc_t;
-typedef unsigned int    speed_t;
-typedef unsigned int    tcflag_t;
-
-#define NCCS 19
-struct termios {
-        tcflag_t c_iflag;               /* input mode flags */
-        tcflag_t c_oflag;               /* output mode flags */
-        tcflag_t c_cflag;               /* control mode flags */
-        tcflag_t c_lflag;               /* local mode flags */
-        cc_t c_line;                    /* line discipline */
-        cc_t c_cc[NCCS];                /* control characters */
-};
-
-struct termios2 {
-        tcflag_t c_iflag;               /* input mode flags */
-        tcflag_t c_oflag;               /* output mode flags */
-        tcflag_t c_cflag;               /* control mode flags */
-        tcflag_t c_lflag;               /* local mode flags */
-        cc_t c_line;                    /* line discipline */
-        cc_t c_cc[NCCS];                /* control characters */
-        speed_t c_ispeed;               /* input speed */
-        speed_t c_ospeed;               /* output speed */
-};
-
-struct ktermios {
-        tcflag_t c_iflag;               /* input mode flags */
-        tcflag_t c_oflag;               /* output mode flags */
-        tcflag_t c_cflag;               /* control mode flags */
-        tcflag_t c_lflag;               /* local mode flags */
-        cc_t c_line;                    /* line discipline */
-        cc_t c_cc[NCCS];                /* control characters */
-        speed_t c_ispeed;               /* input speed */
-        speed_t c_ospeed;               /* output speed */
-};
-
-/* c_cc characters */
-#define VINTR 0
-#define VQUIT 1
-#define VERASE 2
-#define VKILL 3
-#define VEOF 4
-#define VTIME 5
-#define VMIN 6
-#define VSWTC 7
-#define VSTART 8
-#define VSTOP 9
-#define VSUSP 10
-#define VEOL 11
-#define VREPRINT 12
-#define VDISCARD 13
-#define VWERASE 14
-#define VLNEXT 15
-#define VEOL2 16
-
-/* c_iflag bits */
-#define IGNBRK  0000001
-#define BRKINT  0000002
-#define IGNPAR  0000004
-#define PARMRK  0000010
-#define INPCK   0000020
-#define ISTRIP  0000040
-#define INLCR   0000100
-#define IGNCR   0000200
-#define ICRNL   0000400
-#define IUCLC   0001000
-#define IXON    0002000
-#define IXANY   0004000
-#define IXOFF   0010000
-#define IMAXBEL 0020000
-#define IUTF8   0040000
-
-/* c_oflag bits */
-#define OPOST   0000001
-#define OLCUC   0000002
-#define ONLCR   0000004
-#define OCRNL   0000010
-#define ONOCR   0000020
-#define ONLRET  0000040
-#define OFILL   0000100
-#define OFDEL   0000200
-#define NLDLY   0000400
-#define   NL0   0000000
-#define   NL1   0000400
-#define CRDLY   0003000
-#define   CR0   0000000
-#define   CR1   0001000
-#define   CR2   0002000
-#define   CR3   0003000
-#define TABDLY  0014000
-#define   TAB0  0000000
-#define   TAB1  0004000
-#define   TAB2  0010000
-#define   TAB3  0014000
-#define   XTABS 0014000
-#define BSDLY   0020000
-#define   BS0   0000000
-#define   BS1   0020000
-#define VTDLY   0040000
-#define   VT0   0000000
-#define   VT1   0040000
-#define FFDLY   0100000
-#define   FF0   0000000
-#define   FF1   0100000
-
-/* c_cflag bit meaning */
-#define CBAUD   0010017
-#define  B0     0000000         /* hang up */
-#define  B50    0000001
-#define  B75    0000002
-#define  B110   0000003
-#define  B134   0000004
-#define  B150   0000005
-#define  B200   0000006
-#define  B300   0000007
-#define  B600   0000010
-#define  B1200  0000011
-#define  B1800  0000012
-#define  B2400  0000013
-#define  B4800  0000014
-#define  B9600  0000015
-#define  B19200 0000016
-#define  B38400 0000017
-#define EXTA B19200
-#define EXTB B38400
-#define CSIZE   0000060
-#define   CS5   0000000
-#define   CS6   0000020
-#define   CS7   0000040
-#define   CS8   0000060
-#define CSTOPB  0000100
-#define CREAD   0000200
-#define PARENB  0000400
-#define PARODD  0001000
-#define HUPCL   0002000
-#define CLOCAL  0004000
-#define CBAUDEX 0010000
-#define  BOTHER  0010000
-#define  B57600  0010001
-#define  B115200 0010002
-#define  B230400 0010003
-#define  B460800 0010004
-#define   B500000 0010005
-#define   B576000 0010006
-#define   B921600 0010007
-#define  B1000000 0010010
-#define  B1152000 0010011
-#define  B1500000 0010012
-#define  B2000000 0010013
-#define  B2500000 0010014
-#define  B3000000 0010015
-#define  B3500000 0010016
-#define  B4000000 0010017
-#define CIBAUD    002003600000  /* input baud rate */
-#define CMSPAR    010000000000          /* mark or space (stick) parity */
-#define CRTSCTS   020000000000          /* flow control */
-
-#define IBSHIFT   16            /* Shift from CBAUD to CIBAUD */
-
-/* c_lflag bits */
-#define ISIG    0000001
-#define ICANON  0000002
-#define XCASE   0000004
-#define ECHO    0000010
-#define ECHOE   0000020
-#define ECHOK   0000040
-#define ECHONL  0000100
-#define NOFLSH  0000200
-#define TOSTOP  0000400
-#define ECHOCTL 0001000
-#define ECHOPRT 0002000
-#define ECHOKE  0004000
-#define FLUSHO  0010000
-#define PENDIN  0040000
-#define IEXTEN  0100000
-
-/* tcflow() and TCXONC use these */
-#define TCOOFF          0
-#define TCOON           1
-#define TCIOFF          2
-#define TCION           3
-
-/* tcflush() and TCFLSH use these */
-#define TCIFLUSH        0
-#define TCOFLUSH        1
-#define TCIOFLUSH       2
-
-/* tcsetattr uses these */
-#define TCSANOW         0
-#define TCSADRAIN       1
-#define TCSAFLUSH       2
+#include <asm-generic/termbits.h>
 
 #endif
diff --git a/arch/s390/include/asm/todclk.h b/arch/s390/include/asm/todclk.h
deleted file mode 100644
index c7f62055488a..000000000000
--- a/arch/s390/include/asm/todclk.h
+++ /dev/null
@@ -1,23 +0,0 @@
-/*
- * File...........: linux/include/asm/todclk.h
- * Author(s)......: Holger Smolinski <Holger.Smolinski@de.ibm.com>
- * Bugreports.to..: <Linux390@de.ibm.com>
- * (C) IBM Corporation, IBM Deutschland Entwicklung GmbH, 1999,2000
- *
- * History of changes (starts July 2000)
- */
-
-#ifndef __ASM_TODCLK_H
-#define __ASM_TODCLK_H
-
-#ifdef __KERNEL__
-
-#define TOD_uSEC (0x1000ULL)
-#define TOD_mSEC (1000 * TOD_uSEC)
-#define TOD_SEC (1000 * TOD_mSEC)
-#define TOD_MIN (60 * TOD_SEC)
-#define TOD_HOUR (60 * TOD_MIN)
-
-#endif
-
-#endif
diff --git a/arch/s390/include/asm/uaccess.h b/arch/s390/include/asm/uaccess.h
index 8377e91533d2..cbf0a8745bf4 100644
--- a/arch/s390/include/asm/uaccess.h
+++ b/arch/s390/include/asm/uaccess.h
@@ -93,6 +93,8 @@ extern struct uaccess_ops uaccess_mvcos;
 extern struct uaccess_ops uaccess_mvcos_switch;
 extern struct uaccess_ops uaccess_pt;
 
+extern int __handle_fault(unsigned long, unsigned long, int);
+
 static inline int __put_user_fn(size_t size, void __user *ptr, void *x)
 {
         size = uaccess.copy_to_user_small(size, ptr, x);