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-rw-r--r--arch/um/Makefile1
-rw-r--r--arch/um/Makefile-i3867
-rw-r--r--arch/um/Makefile-x86_643
-rw-r--r--arch/um/drivers/harddog_kern.c3
-rw-r--r--arch/um/drivers/mmapper_kern.c2
-rw-r--r--arch/um/drivers/random.c3
-rw-r--r--arch/um/include/init.h8
-rw-r--r--arch/um/include/irq_kern.h2
-rw-r--r--arch/um/include/irq_user.h2
-rw-r--r--arch/um/include/skas/skas.h1
-rw-r--r--arch/um/include/um_uaccess.h1
-rw-r--r--arch/um/kernel/irq.c35
-rw-r--r--arch/um/kernel/ksyms.c1
-rw-r--r--arch/um/kernel/mem.c33
-rw-r--r--arch/um/kernel/physmem.c2
-rw-r--r--arch/um/kernel/process.c2
-rw-r--r--arch/um/kernel/ptrace.c2
-rw-r--r--arch/um/kernel/smp.c3
-rw-r--r--arch/um/kernel/time.c8
-rw-r--r--arch/um/kernel/uaccess.c2
-rw-r--r--arch/um/os-Linux/sigio.c2
-rw-r--r--arch/um/os-Linux/signal.c2
-rw-r--r--arch/um/os-Linux/skas/process.c2
-rw-r--r--arch/um/os-Linux/umid.c2
-rw-r--r--arch/um/sys-i386/bugs.c2
-rw-r--r--arch/um/sys-i386/checksum.S5
-rw-r--r--arch/um/sys-i386/ldt.c4
27 files changed, 43 insertions, 97 deletions
diff --git a/arch/um/Makefile b/arch/um/Makefile
index dbeab15e7bb..ca40397017b 100644
--- a/arch/um/Makefile
+++ b/arch/um/Makefile
@@ -77,7 +77,6 @@ include $(srctree)/$(ARCH_DIR)/Makefile-os-$(OS)
KERNEL_DEFINES = $(strip -Derrno=kernel_errno -Dsigprocmask=kernel_sigprocmask \
-Dmktime=kernel_mktime $(ARCH_KERNEL_DEFINES))
KBUILD_CFLAGS += $(KERNEL_DEFINES)
-KBUILD_CFLAGS += $(call cc-option,-fno-unit-at-a-time,)
PHONY += linux
diff --git a/arch/um/Makefile-i386 b/arch/um/Makefile-i386
index 561e373bd85..302cbe50454 100644
--- a/arch/um/Makefile-i386
+++ b/arch/um/Makefile-i386
@@ -32,4 +32,11 @@ cflags-y += $(call cc-option,-mpreferred-stack-boundary=2)
# an unresolved reference.
cflags-y += -ffreestanding
+# Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
+# a lot more stack due to the lack of sharing of stacklots. Also, gcc
+# 4.3.0 needs -funit-at-a-time for extern inline functions.
+KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0400 ] ; then \
+ echo $(call cc-option,-fno-unit-at-a-time); \
+ else echo $(call cc-option,-funit-at-a-time); fi ;)
+
KBUILD_CFLAGS += $(cflags-y)
diff --git a/arch/um/Makefile-x86_64 b/arch/um/Makefile-x86_64
index 8ed362f9358..a9cd7e77a7a 100644
--- a/arch/um/Makefile-x86_64
+++ b/arch/um/Makefile-x86_64
@@ -21,3 +21,6 @@ HEADER_ARCH := x86
LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib64
LINK-y += -m64
+
+# Do unit-at-a-time unconditionally on x86_64, following the host
+KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)
diff --git a/arch/um/drivers/harddog_kern.c b/arch/um/drivers/harddog_kern.c
index a9ad4bd6d95..d332503fa1b 100644
--- a/arch/um/drivers/harddog_kern.c
+++ b/arch/um/drivers/harddog_kern.c
@@ -66,6 +66,7 @@ static int harddog_open(struct inode *inode, struct file *file)
int err = -EBUSY;
char *sock = NULL;
+ lock_kernel();
spin_lock(&lock);
if(timer_alive)
goto err;
@@ -82,9 +83,11 @@ static int harddog_open(struct inode *inode, struct file *file)
timer_alive = 1;
spin_unlock(&lock);
+ unlock_kernel();
return nonseekable_open(inode, file);
err:
spin_unlock(&lock);
+ unlock_kernel();
return err;
}
diff --git a/arch/um/drivers/mmapper_kern.c b/arch/um/drivers/mmapper_kern.c
index 67b2f55a602..eb240323c40 100644
--- a/arch/um/drivers/mmapper_kern.c
+++ b/arch/um/drivers/mmapper_kern.c
@@ -16,6 +16,7 @@
#include <linux/miscdevice.h>
#include <linux/module.h>
#include <linux/mm.h>
+#include <linux/smp_lock.h>
#include <asm/uaccess.h>
#include "mem_user.h"
@@ -77,6 +78,7 @@ out:
static int mmapper_open(struct inode *inode, struct file *file)
{
+ cycle_kernel_lock();
return 0;
}
diff --git a/arch/um/drivers/random.c b/arch/um/drivers/random.c
index 4949044773b..6eabb7022a2 100644
--- a/arch/um/drivers/random.c
+++ b/arch/um/drivers/random.c
@@ -7,6 +7,7 @@
* of the GNU General Public License, incorporated herein by reference.
*/
#include <linux/sched.h>
+#include <linux/smp_lock.h>
#include <linux/module.h>
#include <linux/fs.h>
#include <linux/interrupt.h>
@@ -33,6 +34,8 @@ static DECLARE_WAIT_QUEUE_HEAD(host_read_wait);
static int rng_dev_open (struct inode *inode, struct file *filp)
{
+ cycle_kernel_lock();
+
/* enforce read-only access to this chrdev */
if ((filp->f_mode & FMODE_READ) == 0)
return -EINVAL;
diff --git a/arch/um/include/init.h b/arch/um/include/init.h
index b00a95741d4..37dd097c16c 100644
--- a/arch/um/include/init.h
+++ b/arch/um/include/init.h
@@ -45,6 +45,8 @@ typedef void (*exitcall_t)(void);
# define __section(S) __attribute__ ((__section__(#S)))
#endif
+#if __GNUC__ == 3
+
#if __GNUC_MINOR__ >= 3
# define __used __attribute__((__used__))
#else
@@ -52,6 +54,12 @@ typedef void (*exitcall_t)(void);
#endif
#else
+#if __GNUC__ == 4
+# define __used __attribute__((__used__))
+#endif
+#endif
+
+#else
#include <linux/compiler.h>
#endif
/* These are for everybody (although not all archs will actually
diff --git a/arch/um/include/irq_kern.h b/arch/um/include/irq_kern.h
index 4f775597fd5..fba3895274f 100644
--- a/arch/um/include/irq_kern.h
+++ b/arch/um/include/irq_kern.h
@@ -13,8 +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);
-extern int init_aio_irq(int irq, char *name,
- irq_handler_t handler);
#endif
diff --git a/arch/um/include/irq_user.h b/arch/um/include/irq_user.h
index e60b31873de..c6c784df267 100644
--- a/arch/um/include/irq_user.h
+++ b/arch/um/include/irq_user.h
@@ -21,8 +21,6 @@ struct irq_fd {
enum { IRQ_READ, IRQ_WRITE };
extern void sigio_handler(int sig, struct uml_pt_regs *regs);
-extern int activate_fd(int irq, int fd, int type, void *dev_id);
-extern void free_irq_by_irq_and_dev(unsigned int irq, void *dev_id);
extern void free_irq_by_fd(int fd);
extern void reactivate_fd(int fd, int irqnum);
extern void deactivate_fd(int fd, int irqnum);
diff --git a/arch/um/include/skas/skas.h b/arch/um/include/skas/skas.h
index b073f8a86bd..64d2c744330 100644
--- a/arch/um/include/skas/skas.h
+++ b/arch/um/include/skas/skas.h
@@ -16,7 +16,6 @@ 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 int new_mm(unsigned long stack);
-extern void get_skas_faultinfo(int pid, struct faultinfo * fi);
extern long execute_syscall_skas(void *r);
extern unsigned long current_stub_stack(void);
diff --git a/arch/um/include/um_uaccess.h b/arch/um/include/um_uaccess.h
index 2b6fc8e0f07..45c04999d67 100644
--- a/arch/um/include/um_uaccess.h
+++ b/arch/um/include/um_uaccess.h
@@ -34,7 +34,6 @@ extern int copy_to_user(void __user *to, const void *from, int n);
extern int __do_copy_to_user(void *to, const void *from, int n,
void **fault_addr, jmp_buf **fault_catcher);
-extern void __do_copy(void *to, const void *from, int n);
/*
* strncpy_from_user: - Copy a NUL terminated string from userspace.
diff --git a/arch/um/kernel/irq.c b/arch/um/kernel/irq.c
index 91587f8db34..3d7aad09b17 100644
--- a/arch/um/kernel/irq.c
+++ b/arch/um/kernel/irq.c
@@ -102,7 +102,7 @@ void sigio_handler(int sig, struct uml_pt_regs *regs)
static DEFINE_SPINLOCK(irq_lock);
-int activate_fd(int irq, int fd, int type, void *dev_id)
+static int activate_fd(int irq, int fd, int type, void *dev_id)
{
struct pollfd *tmp_pfd;
struct irq_fd *new_fd, *irq_fd;
@@ -216,7 +216,7 @@ static int same_irq_and_dev(struct irq_fd *irq, void *d)
return ((irq->irq == data->irq) && (irq->id == data->dev));
}
-void free_irq_by_irq_and_dev(unsigned int irq, void *dev)
+static void free_irq_by_irq_and_dev(unsigned int irq, void *dev)
{
struct irq_and_dev data = ((struct irq_and_dev) { .irq = irq,
.dev = dev });
@@ -403,37 +403,6 @@ void __init init_IRQ(void)
}
}
-int init_aio_irq(int irq, char *name, irq_handler_t handler)
-{
- int fds[2], err;
-
- err = os_pipe(fds, 1, 1);
- if (err) {
- printk(KERN_ERR "init_aio_irq - os_pipe failed, err = %d\n",
- -err);
- goto out;
- }
-
- err = um_request_irq(irq, fds[0], IRQ_READ, handler,
- IRQF_DISABLED | IRQF_SAMPLE_RANDOM, name,
- (void *) (long) fds[0]);
- if (err) {
- printk(KERN_ERR "init_aio_irq - : um_request_irq failed, "
- "err = %d\n",
- err);
- goto out_close;
- }
-
- err = fds[1];
- goto out;
-
- out_close:
- os_close_file(fds[0]);
- os_close_file(fds[1]);
- out:
- return err;
-}
-
/*
* IRQ stack entry and exit:
*
diff --git a/arch/um/kernel/ksyms.c b/arch/um/kernel/ksyms.c
index ccc02a616c2..836fc9b9470 100644
--- a/arch/um/kernel/ksyms.c
+++ b/arch/um/kernel/ksyms.c
@@ -18,7 +18,6 @@ EXPORT_SYMBOL(get_signals);
EXPORT_SYMBOL(kernel_thread);
EXPORT_SYMBOL(sys_waitpid);
EXPORT_SYMBOL(flush_tlb_range);
-EXPORT_SYMBOL(arch_validate);
EXPORT_SYMBOL(high_physmem);
EXPORT_SYMBOL(empty_zero_page);
diff --git a/arch/um/kernel/mem.c b/arch/um/kernel/mem.c
index b0ee64622ff..e2274ef3155 100644
--- a/arch/um/kernel/mem.c
+++ b/arch/um/kernel/mem.c
@@ -21,7 +21,7 @@
/* allocated in paging_init, zeroed in mem_init, and unchanged thereafter */
unsigned long *empty_zero_page = NULL;
/* allocated in paging_init and unchanged thereafter */
-unsigned long *empty_bad_page = NULL;
+static unsigned long *empty_bad_page = NULL;
/*
* Initialized during boot, and readonly for initializing page tables
@@ -240,37 +240,6 @@ void __init paging_init(void)
#endif
}
-struct page *arch_validate(struct page *page, gfp_t mask, int order)
-{
- unsigned long addr, zero = 0;
- int i;
-
- again:
- if (page == NULL)
- return page;
- if (PageHighMem(page))
- return page;
-
- addr = (unsigned long) page_address(page);
- for (i = 0; i < (1 << order); i++) {
- current->thread.fault_addr = (void *) addr;
- if (__do_copy_to_user((void __user *) addr, &zero,
- sizeof(zero),
- &current->thread.fault_addr,
- &current->thread.fault_catcher)) {
- if (!(mask & __GFP_WAIT))
- return NULL;
- else break;
- }
- addr += PAGE_SIZE;
- }
-
- if (i == (1 << order))
- return page;
- page = alloc_pages(mask, order);
- goto again;
-}
-
/*
* This can't do anything because nothing in the kernel image can be freed
* since it's not in kernel physical memory.
diff --git a/arch/um/kernel/physmem.c b/arch/um/kernel/physmem.c
index 9757085a022..a1a9090254c 100644
--- a/arch/um/kernel/physmem.c
+++ b/arch/um/kernel/physmem.c
@@ -185,7 +185,7 @@ unsigned long find_iomem(char *driver, unsigned long *len_out)
return 0;
}
-int setup_iomem(void)
+static int setup_iomem(void)
{
struct iomem_region *region = iomem_regions;
unsigned long iomem_start = high_physmem + PAGE_SIZE;
diff --git a/arch/um/kernel/process.c b/arch/um/kernel/process.c
index 83603cfbde8..a1c6d07cac3 100644
--- a/arch/um/kernel/process.c
+++ b/arch/um/kernel/process.c
@@ -243,7 +243,7 @@ void default_idle(void)
if (need_resched())
schedule();
- tick_nohz_stop_sched_tick();
+ tick_nohz_stop_sched_tick(1);
nsecs = disable_timer();
idle_sleep(nsecs);
tick_nohz_restart_sched_tick();
diff --git a/arch/um/kernel/ptrace.c b/arch/um/kernel/ptrace.c
index 47b57b497d5..15e8b7c4de1 100644
--- a/arch/um/kernel/ptrace.c
+++ b/arch/um/kernel/ptrace.c
@@ -225,7 +225,7 @@ long arch_ptrace(struct task_struct *child, long request, long addr, long data)
return ret;
}
-void send_sigtrap(struct task_struct *tsk, struct uml_pt_regs *regs,
+static void send_sigtrap(struct task_struct *tsk, struct uml_pt_regs *regs,
int error_code)
{
struct siginfo info;
diff --git a/arch/um/kernel/smp.c b/arch/um/kernel/smp.c
index e1062ec36d4..be2d50c3aa9 100644
--- a/arch/um/kernel/smp.c
+++ b/arch/um/kernel/smp.c
@@ -214,8 +214,7 @@ void smp_call_function_slave(int cpu)
atomic_inc(&scf_finished);
}
-int smp_call_function(void (*_func)(void *info), void *_info, int nonatomic,
- int wait)
+int smp_call_function(void (*_func)(void *info), void *_info, int wait)
{
int cpus = num_online_cpus() - 1;
int i;
diff --git a/arch/um/kernel/time.c b/arch/um/kernel/time.c
index c3e2f369c33..47f04f4a346 100644
--- a/arch/um/kernel/time.c
+++ b/arch/um/kernel/time.c
@@ -13,14 +13,6 @@
#include "kern_util.h"
#include "os.h"
-/*
- * Scheduler clock - returns current time in nanosec units.
- */
-unsigned long long sched_clock(void)
-{
- return (unsigned long long)jiffies_64 * (NSEC_PER_SEC / HZ);
-}
-
void timer_handler(int sig, struct uml_pt_regs *regs)
{
unsigned long flags;
diff --git a/arch/um/kernel/uaccess.c b/arch/um/kernel/uaccess.c
index f0f4b040d7c..dd33f040c52 100644
--- a/arch/um/kernel/uaccess.c
+++ b/arch/um/kernel/uaccess.c
@@ -12,7 +12,7 @@
#include <linux/string.h>
#include "os.h"
-void __do_copy(void *to, const void *from, int n)
+static void __do_copy(void *to, const void *from, int n)
{
memcpy(to, from, n);
}
diff --git a/arch/um/os-Linux/sigio.c b/arch/um/os-Linux/sigio.c
index eb8f2e4be19..63d299df152 100644
--- a/arch/um/os-Linux/sigio.c
+++ b/arch/um/os-Linux/sigio.c
@@ -530,7 +530,7 @@ static void tty_close(int master, int slave)
printk(UM_KERN_CONT "No, enabling workaround\n");
}
-void __init check_sigio(void)
+static void __init check_sigio(void)
{
if ((access("/dev/ptmx", R_OK) < 0) &&
(access("/dev/ptyp0", R_OK) < 0)) {
diff --git a/arch/um/os-Linux/signal.c b/arch/um/os-Linux/signal.c
index 5aade6027e4..6ae180703a6 100644
--- a/arch/um/os-Linux/signal.c
+++ b/arch/um/os-Linux/signal.c
@@ -126,7 +126,7 @@ void set_sigstack(void *sig_stack, int size)
panic("enabling signal stack failed, errno = %d\n", errno);
}
-void (*handlers[_NSIG])(int sig, struct sigcontext *sc);
+static void (*handlers[_NSIG])(int sig, struct sigcontext *sc);
void handle_signal(int sig, struct sigcontext *sc)
{
diff --git a/arch/um/os-Linux/skas/process.c b/arch/um/os-Linux/skas/process.c
index 172ad8f72e1..d6e0a2234b8 100644
--- a/arch/um/os-Linux/skas/process.c
+++ b/arch/um/os-Linux/skas/process.c
@@ -96,7 +96,7 @@ bad_wait:
extern unsigned long current_stub_stack(void);
-void get_skas_faultinfo(int pid, struct faultinfo * fi)
+static void get_skas_faultinfo(int pid, struct faultinfo *fi)
{
int err;
diff --git a/arch/um/os-Linux/umid.c b/arch/um/os-Linux/umid.c
index 106fa864155..a27defb8188 100644
--- a/arch/um/os-Linux/umid.c
+++ b/arch/um/os-Linux/umid.c
@@ -245,7 +245,7 @@ int __init set_umid(char *name)
/* Changed in make_umid, which is called during early boot */
static int umid_setup = 0;
-int __init make_umid(void)
+static int __init make_umid(void)
{
int fd, err;
char tmp[256];
diff --git a/arch/um/sys-i386/bugs.c b/arch/um/sys-i386/bugs.c
index a74442d1376..2c6d0d731c1 100644
--- a/arch/um/sys-i386/bugs.c
+++ b/arch/um/sys-i386/bugs.c
@@ -12,7 +12,7 @@
#include "sysdep/ptrace.h"
/* Set during early boot */
-int host_has_cmov = 1;
+static int host_has_cmov = 1;
static jmp_buf cmov_test_return;
static void cmov_sigill_test_handler(int sig)
diff --git a/arch/um/sys-i386/checksum.S b/arch/um/sys-i386/checksum.S
index 62c7e564f22..f058d2f82e1 100644
--- a/arch/um/sys-i386/checksum.S
+++ b/arch/um/sys-i386/checksum.S
@@ -243,13 +243,12 @@ unsigned int csum_partial_copy_generic (const char *src, char *dst,
.previous
.align 4
-.globl csum_partial_copy_generic_i386
-
+
#ifndef CONFIG_X86_USE_PPRO_CHECKSUM
#define ARGBASE 16
#define FP 12
-
+
csum_partial_copy_generic_i386:
subl $4,%esp
pushl %edi
diff --git a/arch/um/sys-i386/ldt.c b/arch/um/sys-i386/ldt.c
index a34263e6b08..a4846a84a7b 100644
--- a/arch/um/sys-i386/ldt.c
+++ b/arch/um/sys-i386/ldt.c
@@ -14,8 +14,8 @@
extern int modify_ldt(int func, void *ptr, unsigned long bytecount);
-long write_ldt_entry(struct mm_id * mm_idp, int func, struct user_desc * desc,
- void **addr, int done)
+static long write_ldt_entry(struct mm_id *mm_idp, int func,
+ struct user_desc *desc, void **addr, int done)
{
long res;
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-27 00:29:52 +0000