diff options
26 files changed, 478 insertions, 417 deletions
diff --git a/arch/s390/defconfig b/arch/s390/defconfig index 4e91a2573cc4..ab4464486b7a 100644 --- a/arch/s390/defconfig +++ b/arch/s390/defconfig @@ -1,7 +1,7 @@ # # Automatically generated make config: don't edit -# Linux kernel version: 2.6.30 -# Mon Jun 22 11:08:16 2009 +# Linux kernel version: 2.6.31 +# Tue Sep 22 17:43:13 2009 # CONFIG_SCHED_MC=y CONFIG_MMU=y @@ -24,6 +24,7 @@ CONFIG_PGSTE=y CONFIG_VIRT_CPU_ACCOUNTING=y CONFIG_ARCH_SUPPORTS_DEBUG_PAGEALLOC=y CONFIG_S390=y +CONFIG_SCHED_OMIT_FRAME_POINTER=y CONFIG_DEFCONFIG_LIST="/lib/modules/$UNAME_RELEASE/.config" CONFIG_CONSTRUCTORS=y @@ -48,11 +49,12 @@ CONFIG_AUDIT=y # # RCU Subsystem # -CONFIG_CLASSIC_RCU=y -# CONFIG_TREE_RCU is not set -# CONFIG_PREEMPT_RCU is not set +CONFIG_TREE_RCU=y +# CONFIG_TREE_PREEMPT_RCU is not set +# CONFIG_RCU_TRACE is not set +CONFIG_RCU_FANOUT=64 +# CONFIG_RCU_FANOUT_EXACT is not set # CONFIG_TREE_RCU_TRACE is not set -# CONFIG_PREEMPT_RCU_TRACE is not set CONFIG_IKCONFIG=y CONFIG_IKCONFIG_PROC=y CONFIG_LOG_BUF_SHIFT=17 @@ -103,11 +105,12 @@ CONFIG_TIMERFD=y CONFIG_EVENTFD=y CONFIG_SHMEM=y CONFIG_AIO=y -CONFIG_HAVE_PERF_COUNTERS=y +CONFIG_HAVE_PERF_EVENTS=y # -# Performance Counters +# Kernel Performance Events And Counters # +# CONFIG_PERF_EVENTS is not set # CONFIG_PERF_COUNTERS is not set CONFIG_VM_EVENT_COUNTERS=y # CONFIG_STRIP_ASM_SYMS is not set @@ -116,7 +119,6 @@ CONFIG_SLAB=y # CONFIG_SLUB is not set # CONFIG_SLOB is not set # CONFIG_PROFILING is not set -# CONFIG_MARKERS is not set CONFIG_HAVE_OPROFILE=y CONFIG_KPROBES=y CONFIG_HAVE_SYSCALL_WRAPPERS=y @@ -176,6 +178,7 @@ CONFIG_NO_HZ=y CONFIG_HIGH_RES_TIMERS=y CONFIG_GENERIC_CLOCKEVENTS_BUILD=y CONFIG_64BIT=y +# CONFIG_KTIME_SCALAR is not set CONFIG_SMP=y CONFIG_NR_CPUS=32 CONFIG_HOTPLUG_CPU=y @@ -257,7 +260,6 @@ CONFIG_FORCE_MAX_ZONEORDER=9 CONFIG_PFAULT=y # CONFIG_SHARED_KERNEL is not set # CONFIG_CMM is not set -# CONFIG_PAGE_STATES is not set # CONFIG_APPLDATA_BASE is not set CONFIG_HZ_100=y # CONFIG_HZ_250 is not set @@ -280,6 +282,7 @@ CONFIG_PM_SLEEP_SMP=y CONFIG_PM_SLEEP=y CONFIG_HIBERNATION=y CONFIG_PM_STD_PARTITION="" +# CONFIG_PM_RUNTIME is not set CONFIG_NET=y # @@ -394,6 +397,7 @@ CONFIG_IP_SCTP=m # CONFIG_SCTP_HMAC_NONE is not set # CONFIG_SCTP_HMAC_SHA1 is not set CONFIG_SCTP_HMAC_MD5=y +# CONFIG_RDS is not set # CONFIG_TIPC is not set # CONFIG_ATM is not set # CONFIG_BRIDGE is not set @@ -487,6 +491,7 @@ CONFIG_CCW=y # Generic Driver Options # CONFIG_UEVENT_HELPER_PATH="/sbin/hotplug" +# CONFIG_DEVTMPFS is not set CONFIG_STANDALONE=y CONFIG_PREVENT_FIRMWARE_BUILD=y CONFIG_FW_LOADER=y @@ -501,6 +506,7 @@ CONFIG_BLK_DEV=y CONFIG_BLK_DEV_LOOP=m # CONFIG_BLK_DEV_CRYPTOLOOP is not set CONFIG_BLK_DEV_NBD=m +# CONFIG_BLK_DEV_OSD is not set CONFIG_BLK_DEV_RAM=y CONFIG_BLK_DEV_RAM_COUNT=16 CONFIG_BLK_DEV_RAM_SIZE=4096 @@ -594,8 +600,11 @@ CONFIG_BLK_DEV_DM=y CONFIG_DM_CRYPT=y CONFIG_DM_SNAPSHOT=y CONFIG_DM_MIRROR=y +# CONFIG_DM_LOG_USERSPACE is not set CONFIG_DM_ZERO=y CONFIG_DM_MULTIPATH=m +# CONFIG_DM_MULTIPATH_QL is not set +# CONFIG_DM_MULTIPATH_ST is not set # CONFIG_DM_DELAY is not set # CONFIG_DM_UEVENT is not set CONFIG_NETDEVICES=y @@ -615,7 +624,6 @@ CONFIG_NET_ETHERNET=y # CONFIG_IBM_NEW_EMAC_NO_FLOW_CTRL is not set # CONFIG_IBM_NEW_EMAC_MAL_CLR_ICINTSTAT is not set # CONFIG_IBM_NEW_EMAC_MAL_COMMON_ERR is not set -# CONFIG_KS8842 is not set CONFIG_NETDEV_1000=y CONFIG_NETDEV_10000=y # CONFIG_TR is not set @@ -678,6 +686,7 @@ CONFIG_SCLP_CONSOLE=y CONFIG_SCLP_VT220_TTY=y CONFIG_SCLP_VT220_CONSOLE=y CONFIG_SCLP_CPI=m +CONFIG_SCLP_ASYNC=m CONFIG_S390_TAPE=m # @@ -737,6 +746,7 @@ CONFIG_FS_POSIX_ACL=y # CONFIG_GFS2_FS is not set # CONFIG_OCFS2_FS is not set # CONFIG_BTRFS_FS is not set +# CONFIG_NILFS2_FS is not set CONFIG_FILE_LOCKING=y CONFIG_FSNOTIFY=y CONFIG_DNOTIFY=y @@ -798,7 +808,6 @@ CONFIG_MISC_FILESYSTEMS=y # CONFIG_SYSV_FS is not set # CONFIG_UFS_FS is not set # CONFIG_EXOFS_FS is not set -# CONFIG_NILFS2_FS is not set CONFIG_NETWORK_FILESYSTEMS=y CONFIG_NFS_FS=y CONFIG_NFS_V3=y @@ -885,11 +894,13 @@ CONFIG_DEBUG_MEMORY_INIT=y # CONFIG_DEBUG_LIST is not set # CONFIG_DEBUG_SG is not set # CONFIG_DEBUG_NOTIFIERS is not set +# CONFIG_DEBUG_CREDENTIALS is not set # CONFIG_RCU_TORTURE_TEST is not set # CONFIG_RCU_CPU_STALL_DETECTOR is not set # CONFIG_KPROBES_SANITY_TEST is not set # CONFIG_BACKTRACE_SELF_TEST is not set # CONFIG_DEBUG_BLOCK_EXT_DEVT is not set +CONFIG_DEBUG_FORCE_WEAK_PER_CPU=y # CONFIG_LKDTM is not set # CONFIG_FAULT_INJECTION is not set # CONFIG_LATENCYTOP is not set @@ -979,11 +990,13 @@ CONFIG_CRYPTO_PCBC=m # CONFIG_CRYPTO_HMAC=m # CONFIG_CRYPTO_XCBC is not set +CONFIG_CRYPTO_VMAC=m # # Digest # CONFIG_CRYPTO_CRC32C=m +CONFIG_CRYPTO_GHASH=m # CONFIG_CRYPTO_MD4 is not set CONFIG_CRYPTO_MD5=m # CONFIG_CRYPTO_MICHAEL_MIC is not set diff --git a/arch/s390/include/asm/lowcore.h b/arch/s390/include/asm/lowcore.h index 6bc9426a6fbf..f2ef4b619ce1 100644 --- a/arch/s390/include/asm/lowcore.h +++ b/arch/s390/include/asm/lowcore.h @@ -86,6 +86,7 @@ #define __LC_PGM_OLD_PSW 0x0150 #define __LC_MCK_OLD_PSW 0x0160 #define __LC_IO_OLD_PSW 0x0170 +#define __LC_RESTART_PSW 0x01a0 #define __LC_EXT_NEW_PSW 0x01b0 #define __LC_SVC_NEW_PSW 0x01c0 #define __LC_PGM_NEW_PSW 0x01d0 @@ -189,6 +190,14 @@ union save_area { #define SAVE_AREA_BASE SAVE_AREA_BASE_S390X #endif +#ifndef __s390x__ +#define LC_ORDER 0 +#else +#define LC_ORDER 1 +#endif + +#define LC_PAGES (1UL << LC_ORDER) + struct _lowcore { #ifndef __s390x__ diff --git a/arch/s390/include/asm/processor.h b/arch/s390/include/asm/processor.h index cf8eed3fa779..b42715458312 100644 --- a/arch/s390/include/asm/processor.h +++ b/arch/s390/include/asm/processor.h @@ -295,7 +295,7 @@ static inline void ATTRIB_NORET disabled_wait(unsigned long code) " oi 0x384(1),0x10\n"/* fake protection bit */ " lpswe 0(%1)" : "=m" (ctl_buf) - : "a" (&dw_psw), "a" (&ctl_buf), "m" (dw_psw) : "cc", "0"); + : "a" (&dw_psw), "a" (&ctl_buf), "m" (dw_psw) : "cc", "0", "1"); #endif /* __s390x__ */ while (1); } diff --git a/arch/s390/kernel/asm-offsets.c b/arch/s390/kernel/asm-offsets.c index fa9905ce7d0b..63e46433e81d 100644 --- a/arch/s390/kernel/asm-offsets.c +++ b/arch/s390/kernel/asm-offsets.c @@ -7,6 +7,7 @@ #include <linux/sched.h> #include <linux/kbuild.h> #include <asm/vdso.h> +#include <asm/sigp.h> int main(void) { @@ -59,6 +60,10 @@ int main(void) DEFINE(CLOCK_REALTIME, CLOCK_REALTIME); DEFINE(CLOCK_MONOTONIC, CLOCK_MONOTONIC); DEFINE(CLOCK_REALTIME_RES, MONOTONIC_RES_NSEC); - + /* constants for SIGP */ + DEFINE(__SIGP_STOP, sigp_stop); + DEFINE(__SIGP_RESTART, sigp_restart); + DEFINE(__SIGP_SENSE, sigp_sense); + DEFINE(__SIGP_INITIAL_CPU_RESET, sigp_initial_cpu_reset); return 0; } diff --git a/arch/s390/kernel/compat_linux.c b/arch/s390/kernel/compat_linux.c index 9ab188d67a3d..5519cb745106 100644 --- a/arch/s390/kernel/compat_linux.c +++ b/arch/s390/kernel/compat_linux.c @@ -443,66 +443,28 @@ sys32_rt_sigqueueinfo(int pid, int sig, compat_siginfo_t __user *uinfo) * sys32_execve() executes a new program after the asm stub has set * things up for us. This should basically do what I want it to. */ -asmlinkage long sys32_execve(void) +asmlinkage long sys32_execve(char __user *name, compat_uptr_t __user *argv, + compat_uptr_t __user *envp) { struct pt_regs *regs = task_pt_regs(current); char *filename; - unsigned long result; - int rc; - - filename = getname(compat_ptr(regs->orig_gpr2)); - if (IS_ERR(filename)) { - result = PTR_ERR(filename); - goto out; - } - rc = compat_do_execve(filename, compat_ptr(regs->gprs[3]), - compat_ptr(regs->gprs[4]), regs); - if (rc) { - result = rc; - goto out_putname; - } + long rc; + + filename = getname(name); + rc = PTR_ERR(filename); + if (IS_ERR(filename)) + return rc; + rc = compat_do_execve(filename, argv, envp, regs); + if (rc) + goto out; current->thread.fp_regs.fpc=0; asm volatile("sfpc %0,0" : : "d" (0)); - result = regs->gprs[2]; -out_putname: - putname(filename); + rc = regs->gprs[2]; out: - return result; -} - - -#ifdef CONFIG_MODULES - -asmlinkage long -sys32_init_module(void __user *umod, unsigned long len, - const char __user *uargs) -{ - return sys_init_module(umod, len, uargs); -} - -asmlinkage long -sys32_delete_module(const char __user *name_user, unsigned int flags) -{ - return sys_delete_module(name_user, flags); -} - -#else /* CONFIG_MODULES */ - -asmlinkage long -sys32_init_module(void __user *umod, unsigned long len, - const char __user *uargs) -{ - return -ENOSYS; + putname(filename); + return rc; } -asmlinkage long -sys32_delete_module(const char __user *name_user, unsigned int flags) -{ - return -ENOSYS; -} - -#endif /* CONFIG_MODULES */ - asmlinkage long sys32_pread64(unsigned int fd, char __user *ubuf, size_t count, u32 poshi, u32 poslo) { @@ -801,23 +763,6 @@ asmlinkage long sys32_write(unsigned int fd, char __user * buf, size_t count) return sys_write(fd, buf, count); } -asmlinkage long sys32_clone(void) -{ - struct pt_regs *regs = task_pt_regs(current); - unsigned long clone_flags; - unsigned long newsp; - int __user *parent_tidptr, *child_tidptr; - - clone_flags = regs->gprs[3] & 0xffffffffUL; - newsp = regs->orig_gpr2 & 0x7fffffffUL; - parent_tidptr = compat_ptr(regs->gprs[4]); - child_tidptr = compat_ptr(regs->gprs[5]); - if (!newsp) - newsp = regs->gprs[15]; - return do_fork(clone_flags, newsp, regs, 0, - parent_tidptr, child_tidptr); -} - /* * 31 bit emulation wrapper functions for sys_fadvise64/fadvise64_64. * These need to rewrite the advise values for POSIX_FADV_{DONTNEED,NOREUSE} diff --git a/arch/s390/kernel/compat_linux.h b/arch/s390/kernel/compat_linux.h index 836a28842900..c07f9ca05ade 100644 --- a/arch/s390/kernel/compat_linux.h +++ b/arch/s390/kernel/compat_linux.h @@ -198,7 +198,8 @@ long sys32_rt_sigprocmask(int how, compat_sigset_t __user *set, compat_sigset_t __user *oset, size_t sigsetsize); long sys32_rt_sigpending(compat_sigset_t __user *set, size_t sigsetsize); long sys32_rt_sigqueueinfo(int pid, int sig, compat_siginfo_t __user *uinfo); -long sys32_execve(void); +long sys32_execve(char __user *name, compat_uptr_t __user *argv, + compat_uptr_t __user *envp); long sys32_init_module(void __user *umod, unsigned long len, const char __user *uargs); long sys32_delete_module(const char __user *name_user, unsigned int flags); @@ -222,7 +223,6 @@ unsigned long old32_mmap(struct mmap_arg_struct_emu31 __user *arg); long sys32_mmap2(struct mmap_arg_struct_emu31 __user *arg); long sys32_read(unsigned int fd, char __user * buf, size_t count); long sys32_write(unsigned int fd, char __user * buf, size_t count); -long sys32_clone(void); long sys32_fadvise64(int fd, loff_t offset, size_t len, int advise); long sys32_fadvise64_64(struct fadvise64_64_args __user *args); long sys32_sigaction(int sig, const struct old_sigaction32 __user *act, diff --git a/arch/s390/kernel/compat_wrapper.S b/arch/s390/kernel/compat_wrapper.S index 624790042d41..682fb69dba21 100644 --- a/arch/s390/kernel/compat_wrapper.S +++ b/arch/s390/kernel/compat_wrapper.S @@ -568,18 +568,18 @@ compat_sys_sigprocmask_wrapper: llgtr %r4,%r4 # compat_old_sigset_t * jg compat_sys_sigprocmask # branch to system call - .globl sys32_init_module_wrapper -sys32_init_module_wrapper: + .globl sys_init_module_wrapper +sys_init_module_wrapper: llgtr %r2,%r2 # void * llgfr %r3,%r3 # unsigned long llgtr %r4,%r4 # char * - jg sys32_init_module # branch to system call + jg sys_init_module # branch to system call - .globl sys32_delete_module_wrapper -sys32_delete_module_wrapper: + .globl sys_delete_module_wrapper +sys_delete_module_wrapper: llgtr %r2,%r2 # const char * llgfr %r3,%r3 # unsigned int - jg sys32_delete_module # branch to system call + jg sys_delete_module # branch to system call .globl sys32_quotactl_wrapper sys32_quotactl_wrapper: @@ -1840,3 +1840,18 @@ sys_perf_event_open_wrapper: lgfr %r5,%r5 # int llgfr %r6,%r6 # unsigned long jg sys_perf_event_open # branch to system call + + .globl sys_clone_wrapper +sys_clone_wrapper: + llgfr %r2,%r2 # unsigned long + llgfr %r3,%r3 # unsigned long + llgtr %r4,%r4 # int * + llgtr %r5,%r5 # int * + jg sys_clone # branch to system call + + .globl sys32_execve_wrapper +sys32_execve_wrapper: + llgtr %r2,%r2 # char * + llgtr %r3,%r3 # compat_uptr_t * + llgtr %r4,%r4 # compat_uptr_t * + jg sys32_execve # branch to system call diff --git a/arch/s390/kernel/entry.h b/arch/s390/kernel/entry.h index 950c59c6688b..e1e5e767ab56 100644 --- a/arch/s390/kernel/entry.h +++ b/arch/s390/kernel/entry.h @@ -42,10 +42,12 @@ long sys_s390_fadvise64_64(struct fadvise64_64_args __user *args); long sys_s390_fallocate(int fd, int mode, loff_t offset, u32 len_high, u32 len_low); long sys_fork(void); -long sys_clone(void); +long sys_clone(unsigned long newsp, unsigned long clone_flags, + int __user *parent_tidptr, int __user *child_tidptr); long sys_vfork(void); void execve_tail(void); -long sys_execve(void); +long sys_execve(char __user *name, char __user * __user *argv, + char __user * __user *envp); long sys_sigsuspend(int history0, int history1, old_sigset_t mask); long sys_sigaction(int sig, const struct old_sigaction __user *act, struct old_sigaction __user *oact); diff --git a/arch/s390/kernel/process.c b/arch/s390/kernel/process.c index 5a43f27eec13..59fe6ecc6ed3 100644 --- a/arch/s390/kernel/process.c +++ b/arch/s390/kernel/process.c @@ -32,6 +32,7 @@ #include <linux/elfcore.h> #include <linux/kernel_stat.h> #include <linux/syscalls.h> +#include <linux/compat.h> #include <asm/compat.h> #include <asm/uaccess.h> #include <asm/pgtable.h> @@ -230,17 +231,11 @@ SYSCALL_DEFINE0(fork) return do_fork(SIGCHLD, regs->gprs[15], regs, 0, NULL, NULL); } -SYSCALL_DEFINE0(clone) +SYSCALL_DEFINE4(clone, unsigned long, newsp, unsigned long, clone_flags, + int __user *, parent_tidptr, int __user *, child_tidptr) { struct pt_regs *regs = task_pt_regs(current); - unsigned long clone_flags; - unsigned long newsp; - int __user *parent_tidptr, *child_tidptr; - clone_flags = regs->gprs[3]; - newsp = regs->orig_gpr2; - parent_tidptr = (int __user *) regs->gprs[4]; - child_tidptr = (int __user *) regs->gprs[5]; if (!newsp) newsp = regs->gprs[15]; return do_fork(clone_flags, newsp, regs, 0, @@ -274,30 +269,25 @@ asmlinkage void execve_tail(void) /* * sys_execve() executes a new program. */ -SYSCALL_DEFINE0(execve) +SYSCALL_DEFINE3(execve, char __user *, name, char __user * __user *, argv, + char __user * __user *, envp) { struct pt_regs *regs = task_pt_regs(current); char *filename; - unsigned long result; - int rc; + long rc; - filename = getname((char __user *) regs->orig_gpr2); - if (IS_ERR(filename)) { - result = PTR_ERR(filename); + filename = getname(name); + rc = PTR_ERR(filename); + if (IS_ERR(filename)) + return rc; + rc = do_execve(filename, argv, envp, regs); + if (rc) goto out; - } - rc = do_execve(filename, (char __user * __user *) regs->gprs[3], - (char __user * __user *) regs->gprs[4], regs); - if (rc) { - result = rc; - goto out_putname; - } execve_tail(); - result = regs->gprs[2]; -out_putname: - putname(filename); + rc = regs->gprs[2]; out: - return result; + putname(filename); + return rc; } /* diff --git a/arch/s390/kernel/ptrace.c b/arch/s390/kernel/ptrace.c index f3ddd7ac06c5..a8738676b26c 100644 --- a/arch/s390/kernel/ptrace.c +++ b/arch/s390/kernel/ptrace.c @@ -339,24 +339,10 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) int copied, ret; switch (request) { - case PTRACE_PEEKTEXT: - case PTRACE_PEEKDATA: - /* Remove high order bit from address (only for 31 bit). */ - addr &= PSW_ADDR_INSN; - /* read word at location addr. */ - return generic_ptrace_peekdata(child, addr, data); - case PTRACE_PEEKUSR: /* read the word at location addr in the USER area. */ return peek_user(child, addr, data); - case PTRACE_POKETEXT: - case PTRACE_POKEDATA: - /* Remove high order bit from address (only for 31 bit). */ - addr &= PSW_ADDR_INSN; - /* write the word at location addr. */ - return generic_ptrace_pokedata(child, addr, data); - case PTRACE_POKEUSR: /* write the word at location addr in the USER area */ return poke_user(child, addr, data); @@ -386,8 +372,11 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data) copied += sizeof(unsigned long); } return 0; + default: + /* Removing high order bit from addr (only for 31 bit). */ + addr &= PSW_ADDR_INSN; + return ptrace_request(child, request, addr, data); } - return ptrace_request(child, request, addr, data); } #ifdef CONFIG_COMPAT diff --git a/arch/s390/kernel/sclp.S b/arch/s390/kernel/sclp.S index 20639dfe0c42..e27ca63076d1 100644 --- a/arch/s390/kernel/sclp.S +++ b/arch/s390/kernel/sclp.S @@ -24,8 +24,6 @@ LC_EXT_INT_CODE = 0x86 # addr of ext int code # R3 = external interruption parameter if R2=0 # -.section ".init.text","ax" - _sclp_wait_int: stm %r6,%r15,24(%r15) # save registers basr %r13,0 # get base register @@ -318,9 +316,8 @@ _sclp_print_early: .long _sclp_work_area .Lascebc: .long _ascebc -.previous -.section ".init.data","a" +.section .data,"aw",@progbits .balign 4096 _sclp_work_area: .fill 4096 diff --git a/arch/s390/kernel/smp.c b/arch/s390/kernel/smp.c index 56c16876b919..b4b6396e6cf0 100644 --- a/arch/s390/kernel/smp.c +++ b/arch/s390/kernel/smp.c @@ -475,10 +475,8 @@ static int __cpuinit smp_alloc_lowcore(int cpu) { unsigned long async_stack, panic_stack; struct _lowcore *lowcore; - int lc_order; - lc_order = sizeof(long) == 8 ? 1 : 0; - lowcore = (void *) __get_free_pages(GFP_KERNEL | GFP_DMA, lc_order); + lowcore = (void *) __get_free_pages(GFP_KERNEL | GFP_DMA, LC_ORDER); if (!lowcore) return -ENOMEM; async_stack = __get_free_pages(GFP_KERNEL, ASYNC_ORDER); @@ -509,16 +507,14 @@ static int __cpuinit smp_alloc_lowcore(int cpu) out: free_page(panic_stack); free_pages(async_stack, ASYNC_ORDER); - free_pages((unsigned long) lowcore, lc_order); + free_pages((unsigned long) lowcore, LC_ORDER); return -ENOMEM; } static void smp_free_lowcore(int cpu) { struct _lowcore *lowcore; - int lc_order; - lc_order = sizeof(long) == 8 ? 1 : 0; lowcore = lowcore_ptr[cpu]; #ifndef CONFIG_64BIT if (MACHINE_HAS_IEEE) @@ -528,7 +524,7 @@ static void smp_free_lowcore(int cpu) #endif free_page(lowcore->panic_stack - PAGE_SIZE); free_pages(lowcore->async_stack - ASYNC_SIZE, ASYNC_ORDER); - free_pages((unsigned long) lowcore, lc_order); + free_pages((unsigned long) lowcore, LC_ORDER); lowcore_ptr[cpu] = NULL; } @@ -664,7 +660,6 @@ void __init smp_prepare_cpus(unsigned int max_cpus) unsigned long async_stack, panic_stack; struct _lowcore *lowcore; unsigned int cpu; - int lc_order; smp_detect_cpus(); @@ -674,8 +669,7 @@ void __init smp_prepare_cpus(unsigned int max_cpus) print_cpu_info(); /* Reallocate current lowcore, but keep its contents. */ - lc_order = sizeof(long) == 8 ? 1 : 0; - lowcore = (void *) __get_free_pages(GFP_KERNEL | GFP_DMA, lc_order); + lowcore = (void *) __get_free_pages(GFP_KERNEL | GFP_DMA, LC_ORDER); panic_stack = __get_free_page(GFP_KERNEL); async_stack = __get_free_pages(GFP_KERNEL, ASYNC_ORDER); BUG_ON(!lowcore || !panic_stack || !async_stack); @@ -1047,42 +1041,6 @@ out: static SYSDEV_CLASS_ATTR(dispatching, 0644, dispatching_show, dispatching_store); -/* - * If the resume kernel runs on another cpu than the suspended kernel, - * we have to switch the cpu IDs in the logical map. - */ -void smp_switch_boot_cpu_in_resume(u32 resume_phys_cpu_id, - struct _lowcore *suspend_lowcore) -{ - int cpu, suspend_cpu_id, resume_cpu_id; - u32 suspend_phys_cpu_id; - - suspend_phys_cpu_id = __cpu_logical_map[suspend_lowcore->cpu_nr]; - suspend_cpu_id = suspend_lowcore->cpu_nr; - - for_each_present_cpu(cpu) { - if (__cpu_logical_map[cpu] == resume_phys_cpu_id) { - resume_cpu_id = cpu; - goto found; - } - } - panic("Could not find resume cpu in logical map.\n"); - -found: - printk("Resume cpu ID: %i/%i\n", resume_phys_cpu_id, resume_cpu_id); - printk("Suspend cpu ID: %i/%i\n", suspend_phys_cpu_id, suspend_cpu_id); - - __cpu_logical_map[resume_cpu_id] = suspend_phys_cpu_id; - __cpu_logical_map[suspend_cpu_id] = resume_phys_cpu_id; - - lowcore_ptr[suspend_cpu_id]->cpu_addr = resume_phys_cpu_id; -} - -u32 smp_get_phys_cpu_id(void) -{ - return __cpu_logical_map[smp_processor_id()]; -} - static int __init topology_init(void) { int cpu; diff --git a/arch/s390/kernel/suspend.c b/arch/s390/kernel/suspend.c index 086bee970cae..cf9e5c6d5527 100644 --- a/arch/s390/kernel/suspend.c +++ b/arch/s390/kernel/suspend.c @@ -6,36 +6,26 @@ * Author(s): Hans-Joachim Picht <hans@linux.vnet.ibm.com> */ -#include <linux/suspend.h> -#include <linux/reboot.h> #include <linux/pfn.h> -#include <linux/mm.h> -#include <asm/sections.h> #include <asm/system.h> -#include <asm/ipl.h> /* * References to section boundaries */ extern const void __nosave_begin, __nosave_end; -/* - * check if given pfn is in the 'nosave' or in the read only NSS section - */ int pfn_is_nosave(unsigned long pfn) { - unsigned long nosave_begin_pfn = __pa(&__nosave_begin) >> PAGE_SHIFT; - unsigned long nosave_end_pfn = PAGE_ALIGN(__pa(&__nosave_end)) - >> PAGE_SHIFT; - unsigned long eshared_pfn = PFN_DOWN(__pa(&_eshared)) - 1; - unsigned long stext_pfn = PFN_DOWN(__pa(&_stext)); + unsigned long nosave_begin_pfn = PFN_DOWN(__pa(&__nosave_begin)); + unsigned long nosave_end_pfn = PFN_DOWN(__pa(&__nosave_end)); + /* Always save lowcore pages (LC protection might be enabled). */ + if (pfn <= LC_PAGES) + return 0; if (pfn >= nosave_begin_pfn && pfn < nosave_end_pfn) return 1; - if (pfn >= stext_pfn && pfn <= eshared_pfn) { - if (ipl_info.type == IPL_TYPE_NSS) - return 1; - } else if ((tprot(pfn * PAGE_SIZE) && pfn > 0)) + /* Skip memory holes and read-only pages (NSS, DCSS, ...). */ + if (tprot(PFN_PHYS(pfn))) return 1; return 0; } diff --git a/arch/s390/kernel/swsusp_asm64.S b/arch/s390/kernel/swsusp_asm64.S index 7cd6b096f0d1..fe927d0bc20b 100644 --- a/arch/s390/kernel/swsusp_asm64.S +++ b/arch/s390/kernel/swsusp_asm64.S @@ -9,6 +9,7 @@ #include <asm/page.h> #include <asm/ptrace.h> +#include <asm/thread_info.h> #include <asm/asm-offsets.h> /* @@ -41,6 +42,9 @@ swsusp_arch_suspend: /* Get pointer to save area */ lghi %r1,0x1000 + /* Save CPU address */ + stap __LC_CPU_ADDRESS(%r1) + /* Store registers */ mvc 0x318(4,%r1),__SF_EMPTY(%r15) /* move prefix to lowcore */ stfpc 0x31c(%r1) /* store fpu control */ @@ -102,11 +106,10 @@ swsusp_arch_resume: aghi %r15,-STACK_FRAME_OVERHEAD stg %r1,__SF_BACKCHAIN(%r15) -#ifdef CONFIG_SMP - /* Save boot cpu number */ - brasl %r14,smp_get_phys_cpu_id - lgr %r10,%r2 -#endif + /* Make all free pages stable */ + lghi %r2,1 + brasl %r14,arch_set_page_states + /* Deactivate DAT */ stnsm __SF_EMPTY(%r15),0xfb @@ -133,6 +136,69 @@ swsusp_arch_resume: 2: ptlb /* flush tlb */ + /* Reset System */ + larl %r1,restart_entry + larl %r2,.Lrestart_diag308_psw + og %r1,0(%r2) + stg %r1,0(%r0) + larl %r1,.Lnew_pgm_check_psw + epsw %r2,%r3 + stm %r2,%r3,0(%r1) + mvc __LC_PGM_NEW_PSW(16,%r0),0(%r1) + lghi %r0,0 + diag %r0,%r0,0x308 +restart_entry: + lhi %r1,1 + sigp %r1,%r0,0x12 + sam64 + larl %r1,.Lnew_pgm_check_psw + lpswe 0(%r1) +pgm_check_entry: + + /* Switch to original suspend CPU */ + larl %r1,.Lresume_cpu /* Resume CPU address: r2 */ + stap 0(%r1) + llgh %r2,0(%r1) + lghi %r3,0x1000 + llgh %r1,__LC_CPU_ADDRESS(%r3) /* Suspend CPU address: r1 */ + cgr %r1,%r2 + je restore_registers /* r1 = r2 -> nothing to do */ + larl %r4,.Lrestart_suspend_psw /* Set new restart PSW */ + mvc __LC_RESTART_PSW(16,%r0),0(%r4) +3: + sigp %r9,%r1,__SIGP_INITIAL_CPU_RESET + brc 8,4f /* accepted */ + brc 2,3b /* busy, try again */ + + /* Suspend CPU not available -> panic */ + larl %r15,init_thread_union + ahi %r15,1<<(PAGE_SHIFT+THREAD_ORDER) + larl %r2,.Lpanic_string + larl %r3,_sclp_print_early + lghi %r1,0 + sam31 + sigp %r1,%r0,0x12 + basr %r14,%r3 + larl %r3,.Ldisabled_wait_31 + lpsw 0(%r3) +4: + /* Switch to suspend CPU */ + sigp %r9,%r1,__SIGP_RESTART /* start suspend CPU */ + brc 2,4b /* busy, try again */ +5: + sigp %r9,%r2,__SIGP_STOP /* stop resume (current) CPU */ +6: j 6b + +restart_suspend: + larl %r1,.Lresume_cpu + llgh %r2,0(%r1) +7: + sigp %r9,%r2,__SIGP_SENSE /* Wait for resume CPU */ + brc 2,7b /* busy, try again */ + tmll %r9,0x40 /* Test if resume CPU is stopped */ + jz 7b + +restore_registers: /* Restore registers */ lghi %r13,0x1000 /* %r1 = pointer to save arae */ @@ -166,19 +232,33 @@ swsusp_arch_resume: /* Pointer to save area */ lghi %r13,0x1000 -#ifdef CONFIG_SMP - /* Switch CPUs */ - lgr %r2,%r10 /* get cpu id */ - llgf %r3,0x318(%r13) - brasl %r14,smp_switch_boot_cpu_in_resume -#endif /* Restore prefix register */ spx 0x318(%r13) /* Activate DAT */ stosm __SF_EMPTY(%r15),0x04 + /* Make all free pages unstable */ + lghi %r2,0 + brasl %r14,arch_set_page_states + /* Return 0 */ lmg %r6,%r15,STACK_FRAME_OVERHEAD + __SF_GPRS(%r15) lghi %r2,0 br %r14 + + .section .data.nosave,"aw",@progbits + .align 8 +.Ldisabled_wait_31: + .long 0x000a0000,0x00000000 +.Lpanic_string: + .asciz "Resume not possible because suspend CPU is no longer available" + .align 8 +.Lrestart_diag308_psw: + .long 0x00080000,0x80000000 +.Lrestart_suspend_psw: + .quad 0x0000000180000000,restart_suspend +.Lnew_pgm_check_psw: + .quad 0,pgm_check_entry +.Lresume_cpu: + .byte 0,0 diff --git a/arch/s390/kernel/syscalls.S b/arch/s390/kernel/syscalls.S index 0b5083681e77..30eca070d426 100644 --- a/arch/s390/kernel/syscalls.S +++ b/arch/s390/kernel/syscalls.S @@ -19,7 +19,7 @@ SYSCALL(sys_restart_syscall,sys_restart_syscall,sys_restart_syscall) SYSCALL(sys_creat,sys_creat,sys32_creat_wrapper) SYSCALL(sys_link,sys_link,sys32_link_wrapper) SYSCALL(sys_unlink,sys_unlink,sys32_unlink_wrapper) /* 10 */ -SYSCALL(sys_execve,sys_execve,sys32_execve) +SYSCALL(sys_execve,sys_execve,sys32_execve_wrapper) SYSCALL(sys_chdir,sys_chdir,sys32_chdir_wrapper) SYSCALL(sys_time,sys_ni_syscall,sys32_time_wrapper) /* old time syscall */ SYSCALL(sys_mknod,sys_mknod,sys32_mknod_wrapper) @@ -128,7 +128,7 @@ SYSCALL(sys_sysinfo,sys_sysinfo,compat_sys_sysinfo_wrapper) SYSCALL(sys_ipc,sys_ipc,sys32_ipc_wrapper) SYSCALL(sys_fsync,sys_fsync,sys32_fsync_wrapper) SYSCALL(sys_sigreturn,sys_sigreturn,sys32_sigreturn) -SYSCALL(sys_clone,sys_clone,sys32_clone) /* 120 */ +SYSCALL(sys_clone,sys_clone,sys_clone_wrapper) /* 120 */ SYSCALL(sys_setdomainname,sys_setdomainname,sys32_setdomainname_wrapper) SYSCALL(sys_newuname,sys_s390_newuname,sys32_newuname_wrapper) NI_SYSCALL /* modify_ldt for i386 */ @@ -136,8 +136,8 @@ SYSCALL(sys_adjtimex,sys_adjtimex,compat_sys_adjtimex_wrapper) SYSCALL(sys_mprotect,sys_mprotect,sys32_mprotect_wrapper) /* 125 */ SYSCALL(sys_sigprocmask,sys_sigprocmask,compat_sys_sigprocmask_wrapper) NI_SYSCALL /* old "create module" */ -SYSCALL(sys_init_module,sys_init_module,sys32_init_module_wrapper) -SYSCALL(sys_delete_module,sys_delete_module,sys32_delete_module_wrapper) +SYSCALL(sys_init_module,sys_init_module,sys_init_module_wrapper) +SYSCALL(sys_delete_module,sys_delete_module,sys_delete_module_wrapper) NI_SYSCALL /* 130: old get_kernel_syms */ SYSCALL(sys_quotactl,sys_quotactl,sys32_quotactl_wrapper) SYSCALL(sys_getpgid,sys_getpgid,sys32_getpgid_wrapper) diff --git a/arch/s390/mm/page-states.c b/arch/s390/mm/page-states.c index f92ec203ad92..098923ae458f 100644 --- a/arch/s390/mm/page-states.c +++ b/arch/s390/mm/page-states.c @@ -50,28 +50,64 @@ void __init cmma_init(void) cmma_flag = 0; } -void arch_free_page(struct page *page, int order) +static inline void set_page_unstable(struct page *page, int order) { int i, rc; - if (!cmma_flag) - return; for (i = 0; i < (1 << order); i++) asm volatile(".insn rrf,0xb9ab0000,%0,%1,%2,0" : "=&d" (rc) - : "a" ((page_to_pfn(page) + i) << PAGE_SHIFT), + : "a" (page_to_phys(page + i)), "i" (ESSA_SET_UNUSED)); } -void arch_alloc_page(struct page *page, int order) +void arch_free_page(struct page *page, int order) { - int i, rc; - if (!cmma_flag) return; + set_page_unstable(page, order); +} + +static inline void set_page_stable(struct page *page, int order) +{ + int i, rc; + for (i = 0; i < (1 << order); i++) asm volatile(".insn rrf,0xb9ab0000,%0,%1,%2,0" : "=&d" (rc) - : "a" ((page_to_pfn(page) + i) << PAGE_SHIFT), + : "a" (page_to_phys(page + i)), "i" (ESSA_SET_STABLE)); } + +void arch_alloc_page(struct page *page, int order) +{ + if (!cmma_flag) + return; + set_page_stable(page, order); +} + +void arch_set_page_states(int make_stable) +{ + unsigned long flags, order, t; + struct list_head *l; + struct page *page; + struct zone *zone; + + if (!cmma_flag) + return; + if (make_stable) + drain_local_pages(NULL); + for_each_populated_zone(zone) { + spin_lock_irqsave(&zone->lock, flags); + for_each_migratetype_order(order, t) { + list_for_each(l, &zone->free_area[order].free_list[t]) { + page = list_entry(l, struct page, lru); + if (make_stable) + set_page_stable(page, order); + else + set_page_unstable(page, order); + } + } + spin_unlock_irqrestore(&zone->lock, flags); + } +} diff --git a/arch/s390/mm/pgtable.c b/arch/s390/mm/pgtable.c index c70215247071..c60bfb309ce6 100644 --- a/arch/s390/mm/pgtable.c +++ b/arch/s390/mm/pgtable.c @@ -314,21 +314,18 @@ int s390_enable_sie(void) } EXPORT_SYMBOL_GPL(s390_enable_sie); -#ifdef CONFIG_DEBUG_PAGEALLOC -#ifdef CONFIG_HIBERNATION +#if defined(CONFIG_DEBUG_PAGEALLOC) && defined(CONFIG_HIBERNATION) bool kernel_page_present(struct page *page) { unsigned long addr; int cc; addr = page_to_phys(page); - asm("lra %1,0(%1)\n" - "ipm %0\n" - "srl %0,28" - :"=d"(cc),"+a"(addr)::"cc"); + asm volatile( + " lra %1,0(%1)\n" + " ipm %0\n" + " srl %0,28" + : "=d" (cc), "+a" (addr) : : "cc"); return cc == 0; } - -#endif /* CONFIG_HIBERNATION */ -#endif /* CONFIG_DEBUG_PAGEALLOC */ - +#endif /* CONFIG_HIBERNATION && CONFIG_DEBUG_PAGEALLOC */ diff --git a/drivers/s390/block/dasd_eckd.c b/drivers/s390/block/dasd_eckd.c index bd9fe2e36dce..ab3521755588 100644 --- a/drivers/s390/block/dasd_eckd.c +++ b/drivers/s390/block/dasd_eckd.c @@ -935,6 +935,7 @@ static int dasd_eckd_read_features(struct dasd_device *device) struct dasd_eckd_private *private; private = (struct dasd_eckd_private *) device->private; + memset(&private->features, 0, sizeof(struct dasd_rssd_features)); cqr = dasd_smalloc_request(DASD_ECKD_MAGIC, 1 /* PSF */ + 1 /* RSSD */, (sizeof(struct dasd_psf_prssd_data) + sizeof(struct dasd_rssd_features)), @@ -982,7 +983,9 @@ static int dasd_eckd_read_features(struct dasd_device *device) features = (struct dasd_rssd_features *) (prssdp + 1); memcpy(&private->features, features, sizeof(struct dasd_rssd_features)); - } + } else + dev_warn(&device->cdev->dev, "Reading device feature codes" + " failed with rc=%d\n", rc); dasd_sfree_request(cqr, cqr->memdev); return rc; } @@ -1144,9 +1147,7 @@ dasd_eckd_check_characteristics(struct dasd_device *device) } /* Read Feature Codes */ - rc = dasd_eckd_read_features(device); - if (rc) - goto out_err3; + dasd_eckd_read_features(device); /* Read Device Characteristics */ rc = dasd_generic_read_dev_chars(device, DASD_ECKD_MAGIC, @@ -3241,9 +3242,7 @@ int dasd_eckd_restore_device(struct dasd_device *device) } /* Read Feature Codes */ - rc = dasd_eckd_read_features(device); - if (rc) - goto out_err; + dasd_eckd_read_features(device); /* Read Device Characteristics */ memset(&private->rdc_data, 0, sizeof(private->rdc_data)); diff --git a/drivers/s390/cio/css.c b/drivers/s390/cio/css.c index 393c73c47f87..91c25706fa83 100644 --- a/drivers/s390/cio/css.c +++ b/drivers/s390/cio/css.c @@ -31,8 +31,7 @@ #include "chp.h" int css_init_done = 0; -static int need_reprobe = 0; -static int max_ssid = 0; +int max_ssid; struct channel_subsystem *channel_subsystems[__MAX_CSSID + 1]; @@ -315,12 +314,18 @@ int css_probe_device(struct subchannel_id schid) int ret; struct subchannel *sch; - sch = css_alloc_subchannel(schid); - if (IS_ERR(sch)) - return PTR_ERR(sch); + if (cio_is_console(schid)) + sch = cio_get_console_subchannel(); + else { + sch = css_alloc_subchannel(schid); + if (IS_ERR(sch)) + return PTR_ERR(sch); + } ret = css_register_subchannel(sch); - if (ret) - put_device(&sch->dev); + if (ret) { + if (!cio_is_console(schid)) + put_device(&sch->dev); + } return ret; } @@ -409,10 +414,14 @@ static void css_evaluate_subchannel(struct subchannel_id schid, int slow) static struct idset *slow_subchannel_set; static spinlock_t slow_subchannel_lock; +static wait_queue_head_t css_eval_wq; +static atomic_t css_eval_scheduled; static int __init slow_subchannel_init(void) { spin_lock_init(&slow_subchannel_lock); + atomic_set(&css_eval_scheduled, 0); + init_waitqueue_head(&css_eval_wq); slow_subchannel_set = idset_sch_new(); if (!slow_subchannel_set) { CIO_MSG_EVENT(0, "could not allocate slow subchannel set\n"); @@ -468,9 +477,17 @@ static int slow_eval_unknown_fn(struct subchannel_id schid, void *data) static void css_slow_path_func(struct work_struct *unused) { + unsigned long flags; + CIO_TRACE_EVENT(4, "slowpath"); for_each_subchannel_staged(slow_eval_known_fn, slow_eval_unknown_fn, NULL); + spin_lock_irqsave(&slow_subchannel_lock, flags); + if (idset_is_empty(slow_subchannel_set)) { + atomic_set(&css_eval_scheduled, 0); + wake_up(&css_eval_wq); + } + spin_unlock_irqrestore(&slow_subchannel_lock, flags); } static DECLARE_WORK(slow_path_work, css_slow_path_func); @@ -482,6 +499,7 @@ void css_schedule_eval(struct subchannel_id schid) spin_lock_irqsave(&slow_subchannel_lock, flags); idset_sch_add(slow_subchannel_set, schid); + atomic_set(&css_eval_scheduled, 1); queue_work(slow_path_wq, &slow_path_work); spin_unlock_irqrestore(&slow_subchannel_lock, flags); } @@ -492,80 +510,53 @@ void css_schedule_eval_all(void) spin_lock_irqsave(&slow_subchannel_lock, flags); idset_fill(slow_subchannel_set); + atomic_set(&css_eval_scheduled, 1); queue_work(slow_path_wq, &slow_path_work); spin_unlock_irqrestore(&slow_subchannel_lock, flags); } -void css_wait_for_slow_path(void) +static int __unset_registered(struct device *dev, void *data) { - flush_workqueue(slow_path_wq); -} - -/* Reprobe subchannel if unregistered. */ -static int reprobe_subchannel(struct subchannel_id schid, void *data) -{ - int ret; - - CIO_MSG_EVENT(6, "cio: reprobe 0.%x.%04x\n", - schid.ssid, schid.sch_no); - if (need_reprobe) - return -EAGAIN; - - ret = css_probe_device(schid); - switch (ret) { - case 0: - break; - case -ENXIO: - case -ENOMEM: - case -EIO: - /* These should abort looping */ - break; - default: - ret = 0; - } - - return ret; -} + struct idset *set = data; + struct subchannel *sch = to_subchannel(dev); -static void reprobe_after_idle(struct work_struct *unused) -{ - /* Make sure initial subchannel scan is done. */ - wait_event(ccw_device_init_wq, - atomic_read(&ccw_device_init_count) == 0); - if (need_reprobe) - css_schedule_reprobe(); + idset_sch_del(set, sch->schid); + return 0; } -static DECLARE_WORK(reprobe_idle_work, reprobe_after_idle); - -/* Work function used to reprobe all unregistered subchannels. */ -static void reprobe_all(struct work_struct *unused) +void css_schedule_eval_all_unreg(void) { - int ret; - - CIO_MSG_EVENT(4, "reprobe start\n"); + unsigned long flags; + struct idset *unreg_set; - /* Make sure initial subchannel scan is done. */ - if (atomic_read(&ccw_device_init_count) != 0) { - queue_work(ccw_device_work, &reprobe_idle_work); + /* Find unregistered subchannels. */ + unreg_set = idset_sch_new(); + if (!unreg_set) { + /* Fallback. */ + css_schedule_eval_all(); return; } - need_reprobe = 0; - ret = for_each_subchannel_staged(NULL, reprobe_subchannel, NULL); - - CIO_MSG_EVENT(4, "reprobe done (rc=%d, need_reprobe=%d)\n", ret, - need_reprobe); + idset_fill(unreg_set); + bus_for_each_dev(&css_bus_type, NULL, unreg_set, __unset_registered); + /* Apply to slow_subchannel_set. */ + spin_lock_irqsave(&slow_subchannel_lock, flags); + idset_add_set(slow_subchannel_set, unreg_set); + atomic_set(&css_eval_scheduled, 1); + queue_work(slow_path_wq, &slow_path_work); + spin_unlock_irqrestore(&slow_subchannel_lock, flags); + idset_free(unreg_set); } -static DECLARE_WORK(css_reprobe_work, reprobe_all); +void css_wait_for_slow_path(void) +{ + flush_workqueue(slow_path_wq); +} /* Schedule reprobing of all unregistered subchannels. */ void css_schedule_reprobe(void) { - need_reprobe = 1; - queue_work(slow_path_wq, &css_reprobe_work); + css_schedule_eval_all_unreg(); } - EXPORT_SYMBOL_GPL(css_schedule_reprobe); /* @@ -601,49 +592,6 @@ static void css_process_crw(struct crw *crw0, struct crw *crw1, int overflow) css_evaluate_subchannel(mchk_schid, 0); } -static int __init -__init_channel_subsystem(struct subchannel_id schid, void *data) -{ - struct subchannel *sch; - int ret; - - if (cio_is_console(schid)) - sch = cio_get_console_subchannel(); - else { - sch = css_alloc_subchannel(schid); - if (IS_ERR(sch)) - ret = PTR_ERR(sch); - else - ret = 0; - switch (ret) { - case 0: - break; - case -ENOMEM: - panic("Out of memory in init_channel_subsystem\n"); - /* -ENXIO: no more subchannels. */ - case -ENXIO: - return ret; - /* -EIO: this subchannel set not supported. */ - case -EIO: - return ret; - default: - return 0; - } - } - /* - * We register ALL valid subchannels in ioinfo, even those - * that have been present before init_channel_subsystem. - * These subchannels can't have been registered yet (kmalloc - * not working) so we do it now. This is true e.g. for the - * console subchannel. - */ - if (css_register_subchannel(sch)) { - if (!cio_is_console(schid)) - put_device(&sch->dev); - } - return 0; -} - static void __init css_generate_pgid(struct channel_subsystem *css, u32 tod_high) { @@ -854,19 +802,30 @@ static struct notifier_block css_power_notifier = { * The struct subchannel's are created during probing (except for the * static console subchannel). */ -static int __init -init_channel_subsystem (void) +static int __init css_bus_init(void) { int ret, i; ret = chsc_determine_css_characteristics(); if (ret == -ENOMEM) - goto out; /* No need to continue. */ + goto out; ret = chsc_alloc_sei_area(); if (ret) goto out; + /* Try to enable MSS. */ + ret = chsc_enable_facility(CHSC_SDA_OC_MSS); + switch (ret) { + case 0: /* Success. */ + max_ssid = __MAX_SSID; + break; + case -ENOMEM: + goto out; + default: + max_ssid = 0; + } + ret = slow_subchannel_init(); if (ret) goto out; @@ -878,17 +837,6 @@ init_channel_subsystem (void) if ((ret = bus_register(&css_bus_type))) goto out; - /* Try to enable MSS. */ - ret = chsc_enable_facility(CHSC_SDA_OC_MSS); - switch (ret) { - case 0: /* Success. */ - max_ssid = __MAX_SSID; - break; - case -ENOMEM: - goto out_bus; - default: - max_ssid = 0; - } /* Setup css structure. */ for (i = 0; i <= __MAX_CSSID; i++) { struct channel_subsystem *css; @@ -934,7 +882,6 @@ init_channel_subsystem (void) /* Enable default isc for I/O subchannels. */ isc_register(IO_SCH_ISC); - for_each_subchannel(__init_channel_subsystem, NULL); return 0; out_file: if (css_chsc_characteristics.secm) @@ -955,17 +902,76 @@ out_unregister: &dev_attr_cm_enable); device_unregister(&css->device); } -out_bus: bus_unregister(&css_bus_type); out: crw_unregister_handler(CRW_RSC_CSS); chsc_free_sei_area(); - kfree(slow_subchannel_set); + idset_free(slow_subchannel_set); pr_alert("The CSS device driver initialization failed with " "errno=%d\n", ret); return ret; } +static void __init css_bus_cleanup(void) +{ + struct channel_subsystem *css; + int i; + + for (i = 0; i <= __MAX_CSSID; i++) { + css = channel_subsystems[i]; + device_unregister(&css->pseudo_subchannel->dev); + css->pseudo_subchannel = NULL; + if (css_chsc_characteristics.secm) + device_remove_file(&css->device, &dev_attr_cm_enable); + device_unregister(&css->device); + } + bus_unregister(&css_bus_type); + crw_unregister_handler(CRW_RSC_CSS); + chsc_free_sei_area(); + idset_free(slow_subchannel_set); + isc_unregister(IO_SCH_ISC); +} + +static int __init channel_subsystem_init(void) +{ + int ret; + + ret = css_bus_init(); + if (ret) + return ret; + + ret = io_subchannel_init(); + if (ret) + css_bus_cleanup(); + + return ret; +} +subsys_initcall(channel_subsystem_init); + +static int css_settle(struct device_driver *drv, void *unused) +{ + struct css_driver *cssdrv = to_cssdriver(drv); + + if (cssdrv->settle) + cssdrv->settle(); + return 0; +} + +/* + * Wait for the initialization of devices to finish, to make sure we are + * done with our setup if the search for the root device starts. + */ +static int __init channel_subsystem_init_sync(void) +{ + /* Start initial subchannel evaluation. */ + css_schedule_eval_all(); + /* Wait for the evaluation of subchannels to finish. */ + wait_event(css_eval_wq, atomic_read(&css_eval_scheduled) == 0); + /* Wait for the subchannel type specific initialization to finish */ + return bus_for_each_drv(&css_bus_type, NULL, NULL, css_settle); +} +subsys_initcall_sync(channel_subsystem_init_sync); + int sch_is_pseudo_sch(struct subchannel *sch) { return sch == to_css(sch->dev.parent)->pseudo_subchannel; @@ -1135,7 +1141,5 @@ void css_driver_unregister(struct css_driver *cdrv) } EXPORT_SYMBOL_GPL(css_driver_unregister); -subsys_initcall(init_channel_subsystem); - MODULE_LICENSE("GPL"); EXPORT_SYMBOL(css_bus_type); diff --git a/drivers/s390/cio/css.h b/drivers/s390/cio/css.h index 9763eeec7458..68d6b0bf151c 100644 --- a/drivers/s390/cio/css.h +++ b/drivers/s390/cio/css.h @@ -75,6 +75,7 @@ struct chp_link; * @freeze: callback for freezing during hibernation snapshotting * @thaw: undo work done in @freeze * @restore: callback for restoring after hibernation + * @settle: wait for asynchronous work to finish * @name: name of the device driver */ struct css_driver { @@ -92,6 +93,7 @@ struct css_driver { int (*freeze)(struct subchannel *); int (*thaw) (struct subchannel *); int (*restore)(struct subchannel *); + void (*settle)(void); const char *name; }; @@ -109,6 +111,7 @@ extern void css_sch_device_unregister(struct subchannel *); extern int css_probe_device(struct subchannel_id); extern struct subchannel *get_subchannel_by_schid(struct subchannel_id); extern int css_init_done; +extern int max_ssid; int for_each_subchannel_staged(int (*fn_known)(struct subchannel *, void *), int (*fn_unknown)(struct subchannel_id, void *), void *data); diff --git a/drivers/s390/cio/device.c b/drivers/s390/cio/device.c index 6527f3f34493..f780bdd3a04e 100644 --- a/drivers/s390/cio/device.c +++ b/drivers/s390/cio/device.c @@ -131,6 +131,10 @@ static void io_subchannel_shutdown(struct subchannel *); static int io_subchannel_sch_event(struct subchannel *, int); static int io_subchannel_chp_event(struct subchannel *, struct chp_link *, int); +static void recovery_func(unsigned long data); +struct workqueue_struct *ccw_device_work; +wait_queue_head_t ccw_device_init_wq; +atomic_t ccw_device_init_count; static struct css_device_id io_subchannel_ids[] = { { .match_flags = 0x1, .type = SUBCHANNEL_TYPE_IO, }, @@ -151,6 +155,13 @@ static int io_subchannel_prepare(struct subchannel *sch) return 0; } +static void io_subchannel_settle(void) +{ + wait_event(ccw_device_init_wq, + atomic_read(&ccw_device_init_count) == 0); + flush_workqueue(ccw_device_work); +} + static struct css_driver io_subchannel_driver = { .owner = THIS_MODULE, .subchannel_type = io_subchannel_ids, @@ -162,16 +173,10 @@ static struct css_driver io_subchannel_driver = { .remove = io_subchannel_remove, .shutdown = io_subchannel_shutdown, .prepare = io_subchannel_prepare, + .settle = io_subchannel_settle, }; -struct workqueue_struct *ccw_device_work; -wait_queue_head_t ccw_device_init_wq; -atomic_t ccw_device_init_count; - -static void recovery_func(unsigned long data); - -static int __init -init_ccw_bus_type (void) +int __init io_subchannel_init(void) { int ret; @@ -181,10 +186,10 @@ init_ccw_bus_type (void) ccw_device_work = create_singlethread_workqueue("cio"); if (!ccw_device_work) - return -ENOMEM; /* FIXME: better errno ? */ + return -ENOMEM; slow_path_wq = create_singlethread_workqueue("kslowcrw"); if (!slow_path_wq) { - ret = -ENOMEM; /* FIXME: better errno ? */ + ret = -ENOMEM; goto out_err; } if ((ret = bus_register (&ccw_bus_type))) @@ -194,9 +199,6 @@ init_ccw_bus_type (void) if (ret) goto out_err; - wait_event(ccw_device_init_wq, - atomic_read(&ccw_device_init_count) == 0); - flush_workqueue(ccw_device_work); return 0; out_err: if (ccw_device_work) @@ -206,16 +208,6 @@ out_err: return ret; } -static void __exit -cleanup_ccw_bus_type (void) -{ - css_driver_unregister(&io_subchannel_driver); - bus_unregister(&ccw_bus_type); - destroy_workqueue(ccw_device_work); -} - -subsys_initcall(init_ccw_bus_type); -module_exit(cleanup_ccw_bus_type); /************************ device handling **************************/ diff --git a/drivers/s390/cio/device.h b/drivers/s390/cio/device.h index e3975107a578..ed39a2caaf47 100644 --- a/drivers/s390/cio/device.h +++ b/drivers/s390/cio/device.h @@ -74,6 +74,7 @@ dev_fsm_final_state(struct ccw_device *cdev) extern struct workqueue_struct *ccw_device_work; extern wait_queue_head_t ccw_device_init_wq; extern atomic_t ccw_device_init_count; +int __init io_subchannel_init(void); void io_subchannel_recog_done(struct ccw_device *cdev); void io_subchannel_init_config(struct subchannel *sch); diff --git a/drivers/s390/cio/idset.c b/drivers/s390/cio/idset.c index cf8f24a4b5eb..4d10981c7cc1 100644 --- a/drivers/s390/cio/idset.c +++ b/drivers/s390/cio/idset.c @@ -78,7 +78,7 @@ static inline int idset_get_first(struct idset *set, int *ssid, int *id) struct idset *idset_sch_new(void) { - return idset_new(__MAX_SSID + 1, __MAX_SUBCHANNEL + 1); + return idset_new(max_ssid + 1, __MAX_SUBCHANNEL + 1); } void idset_sch_add(struct idset *set, struct subchannel_id schid) @@ -110,3 +110,23 @@ int idset_sch_get_first(struct idset *set, struct subchannel_id *schid) } return rc; } + +int idset_is_empty(struct idset *set) +{ + int bitnum; + + bitnum = find_first_bit(set->bitmap, set->num_ssid * set->num_id); + if (bitnum >= set->num_ssid * set->num_id) + return 1; + return 0; +} + +void idset_add_set(struct idset *to, struct idset *from) +{ + unsigned long i, len; + + len = min(__BITOPS_WORDS(to->num_ssid * to->num_id), + __BITOPS_WORDS(from->num_ssid * from->num_id)); + for (i = 0; i < len ; i++) + to->bitmap[i] |= from->bitmap[i]; +} diff --git a/drivers/s390/cio/idset.h b/drivers/s390/cio/idset.h index 528065cb5021..7543da4529f9 100644 --- a/drivers/s390/cio/idset.h +++ b/drivers/s390/cio/idset.h @@ -21,5 +21,7 @@ void idset_sch_add(struct idset *set, struct subchannel_id id); void idset_sch_del(struct idset *set, struct subchannel_id id); int idset_sch_contains(struct idset *set, struct subchannel_id id); int idset_sch_get_first(struct idset *set, struct subchannel_id *id); +int idset_is_empty(struct idset *set); +void idset_add_set(struct idset *to, struct idset *from); #endif /* S390_IDSET_H */ diff --git a/drivers/s390/cio/qdio_main.c b/drivers/s390/cio/qdio_main.c index 9aef402a5f1b..4be6e84b9599 100644 --- a/drivers/s390/cio/qdio_main.c +++ b/drivers/s390/cio/qdio_main.c @@ -401,7 +401,7 @@ static void announce_buffer_error(struct qdio_q *q, int count) if ((!q->is_input_q && (q->sbal[q->first_to_check]->element[15].flags & 0xff) == 0x10)) { qdio_perf_stat_inc(&perf_stats.outbound_target_full); - DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "OUTFULL FTC:%3d", + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "OUTFULL FTC:%02x", q->first_to_check); return; } @@ -418,7 +418,7 @@ static inline void inbound_primed(struct qdio_q *q, int count) { int new; - DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in prim: %3d", count); + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in prim: %02x", count); /* for QEBSM the ACK was already set by EQBS */ if (is_qebsm(q)) { @@ -455,6 +455,8 @@ static inline void inbound_primed(struct qdio_q *q, int count) count--; if (!count) return; + /* need to change ALL buffers to get more interrupts */ + set_buf_states(q, q->first_to_check, SLSB_P_INPUT_NOT_INIT, count); } static int get_inbound_buffer_frontier(struct qdio_q *q) @@ -545,7 +547,7 @@ static inline int qdio_inbound_q_done(struct qdio_q *q) * has (probably) not moved (see qdio_inbound_processing). */ if (get_usecs() > q->u.in.timestamp + QDIO_INPUT_THRESHOLD) { - DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in done:%3d", + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "in done:%02x", q->first_to_check); return 1; } else @@ -565,11 +567,10 @@ static void qdio_kick_handler(struct qdio_q *q) if (q->is_input_q) { qdio_perf_stat_inc(&perf_stats.inbound_handler); - DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "kih s:%3d c:%3d", start, count); - } else { - DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "koh: nr:%1d", q->nr); - DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "s:%3d c:%3d", start, count); - } + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "kih s:%02x c:%02x", start, count); + } else + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "koh: s:%02x c:%02x", + start, count); q->handler(q->irq_ptr->cdev, q->qdio_error, q->nr, start, count, q->irq_ptr->int_parm); @@ -633,7 +634,7 @@ static int get_outbound_buffer_frontier(struct qdio_q *q) switch (state) { case SLSB_P_OUTPUT_EMPTY: /* the adapter got it */ - DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "out empty:%1d %3d", q->nr, count); + DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "out empty:%1d %02x", q->nr, count); atomic_sub(count, &q->nr_buf_used); q->first_to_check = add_buf(q->first_to_check, count); @@ -1481,10 +1482,9 @@ static int handle_outbound(struct qdio_q *q, unsigned int callflags, get_buf_state(q, prev_buf(bufnr), &state, 0); if (state != SLSB_CU_OUTPUT_PRIMED) rc = qdio_kick_outbound_q(q); - else { - DBF_DEV_EVENT(DBF_INFO, q->irq_ptr, "fast-req"); + else qdio_perf_stat_inc(&perf_stats.fast_requeue); - } + out: tasklet_schedule(&q->tasklet); return rc; @@ -1510,12 +1510,8 @@ int do_QDIO(struct ccw_device *cdev, unsigned int callflags, if (!irq_ptr) return -ENODEV; - if (callflags & QDIO_FLAG_SYNC_INPUT) - DBF_DEV_EVENT(DBF_INFO, irq_ptr, "doQDIO input"); - else - DBF_DEV_EVENT(DBF_INFO, irq_ptr, "doQDIO output"); - DBF_DEV_EVENT(DBF_INFO, irq_ptr, "q:%1d flag:%4x", q_nr, callflags); - DBF_DEV_EVENT(DBF_INFO, irq_ptr, "buf:%2d cnt:%3d", bufnr, count); + DBF_DEV_EVENT(DBF_INFO, irq_ptr, + "do%02x b:%02x c:%02x", callflags, bufnr, count); if (irq_ptr->state != QDIO_IRQ_STATE_ACTIVE) return -EBUSY; diff --git a/drivers/s390/crypto/ap_bus.c b/drivers/s390/crypto/ap_bus.c index 090b32a339c6..1294876bf7b4 100644 --- a/drivers/s390/crypto/ap_bus.c +++ b/drivers/s390/crypto/ap_bus.c @@ -60,6 +60,7 @@ static int ap_device_probe(struct device *dev); static void ap_interrupt_handler(void *unused1, void *unused2); static void ap_reset(struct ap_device *ap_dev); static void ap_config_timeout(unsigned long ptr); +static int ap_select_domain(void); /* * Module description. @@ -109,6 +110,10 @@ static unsigned long long poll_timeout = 250000; /* Suspend flag */ static int ap_suspend_flag; +/* Flag to check if domain was set through module parameter domain=. This is + * important when supsend and resume is done in a z/VM environment where the + * domain might change. */ +static int user_set_domain = 0; static struct bus_type ap_bus_type; /** @@ -643,6 +648,7 @@ static int ap_bus_suspend(struct device *dev, pm_message_t state) destroy_workqueue(ap_work_queue); ap_work_queue = NULL; } + tasklet_disable(&ap_tasklet); } /* Poll on the device until all requests are finished. */ @@ -653,7 +659,10 @@ static int ap_bus_suspend(struct device *dev, pm_message_t state) spin_unlock_bh(&ap_dev->lock); } while ((flags & 1) || (flags & 2)); - ap_device_remove(dev); + spin_lock_bh(&ap_dev->lock); + ap_dev->unregistered = 1; + spin_unlock_bh(&ap_dev->lock); + return 0; } @@ -666,11 +675,10 @@ static int ap_bus_resume(struct device *dev) ap_suspend_flag = 0; if (!ap_interrupts_available()) ap_interrupt_indicator = NULL; - ap_device_probe(dev); - ap_reset(ap_dev); - setup_timer(&ap_dev->timeout, ap_request_timeout, - (unsigned long) ap_dev); - ap_scan_bus(NULL); + if (!user_set_domain) { + ap_domain_index = -1; + ap_select_domain(); + } init_timer(&ap_config_timer); ap_config_timer.function = ap_config_timeout; ap_config_timer.data = 0; @@ -686,12 +694,14 @@ static int ap_bus_resume(struct device *dev) tasklet_schedule(&ap_tasklet); if (ap_thread_flag) rc = ap_poll_thread_start(); - } else { - ap_device_probe(dev); - ap_reset(ap_dev); - setup_timer(&ap_dev->timeout, ap_request_timeout, - (unsigned long) ap_dev); } + if (AP_QID_QUEUE(ap_dev->qid) != ap_domain_index) { + spin_lock_bh(&ap_dev->lock); + ap_dev->qid = AP_MKQID(AP_QID_DEVICE(ap_dev->qid), + ap_domain_index); + spin_unlock_bh(&ap_dev->lock); + } + queue_work(ap_work_queue, &ap_config_work); return rc; } @@ -1079,6 +1089,8 @@ static void ap_scan_bus(struct work_struct *unused) spin_lock_bh(&ap_dev->lock); if (rc || ap_dev->unregistered) { spin_unlock_bh(&ap_dev->lock); + if (ap_dev->unregistered) + i--; device_unregister(dev); put_device(dev); continue; @@ -1586,6 +1598,12 @@ int __init ap_module_init(void) ap_domain_index); return -EINVAL; } + /* In resume callback we need to know if the user had set the domain. + * If so, we can not just reset it. + */ + if (ap_domain_index >= 0) + user_set_domain = 1; + if (ap_instructions_available() != 0) { pr_warning("The hardware system does not support " "AP instructions\n"); |