diff options
Diffstat (limited to 'arch/um')
-rw-r--r-- | arch/um/Kconfig.common | 5 | ||||
-rw-r--r-- | arch/um/defconfig | 1 | ||||
-rw-r--r-- | arch/um/drivers/chan_kern.c | 9 | ||||
-rw-r--r-- | arch/um/drivers/line.c | 2 | ||||
-rw-r--r-- | arch/um/drivers/mconsole_kern.c | 1 | ||||
-rw-r--r-- | arch/um/drivers/net_kern.c | 4 | ||||
-rw-r--r-- | arch/um/drivers/port_kern.c | 2 | ||||
-rw-r--r-- | arch/um/drivers/xterm_kern.c | 2 | ||||
-rw-r--r-- | arch/um/include/asm/pgtable.h | 10 | ||||
-rw-r--r-- | arch/um/include/asm/processor-generic.h | 2 | ||||
-rw-r--r-- | arch/um/include/asm/thread_info.h | 2 | ||||
-rw-r--r-- | arch/um/include/shared/irq_kern.h | 2 | ||||
-rw-r--r-- | arch/um/kernel/Makefile | 2 | ||||
-rw-r--r-- | arch/um/kernel/init_task.c | 38 | ||||
-rw-r--r-- | arch/um/kernel/irq.c | 9 | ||||
-rw-r--r-- | arch/um/kernel/process.c | 10 | ||||
-rw-r--r-- | arch/um/kernel/signal.c | 14 | ||||
-rw-r--r-- | arch/um/kernel/skas/syscall.c | 2 | ||||
-rw-r--r-- | arch/um/kernel/smp.c | 2 | ||||
-rw-r--r-- | arch/um/kernel/tlb.c | 1 | ||||
-rw-r--r-- | arch/um/kernel/um_arch.c | 5 | ||||
-rw-r--r-- | arch/um/os-Linux/skas/mem.c | 10 |
22 files changed, 50 insertions, 85 deletions
diff --git a/arch/um/Kconfig.common b/arch/um/Kconfig.common index 20a49ba93cb9..43ef890d292c 100644 --- a/arch/um/Kconfig.common +++ b/arch/um/Kconfig.common @@ -56,11 +56,6 @@ config GENERIC_CLOCKEVENTS bool default y -# Used in kernel/irq/manage.c and include/linux/irq.h -config IRQ_RELEASE_METHOD - bool - default y - config HZ int default 100 diff --git a/arch/um/defconfig b/arch/um/defconfig index fdc97e2c3d73..7823ab12e6a4 100644 --- a/arch/um/defconfig +++ b/arch/um/defconfig @@ -12,7 +12,6 @@ CONFIG_LOCKDEP_SUPPORT=y CONFIG_GENERIC_CALIBRATE_DELAY=y CONFIG_GENERIC_BUG=y CONFIG_GENERIC_CLOCKEVENTS=y -CONFIG_IRQ_RELEASE_METHOD=y CONFIG_HZ=100 # diff --git a/arch/um/drivers/chan_kern.c b/arch/um/drivers/chan_kern.c index ca4c7ebfd0aa..45e248c2f43c 100644 --- a/arch/um/drivers/chan_kern.c +++ b/arch/um/drivers/chan_kern.c @@ -8,6 +8,7 @@ #include <linux/tty_flip.h> #include "chan.h" #include "os.h" +#include "irq_kern.h" #ifdef CONFIG_NOCONFIG_CHAN static void *not_configged_init(char *str, int device, @@ -213,9 +214,9 @@ void free_irqs(void) chan = list_entry(ele, struct chan, free_list); if (chan->input && chan->enabled) - free_irq(chan->line->driver->read_irq, chan); + um_free_irq(chan->line->driver->read_irq, chan); if (chan->output && chan->enabled) - free_irq(chan->line->driver->write_irq, chan); + um_free_irq(chan->line->driver->write_irq, chan); chan->enabled = 0; } } @@ -234,9 +235,9 @@ static void close_one_chan(struct chan *chan, int delay_free_irq) } else { if (chan->input && chan->enabled) - free_irq(chan->line->driver->read_irq, chan); + um_free_irq(chan->line->driver->read_irq, chan); if (chan->output && chan->enabled) - free_irq(chan->line->driver->write_irq, chan); + um_free_irq(chan->line->driver->write_irq, chan); chan->enabled = 0; } if (chan->ops->close != NULL) diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c index 4ab0d9c0911c..acfd0e0fd0c9 100644 --- a/arch/um/drivers/line.c +++ b/arch/um/drivers/line.c @@ -699,7 +699,7 @@ struct winch { static void __free_winch(struct work_struct *work) { struct winch *winch = container_of(work, struct winch, work); - free_irq(WINCH_IRQ, winch); + um_free_irq(WINCH_IRQ, winch); if (winch->pid != -1) os_kill_process(winch->pid, 1); diff --git a/arch/um/drivers/mconsole_kern.c b/arch/um/drivers/mconsole_kern.c index 43b39d61b538..88e466b159dc 100644 --- a/arch/um/drivers/mconsole_kern.c +++ b/arch/um/drivers/mconsole_kern.c @@ -705,6 +705,7 @@ static void stack_proc(void *arg) struct task_struct *from = current, *to = arg; to->thread.saved_task = from; + rcu_switch_from(from); switch_to(from, to, from); } diff --git a/arch/um/drivers/net_kern.c b/arch/um/drivers/net_kern.c index 95f4416e6d9f..0d60c5685c26 100644 --- a/arch/um/drivers/net_kern.c +++ b/arch/um/drivers/net_kern.c @@ -195,7 +195,7 @@ static int uml_net_close(struct net_device *dev) netif_stop_queue(dev); - free_irq(dev->irq, dev); + um_free_irq(dev->irq, dev); if (lp->close != NULL) (*lp->close)(lp->fd, &lp->user); lp->fd = -1; @@ -835,7 +835,7 @@ static void close_devices(void) spin_lock(&opened_lock); list_for_each(ele, &opened) { lp = list_entry(ele, struct uml_net_private, list); - free_irq(lp->dev->irq, lp->dev); + um_free_irq(lp->dev->irq, lp->dev); if ((lp->close != NULL) && (lp->fd >= 0)) (*lp->close)(lp->fd, &lp->user); if (lp->remove != NULL) diff --git a/arch/um/drivers/port_kern.c b/arch/um/drivers/port_kern.c index e31680e662a4..11866ffd45a9 100644 --- a/arch/um/drivers/port_kern.c +++ b/arch/um/drivers/port_kern.c @@ -254,7 +254,7 @@ int port_wait(void *data) * connection. Then we loop here throwing out failed * connections until a good one is found. */ - free_irq(TELNETD_IRQ, conn); + um_free_irq(TELNETD_IRQ, conn); if (conn->fd >= 0) break; diff --git a/arch/um/drivers/xterm_kern.c b/arch/um/drivers/xterm_kern.c index 8bd130f0bda3..b68bbe269e01 100644 --- a/arch/um/drivers/xterm_kern.c +++ b/arch/um/drivers/xterm_kern.c @@ -65,7 +65,7 @@ int xterm_fd(int socket, int *pid_out) * isn't set) this will hang... */ wait_for_completion(&data->ready); - free_irq(XTERM_IRQ, data); + um_free_irq(XTERM_IRQ, data); ret = data->new_fd; *pid_out = data->pid; diff --git a/arch/um/include/asm/pgtable.h b/arch/um/include/asm/pgtable.h index 6a3f9845743e..5888f1b83477 100644 --- a/arch/um/include/asm/pgtable.h +++ b/arch/um/include/asm/pgtable.h @@ -273,6 +273,12 @@ static inline void set_pte(pte_t *pteptr, pte_t pteval) } #define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval) +#define __HAVE_ARCH_PTE_SAME +static inline int pte_same(pte_t pte_a, pte_t pte_b) +{ + return !((pte_val(pte_a) ^ pte_val(pte_b)) & ~_PAGE_NEWPAGE); +} + /* * Conversion functions: convert a page and protection to a page entry, * and a page entry and page directory to the page they refer to. @@ -348,11 +354,11 @@ extern pte_t *virt_to_pte(struct mm_struct *mm, unsigned long addr); #define update_mmu_cache(vma,address,ptep) do ; while (0) /* Encode and de-code a swap entry */ -#define __swp_type(x) (((x).val >> 4) & 0x3f) +#define __swp_type(x) (((x).val >> 5) & 0x1f) #define __swp_offset(x) ((x).val >> 11) #define __swp_entry(type, offset) \ - ((swp_entry_t) { ((type) << 4) | ((offset) << 11) }) + ((swp_entry_t) { ((type) << 5) | ((offset) << 11) }) #define __pte_to_swp_entry(pte) \ ((swp_entry_t) { pte_val(pte_mkuptodate(pte)) }) #define __swp_entry_to_pte(x) ((pte_t) { (x).val }) diff --git a/arch/um/include/asm/processor-generic.h b/arch/um/include/asm/processor-generic.h index 63b716052d20..69f1c57a8d0d 100644 --- a/arch/um/include/asm/processor-generic.h +++ b/arch/um/include/asm/processor-generic.h @@ -68,8 +68,6 @@ struct thread_struct { .request = { 0 } \ } -extern struct task_struct *alloc_task_struct_node(int node); - static inline void release_thread(struct task_struct *task) { } diff --git a/arch/um/include/asm/thread_info.h b/arch/um/include/asm/thread_info.h index 200c4ab1240c..c04e5ab68f56 100644 --- a/arch/um/include/asm/thread_info.h +++ b/arch/um/include/asm/thread_info.h @@ -71,6 +71,7 @@ static inline struct thread_info *current_thread_info(void) #define TIF_MEMDIE 5 /* is terminating due to OOM killer */ #define TIF_SYSCALL_AUDIT 6 #define TIF_RESTORE_SIGMASK 7 +#define TIF_NOTIFY_RESUME 8 #define _TIF_SYSCALL_TRACE (1 << TIF_SYSCALL_TRACE) #define _TIF_SIGPENDING (1 << TIF_SIGPENDING) @@ -78,6 +79,5 @@ static inline struct thread_info *current_thread_info(void) #define _TIF_POLLING_NRFLAG (1 << TIF_POLLING_NRFLAG) #define _TIF_MEMDIE (1 << TIF_MEMDIE) #define _TIF_SYSCALL_AUDIT (1 << TIF_SYSCALL_AUDIT) -#define _TIF_RESTORE_SIGMASK (1 << TIF_RESTORE_SIGMASK) #endif diff --git a/arch/um/include/shared/irq_kern.h b/arch/um/include/shared/irq_kern.h index b05d22f3d84e..7a5bfa6291b8 100644 --- a/arch/um/include/shared/irq_kern.h +++ b/arch/um/include/shared/irq_kern.h @@ -13,6 +13,6 @@ extern int um_request_irq(unsigned int irq, int fd, int type, irq_handler_t handler, unsigned long irqflags, const char * devname, void *dev_id); - +void um_free_irq(unsigned int irq, void *dev); #endif diff --git a/arch/um/kernel/Makefile b/arch/um/kernel/Makefile index 65a1c3d690ea..babe21826e3e 100644 --- a/arch/um/kernel/Makefile +++ b/arch/um/kernel/Makefile @@ -10,7 +10,7 @@ CPPFLAGS_vmlinux.lds := -DSTART=$(LDS_START) \ extra-y := vmlinux.lds clean-files := -obj-y = config.o exec.o exitcode.o init_task.o irq.o ksyms.o mem.o \ +obj-y = config.o exec.o exitcode.o irq.o ksyms.o mem.o \ physmem.o process.o ptrace.o reboot.o sigio.o \ signal.o smp.o syscall.o sysrq.o time.o tlb.o trap.o \ um_arch.o umid.o skas/ diff --git a/arch/um/kernel/init_task.c b/arch/um/kernel/init_task.c deleted file mode 100644 index ddc9698b66ed..000000000000 --- a/arch/um/kernel/init_task.c +++ /dev/null @@ -1,38 +0,0 @@ -/* - * Copyright (C) 2000 - 2007 Jeff Dike (jdike@{addtoit,intel.linux}.com) - * Licensed under the GPL - */ - -#include "linux/sched.h" -#include "linux/init_task.h" -#include "linux/fs.h" -#include "linux/module.h" -#include "linux/mqueue.h" -#include "asm/uaccess.h" - -static struct signal_struct init_signals = INIT_SIGNALS(init_signals); -static struct sighand_struct init_sighand = INIT_SIGHAND(init_sighand); -/* - * Initial task structure. - * - * All other task structs will be allocated on slabs in fork.c - */ - -struct task_struct init_task = INIT_TASK(init_task); - -EXPORT_SYMBOL(init_task); - -/* - * Initial thread structure. - * - * We need to make sure that this is aligned due to the - * way process stacks are handled. This is done by having a special - * "init_task" linker map entry.. - */ - -union thread_union init_thread_union __init_task_data = - { INIT_THREAD_INFO(init_task) }; - -union thread_union cpu0_irqstack - __attribute__((__section__(".data..init_irqstack"))) = - { INIT_THREAD_INFO(init_task) }; diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c index 71b8c947e5ef..00506c3d5d6e 100644 --- a/arch/um/kernel/irq.c +++ b/arch/um/kernel/irq.c @@ -297,6 +297,13 @@ unsigned int do_IRQ(int irq, struct uml_pt_regs *regs) return 1; } +void um_free_irq(unsigned int irq, void *dev) +{ + free_irq_by_irq_and_dev(irq, dev); + free_irq(irq, dev); +} +EXPORT_SYMBOL(um_free_irq); + int um_request_irq(unsigned int irq, int fd, int type, irq_handler_t handler, unsigned long irqflags, const char * devname, @@ -327,7 +334,6 @@ static void dummy(struct irq_data *d) /* This is used for everything else than the timer. */ static struct irq_chip normal_irq_type = { .name = "SIGIO", - .release = free_irq_by_irq_and_dev, .irq_disable = dummy, .irq_enable = dummy, .irq_ack = dummy, @@ -335,7 +341,6 @@ static struct irq_chip normal_irq_type = { static struct irq_chip SIGVTALRM_irq_type = { .name = "SIGVTALRM", - .release = free_irq_by_irq_and_dev, .irq_disable = dummy, .irq_enable = dummy, .irq_ack = dummy, diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c index 2b73dedb44ca..3a2235e0abc3 100644 --- a/arch/um/kernel/process.c +++ b/arch/um/kernel/process.c @@ -18,6 +18,7 @@ #include <linux/seq_file.h> #include <linux/tick.h> #include <linux/threads.h> +#include <linux/tracehook.h> #include <asm/current.h> #include <asm/pgtable.h> #include <asm/mmu_context.h> @@ -114,8 +115,13 @@ void interrupt_end(void) { if (need_resched()) schedule(); - if (test_tsk_thread_flag(current, TIF_SIGPENDING)) + if (test_thread_flag(TIF_SIGPENDING)) do_signal(); + if (test_and_clear_thread_flag(TIF_NOTIFY_RESUME)) { + tracehook_notify_resume(¤t->thread.regs); + if (current->replacement_session_keyring) + key_replace_session_keyring(); + } } void exit_thread(void) @@ -190,7 +196,7 @@ int copy_thread(unsigned long clone_flags, unsigned long sp, if (current->thread.forking) { memcpy(&p->thread.regs.regs, ®s->regs, sizeof(p->thread.regs.regs)); - REGS_SET_SYSCALL_RETURN(p->thread.regs.regs.gp, 0); + UPT_SET_SYSCALL_RETURN(&p->thread.regs.regs, 0); if (sp != 0) REGS_SP(p->thread.regs.regs.gp) = sp; diff --git a/arch/um/kernel/signal.c b/arch/um/kernel/signal.c index fb12f4c5e649..187118fbe1bc 100644 --- a/arch/um/kernel/signal.c +++ b/arch/um/kernel/signal.c @@ -29,9 +29,6 @@ static int handle_signal(struct pt_regs *regs, unsigned long signr, unsigned long sp; int err; - /* Always make any pending restarted system calls return -EINTR */ - current_thread_info()->restart_block.fn = do_no_restart_syscall; - /* Did we come from a system call? */ if (PT_REGS_SYSCALL_NR(regs) >= 0) { /* If so, check system call restarting.. */ @@ -77,15 +74,14 @@ static int kern_do_signal(struct pt_regs *regs) { struct k_sigaction ka_copy; siginfo_t info; - sigset_t *oldset; int sig, handled_sig = 0; - if (test_thread_flag(TIF_RESTORE_SIGMASK)) - oldset = ¤t->saved_sigmask; - else - oldset = ¤t->blocked; - while ((sig = get_signal_to_deliver(&info, &ka_copy, regs, NULL)) > 0) { + sigset_t *oldset; + if (test_thread_flag(TIF_RESTORE_SIGMASK)) + oldset = ¤t->saved_sigmask; + else + oldset = ¤t->blocked; handled_sig = 1; /* Whee! Actually deliver the signal. */ if (!handle_signal(regs, sig, &ka_copy, &info, oldset)) { diff --git a/arch/um/kernel/skas/syscall.c b/arch/um/kernel/skas/syscall.c index f5173e1ec3ac..05fbeb480e0b 100644 --- a/arch/um/kernel/skas/syscall.c +++ b/arch/um/kernel/skas/syscall.c @@ -34,7 +34,7 @@ void handle_syscall(struct uml_pt_regs *r) result = -ENOSYS; else result = EXECUTE_SYSCALL(syscall, regs); - REGS_SET_SYSCALL_RETURN(r->gp, result); + UPT_SET_SYSCALL_RETURN(r, result); syscall_trace(r, 1); } diff --git a/arch/um/kernel/smp.c b/arch/um/kernel/smp.c index 6f588e160fb0..a02b7e9e6b94 100644 --- a/arch/um/kernel/smp.c +++ b/arch/um/kernel/smp.c @@ -140,7 +140,7 @@ void smp_prepare_boot_cpu(void) set_cpu_online(smp_processor_id(), true); } -int __cpu_up(unsigned int cpu) +int __cpu_up(unsigned int cpu, struct task_struct *tidle) { cpu_set(cpu, smp_commenced_mask); while (!cpu_online(cpu)) diff --git a/arch/um/kernel/tlb.c b/arch/um/kernel/tlb.c index 7f3d4d86431a..f819af951c19 100644 --- a/arch/um/kernel/tlb.c +++ b/arch/um/kernel/tlb.c @@ -75,6 +75,7 @@ static int do_ops(struct host_vm_change *hvc, int end, default: printk(KERN_ERR "Unknown op type %d in do_ops\n", op->type); + BUG(); break; } } diff --git a/arch/um/kernel/um_arch.c b/arch/um/kernel/um_arch.c index ba00eae45aad..4db8770906ca 100644 --- a/arch/um/kernel/um_arch.c +++ b/arch/um/kernel/um_arch.c @@ -10,6 +10,7 @@ #include <linux/seq_file.h> #include <linux/string.h> #include <linux/utsname.h> +#include <linux/sched.h> #include <asm/pgtable.h> #include <asm/processor.h> #include <asm/setup.h> @@ -47,6 +48,10 @@ struct cpuinfo_um boot_cpu_data = { .ipi_pipe = { -1, -1 } }; +union thread_union cpu0_irqstack + __attribute__((__section__(".data..init_irqstack"))) = + { INIT_THREAD_INFO(init_task) }; + unsigned long thread_saved_pc(struct task_struct *task) { /* FIXME: Need to look up userspace_pid by cpu */ diff --git a/arch/um/os-Linux/skas/mem.c b/arch/um/os-Linux/skas/mem.c index c0afff7af4bd..90b310d29179 100644 --- a/arch/um/os-Linux/skas/mem.c +++ b/arch/um/os-Linux/skas/mem.c @@ -48,10 +48,6 @@ __initcall(init_syscall_regs); extern int proc_mm; -int single_count = 0; -int multi_count = 0; -int multi_op_count = 0; - static inline long do_syscall_stub(struct mm_id * mm_idp, void **addr) { int n, i; @@ -64,8 +60,6 @@ static inline long do_syscall_stub(struct mm_id * mm_idp, void **addr) /* FIXME: Need to look up userspace_pid by cpu */ pid = userspace_pid[0]; - multi_count++; - n = ptrace_setregs(pid, syscall_regs); if (n < 0) { printk(UM_KERN_ERR "Registers - \n"); @@ -126,9 +120,6 @@ long run_syscall_stub(struct mm_id * mm_idp, int syscall, { unsigned long *stack = check_init_stack(mm_idp, *addr); - if (done && *addr == NULL) - single_count++; - *stack += sizeof(long); stack += *stack / sizeof(long); @@ -141,7 +132,6 @@ long run_syscall_stub(struct mm_id * mm_idp, int syscall, *stack++ = args[5]; *stack++ = expected; *stack = 0; - multi_op_count++; if (!done && ((((unsigned long) stack) & ~UM_KERN_PAGE_MASK) < UM_KERN_PAGE_SIZE - 10 * sizeof(long))) { |