From: Al Viro <v...@zeniv.linux.org.uk> Signed-off-by: Al Viro <v...@zeniv.linux.org.uk> --- arch/um/drivers/chan_user.c | 6 +++--- arch/um/drivers/chan_user.h | 2 +- arch/um/drivers/line.c | 8 ++++---- arch/um/drivers/ubd.h | 2 +- arch/um/drivers/ubd_kern.c | 2 +- arch/um/drivers/ubd_user.c | 4 ++-- arch/um/include/shared/kern_util.h | 4 ++-- arch/um/include/shared/os.h | 6 +++--- arch/um/include/shared/skas/mm_id.h | 2 +- arch/um/include/shared/skas/skas.h | 2 +- arch/um/kernel/process.c | 11 ++++------- arch/um/kernel/skas/mmu.c | 17 ++++++++--------- arch/um/kernel/skas/process.c | 4 ++-- arch/um/os-Linux/aio.c | 2 +- arch/um/os-Linux/helper.c | 14 +++++++------- arch/um/os-Linux/sigio.c | 2 +- arch/um/os-Linux/skas/process.c | 19 +++++++++---------- 17 files changed, 51 insertions(+), 56 deletions(-)
diff --git a/arch/um/drivers/chan_user.c b/arch/um/drivers/chan_user.c index 3fd7c3e..bbda889 100644 --- a/arch/um/drivers/chan_user.c +++ b/arch/um/drivers/chan_user.c @@ -217,7 +217,7 @@ static int winch_thread(void *arg) } static int winch_tramp(int fd, struct tty_port *port, int *fd_out, - unsigned long *stack_out) + void **stack_out) { struct winch_data data; int fds[2], n, err; @@ -273,7 +273,7 @@ static int winch_tramp(int fd, struct tty_port *port, int *fd_out, void register_winch(int fd, struct tty_port *port) { - unsigned long stack; + void *stack; int pid, thread, count, thread_fd = -1; char c = 1; @@ -282,7 +282,7 @@ void register_winch(int fd, struct tty_port *port) pid = tcgetpgrp(fd); if (is_skas_winch(pid, fd, port)) { - register_winch_irq(-1, fd, -1, port, 0); + register_winch_irq(-1, fd, -1, port, NULL); return; } diff --git a/arch/um/drivers/chan_user.h b/arch/um/drivers/chan_user.h index 03f1b56..9cc900b 100644 --- a/arch/um/drivers/chan_user.h +++ b/arch/um/drivers/chan_user.h @@ -41,7 +41,7 @@ extern void generic_free(void *data); struct tty_port; extern void register_winch(int fd, struct tty_port *port); extern void register_winch_irq(int fd, int tty_fd, int pid, - struct tty_port *port, unsigned long stack); + struct tty_port *port, void *stack); #define __channel_help(fn, prefix) \ __uml_help(fn, prefix "[0-9]*=<channel description>\n" \ diff --git a/arch/um/drivers/line.c b/arch/um/drivers/line.c index 6208702..ae8a5b1 100644 --- a/arch/um/drivers/line.c +++ b/arch/um/drivers/line.c @@ -598,7 +598,7 @@ struct winch { int tty_fd; int pid; struct tty_port *port; - unsigned long stack; + void *stack; struct work_struct work; }; @@ -609,7 +609,7 @@ static void __free_winch(struct work_struct *work) if (winch->pid != -1) os_kill_process(winch->pid, 1); - if (winch->stack != 0) + if (winch->stack) free_stack(winch->stack, 0); kfree(winch); } @@ -672,7 +672,7 @@ static irqreturn_t winch_interrupt(int irq, void *data) } void register_winch_irq(int fd, int tty_fd, int pid, struct tty_port *port, - unsigned long stack) + void *stack) { struct winch *winch; @@ -707,7 +707,7 @@ void register_winch_irq(int fd, int tty_fd, int pid, struct tty_port *port, cleanup: os_kill_process(pid, 1); os_close_file(fd); - if (stack != 0) + if (stack) free_stack(stack, 0); } diff --git a/arch/um/drivers/ubd.h b/arch/um/drivers/ubd.h index 3b48cd2..5507e2c 100644 --- a/arch/um/drivers/ubd.h +++ b/arch/um/drivers/ubd.h @@ -7,7 +7,7 @@ #ifndef __UM_UBD_USER_H #define __UM_UBD_USER_H -extern int start_io_thread(unsigned long sp, int *fds_out); +extern int start_io_thread(void *sp, int *fds_out); extern int io_thread(void *arg); extern int kernel_fd; diff --git a/arch/um/drivers/ubd_kern.c b/arch/um/drivers/ubd_kern.c index e8ab93c..e88fe7c 100644 --- a/arch/um/drivers/ubd_kern.c +++ b/arch/um/drivers/ubd_kern.c @@ -1082,7 +1082,7 @@ static int __init ubd_init(void) late_initcall(ubd_init); static int __init ubd_driver_init(void){ - unsigned long stack; + void *stack; int err; /* Set by CONFIG_BLK_DEV_UBD_SYNC or ubd=sync.*/ diff --git a/arch/um/drivers/ubd_user.c b/arch/um/drivers/ubd_user.c index e376f9b..47791d4 100644 --- a/arch/um/drivers/ubd_user.c +++ b/arch/um/drivers/ubd_user.c @@ -21,7 +21,7 @@ #include "ubd.h" #include <os.h> -int start_io_thread(unsigned long sp, int *fd_out) +int start_io_thread(void *sp, int *fd_out) { int pid, fds[2], err; @@ -40,7 +40,7 @@ int start_io_thread(unsigned long sp, int *fd_out) goto out_close; } - pid = clone(io_thread, (void *) sp, CLONE_FILES | CLONE_VM, NULL); + pid = clone(io_thread, sp, CLONE_FILES | CLONE_VM, NULL); if(pid < 0){ err = -errno; printk("start_io_thread - clone failed : errno = %d\n", errno); diff --git a/arch/um/include/shared/kern_util.h b/arch/um/include/shared/kern_util.h index 35ab97e..886e362 100644 --- a/arch/um/include/shared/kern_util.h +++ b/arch/um/include/shared/kern_util.h @@ -19,8 +19,8 @@ extern int kmalloc_ok; #define UML_ROUND_UP(addr) \ ((((unsigned long) addr) + PAGE_SIZE - 1) & PAGE_MASK) -extern unsigned long alloc_stack(int order, int atomic); -extern void free_stack(unsigned long stack, int order); +extern void *alloc_stack(int order, int atomic); +extern void free_stack(void *stack, int order); struct pt_regs; extern void do_signal(struct pt_regs *regs); diff --git a/arch/um/include/shared/os.h b/arch/um/include/shared/os.h index 868e6c3..fc47885 100644 --- a/arch/um/include/shared/os.h +++ b/arch/um/include/shared/os.h @@ -210,7 +210,7 @@ extern int execvp_noalloc(char *buf, const char *file, char *const argv[]); /* helper.c */ extern int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv); extern int run_helper_thread(int (*proc)(void *), void *arg, - unsigned int flags, unsigned long *stack_out); + unsigned int flags, void **stack_out); extern int helper_wait(int pid); @@ -270,8 +270,8 @@ extern int protect(struct mm_id * mm_idp, unsigned long addr, /* skas/process.c */ extern int is_skas_winch(int pid, int fd, void *data); -extern int start_userspace(unsigned long stub_stack); -extern int copy_context_skas0(unsigned long stack, int pid); +extern int start_userspace(void *stub_stack); +extern int copy_context_skas0(void *stack, int pid); extern void userspace(struct uml_pt_regs *regs); extern int map_stub_pages(int fd, unsigned long code, unsigned long data, unsigned long stack); diff --git a/arch/um/include/shared/skas/mm_id.h b/arch/um/include/shared/skas/mm_id.h index 48dd098..b75c535 100644 --- a/arch/um/include/shared/skas/mm_id.h +++ b/arch/um/include/shared/skas/mm_id.h @@ -11,7 +11,7 @@ struct mm_id { int mm_fd; int pid; } u; - unsigned long stack; + void *stack; }; #endif diff --git a/arch/um/include/shared/skas/skas.h b/arch/um/include/shared/skas/skas.h index 911f3c4..689d0c6 100644 --- a/arch/um/include/shared/skas/skas.h +++ b/arch/um/include/shared/skas/skas.h @@ -14,6 +14,6 @@ extern int user_thread(unsigned long stack, int flags); extern void new_thread_handler(void); extern void handle_syscall(struct uml_pt_regs *regs); extern long execute_syscall_skas(void *r); -extern unsigned long current_stub_stack(void); +extern void *current_stub_stack(void); #endif diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c index b77685b..69c8d56 100644 --- a/arch/um/kernel/process.c +++ b/arch/um/kernel/process.c @@ -55,21 +55,18 @@ int pid_to_processor_id(int pid) return -1; } -void free_stack(unsigned long stack, int order) +void free_stack(void *stack, int order) { - free_pages((void *)stack, order); + free_pages(stack, order); } -unsigned long alloc_stack(int order, int atomic) +void *alloc_stack(int order, int atomic) { - unsigned long page; gfp_t flags = GFP_KERNEL; if (atomic) flags = GFP_ATOMIC; - page = __get_free_pages(flags, order); - - return page; + return (void *)__get_free_pages(flags, order); } static inline void set_current(struct task_struct *task) diff --git a/arch/um/kernel/skas/mmu.c b/arch/um/kernel/skas/mmu.c index 6898b23..a0e5758 100644 --- a/arch/um/kernel/skas/mmu.c +++ b/arch/um/kernel/skas/mmu.c @@ -15,7 +15,7 @@ #include <skas.h> static int init_stub_pte(struct mm_struct *mm, unsigned long proc, - unsigned long kernel) + void *kernel) { pgd_t *pgd; pud_t *pud; @@ -51,11 +51,11 @@ int init_new_context(struct task_struct *task, struct mm_struct *mm) { struct mm_context *from_mm = NULL; struct mm_context *to_mm = &mm->context; - unsigned long stack = 0; + void *stack; int ret = -ENOMEM; - stack = (unsigned long)get_zeroed_page(GFP_KERNEL); - if (stack == 0) + stack = get_zeroed_page(GFP_KERNEL); + if (!stack) goto out; to_mm->id.stack = stack; @@ -84,8 +84,8 @@ int init_new_context(struct task_struct *task, struct mm_struct *mm) return 0; out_free: - if (to_mm->id.stack != 0) - free_page((void *)to_mm->id.stack); + if (to_mm->id.stack) + free_page(to_mm->id.stack); out: return ret; } @@ -94,8 +94,7 @@ void uml_setup_stubs(struct mm_struct *mm) { int err, ret; - ret = init_stub_pte(mm, STUB_CODE, - (unsigned long) __syscall_stub_start); + ret = init_stub_pte(mm, STUB_CODE, __syscall_stub_start); if (ret) goto out; @@ -153,6 +152,6 @@ void destroy_context(struct mm_struct *mm) } os_kill_ptraced_process(mmu->id.u.pid, 1); - free_page((void *)mmu->id.stack); + free_page(mmu->id.stack); free_ldt(mmu); } diff --git a/arch/um/kernel/skas/process.c b/arch/um/kernel/skas/process.c index 527fa58..1a2d485 100644 --- a/arch/um/kernel/skas/process.c +++ b/arch/um/kernel/skas/process.c @@ -43,10 +43,10 @@ int __init start_uml(void) &init_task.thread.switch_buf); } -unsigned long current_stub_stack(void) +void *current_stub_stack(void) { if (current->mm == NULL) - return 0; + return NULL; return current->mm->context.id.stack; } diff --git a/arch/um/os-Linux/aio.c b/arch/um/os-Linux/aio.c index 014eb35..e029471 100644 --- a/arch/um/os-Linux/aio.c +++ b/arch/um/os-Linux/aio.c @@ -164,7 +164,7 @@ static int do_not_aio(struct aio_thread_req *req) static int aio_req_fd_r = -1; static int aio_req_fd_w = -1; static int aio_pid = -1; -static unsigned long aio_stack; +static void *aio_stack; static int not_aio_thread(void *arg) { diff --git a/arch/um/os-Linux/helper.c b/arch/um/os-Linux/helper.c index 3f02d42..8653db7 100644 --- a/arch/um/os-Linux/helper.c +++ b/arch/um/os-Linux/helper.c @@ -42,11 +42,11 @@ static int helper_child(void *arg) int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv) { struct helper_data data; - unsigned long stack, sp; + void *stack, *sp; int pid, fds[2], ret, n; stack = alloc_stack(0, __cant_sleep()); - if (stack == 0) + if (!stack) return -ENOMEM; ret = socketpair(AF_UNIX, SOCK_STREAM, 0, fds); @@ -71,7 +71,7 @@ int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv) data.fd = fds[1]; data.buf = __cant_sleep() ? uml_kmalloc(PATH_MAX, UM_GFP_ATOMIC) : uml_kmalloc(PATH_MAX, UM_GFP_KERNEL); - pid = clone(helper_child, (void *) sp, CLONE_VM, &data); + pid = clone(helper_child, sp, CLONE_VM, &data); if (pid < 0) { ret = -errno; printk(UM_KERN_ERR "run_helper : clone failed, errno = %d\n", @@ -111,17 +111,17 @@ out_free: } int run_helper_thread(int (*proc)(void *), void *arg, unsigned int flags, - unsigned long *stack_out) + void **stack_out) { - unsigned long stack, sp; + void *stack, *sp; int pid, status, err; stack = alloc_stack(0, __cant_sleep()); - if (stack == 0) + if (!stack) return -ENOMEM; sp = stack + UM_KERN_PAGE_SIZE - sizeof(void *); - pid = clone(proc, (void *) sp, flags, arg); + pid = clone(proc, sp, flags, arg); if (pid < 0) { err = -errno; printk(UM_KERN_ERR "run_helper_thread : clone failed, " diff --git a/arch/um/os-Linux/sigio.c b/arch/um/os-Linux/sigio.c index 46e762f..a5f8fa5 100644 --- a/arch/um/os-Linux/sigio.c +++ b/arch/um/os-Linux/sigio.c @@ -22,7 +22,7 @@ * exitcall. */ static int write_sigio_pid = -1; -static unsigned long write_sigio_stack; +static void *write_sigio_stack; /* * These arrays are initialized before the sigio thread is started, and diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c index b856c66..ec32886 100644 --- a/arch/um/os-Linux/skas/process.c +++ b/arch/um/os-Linux/skas/process.c @@ -85,7 +85,7 @@ bad_wait: fatal_sigsegv(); } -extern unsigned long current_stub_stack(void); +extern void *current_stub_stack(void); static void get_skas_faultinfo(int pid, struct faultinfo *fi) { @@ -110,7 +110,7 @@ static void get_skas_faultinfo(int pid, struct faultinfo *fi) * faultinfo is prepared by the stub-segv-handler at start of * the stub stack page. We just have to copy it. */ - memcpy(fi, (void *)current_stub_stack(), sizeof(*fi)); + memcpy(fi, current_stub_stack(), sizeof(*fi)); err = put_fp_registers(pid, fpregs); if (err < 0) { @@ -245,10 +245,9 @@ static int userspace_tramp(void *stack) #define NR_CPUS 1 int userspace_pid[NR_CPUS]; -int start_userspace(unsigned long stub_stack) +int start_userspace(void *stub_stack) { - void *stack; - unsigned long sp; + void *stack, *sp; int pid, status, n, flags, err; stack = mmap(NULL, UM_KERN_PAGE_SIZE, @@ -261,11 +260,11 @@ int start_userspace(unsigned long stub_stack) return err; } - sp = (unsigned long) stack + UM_KERN_PAGE_SIZE - sizeof(void *); + sp = stack + UM_KERN_PAGE_SIZE - sizeof(void *); flags = CLONE_FILES | SIGCHLD; - pid = clone(userspace_tramp, (void *) sp, flags, (void *) stub_stack); + pid = clone(userspace_tramp, sp, flags, stub_stack); if (pid < 0) { err = -errno; printk(UM_KERN_ERR "start_userspace : clone failed, " @@ -439,14 +438,14 @@ static int __init init_thread_regs(void) __initcall(init_thread_regs); -int copy_context_skas0(unsigned long new_stack, int pid) +int copy_context_skas0(void *new_stack, int pid) { int err; - unsigned long current_stack = current_stub_stack(); + void *current_stack = current_stub_stack(); struct stub_data *data = (struct stub_data *) current_stack; struct stub_data *child_data = (struct stub_data *) new_stack; unsigned long long new_offset; - int new_fd = phys_mapping(to_phys((void *)new_stack), &new_offset); + int new_fd = phys_mapping(to_phys(new_stack), &new_offset); /* * prepare offset and fd of child's stack as argument for parent's -- 2.1.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/