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authorIngo Molnar <mingo@elte.hu>2009-12-28 09:23:13 +0100
committerIngo Molnar <mingo@elte.hu>2009-12-28 09:23:13 +0100
commit605c1a187f3ce82fbc243e2163c5ca8d1926df8e (patch)
treec8065a8c5606a66f81dc494ce22a5baa5e0dfe7e /arch/x86
parent17a2a9b57a9a7d2fd8f97df951b5e63e0bd56ef5 (diff)
parentce9277fb08e6e721482f7011ca28dcd0449b197c (diff)
Merge branch 'iommu/fixes' of git://git.kernel.org/pub/scm/linux/kernel/git/joro/linux-2.6-iommu into x86/urgent
Diffstat (limited to 'arch/x86')
-rw-r--r--arch/x86/Kconfig11
-rw-r--r--arch/x86/Kconfig.debug4
-rw-r--r--arch/x86/boot/header.S2
-rw-r--r--arch/x86/boot/version.c4
-rw-r--r--arch/x86/ia32/ia32entry.S2
-rw-r--r--arch/x86/ia32/sys_ia32.c43
-rw-r--r--arch/x86/include/asm/asm-offsets.h1
-rw-r--r--arch/x86/include/asm/dma-mapping.h2
-rw-r--r--arch/x86/include/asm/elf.h1
-rw-r--r--arch/x86/include/asm/geode.h219
-rw-r--r--arch/x86/include/asm/olpc.h2
-rw-r--r--arch/x86/include/asm/paravirt.h14
-rw-r--r--arch/x86/include/asm/paravirt_types.h14
-rw-r--r--arch/x86/include/asm/pci_x86.h20
-rw-r--r--arch/x86/include/asm/percpu.h104
-rw-r--r--arch/x86/include/asm/ptrace.h2
-rw-r--r--arch/x86/include/asm/spinlock.h62
-rw-r--r--arch/x86/include/asm/spinlock_types.h10
-rw-r--r--arch/x86/include/asm/sys_ia32.h4
-rw-r--r--arch/x86/include/asm/syscalls.h2
-rw-r--r--arch/x86/include/asm/topology.h9
-rw-r--r--arch/x86/include/asm/uv/bios.h11
-rw-r--r--arch/x86/include/asm/uv/uv_hub.h44
-rw-r--r--arch/x86/include/asm/xen/hypervisor.h27
-rw-r--r--arch/x86/kernel/Makefile1
-rw-r--r--arch/x86/kernel/acpi/cstate.c2
-rw-r--r--arch/x86/kernel/amd_iommu.c4
-rw-r--r--arch/x86/kernel/amd_iommu_init.c13
-rw-r--r--arch/x86/kernel/apic/io_apic.c4
-rw-r--r--arch/x86/kernel/apic/nmi.c8
-rw-r--r--arch/x86/kernel/bios_uv.c8
-rw-r--r--arch/x86/kernel/cpu/common.c8
-rw-r--r--arch/x86/kernel/cpu/cpu_debug.c30
-rw-r--r--arch/x86/kernel/cpu/cpufreq/acpi-cpufreq.c45
-rw-r--r--arch/x86/kernel/cpu/cpufreq/powernow-k6.c2
-rw-r--r--arch/x86/kernel/cpu/cpufreq/powernow-k7.c19
-rw-r--r--arch/x86/kernel/cpu/cpufreq/powernow-k8.c32
-rw-r--r--arch/x86/kernel/cpu/cpufreq/speedstep-ich.c2
-rw-r--r--arch/x86/kernel/cpu/cpufreq/speedstep-lib.c6
-rw-r--r--arch/x86/kernel/cpu/cpufreq/speedstep-lib.h24
-rw-r--r--arch/x86/kernel/cpu/cpufreq/speedstep-smi.c2
-rw-r--r--arch/x86/kernel/cpu/intel_cacheinfo.c54
-rw-r--r--arch/x86/kernel/cpu/mtrr/if.c11
-rw-r--r--arch/x86/kernel/cpu/perf_event.c31
-rw-r--r--arch/x86/kernel/ds.c4
-rw-r--r--arch/x86/kernel/dumpstack.c8
-rw-r--r--arch/x86/kernel/dumpstack_64.c33
-rw-r--r--arch/x86/kernel/entry_64.S6
-rw-r--r--arch/x86/kernel/geode_32.c196
-rw-r--r--arch/x86/kernel/hw_breakpoint.c5
-rw-r--r--arch/x86/kernel/irq.c14
-rw-r--r--arch/x86/kernel/kgdb.c14
-rw-r--r--arch/x86/kernel/mfgpt_32.c410
-rw-r--r--arch/x86/kernel/olpc.c4
-rw-r--r--arch/x86/kernel/paravirt-spinlocks.c4
-rw-r--r--arch/x86/kernel/pci-calgary_64.c6
-rw-r--r--arch/x86/kernel/pci-gart_64.c6
-rw-r--r--arch/x86/kernel/ptrace.c135
-rw-r--r--arch/x86/kernel/reboot_fixups_32.c2
-rw-r--r--arch/x86/kernel/sys_i386_32.c27
-rw-r--r--arch/x86/kernel/sys_x86_64.c17
-rw-r--r--arch/x86/kernel/syscall_table_32.S2
-rw-r--r--arch/x86/kernel/tsc_sync.c10
-rw-r--r--arch/x86/kernel/x8664_ksyms_64.c4
-rw-r--r--arch/x86/kvm/svm.c64
-rw-r--r--arch/x86/lib/Makefile4
-rw-r--r--arch/x86/mm/pat.c3
-rw-r--r--arch/x86/pci/Makefile5
-rw-r--r--arch/x86/pci/acpi.c74
-rw-r--r--arch/x86/pci/amd_bus.c120
-rw-r--r--arch/x86/pci/bus_numa.c101
-rw-r--r--arch/x86/pci/bus_numa.h27
-rw-r--r--arch/x86/pci/common.c20
-rw-r--r--arch/x86/pci/early.c7
-rw-r--r--arch/x86/pci/i386.c42
-rw-r--r--arch/x86/pci/intel_bus.c90
-rw-r--r--arch/x86/pci/mmconfig-shared.c356
-rw-r--r--arch/x86/pci/mmconfig_32.c16
-rw-r--r--arch/x86/pci/mmconfig_64.c88
-rw-r--r--arch/x86/tools/test_get_len.c2
-rw-r--r--arch/x86/xen/enlighten.c6
-rw-r--r--arch/x86/xen/smp.c41
-rw-r--r--arch/x86/xen/spinlock.c16
-rw-r--r--arch/x86/xen/time.c24
84 files changed, 1152 insertions, 1781 deletions
diff --git a/arch/x86/Kconfig b/arch/x86/Kconfig
index 32a1918e1b88..3b2a5aca4edb 100644
--- a/arch/x86/Kconfig
+++ b/arch/x86/Kconfig
@@ -2012,18 +2012,9 @@ config SCx200HR_TIMER
processor goes idle (as is done by the scheduler). The
other workaround is idle=poll boot option.
-config GEODE_MFGPT_TIMER
- def_bool y
- prompt "Geode Multi-Function General Purpose Timer (MFGPT) events"
- depends on MGEODE_LX && GENERIC_TIME && GENERIC_CLOCKEVENTS
- ---help---
- This driver provides a clock event source based on the MFGPT
- timer(s) in the CS5535 and CS5536 companion chip for the geode.
- MFGPTs have a better resolution and max interval than the
- generic PIT, and are suitable for use as high-res timers.
-
config OLPC
bool "One Laptop Per Child support"
+ select GPIOLIB
default n
---help---
Add support for detecting the unique features of the OLPC
diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug
index 731318e5ac1d..bc01e3ebfeb2 100644
--- a/arch/x86/Kconfig.debug
+++ b/arch/x86/Kconfig.debug
@@ -187,8 +187,8 @@ config HAVE_MMIOTRACE_SUPPORT
def_bool y
config X86_DECODER_SELFTEST
- bool "x86 instruction decoder selftest"
- depends on DEBUG_KERNEL
+ bool "x86 instruction decoder selftest"
+ depends on DEBUG_KERNEL && KPROBES
---help---
Perform x86 instruction decoder selftests at build time.
This option is useful for checking the sanity of x86 instruction
diff --git a/arch/x86/boot/header.S b/arch/x86/boot/header.S
index b31cc54b4641..93e689f4bd86 100644
--- a/arch/x86/boot/header.S
+++ b/arch/x86/boot/header.S
@@ -16,7 +16,7 @@
*/
#include <asm/segment.h>
-#include <linux/utsrelease.h>
+#include <generated/utsrelease.h>
#include <asm/boot.h>
#include <asm/e820.h>
#include <asm/page_types.h>
diff --git a/arch/x86/boot/version.c b/arch/x86/boot/version.c
index 2723d9b5ce43..2b15aa488ffb 100644
--- a/arch/x86/boot/version.c
+++ b/arch/x86/boot/version.c
@@ -13,8 +13,8 @@
*/
#include "boot.h"
-#include <linux/utsrelease.h>
-#include <linux/compile.h>
+#include <generated/utsrelease.h>
+#include <generated/compile.h>
const char kernel_version[] =
UTS_RELEASE " (" LINUX_COMPILE_BY "@" LINUX_COMPILE_HOST ") "
diff --git a/arch/x86/ia32/ia32entry.S b/arch/x86/ia32/ia32entry.S
index 4eefdca9832b..53147ad85b96 100644
--- a/arch/x86/ia32/ia32entry.S
+++ b/arch/x86/ia32/ia32entry.S
@@ -696,7 +696,7 @@ ia32_sys_call_table:
.quad quiet_ni_syscall /* streams2 */
.quad stub32_vfork /* 190 */
.quad compat_sys_getrlimit
- .quad sys32_mmap2
+ .quad sys_mmap_pgoff
.quad sys32_truncate64
.quad sys32_ftruncate64
.quad sys32_stat64 /* 195 */
diff --git a/arch/x86/ia32/sys_ia32.c b/arch/x86/ia32/sys_ia32.c
index df82c0e48ded..422572c77923 100644
--- a/arch/x86/ia32/sys_ia32.c
+++ b/arch/x86/ia32/sys_ia32.c
@@ -155,9 +155,6 @@ struct mmap_arg_struct {
asmlinkage long sys32_mmap(struct mmap_arg_struct __user *arg)
{
struct mmap_arg_struct a;
- struct file *file = NULL;
- unsigned long retval;
- struct mm_struct *mm ;
if (copy_from_user(&a, arg, sizeof(a)))
return -EFAULT;
@@ -165,22 +162,8 @@ asmlinkage long sys32_mmap(struct mmap_arg_struct __user *arg)
if (a.offset & ~PAGE_MASK)
return -EINVAL;
- if (!(a.flags & MAP_ANONYMOUS)) {
- file = fget(a.fd);
- if (!file)
- return -EBADF;
- }
-
- mm = current->mm;
- down_write(&mm->mmap_sem);
- retval = do_mmap_pgoff(file, a.addr, a.len, a.prot, a.flags,
+ return sys_mmap_pgoff(a.addr, a.len, a.prot, a.flags, a.fd,
a.offset>>PAGE_SHIFT);
- if (file)
- fput(file);
-
- up_write(&mm->mmap_sem);
-
- return retval;
}
asmlinkage long sys32_mprotect(unsigned long start, size_t len,
@@ -483,30 +466,6 @@ asmlinkage long sys32_sendfile(int out_fd, int in_fd,
return ret;
}
-asmlinkage long sys32_mmap2(unsigned long addr, unsigned long len,
- unsigned long prot, unsigned long flags,
- unsigned long fd, unsigned long pgoff)
-{
- struct mm_struct *mm = current->mm;
- unsigned long error;
- struct file *file = NULL;
-
- flags &= ~(MAP_EXECUTABLE | MAP_DENYWRITE);
- if (!(flags & MAP_ANONYMOUS)) {
- file = fget(fd);
- if (!file)
- return -EBADF;
- }
-
- down_write(&mm->mmap_sem);
- error = do_mmap_pgoff(file, addr, len, prot, flags, pgoff);
- up_write(&mm->mmap_sem);
-
- if (file)
- fput(file);
- return error;
-}
-
asmlinkage long sys32_olduname(struct oldold_utsname __user *name)
{
char *arch = "x86_64";
diff --git a/arch/x86/include/asm/asm-offsets.h b/arch/x86/include/asm/asm-offsets.h
new file mode 100644
index 000000000000..d370ee36a182
--- /dev/null
+++ b/arch/x86/include/asm/asm-offsets.h
@@ -0,0 +1 @@
+#include <generated/asm-offsets.h>
diff --git a/arch/x86/include/asm/dma-mapping.h b/arch/x86/include/asm/dma-mapping.h
index 0f6c02f3b7d4..ac91eed21061 100644
--- a/arch/x86/include/asm/dma-mapping.h
+++ b/arch/x86/include/asm/dma-mapping.h
@@ -67,7 +67,7 @@ static inline bool dma_capable(struct device *dev, dma_addr_t addr, size_t size)
if (!dev->dma_mask)
return 0;
- return addr + size <= *dev->dma_mask;
+ return addr + size - 1 <= *dev->dma_mask;
}
static inline dma_addr_t phys_to_dma(struct device *dev, phys_addr_t paddr)
diff --git a/arch/x86/include/asm/elf.h b/arch/x86/include/asm/elf.h
index 8a024babe5e6..b4501ee223ad 100644
--- a/arch/x86/include/asm/elf.h
+++ b/arch/x86/include/asm/elf.h
@@ -239,7 +239,6 @@ extern int force_personality32;
#endif /* !CONFIG_X86_32 */
#define CORE_DUMP_USE_REGSET
-#define USE_ELF_CORE_DUMP
#define ELF_EXEC_PAGESIZE 4096
/* This is the location that an ET_DYN program is loaded if exec'ed. Typical
diff --git a/arch/x86/include/asm/geode.h b/arch/x86/include/asm/geode.h
index ad3c2ed75481..7cd73552a4e8 100644
--- a/arch/x86/include/asm/geode.h
+++ b/arch/x86/include/asm/geode.h
@@ -12,160 +12,7 @@
#include <asm/processor.h>
#include <linux/io.h>
-
-/* Generic southbridge functions */
-
-#define GEODE_DEV_PMS 0
-#define GEODE_DEV_ACPI 1
-#define GEODE_DEV_GPIO 2
-#define GEODE_DEV_MFGPT 3
-
-extern int geode_get_dev_base(unsigned int dev);
-
-/* Useful macros */
-#define geode_pms_base() geode_get_dev_base(GEODE_DEV_PMS)
-#define geode_acpi_base() geode_get_dev_base(GEODE_DEV_ACPI)
-#define geode_gpio_base() geode_get_dev_base(GEODE_DEV_GPIO)
-#define geode_mfgpt_base() geode_get_dev_base(GEODE_DEV_MFGPT)
-
-/* MSRS */
-
-#define MSR_GLIU_P2D_RO0 0x10000029
-
-#define MSR_LX_GLD_MSR_CONFIG 0x48002001
-#define MSR_LX_MSR_PADSEL 0x48002011 /* NOT 0x48000011; the data
- * sheet has the wrong value */
-#define MSR_GLCP_SYS_RSTPLL 0x4C000014
-#define MSR_GLCP_DOTPLL 0x4C000015
-
-#define MSR_LBAR_SMB 0x5140000B
-#define MSR_LBAR_GPIO 0x5140000C
-#define MSR_LBAR_MFGPT 0x5140000D
-#define MSR_LBAR_ACPI 0x5140000E
-#define MSR_LBAR_PMS 0x5140000F
-
-#define MSR_DIVIL_SOFT_RESET 0x51400017
-
-#define MSR_PIC_YSEL_LOW 0x51400020
-#define MSR_PIC_YSEL_HIGH 0x51400021
-#define MSR_PIC_ZSEL_LOW 0x51400022
-#define MSR_PIC_ZSEL_HIGH 0x51400023
-#define MSR_PIC_IRQM_LPC 0x51400025
-
-#define MSR_MFGPT_IRQ 0x51400028
-#define MSR_MFGPT_NR 0x51400029
-#define MSR_MFGPT_SETUP 0x5140002B
-
-#define MSR_LX_SPARE_MSR 0x80000011 /* DC-specific */
-
-#define MSR_GX_GLD_MSR_CONFIG 0xC0002001
-#define MSR_GX_MSR_PADSEL 0xC0002011
-
-/* Resource Sizes */
-
-#define LBAR_GPIO_SIZE 0xFF
-#define LBAR_MFGPT_SIZE 0x40
-#define LBAR_ACPI_SIZE 0x40
-#define LBAR_PMS_SIZE 0x80
-
-/* ACPI registers (PMS block) */
-
-/*
- * PM1_EN is only valid when VSA is enabled for 16 bit reads.
- * When VSA is not enabled, *always* read both PM1_STS and PM1_EN
- * with a 32 bit read at offset 0x0
- */
-
-#define PM1_STS 0x00
-#define PM1_EN 0x02
-#define PM1_CNT 0x08
-#define PM2_CNT 0x0C
-#define PM_TMR 0x10
-#define PM_GPE0_STS 0x18
-#define PM_GPE0_EN 0x1C
-
-/* PMC registers (PMS block) */
-
-#define PM_SSD 0x00
-#define PM_SCXA 0x04
-#define PM_SCYA 0x08
-#define PM_OUT_SLPCTL 0x0C
-#define PM_SCLK 0x10
-#define PM_SED 0x1
-#define PM_SCXD 0x18
-#define PM_SCYD 0x1C
-#define PM_IN_SLPCTL 0x20
-#define PM_WKD 0x30
-#define PM_WKXD 0x34
-#define PM_RD 0x38
-#define PM_WKXA 0x3C
-#define PM_FSD 0x40
-#define PM_TSD 0x44
-#define PM_PSD 0x48
-#define PM_NWKD 0x4C
-#define PM_AWKD 0x50
-#define PM_SSC 0x54
-
-/* VSA2 magic values */
-
-#define VSA_VRC_INDEX 0xAC1C
-#define VSA_VRC_DATA 0xAC1E
-#define VSA_VR_UNLOCK 0xFC53 /* unlock virtual register */
-#define VSA_VR_SIGNATURE 0x0003
-#define VSA_VR_MEM_SIZE 0x0200
-#define AMD_VSA_SIG 0x4132 /* signature is ascii 'VSA2' */
-#define GSW_VSA_SIG 0x534d /* General Software signature */
-/* GPIO */
-
-#define GPIO_OUTPUT_VAL 0x00
-#define GPIO_OUTPUT_ENABLE 0x04
-#define GPIO_OUTPUT_OPEN_DRAIN 0x08
-#define GPIO_OUTPUT_INVERT 0x0C
-#define GPIO_OUTPUT_AUX1 0x10
-#define GPIO_OUTPUT_AUX2 0x14
-#define GPIO_PULL_UP 0x18
-#define GPIO_PULL_DOWN 0x1C
-#define GPIO_INPUT_ENABLE 0x20
-#define GPIO_INPUT_INVERT 0x24
-#define GPIO_INPUT_FILTER 0x28
-#define GPIO_INPUT_EVENT_COUNT 0x2C
-#define GPIO_READ_BACK 0x30
-#define GPIO_INPUT_AUX1 0x34
-#define GPIO_EVENTS_ENABLE 0x38
-#define GPIO_LOCK_ENABLE 0x3C
-#define GPIO_POSITIVE_EDGE_EN 0x40
-#define GPIO_NEGATIVE_EDGE_EN 0x44
-#define GPIO_POSITIVE_EDGE_STS 0x48
-#define GPIO_NEGATIVE_EDGE_STS 0x4C
-
-#define GPIO_MAP_X 0xE0
-#define GPIO_MAP_Y 0xE4
-#define GPIO_MAP_Z 0xE8
-#define GPIO_MAP_W 0xEC
-
-static inline u32 geode_gpio(unsigned int nr)
-{
- BUG_ON(nr > 28);
- return 1 << nr;
-}
-
-extern void geode_gpio_set(u32, unsigned int);
-extern void geode_gpio_clear(u32, unsigned int);
-extern int geode_gpio_isset(u32, unsigned int);
-extern void geode_gpio_setup_event(unsigned int, int, int);
-extern void geode_gpio_set_irq(unsigned int, unsigned int);
-
-static inline void geode_gpio_event_irq(unsigned int gpio, int pair)
-{
- geode_gpio_setup_event(gpio, pair, 0);
-}
-
-static inline void geode_gpio_event_pme(unsigned int gpio, int pair)
-{
- geode_gpio_setup_event(gpio, pair, 1);
-}
-
-/* Specific geode tests */
+#include <linux/cs5535.h>
static inline int is_geode_gx(void)
{
@@ -186,68 +33,4 @@ static inline int is_geode(void)
return (is_geode_gx() || is_geode_lx());
}
-#ifdef CONFIG_MGEODE_LX
-extern int geode_has_vsa2(void);
-#else
-static inline int geode_has_vsa2(void)
-{
- return 0;
-}
-#endif
-
-/* MFGPTs */
-
-#define MFGPT_MAX_TIMERS 8
-#define MFGPT_TIMER_ANY (-1)
-
-#define MFGPT_DOMAIN_WORKING 1
-#define MFGPT_DOMAIN_STANDBY 2
-#define MFGPT_DOMAIN_ANY (MFGPT_DOMAIN_WORKING | MFGPT_DOMAIN_STANDBY)
-
-#define MFGPT_CMP1 0
-#define MFGPT_CMP2 1
-
-#define MFGPT_EVENT_IRQ 0
-#define MFGPT_EVENT_NMI 1
-#define MFGPT_EVENT_RESET 3
-
-#define MFGPT_REG_CMP1 0
-#define MFGPT_REG_CMP2 2
-#define MFGPT_REG_COUNTER 4
-#define MFGPT_REG_SETUP 6
-
-#define MFGPT_SETUP_CNTEN (1 << 15)
-#define MFGPT_SETUP_CMP2 (1 << 14)
-#define MFGPT_SETUP_CMP1 (1 << 13)
-#define MFGPT_SETUP_SETUP (1 << 12)
-#define MFGPT_SETUP_STOPEN (1 << 11)
-#define MFGPT_SETUP_EXTEN (1 << 10)
-#define MFGPT_SETUP_REVEN (1 << 5)
-#define MFGPT_SETUP_CLKSEL (1 << 4)
-
-static inline void geode_mfgpt_write(int timer, u16 reg, u16 value)
-{
- u32 base = geode_get_dev_base(GEODE_DEV_MFGPT);
- outw(value, base + reg + (timer * 8));
-}
-
-static inline u16 geode_mfgpt_read(int timer, u16 reg)
-{
- u32 base = geode_get_dev_base(GEODE_DEV_MFGPT);
- return inw(base + reg + (timer * 8));
-}
-
-extern int geode_mfgpt_toggle_event(int timer, int cmp, int event, int enable);
-extern int geode_mfgpt_set_irq(int timer, int cmp, int *irq, int enable);
-extern int geode_mfgpt_alloc_timer(int timer, int domain);
-
-#define geode_mfgpt_setup_irq(t, c, i) geode_mfgpt_set_irq((t), (c), (i), 1)
-#define geode_mfgpt_release_irq(t, c, i) geode_mfgpt_set_irq((t), (c), (i), 0)
-
-#ifdef CONFIG_GEODE_MFGPT_TIMER
-extern int __init mfgpt_timer_setup(void);
-#else
-static inline int mfgpt_timer_setup(void) { return 0; }
-#endif
-
#endif /* _ASM_X86_GEODE_H */
diff --git a/arch/x86/include/asm/olpc.h b/arch/x86/include/asm/olpc.h
index 834a30295fab..3a57385d9fa7 100644
--- a/arch/x86/include/asm/olpc.h
+++ b/arch/x86/include/asm/olpc.h
@@ -120,7 +120,7 @@ extern int olpc_ec_mask_unset(uint8_t bits);
/* GPIO assignments */
-#define OLPC_GPIO_MIC_AC geode_gpio(1)
+#define OLPC_GPIO_MIC_AC 1
#define OLPC_GPIO_DCON_IRQ geode_gpio(7)
#define OLPC_GPIO_THRM_ALRM geode_gpio(10)
#define OLPC_GPIO_SMB_CLK geode_gpio(14)
diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h
index efb38994859c..dd59a85a918f 100644
--- a/arch/x86/include/asm/paravirt.h
+++ b/arch/x86/include/asm/paravirt.h
@@ -731,34 +731,34 @@ static inline void __set_fixmap(unsigned /* enum fixed_addresses */ idx,
#if defined(CONFIG_SMP) && defined(CONFIG_PARAVIRT_SPINLOCKS)
-static inline int __raw_spin_is_locked(struct raw_spinlock *lock)
+static inline int arch_spin_is_locked(struct arch_spinlock *loc