From: Pavel Machek <pavel@ucw.cz>
To: kernel list <linux-kernel@vger.kernel.org>
Subject: swsusp for 2.5.47 [not for inclusion]
Date: Tue, 12 Nov 2002 22:51:59 +0100 [thread overview]
Message-ID: <20021112215159.GA141@elf.ucw.cz> (raw)
Hi!
This is patch I'm using. With this swsusp in 2.5.47 should work.
Pavel
--- clean/arch/i386/kernel/Makefile 2002-11-12 18:40:26.000000000 +0100
+++ linux-swsusp/arch/i386/kernel/Makefile 2002-11-12 22:22:53.000000000 +0100
@@ -24,7 +24,7 @@
obj-$(CONFIG_X86_MPPARSE) += mpparse.o
obj-$(CONFIG_X86_LOCAL_APIC) += apic.o nmi.o
obj-$(CONFIG_X86_IO_APIC) += io_apic.o
-obj-$(CONFIG_SOFTWARE_SUSPEND) += suspend.o
+obj-$(CONFIG_SOFTWARE_SUSPEND) += suspend.o suspend_asm.o
obj-$(CONFIG_X86_NUMAQ) += numaq.o
obj-$(CONFIG_PROFILING) += profile.o
obj-$(CONFIG_EDD) += edd.o
--- clean/arch/i386/kernel/acpi.c 2002-09-22 23:46:52.000000000 +0200
+++ linux-swsusp/arch/i386/kernel/acpi.c 2002-11-02 19:10:07.000000000 +0100
@@ -542,6 +542,7 @@
*/
void acpi_restore_state_mem (void)
{
+ printk(KERN_CRIT "acpi_restore_state_mem() called\n");
acpi_restore_pmd();
}
--- clean/arch/i386/kernel/acpi_wakeup.S 2002-06-03 11:43:27.000000000 +0200
+++ linux-swsusp/arch/i386/kernel/acpi_wakeup.S 2002-11-12 18:27:42.000000000 +0100
@@ -29,9 +29,12 @@
movl real_magic - wakeup_data, %eax
cmpl $0x12345678, %eax
jne bogus_real_magic
-
+#if 0
+ lcall $0xc000,$3
+ jmp bogus_real_magic
mov video_mode - wakeup_data, %ax
call mode_set
+#endif
# set up page table
movl (real_save_cr3 - wakeup_data), %eax
@@ -129,7 +132,7 @@
.code32
ALIGN
-.org 0x300
+.org 0x1000
wakeup_data:
.word 0
real_save_gdt: .word 0
@@ -140,9 +143,11 @@
real_magic: .long 0
video_mode: .long 0
-.org 0x500
+.org 0x2000
wakeup_stack:
+.org 0x3000
wakeup_end:
+.org 0x4000
wakeup_pmode_return:
movl $__KERNEL_DS, %eax
@@ -262,6 +267,48 @@
ENTRY(saved_magic) .long 0
+ENTRY(do_suspend_lowlevel)
+ cmpl $0,4(%esp)
+ jne .L1432
+ call save_processor_state
+
+ movl %esp, saved_context_esp
+ movl %eax, saved_context_eax
+ movl %ebx, saved_context_ebx
+ movl %ecx, saved_context_ecx
+ movl %edx, saved_context_edx
+ movl %ebp, saved_context_ebp
+ movl %esi, saved_context_esi
+ movl %edi, saved_context_edi
+ pushfl ; popl saved_context_eflags
+
+ movl $.L1432,saved_eip
+ movl %esp,saved_esp
+ movl %ebp,saved_ebp
+ movl %ebx,saved_ebx
+ movl %edi,saved_edi
+ movl %esi,saved_esi
+
+ pushl $3
+ call acpi_enter_sleep_state
+ addl $4,%esp
+ ret
+ .p2align 4,,7
+.L1432:
+ movl $104,%eax
+ movw %eax, %ds
+ movl saved_context_esp, %esp
+ movl saved_context_ebp, %ebp
+ movl saved_context_eax, %eax
+ movl saved_context_ebx, %ebx
+ movl saved_context_ecx, %ecx
+ movl saved_context_edx, %edx
+ movl saved_context_esi, %esi
+ movl saved_context_edi, %edi
+ call restore_processor_state
+ pushl saved_context_eflags ; popfl
+ ret
+
ALIGN
# saved registers
saved_gdt: .long 0,0
--- clean/arch/i386/kernel/head.S 2002-10-14 18:18:30.000000000 +0200
+++ linux-swsusp/arch/i386/kernel/head.S 2002-11-02 22:36:58.000000000 +0100
@@ -1,5 +1,5 @@
/*
- * linux/arch/i386/head.S -- the 32-bit startup code.
+ * linux/arch/i386/kernel/head.S -- the 32-bit startup code.
*
* Copyright (C) 1991, 1992 Linus Torvalds
*
--- clean/arch/i386/kernel/suspend.c 2002-11-01 00:37:05.000000000 +0100
+++ linux-swsusp/arch/i386/kernel/suspend.c 2002-11-12 18:12:40.000000000 +0100
@@ -28,26 +28,11 @@
#include <asm/tlbflush.h>
static struct saved_context saved_context;
+unsigned long saved_context_eax, saved_context_ebx, saved_context_ecx, saved_context_edx;
+unsigned long saved_context_esp, saved_context_ebp, saved_context_esi, saved_context_edi;
+unsigned long saved_context_eflags;
-/*
- * save_processor_context
- *
- * Save the state of the processor before we go to sleep.
- *
- * return_stack is the value of the stack pointer (%esp) as the caller sees it.
- * A good way could not be found to obtain it from here (don't want to make _too_
- * many assumptions about the layout of the stack this far down.) Also, the
- * handy little __builtin_frame_pointer(level) where level > 0, is blatantly
- * buggy - it returns the value of the stack at the proper location, not the
- * location, like it should (as of gcc 2.91.66)
- *
- * Note that the context and timing of this function is pretty critical.
- * With a minimal amount of things going on in the caller and in here, gcc
- * does a good job of being just a dumb compiler. Watch the assembly output
- * if anything changes, though, and make sure everything is going in the right
- * place.
- */
-static inline void save_processor_context (void)
+void save_processor_state(void)
{
kernel_fpu_begin();
@@ -60,23 +45,6 @@
asm volatile ("str %0" : "=m" (saved_context.tr));
/*
- * save the general registers.
- * note that gcc has constructs to specify output of certain registers,
- * but they're not used here, because it assumes that you want to modify
- * those registers, so it tries to be smart and save them beforehand.
- * It's really not necessary, and kinda fishy (check the assembly output),
- * so it's avoided.
- */
- asm volatile ("movl %%esp, %0" : "=m" (saved_context.esp));
- asm volatile ("movl %%eax, %0" : "=m" (saved_context.eax));
- asm volatile ("movl %%ebx, %0" : "=m" (saved_context.ebx));
- asm volatile ("movl %%ecx, %0" : "=m" (saved_context.ecx));
- asm volatile ("movl %%edx, %0" : "=m" (saved_context.edx));
- asm volatile ("movl %%ebp, %0" : "=m" (saved_context.ebp));
- asm volatile ("movl %%esi, %0" : "=m" (saved_context.esi));
- asm volatile ("movl %%edi, %0" : "=m" (saved_context.edi));
- /* FIXME: Need to save XMM0..XMM15? */
- /*
* segment registers
*/
asm volatile ("movw %%es, %0" : "=m" (saved_context.es));
@@ -91,11 +59,6 @@
asm volatile ("movl %%cr2, %0" : "=r" (saved_context.cr2));
asm volatile ("movl %%cr3, %0" : "=r" (saved_context.cr3));
asm volatile ("movl %%cr4, %0" : "=r" (saved_context.cr4));
-
- /*
- * eflags
- */
- asm volatile ("pushfl ; popl %0" : "=m" (saved_context.eflags));
}
static void
@@ -106,26 +69,8 @@
kernel_fpu_end();
}
-/*
- * restore_processor_context
- *
- * Restore the processor context as it was before we went to sleep
- * - descriptor tables
- * - control registers
- * - segment registers
- * - flags
- *
- * Note that it is critical that this function is declared inline.
- * It was separated out from restore_state to make that function
- * a little clearer, but it needs to be inlined because we won't have a
- * stack when we get here (so we can't push a return address).
- */
-static inline void restore_processor_context (void)
+void restore_processor_state(void)
{
- /*
- * first restore %ds, so we can access our data properly
- */
- asm volatile ("movw %0, %%ds" :: "r" (__KERNEL_DS));
/*
* control registers
@@ -144,24 +89,6 @@
asm volatile ("movw %0, %%ss" :: "r" (saved_context.ss));
/*
- * the other general registers
- *
- * note that even though gcc has constructs to specify memory
- * input into certain registers, it will try to be too smart
- * and save them at the beginning of the function. This is esp.
- * bad since we don't have a stack set up when we enter, and we
- * want to preserve the values on exit. So, we set them manually.
- */
- asm volatile ("movl %0, %%esp" :: "m" (saved_context.esp));
- asm volatile ("movl %0, %%ebp" :: "m" (saved_context.ebp));
- asm volatile ("movl %0, %%eax" :: "m" (saved_context.eax));
- asm volatile ("movl %0, %%ebx" :: "m" (saved_context.ebx));
- asm volatile ("movl %0, %%ecx" :: "m" (saved_context.ecx));
- asm volatile ("movl %0, %%edx" :: "m" (saved_context.edx));
- asm volatile ("movl %0, %%esi" :: "m" (saved_context.esi));
- asm volatile ("movl %0, %%edi" :: "m" (saved_context.edi));
-
- /*
* now restore the descriptor tables to their proper values
* ltr is done i fix_processor_context().
*/
@@ -170,42 +97,15 @@
asm volatile ("lldt %0" :: "m" (saved_context.ldt));
fix_processor_context();
-
- /*
- * the flags
- */
- asm volatile ("pushl %0 ; popfl" :: "m" (saved_context.eflags));
-
do_fpu_end();
}
-#ifdef CONFIG_ACPI_SLEEP
-void do_suspend_lowlevel(int resume)
-{
-/*
- * FIXME: This function should really be written in assembly. Actually
- * requirement is that it does not touch stack, because %esp will be
- * wrong during resume before restore_processor_context(). Check
- * assembly if you modify this.
- */
- if (!resume) {
- save_processor_context();
- acpi_save_register_state((unsigned long)&&acpi_sleep_done);
- acpi_enter_sleep_state(3);
- return;
- }
-acpi_sleep_done:
- acpi_restore_register_state();
- restore_processor_context();
-}
-#endif
-
void fix_processor_context(void)
{
int cpu = smp_processor_id();
struct tss_struct * t = init_tss + cpu;
- set_tss_desc(cpu,t); /* This just modifies memory; should not be neccessary. But... This is neccessary, because 386 hardware has concept of busy tsc or some similar stupidity. */
+ set_tss_desc(cpu,t); /* This just modifies memory; should not be neccessary. But... This is neccessary, because 386 hardware has concept of busy TSS or some similar stupidity. */
cpu_gdt_table[cpu][GDT_ENTRY_TSS].b &= 0xfffffdff;
load_TR_desc(); /* This does ltr */
@@ -226,77 +126,9 @@
}
-
#ifdef CONFIG_SOFTWARE_SUSPEND
/* Local variables for do_magic */
-static int loop __nosavedata = 0;
-static int loop2 __nosavedata = 0;
-
-/*
- * (KG): Since we affect stack here, we make this function as flat and easy
- * as possible in order to not provoke gcc to use local variables on the stack.
- * Note that on resume, all (expect nosave) variables will have the state from
- * the time of writing (suspend_save_image) and the registers (including the
- * stack pointer, but excluding the instruction pointer) will be loaded with
- * the values saved at save_processor_context() time.
- */
-void do_magic(int resume)
-{
- /* DANGER WILL ROBINSON!
- *
- * If this function is too difficult for gcc to optimize, it will crash and burn!
- * see above.
- *
- * DO NOT TOUCH.
- */
-
- if (!resume) {
- do_magic_suspend_1();
- save_processor_context(); /* We need to capture registers and memory at "same time" */
- do_magic_suspend_2(); /* If everything goes okay, this function does not return */
- return;
- }
+int loop __nosavedata = 0;
+int loop2 __nosavedata = 0;
- /* We want to run from swapper_pg_dir, since swapper_pg_dir is stored in constant
- * place in memory
- */
-
- __asm__( "movl %%ecx,%%cr3\n" ::"c"(__pa(swapper_pg_dir)));
-
-/*
- * Final function for resuming: after copying the pages to their original
- * position, it restores the register state.
- *
- * What about page tables? Writing data pages may toggle
- * accessed/dirty bits in our page tables. That should be no problems
- * with 4MB page tables. That's why we require have_pse.
- *
- * This loops destroys stack from under itself, so it better should
- * not use any stack space, itself. When this function is entered at
- * resume time, we move stack to _old_ place. This is means that this
- * function must use no stack and no local variables in registers,
- * until calling restore_processor_context();
- *
- * Critical section here: noone should touch saved memory after
- * do_magic_resume_1; copying works, because nr_copy_pages,
- * pagedir_nosave, loop and loop2 are nosavedata.
- */
- do_magic_resume_1();
-
- for (loop=0; loop < nr_copy_pages; loop++) {
- /* You may not call something (like copy_page) here: see above */
- for (loop2=0; loop2 < PAGE_SIZE; loop2++) {
- *(((char *)((pagedir_nosave+loop)->orig_address))+loop2) =
- *(((char *)((pagedir_nosave+loop)->address))+loop2);
- __flush_tlb();
- }
- }
-
- restore_processor_context();
-
-/* Ahah, we now run with our old stack, and with registers copied from
- suspend time */
-
- do_magic_resume_2();
-}
#endif
--- clean/arch/i386/kernel/suspend_asm.S 2002-11-07 18:26:08.000000000 +0100
+++ linux-swsusp/arch/i386/kernel/suspend_asm.S 2002-11-12 18:24:13.000000000 +0100
@@ -0,0 +1,80 @@
+.text
+#include <linux/linkage.h>
+#include <asm/segment.h>
+#include <asm/page.h>
+
+ENTRY(do_magic):
+ pushl %ebx
+ cmpl $0,8(%esp)
+ jne .L1450
+ call do_magic_suspend_1
+ call save_processor_state
+
+ movl %esp, saved_context_esp
+ movl %eax, saved_context_eax
+ movl %ebx, saved_context_ebx
+ movl %ecx, saved_context_ecx
+ movl %edx, saved_context_edx
+ movl %ebp, saved_context_ebp
+ movl %esi, saved_context_esi
+ movl %edi, saved_context_edi
+ pushfl ; popl saved_context_eflags
+
+ call do_magic_suspend_2
+ jmp .L1449
+ .p2align 4,,7
+.L1450:
+ movl $swapper_pg_dir-__PAGE_OFFSET,%ecx
+ movl %ecx,%cr3
+
+ call do_magic_resume_1
+ movl $0,loop
+ cmpl $0,nr_copy_pages
+ je .L1453
+ .p2align 4,,7
+.L1455:
+ movl $0,loop2
+ .p2align 4,,7
+.L1459:
+ movl pagedir_nosave,%ecx
+ movl loop,%eax
+ movl loop2,%edx
+ sall $4,%eax
+ movl 4(%ecx,%eax),%ebx
+ movl (%ecx,%eax),%eax
+ movb (%edx,%eax),%al
+ movb %al,(%edx,%ebx)
+ movl %cr3, %eax;
+ movl %eax, %cr3; # flush TLB
+
+ movl loop2,%eax
+ leal 1(%eax),%edx
+ movl %edx,loop2
+ movl %edx,%eax
+ cmpl $4095,%eax
+ jbe .L1459
+ movl loop,%eax
+ leal 1(%eax),%edx
+ movl %edx,loop
+ movl %edx,%eax
+ cmpl nr_copy_pages,%eax
+ jb .L1455
+ .p2align 4,,7
+.L1453:
+ movl $104,%eax
+
+ movw %eax, %ds
+ movl saved_context_esp, %esp
+ movl saved_context_ebp, %ebp
+ movl saved_context_eax, %eax
+ movl saved_context_ebx, %ebx
+ movl saved_context_ecx, %ecx
+ movl saved_context_edx, %edx
+ movl saved_context_esi, %esi
+ movl saved_context_edi, %edi
+ call restore_processor_state
+ pushl saved_context_eflags ; popfl
+ call do_magic_resume_2
+.L1449:
+ popl %ebx
+ ret
--- clean/arch/i386/kernel/traps.c 2002-11-12 18:40:26.000000000 +0100
+++ linux-swsusp/arch/i386/kernel/traps.c 2002-11-12 22:22:54.000000000 +0100
@@ -210,6 +210,7 @@
ss = regs->xss & 0xffff;
}
print_modules();
+ mdelay(1000);
printk("CPU: %d\nEIP: %04x:[<%08lx>] %s\nEFLAGS: %08lx\n",
smp_processor_id(), 0xffff & regs->xcs, regs->eip, print_tainted(), regs->eflags);
@@ -222,6 +223,7 @@
regs->xds & 0xffff, regs->xes & 0xffff, ss);
printk("Process %s (pid: %d, threadinfo=%p task=%p)",
current->comm, current->pid, current_thread_info(), current);
+ mdelay(4000);
/*
* When in-kernel, we also print out the stack and code at the
* time of the fault..
--- clean/drivers/ide/ide-disk.c 2002-11-12 18:40:35.000000000 +0100
+++ linux-swsusp/drivers/ide/ide-disk.c 2002-11-12 22:23:02.000000000 +0100
@@ -1412,24 +1412,6 @@
return call_idedisk_standby(drive, 0);
}
-static int call_idedisk_suspend (ide_drive_t *drive, int arg)
-{
- ide_task_t args;
- u8 suspend = (arg) ? WIN_SLEEPNOW2 : WIN_SLEEPNOW1;
- memset(&args, 0, sizeof(ide_task_t));
- args.tfRegister[IDE_COMMAND_OFFSET] = suspend;
- args.command_type = ide_cmd_type_parser(&args);
- return ide_raw_taskfile(drive, &args, NULL);
-}
-
-static int do_idedisk_suspend (ide_drive_t *drive)
-{
- if (drive->suspend_reset)
- return 1;
-
- return call_idedisk_suspend(drive, 0);
-}
-
#if 0
static int call_idedisk_checkpower (ide_drive_t *drive, int arg)
{
@@ -1456,13 +1438,6 @@
}
#endif
-static int do_idedisk_resume (ide_drive_t *drive)
-{
- if (!drive->suspend_reset)
- return 1;
- return 0;
-}
-
static int do_idedisk_flushcache (ide_drive_t *drive)
{
ide_task_t args;
@@ -1561,6 +1536,53 @@
#endif
}
+static int idedisk_suspend(struct device *dev, u32 state, u32 level)
+{
+ ide_drive_t *drive = dev->driver_data;
+
+ printk("Suspending device %p\n", dev->driver_data);
+
+ /* I hope that every freeze operation from the upper levels have
+ * already been done...
+ */
+
+ if (level != SUSPEND_SAVE_STATE)
+ return 0;
+ BUG_ON(in_interrupt());
+
+ printk("Waiting for commands to finish\n");
+
+ /* wait until all commands are finished */
+ /* FIXME: waiting for spinlocks should be done instead. */
+ if (!(HWGROUP(drive)))
+ printk("No hwgroup?\n");
+ while (HWGROUP(drive)->handler)
+ yield();
+
+ /* set the drive to standby */
+ printk(KERN_INFO "suspending: %s ", drive->name);
+ do_idedisk_standby(drive);
+ drive->blocked = 1;
+
+ while (HWGROUP(drive)->handler)
+ yield();
+
+ return 0;
+}
+
+static int idedisk_resume(struct device *dev, u32 level)
+{
+ ide_drive_t *drive = dev->driver_data;
+
+ if (level != RESUME_RESTORE_STATE)
+ return 0;
+ if (!drive->blocked)
+ panic("ide: Resume but not suspended?\n");
+
+ drive->blocked = 0;
+ return 0;
+}
+
static void idedisk_setup (ide_drive_t *drive)
{
struct hd_driveid *id = drive->id;
@@ -1671,6 +1693,7 @@
{
struct gendisk *g = drive->disk;
+ do_idedisk_standby(drive);
if ((drive->id->cfs_enable_2 & 0x3000) && drive->wcache)
if (do_idedisk_flushcache(drive))
printk (KERN_INFO "%s: Write Cache FAILED Flushing!\n",
@@ -1696,9 +1719,6 @@
.supports_dma = 1,
.supports_dsc_overlap = 0,
.cleanup = idedisk_cleanup,
- .standby = do_idedisk_standby,
- .suspend = do_idedisk_suspend,
- .resume = do_idedisk_resume,
.flushcache = do_idedisk_flushcache,
.do_request = do_rw_disk,
.sense = idedisk_dump_status,
@@ -1709,6 +1729,10 @@
.proc = idedisk_proc,
.attach = idedisk_attach,
.drives = LIST_HEAD_INIT(idedisk_driver.drives),
+ .gen_driver = {
+ .suspend = idedisk_suspend,
+ .resume = idedisk_resume,
+ }
};
static int idedisk_open(struct inode *inode, struct file *filp)
@@ -1835,8 +1859,7 @@
static int idedisk_init (void)
{
- ide_register_driver(&idedisk_driver);
- return 0;
+ return ide_register_driver(&idedisk_driver);
}
module_init(idedisk_init);
--- clean/drivers/ide/ide-probe.c 2002-11-12 18:40:35.000000000 +0100
+++ linux-swsusp/drivers/ide/ide-probe.c 2002-11-12 22:23:02.000000000 +0100
@@ -1059,6 +1059,7 @@
"%s","IDE Drive");
drive->gendev.parent = &hwif->gendev;
drive->gendev.bus = &ide_bus_type;
+ drive->gendev.driver_data = drive;
sprintf (name, "host%d/bus%d/target%d/lun%d",
(hwif->channel && hwif->mate) ?
hwif->mate->index : hwif->index,
--- clean/drivers/ide/ide.c 2002-11-12 18:40:35.000000000 +0100
+++ linux-swsusp/drivers/ide/ide.c 2002-11-12 22:23:02.000000000 +0100
@@ -3122,21 +3122,6 @@
#endif
}
-static int default_standby (ide_drive_t *drive)
-{
- return 0;
-}
-
-static int default_suspend (ide_drive_t *drive)
-{
- return 0;
-}
-
-static int default_resume (ide_drive_t *drive)
-{
- return 0;
-}
-
static int default_flushcache (ide_drive_t *drive)
{
return 0;
@@ -3193,9 +3178,6 @@
{
ide_driver_t *d = drive->driver;
- if (d->standby == NULL) d->standby = default_standby;
- if (d->suspend == NULL) d->suspend = default_suspend;
- if (d->resume == NULL) d->resume = default_resume;
if (d->flushcache == NULL) d->flushcache = default_flushcache;
if (d->do_request == NULL) d->do_request = default_do_request;
if (d->end_request == NULL) d->end_request = default_end_request;
@@ -3274,13 +3256,8 @@
ide_drive_t * drive = container_of(dev,ide_drive_t,gendev);
ide_driver_t * driver = drive->driver;
- if (driver) {
- if (driver->standby)
- driver->standby(drive);
- if (driver->cleanup)
- driver->cleanup(drive);
- }
-
+ if (driver && driver->cleanup)
+ driver->cleanup(drive);
return 0;
}
--- clean/drivers/md/md.c 2002-11-12 18:40:36.000000000 +0100
+++ linux-swsusp/drivers/md/md.c 2002-11-12 22:23:03.000000000 +0100
@@ -36,6 +36,7 @@
#include <linux/bio.h>
#include <linux/devfs_fs_kernel.h>
#include <linux/buffer_head.h> /* for invalidate_bdev */
+#include <linux/suspend.h>
#include <linux/init.h>
@@ -2470,6 +2471,8 @@
wait_event_interruptible(thread->wqueue,
test_bit(THREAD_WAKEUP, &thread->flags));
+ if (current->flags & PF_FREEZE)
+ refrigerator(PF_IOTHREAD);
clear_bit(THREAD_WAKEUP, &thread->flags);
@@ -2774,7 +2777,7 @@
if (!ok) {
mddev->recovery_running = -EIO;
md_recover_arrays();
- // stop recovery, signal do_sync ....
+ /* stop recovery, signal do_sync .... */
}
}
@@ -2795,6 +2798,9 @@
struct list_head *tmp;
unsigned long last_check;
+ if (current->flags & PF_FREEZE)
+ refrigerator(PF_IOTHREAD);
+
/* just incase thread restarts... */
if (mddev->recovery_running <= 0)
return;
@@ -2810,6 +2816,9 @@
mddev->curr_resync = 2;
ITERATE_MDDEV(mddev2,tmp) {
+ if (current->flags & PF_FREEZE)
+ refrigerator(PF_IOTHREAD);
+
if (mddev2 == mddev)
continue;
if (mddev2->curr_resync &&
@@ -2909,6 +2918,9 @@
*/
cond_resched();
+ if (current->flags & PF_FREEZE)
+ refrigerator(PF_IOTHREAD);
+
currspeed = (j-mddev->resync_mark_cnt)/2/((jiffies-mddev->resync_mark)/HZ +1) +1;
if (currspeed > sysctl_speed_limit_min) {
--- clean/drivers/net/3c59x.c 2002-11-12 18:40:36.000000000 +0100
+++ linux-swsusp/drivers/net/3c59x.c 2002-11-12 22:23:03.000000000 +0100
@@ -809,6 +809,9 @@
spinlock_t lock; /* Serialise access to device & its vortex_private */
spinlock_t mdio_lock; /* Serialise access to mdio hardware */
u32 power_state[16];
+#ifdef CONFIG_PM
+ int in_suspend;
+#endif
};
/* The action to take with a media selection timer tick.
@@ -893,6 +896,10 @@
struct net_device *dev = pci_get_drvdata(pdev);
if (dev && dev->priv) {
+ struct vortex_private *vp = dev->priv;
+ if (vp->in_suspend)
+ return 0;
+ vp->in_suspend = 1;
if (netif_running(dev)) {
netif_device_detach(dev);
vortex_down(dev);
@@ -906,6 +913,10 @@
struct net_device *dev = pci_get_drvdata(pdev);
if (dev && dev->priv) {
+ struct vortex_private *vp = dev->priv;
+ if (!vp->in_suspend)
+ return 0;
+ vp->in_suspend = 1;
if (netif_running(dev)) {
vortex_up(dev);
netif_device_attach(dev);
--- clean/include/asm-i386/suspend.h 2002-11-01 00:37:39.000000000 +0100
+++ linux-swsusp/include/asm-i386/suspend.h 2002-11-07 17:57:46.000000000 +0100
@@ -15,8 +15,6 @@
/* image of the saved processor state */
struct saved_context {
- unsigned long eax, ebx, ecx, edx;
- unsigned long esp, ebp, esi, edi;
u16 es, fs, gs, ss;
unsigned long cr0, cr2, cr3, cr4;
u16 gdt_pad;
@@ -30,9 +28,14 @@
unsigned long tr;
unsigned long safety;
unsigned long return_address;
- unsigned long eflags;
} __attribute__((packed));
+/* We'll access these from assembly, so we'd better have them outside struct */
+extern unsigned long saved_context_eax, saved_context_ebx, saved_context_ecx, saved_context_edx;
+extern unsigned long saved_context_esp, saved_context_ebp, saved_context_esi, saved_context_edi;
+extern unsigned long saved_context_eflags;
+
+
#define loaddebug(thread,register) \
__asm__("movl %0,%%db" #register \
: /* no output */ \
--- clean/include/linux/ide.h 2002-11-12 18:40:46.000000000 +0100
+++ linux-swsusp/include/linux/ide.h 2002-11-12 22:23:13.000000000 +0100
@@ -1189,9 +1189,6 @@
unsigned supports_dma : 1;
unsigned supports_dsc_overlap : 1;
int (*cleanup)(ide_drive_t *);
- int (*standby)(ide_drive_t *);
- int (*suspend)(ide_drive_t *);
- int (*resume)(ide_drive_t *);
int (*flushcache)(ide_drive_t *);
ide_startstop_t (*do_request)(ide_drive_t *, struct request *, sector_t);
int (*end_request)(ide_drive_t *, int, int);
--- clean/kernel/suspend.c 2002-11-01 00:37:42.000000000 +0100
+++ linux-swsusp/kernel/suspend.c 2002-11-08 11:37:06.000000000 +0100
@@ -145,10 +145,10 @@
/*
* Debug
*/
-#undef DEBUG_DEFAULT
+#define DEBUG_DEFAULT
#undef DEBUG_PROCESS
#undef DEBUG_SLOW
-#define TEST_SWSUSP 1 /* Set to 1 to reboot instead of halt machine after suspension */
+#define TEST_SWSUSP 0 /* Set to 1 to reboot instead of halt machine after suspension */
#ifdef DEBUG_DEFAULT
# define PRINTK(f, a...) printk(f, ## a)
@@ -235,6 +235,7 @@
} while(todo);
printk( "|\n" );
+ BUG_ON(in_atomic());
return 0;
}
@@ -489,7 +490,6 @@
if (PageNosave(page))
continue;
-
if ((chunk_size=is_head_of_free_region(page))!=0) {
pfn += chunk_size - 1;
continue;
@@ -500,9 +500,8 @@
/*
* Just copy whole code segment. Hopefully it is not that big.
*/
- if (ADDRESS(pfn) >= (unsigned long)
- &__nosave_begin && ADDRESS(pfn) <
- (unsigned long)&__nosave_end) {
+ if ((ADDRESS(pfn) >= (unsigned long) &__nosave_begin) &&
+ (ADDRESS(pfn) < (unsigned long) &__nosave_end)) {
PRINTK("[nosave %x]", ADDRESS(pfn));
continue;
}
@@ -549,7 +548,7 @@
pagedir_order = get_bitmask_order(SUSPEND_PD_PAGES(nr_copy_pages));
- p = pagedir = (suspend_pagedir_t *)__get_free_pages(GFP_ATOMIC, pagedir_order);
+ p = pagedir = (suspend_pagedir_t *)__get_free_pages(GFP_ATOMIC | __GFP_COLD, pagedir_order);
if(!pagedir)
return NULL;
@@ -558,11 +557,12 @@
SetPageNosave(page++);
while(nr_copy_pages--) {
- p->address = get_zeroed_page(GFP_ATOMIC);
+ p->address = get_zeroed_page(GFP_ATOMIC | __GFP_COLD);
if(!p->address) {
free_suspend_pagedir((unsigned long) pagedir);
return NULL;
}
+ printk(".");
SetPageNosave(virt_to_page(p->address));
p->orig_address = 0;
p++;
@@ -623,7 +623,7 @@
static void free_some_memory(void)
{
printk("Freeing memory: ");
- while (try_to_free_pages(&contig_page_data.node_zones[ZONE_HIGHMEM], GFP_KSWAPD, 0))
+ while (shrink_all_memory(10000))
printk(".");
printk("|\n");
}
@@ -676,7 +676,7 @@
}
}
-static int suspend_save_image(void)
+static int suspend_prepare_image(void)
{
struct sysinfo i;
unsigned int nr_needed_pages = 0;
@@ -725,9 +725,15 @@
*
* Following line enforces not writing to disk until we choose.
*/
- drivers_unsuspend();
- spin_unlock_irq(&suspend_pagedir_lock);
+
printk( "critical section/: done (%d pages copied)\n", nr_copy_pages );
+ spin_unlock_irq(&suspend_pagedir_lock);
+ return 0;
+}
+
+void suspend_save_image(void)
+{
+ drivers_unsuspend();
lock_swapdevices();
write_suspend_image();
@@ -738,7 +744,6 @@
* filesystem clean: it is not. (And it does not matter, if we resume
* correctly, we'll mark system clean, anyway.)
*/
- return 0;
}
void suspend_power_down(void)
@@ -788,8 +793,8 @@
PRINTK( "Freeing prev allocated pagedir\n" );
free_suspend_pagedir((unsigned long) pagedir_save);
- drivers_resume(RESUME_ALL_PHASES);
spin_unlock_irq(&suspend_pagedir_lock);
+ drivers_resume(RESUME_ALL_PHASES);
PRINTK( "Fixing swap signatures... " );
mark_swapfiles(((swp_entry_t) {0}), MARK_SWAP_RESUME);
@@ -804,14 +809,17 @@
{
mb();
barrier();
+ BUG_ON(in_atomic());
spin_lock_irq(&suspend_pagedir_lock);
}
void do_magic_suspend_2(void)
{
read_swapfiles();
- if (!suspend_save_image())
+ if (!suspend_prepare_image()) { /* suspend_save_image realeses suspend_pagedir_lock */
+ suspend_save_image();
suspend_power_down(); /* FIXME: if suspend_power_down is commented out, console is lost after few suspends ?! */
+ }
printk(KERN_EMERG "%sSuspend failed, trying to recover...\n", name_suspend);
MDELAY(1000); /* So user can wait and report us messages if armageddon comes :-) */
--- clean/mm/page_alloc.c 2002-11-12 18:40:47.000000000 +0100
+++ linux-swsusp/mm/page_alloc.c 2002-11-12 22:23:14.000000000 +0100
@@ -368,7 +368,7 @@
unsigned long flags;
struct page *page = NULL;
- if (order == 0) {
+ if ((order == 0) && !cold) {
struct per_cpu_pages *pcp;
pcp = &zone->pageset[get_cpu()].pcp[cold];
--
Worst form of spam? Adding advertisment signatures ala sourceforge.net.
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next reply other threads:[~2002-11-13 20:24 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-11-12 21:51 Pavel Machek [this message]
-- strict thread matches above, loose matches on Subject: below --
2002-11-13 20:41 swsusp for 2.5.47 [not for inclusion] Petr Vandrovec
2002-11-13 20:57 ` Pavel Machek
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