diff options
Diffstat (limited to 'arch')
28 files changed, 83 insertions, 39 deletions
diff --git a/arch/arm/mach-lh7a40x/common.h b/arch/arm/mach-lh7a40x/common.h index 18e8bb4eb202..0ca20c6c83b7 100644 --- a/arch/arm/mach-lh7a40x/common.h +++ b/arch/arm/mach-lh7a40x/common.h @@ -15,4 +15,4 @@ extern void lh7a404_init_irq (void); extern void lh7a40x_clcd_init (void); extern void lh7a40x_init_board_irq (void); -#define IRQ_DISPATCH(irq) desc_handle_irq((irq),(irq_desc + irq), regs) +#define IRQ_DISPATCH(irq) desc_handle_irq((irq),(irq_desc + irq)) diff --git a/arch/i386/kernel/alternative.c b/arch/i386/kernel/alternative.c index 28ab80649764..583c238e17fb 100644 --- a/arch/i386/kernel/alternative.c +++ b/arch/i386/kernel/alternative.c @@ -344,6 +344,7 @@ void alternatives_smp_switch(int smp) void __init alternative_instructions(void) { + unsigned long flags; if (no_replacement) { printk(KERN_INFO "(SMP-)alternatives turned off\n"); free_init_pages("SMP alternatives", @@ -351,6 +352,8 @@ void __init alternative_instructions(void) (unsigned long)__smp_alt_end); return; } + + local_irq_save(flags); apply_alternatives(__alt_instructions, __alt_instructions_end); /* switch to patch-once-at-boottime-only mode and free the @@ -386,4 +389,5 @@ void __init alternative_instructions(void) alternatives_smp_switch(0); } #endif + local_irq_restore(flags); } diff --git a/arch/i386/lib/usercopy.c b/arch/i386/lib/usercopy.c index 258df6b4d7d7..d22cfc9d656c 100644 --- a/arch/i386/lib/usercopy.c +++ b/arch/i386/lib/usercopy.c @@ -9,6 +9,7 @@ #include <linux/highmem.h> #include <linux/blkdev.h> #include <linux/module.h> +#include <linux/backing-dev.h> #include <asm/uaccess.h> #include <asm/mmx.h> @@ -741,7 +742,7 @@ survive: if (retval == -ENOMEM && is_init(current)) { up_read(¤t->mm->mmap_sem); - blk_congestion_wait(WRITE, HZ/50); + congestion_wait(WRITE, HZ/50); goto survive; } diff --git a/arch/um/Kconfig b/arch/um/Kconfig index 78fb619bdb73..5ac1f2963ae3 100644 --- a/arch/um/Kconfig +++ b/arch/um/Kconfig @@ -1,3 +1,8 @@ +config DEFCONFIG_LIST + string + option defconfig_list + default "arch/$ARCH/defconfig" + # UML uses the generic IRQ sugsystem config GENERIC_HARDIRQS bool @@ -52,6 +57,7 @@ menu "UML-specific options" config MODE_TT bool "Tracing thread support (DEPRECATED)" default n + depends on BROKEN help This option controls whether tracing thread support is compiled into UML. This option is largely obsolete, given that skas0 provides diff --git a/arch/um/Kconfig.char b/arch/um/Kconfig.char index 62d87b71179b..e03e40c7aac3 100644 --- a/arch/um/Kconfig.char +++ b/arch/um/Kconfig.char @@ -190,6 +190,11 @@ config HOSTAUDIO tristate default UML_SOUND +#It is selected elsewhere, so kconfig would warn without this. +config HW_RANDOM + tristate + default n + config UML_RANDOM tristate "Hardware random number generator" help diff --git a/arch/um/drivers/cow_sys.h b/arch/um/drivers/cow_sys.h index 7a5b4afde692..c6a308464acb 100644 --- a/arch/um/drivers/cow_sys.h +++ b/arch/um/drivers/cow_sys.h @@ -5,6 +5,7 @@ #include "user_util.h" #include "os.h" #include "user.h" +#include "um_malloc.h" static inline void *cow_malloc(int size) { diff --git a/arch/um/drivers/daemon_user.c b/arch/um/drivers/daemon_user.c index 77954ea77043..310af0f1e49e 100644 --- a/arch/um/drivers/daemon_user.c +++ b/arch/um/drivers/daemon_user.c @@ -17,6 +17,7 @@ #include "user_util.h" #include "user.h" #include "os.h" +#include "um_malloc.h" #define MAX_PACKET (ETH_MAX_PACKET + ETH_HEADER_OTHER) diff --git a/arch/um/drivers/fd.c b/arch/um/drivers/fd.c index 108b7dafbd0e..218aa0e9b792 100644 --- a/arch/um/drivers/fd.c +++ b/arch/um/drivers/fd.c @@ -12,6 +12,7 @@ #include "user_util.h" #include "chan_user.h" #include "os.h" +#include "um_malloc.h" struct fd_chan { int fd; diff --git a/arch/um/drivers/mcast_user.c b/arch/um/drivers/mcast_user.c index 4d2bd39a85bc..8138f5ea1bf7 100644 --- a/arch/um/drivers/mcast_user.c +++ b/arch/um/drivers/mcast_user.c @@ -23,6 +23,7 @@ #include "user_util.h" #include "user.h" #include "os.h" +#include "um_malloc.h" #define MAX_PACKET (ETH_MAX_PACKET + ETH_HEADER_OTHER) diff --git a/arch/um/drivers/mmapper_kern.c b/arch/um/drivers/mmapper_kern.c index 9a3b5daf6250..df3516e47d4d 100644 --- a/arch/um/drivers/mmapper_kern.c +++ b/arch/um/drivers/mmapper_kern.c @@ -95,7 +95,8 @@ static const struct file_operations mmapper_fops = { .release = mmapper_release, }; -static const struct miscdevice mmapper_dev = { +/* No locking needed - only used (and modified) by below initcall and exitcall. */ +static struct miscdevice mmapper_dev = { .minor = MISC_DYNAMIC_MINOR, .name = "mmapper", .fops = &mmapper_fops diff --git a/arch/um/drivers/net_user.c b/arch/um/drivers/net_user.c index f3a3f8a29c7a..0ffd7ac295d4 100644 --- a/arch/um/drivers/net_user.c +++ b/arch/um/drivers/net_user.c @@ -18,6 +18,7 @@ #include "kern_util.h" #include "net_user.h" #include "os.h" +#include "um_malloc.h" int tap_open_common(void *dev, char *gate_addr) { diff --git a/arch/um/drivers/pcap_user.c b/arch/um/drivers/pcap_user.c index 2ef641ded960..11921a7baa7b 100644 --- a/arch/um/drivers/pcap_user.c +++ b/arch/um/drivers/pcap_user.c @@ -12,6 +12,7 @@ #include "net_user.h" #include "pcap_user.h" #include "user.h" +#include "um_malloc.h" #define MAX_PACKET (ETH_MAX_PACKET + ETH_HEADER_OTHER) diff --git a/arch/um/drivers/port_user.c b/arch/um/drivers/port_user.c index f2e8fc42ecc2..bc6afaf74c1a 100644 --- a/arch/um/drivers/port_user.c +++ b/arch/um/drivers/port_user.c @@ -19,6 +19,7 @@ #include "chan_user.h" #include "port.h" #include "os.h" +#include "um_malloc.h" struct port_chan { int raw; diff --git a/arch/um/drivers/pty.c b/arch/um/drivers/pty.c index abec620e8380..829a5eca8c07 100644 --- a/arch/um/drivers/pty.c +++ b/arch/um/drivers/pty.c @@ -13,6 +13,7 @@ #include "user_util.h" #include "kern_util.h" #include "os.h" +#include "um_malloc.h" struct pty_chan { void (*announce)(char *dev_name, int dev); diff --git a/arch/um/drivers/slip_user.c b/arch/um/drivers/slip_user.c index 8460285c69a5..7eddacc53b6e 100644 --- a/arch/um/drivers/slip_user.c +++ b/arch/um/drivers/slip_user.c @@ -15,6 +15,7 @@ #include "slip.h" #include "slip_common.h" #include "os.h" +#include "um_malloc.h" void slip_user_init(void *data, void *dev) { diff --git a/arch/um/drivers/tty.c b/arch/um/drivers/tty.c index 11de3ac1eb5c..d95d64309eaf 100644 --- a/arch/um/drivers/tty.c +++ b/arch/um/drivers/tty.c @@ -11,6 +11,7 @@ #include "user_util.h" #include "user.h" #include "os.h" +#include "um_malloc.h" struct tty_chan { char *dev; diff --git a/arch/um/drivers/xterm.c b/arch/um/drivers/xterm.c index 386f8b952982..850221d9b4c9 100644 --- a/arch/um/drivers/xterm.c +++ b/arch/um/drivers/xterm.c @@ -136,8 +136,6 @@ int xterm_open(int input, int output, int primary, void *d, return(pid); } - if(data->stack == 0) free_stack(stack, 0); - if (data->direct_rcv) { new = os_rcv_fd(fd, &data->helper_pid); } else { diff --git a/arch/um/include/um_malloc.h b/arch/um/include/um_malloc.h new file mode 100644 index 000000000000..0363a9b53f8d --- /dev/null +++ b/arch/um/include/um_malloc.h @@ -0,0 +1,17 @@ +/* + * Copyright (C) 2005 Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> + * Licensed under the GPL + */ + +#ifndef __UM_MALLOC_H__ +#define __UM_MALLOC_H__ + +extern void *um_kmalloc(int size); +extern void *um_kmalloc_atomic(int size); +extern void kfree(const void *ptr); + +extern void *um_vmalloc(int size); +extern void *um_vmalloc_atomic(int size); +extern void vfree(void *ptr); + +#endif /* __UM_MALLOC_H__ */ diff --git a/arch/um/include/user.h b/arch/um/include/user.h index 39f8c8801076..acadce3f271f 100644 --- a/arch/um/include/user.h +++ b/arch/um/include/user.h @@ -11,17 +11,11 @@ extern void panic(const char *fmt, ...) extern int printk(const char *fmt, ...) __attribute__ ((format (printf, 1, 2))); extern void schedule(void); -extern void *um_kmalloc(int size); -extern void *um_kmalloc_atomic(int size); -extern void kfree(void *ptr); extern int in_aton(char *str); extern int open_gdb_chan(void); /* These use size_t, however unsigned long is correct on both i386 and x86_64. */ extern unsigned long strlcpy(char *, const char *, unsigned long); extern unsigned long strlcat(char *, const char *, unsigned long); -extern void *um_vmalloc(int size); -extern void *um_vmalloc_atomic(int size); -extern void vfree(void *ptr); #endif diff --git a/arch/um/include/user_util.h b/arch/um/include/user_util.h index 802d7842514d..06625fefef33 100644 --- a/arch/um/include/user_util.h +++ b/arch/um/include/user_util.h @@ -52,7 +52,6 @@ extern int linux_main(int argc, char **argv); extern void set_cmdline(char *cmd); extern void input_cb(void (*proc)(void *), void *arg, int arg_len); extern int get_pty(void); -extern void *um_kmalloc(int size); extern int switcheroo(int fd, int prot, void *from, void *to, int size); extern void do_exec(int old_pid, int new_pid); extern void tracer_panic(char *msg, ...) diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c index ef259569fd8c..5c1e611f628d 100644 --- a/arch/um/kernel/irq.c +++ b/arch/um/kernel/irq.c @@ -31,6 +31,7 @@ #include "irq_kern.h" #include "os.h" #include "sigio.h" +#include "um_malloc.h" #include "misc_constants.h" /* diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c index fe6c64abda5b..348b272bb766 100644 --- a/arch/um/kernel/process.c +++ b/arch/um/kernel/process.c @@ -46,6 +46,7 @@ #include "mode.h" #include "mode_kern.h" #include "choose-mode.h" +#include "um_malloc.h" /* This is a per-cpu array. A processor only modifies its entry and it only * cares about its entry, so it's OK if another processor is modifying its diff --git a/arch/um/os-Linux/drivers/ethertap_user.c b/arch/um/os-Linux/drivers/ethertap_user.c index f559bdf746e6..863981ba1468 100644 --- a/arch/um/os-Linux/drivers/ethertap_user.c +++ b/arch/um/os-Linux/drivers/ethertap_user.c @@ -20,6 +20,7 @@ #include "net_user.h" #include "etap.h" #include "os.h" +#include "um_malloc.h" #define MAX_PACKET ETH_MAX_PACKET diff --git a/arch/um/os-Linux/helper.c b/arch/um/os-Linux/helper.c index cd15b9df5b5c..d13299cfa318 100644 --- a/arch/um/os-Linux/helper.c +++ b/arch/um/os-Linux/helper.c @@ -35,22 +35,23 @@ static int helper_child(void *arg) char **argv = data->argv; int errval; - if(helper_pause){ + if (helper_pause){ signal(SIGHUP, helper_hup); pause(); } - if(data->pre_exec != NULL) + if (data->pre_exec != NULL) (*data->pre_exec)(data->pre_data); execvp(argv[0], argv); errval = -errno; printk("helper_child - execve of '%s' failed - errno = %d\n", argv[0], errno); os_write_file(data->fd, &errval, sizeof(errval)); kill(os_getpid(), SIGKILL); - return(0); + return 0; } /* Returns either the pid of the child process we run or -E* on failure. - * XXX The alloc_stack here breaks if this is called in the tracing thread */ + * XXX The alloc_stack here breaks if this is called in the tracing thread, so + * we need to receive a preallocated stack (a local buffer is ok). */ int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv, unsigned long *stack_out) { @@ -58,20 +59,21 @@ int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv, unsigned long stack, sp; int pid, fds[2], ret, n; - if((stack_out != NULL) && (*stack_out != 0)) + if ((stack_out != NULL) && (*stack_out != 0)) stack = *stack_out; - else stack = alloc_stack(0, __cant_sleep()); - if(stack == 0) + else + stack = alloc_stack(0, __cant_sleep()); + if (stack == 0) return -ENOMEM; ret = os_pipe(fds, 1, 0); - if(ret < 0){ + if (ret < 0) { printk("run_helper : pipe failed, ret = %d\n", -ret); goto out_free; } ret = os_set_exec_close(fds[1], 1); - if(ret < 0){ + if (ret < 0) { printk("run_helper : setting FD_CLOEXEC failed, ret = %d\n", -ret); goto out_close; @@ -83,7 +85,7 @@ int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv, data.argv = argv; data.fd = fds[1]; pid = clone(helper_child, (void *) sp, CLONE_VM | SIGCHLD, &data); - if(pid < 0){ + if (pid < 0) { ret = -errno; printk("run_helper : clone failed, errno = %d\n", errno); goto out_close; @@ -95,10 +97,10 @@ int run_helper(void (*pre_exec)(void *), void *pre_data, char **argv, /* Read the errno value from the child, if the exec failed, or get 0 if * the exec succeeded because the pipe fd was set as close-on-exec. */ n = os_read_file(fds[0], &ret, sizeof(ret)); - if(n == 0) + if (n == 0) { ret = pid; - else { - if(n < 0){ + } else { + if (n < 0) { printk("run_helper : read on pipe failed, ret = %d\n", -n); ret = n; @@ -112,10 +114,9 @@ out_close: close(fds[1]); close(fds[0]); out_free: - if(stack_out == NULL) + if ((stack_out == NULL) || (*stack_out == 0)) free_stack(stack, 0); - else *stack_out = stack; - return(ret); + return ret; } int run_helper_thread(int (*proc)(void *), void *arg, unsigned int flags, @@ -125,31 +126,32 @@ int run_helper_thread(int (*proc)(void *), void *arg, unsigned int flags, int pid, status, err; stack = alloc_stack(stack_order, __cant_sleep()); - if(stack == 0) return(-ENOMEM); + if (stack == 0) + return -ENOMEM; sp = stack + (page_size() << stack_order) - sizeof(void *); pid = clone(proc, (void *) sp, flags | SIGCHLD, arg); - if(pid < 0){ + if (pid < 0) { err = -errno; printk("run_helper_thread : clone failed, errno = %d\n", errno); return err; } - if(stack_out == NULL){ + if (stack_out == NULL) { CATCH_EINTR(pid = waitpid(pid, &status, 0)); - if(pid < 0){ + if (pid < 0) { err = -errno; printk("run_helper_thread - wait failed, errno = %d\n", errno); pid = err; } - if(!WIFEXITED(status) || (WEXITSTATUS(status) != 0)) + if (!WIFEXITED(status) || (WEXITSTATUS(status) != 0)) printk("run_helper_thread - thread returned status " "0x%x\n", status); free_stack(stack, stack_order); - } - else *stack_out = stack; - return(pid); + } else + *stack_out = stack; + return pid; } int helper_wait(int pid) @@ -157,9 +159,9 @@ int helper_wait(int pid) int ret; CATCH_EINTR(ret = waitpid(pid, NULL, WNOHANG)); - if(ret < 0){ + if (ret < 0) { ret = -errno; printk("helper_wait : waitpid failed, errno = %d\n", errno); } - return(ret); + return ret; } diff --git a/arch/um/os-Linux/irq.c b/arch/um/os-Linux/irq.c index a97206df5b52..d46b818c1311 100644 --- a/arch/um/os-Linux/irq.c +++ b/arch/um/os-Linux/irq.c @@ -18,6 +18,7 @@ #include "sigio.h" #include "irq_user.h" #include "os.h" +#include "um_malloc.h" static struct pollfd *pollfds = NULL; static int pollfds_num = 0; diff --git a/arch/um/os-Linux/main.c b/arch/um/os-Linux/main.c index d1c5670787dc..685feaab65d2 100644 --- a/arch/um/os-Linux/main.c +++ b/arch/um/os-Linux/main.c @@ -23,6 +23,7 @@ #include "choose-mode.h" #include "uml-config.h" #include "os.h" +#include "um_malloc.h" /* Set in set_stklim, which is called from main and __wrap_malloc. * __wrap_malloc only calls it if main hasn't started. diff --git a/arch/um/os-Linux/sigio.c b/arch/um/os-Linux/sigio.c index f6457765b17d..925a65240cfe 100644 --- a/arch/um/os-Linux/sigio.c +++ b/arch/um/os-Linux/sigio.c @@ -19,6 +19,7 @@ #include "user_util.h" #include "sigio.h" #include "os.h" +#include "um_malloc.h" /* Protected by sigio_lock(), also used by sigio_cleanup, which is an * exitcall. diff --git a/arch/um/os-Linux/time.c b/arch/um/os-Linux/time.c index 38be096e750f..2115b8beb541 100644 --- a/arch/um/os-Linux/time.c +++ b/arch/um/os-Linux/time.c @@ -16,6 +16,7 @@ #include "process.h" #include "kern_constants.h" #include "os.h" +#include "uml-config.h" int set_interval(int is_virtual) { @@ -30,7 +31,7 @@ int set_interval(int is_virtual) return 0; } -#ifdef CONFIG_MODE_TT +#ifdef UML_CONFIG_MODE_TT void enable_timer(void) { set_interval(1); |