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Code Issues Releases Wiki Activity

Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

This commit is contained in:
David S. Miller 2011-12-30 13:04:14 -05:00
parent 8ade06c616 89307babf9
commit 7f8e3234c5
51 changed files with 356 additions and 172 deletions
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16
Documentation/virtual/kvm/api.txt
View File

@ -1100,6 +1100,15 @@ emulate them efficiently. The fields in each entry are defined as follows:
eax, ebx, ecx, edx: the values returned by the cpuid instruction for
this function/index combination
The TSC deadline timer feature (CPUID leaf 1, ecx[24]) is always returned
as false, since the feature depends on KVM_CREATE_IRQCHIP for local APIC
support. Instead it is reported via
ioctl(KVM_CHECK_EXTENSION, KVM_CAP_TSC_DEADLINE_TIMER)
if that returns true and you use KVM_CREATE_IRQCHIP, or if you emulate the
feature in userspace, then you can enable the feature for KVM_SET_CPUID2.
4.47 KVM_PPC_GET_PVINFO
Capability: KVM_CAP_PPC_GET_PVINFO
@ -1151,6 +1160,13 @@ following flags are specified:
/* Depends on KVM_CAP_IOMMU */
#define KVM_DEV_ASSIGN_ENABLE_IOMMU (1 << 0)
The KVM_DEV_ASSIGN_ENABLE_IOMMU flag is a mandatory option to ensure
isolation of the device. Usages not specifying this flag are deprecated.
Only PCI header type 0 devices with PCI BAR resources are supported by
device assignment. The user requesting this ioctl must have read/write
access to the PCI sysfs resource files associated with the device.
4.49 KVM_DEASSIGN_PCI_DEVICE
Capability: KVM_CAP_DEVICE_DEASSIGNMENT

2
MAINTAINERS
View File

@ -2700,7 +2700,7 @@ FIREWIRE SUBSYSTEM
M: Stefan Richter <stefanr@s5r6.in-berlin.de>
L: linux1394-devel@lists.sourceforge.net
W: http://ieee1394.wiki.kernel.org/
T: git git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394-2.6.git
T: git git://git.kernel.org/pub/scm/linux/kernel/git/ieee1394/linux1394.git
S: Maintained
F: drivers/firewire/
F: include/linux/firewire*.h

2
Makefile
View File

@ -1,7 +1,7 @@
VERSION = 3
PATCHLEVEL = 2
SUBLEVEL = 0
EXTRAVERSION = -rc6
EXTRAVERSION = -rc7
NAME = Saber-toothed Squirrel
# *DOCUMENTATION*

2
arch/arm/oprofile/common.c
View File

@ -116,7 +116,7 @@ int __init oprofile_arch_init(struct oprofile_operations *ops)
return oprofile_perf_init(ops);
}
void __exit oprofile_arch_exit(void)
void oprofile_arch_exit(void)
{
oprofile_perf_exit();
}

1
arch/ia64/include/asm/cputime.h
View File

@ -60,6 +60,7 @@ typedef u64 cputime64_t;
*/
#define cputime_to_usecs(__ct) ((__ct) / NSEC_PER_USEC)
#define usecs_to_cputime(__usecs) ((__usecs) * NSEC_PER_USEC)
#define usecs_to_cputime64(__usecs) usecs_to_cputime(__usecs)
/*
* Convert cputime <-> seconds

2
arch/powerpc/include/asm/cputime.h
View File

@ -150,6 +150,8 @@ static inline cputime_t usecs_to_cputime(const unsigned long us)
return ct;
}
#define usecs_to_cputime64(us) usecs_to_cputime(us)
/*
* Convert cputime <-> seconds
*/

33
arch/powerpc/include/asm/kvm_book3s.h
View File

@ -381,39 +381,6 @@ static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
}
#endif
static inline unsigned long compute_tlbie_rb(unsigned long v, unsigned long r,
unsigned long pte_index)
{
unsigned long rb, va_low;
rb = (v & ~0x7fUL) << 16; /* AVA field */
va_low = pte_index >> 3;
if (v & HPTE_V_SECONDARY)
va_low = ~va_low;
/* xor vsid from AVA */
if (!(v & HPTE_V_1TB_SEG))
va_low ^= v >> 12;
else
va_low ^= v >> 24;
va_low &= 0x7ff;
if (v & HPTE_V_LARGE) {
rb |= 1; /* L field */
if (cpu_has_feature(CPU_FTR_ARCH_206) &&
(r & 0xff000)) {
/* non-16MB large page, must be 64k */
/* (masks depend on page size) */
rb |= 0x1000; /* page encoding in LP field */
rb |= (va_low & 0x7f) << 16; /* 7b of VA in AVA/LP field */
rb |= (va_low & 0xfe); /* AVAL field (P7 doesn't seem to care) */
}
} else {
/* 4kB page */
rb |= (va_low & 0x7ff) << 12; /* remaining 11b of VA */
}
rb |= (v >> 54) & 0x300; /* B field */
return rb;
}
/* Magic register values loaded into r3 and r4 before the 'sc' assembly
* instruction for the OSI hypercalls */
#define OSI_SC_MAGIC_R3 0x113724FA

33
arch/powerpc/include/asm/kvm_book3s_64.h
View File

@ -29,4 +29,37 @@ static inline struct kvmppc_book3s_shadow_vcpu *to_svcpu(struct kvm_vcpu *vcpu)
#define SPAPR_TCE_SHIFT 12
static inline unsigned long compute_tlbie_rb(unsigned long v, unsigned long r,
unsigned long pte_index)
{
unsigned long rb, va_low;
rb = (v & ~0x7fUL) << 16; /* AVA field */
va_low = pte_index >> 3;
if (v & HPTE_V_SECONDARY)
va_low = ~va_low;
/* xor vsid from AVA */
if (!(v & HPTE_V_1TB_SEG))
va_low ^= v >> 12;
else
va_low ^= v >> 24;
va_low &= 0x7ff;
if (v & HPTE_V_LARGE) {
rb |= 1; /* L field */
if (cpu_has_feature(CPU_FTR_ARCH_206) &&
(r & 0xff000)) {
/* non-16MB large page, must be 64k */
/* (masks depend on page size) */
rb |= 0x1000; /* page encoding in LP field */
rb |= (va_low & 0x7f) << 16; /* 7b of VA in AVA/LP field */
rb |= (va_low & 0xfe); /* AVAL field (P7 doesn't seem to care) */
}
} else {
/* 4kB page */
rb |= (va_low & 0x7ff) << 12; /* remaining 11b of VA */
}
rb |= (v >> 54) & 0x300; /* B field */
return rb;
}
#endif /* __ASM_KVM_BOOK3S_64_H__ */

2
arch/powerpc/kvm/book3s_hv.c
View File

@ -538,7 +538,7 @@ static void kvmppc_start_thread(struct kvm_vcpu *vcpu)
tpaca->kvm_hstate.napping = 0;
vcpu->cpu = vc->pcpu;
smp_wmb();
#ifdef CONFIG_PPC_ICP_NATIVE
#if defined(CONFIG_PPC_ICP_NATIVE) && defined(CONFIG_SMP)
if (vcpu->arch.ptid) {
tpaca->cpu_start = 0x80;
wmb();

2
arch/powerpc/kvm/book3s_pr.c
View File

@ -658,10 +658,12 @@ program_interrupt:
ulong cmd = kvmppc_get_gpr(vcpu, 3);
int i;
#ifdef CONFIG_KVM_BOOK3S_64_PR
if (kvmppc_h_pr(vcpu, cmd) == EMULATE_DONE) {
r = RESUME_GUEST;
break;
}
#endif
run->papr_hcall.nr = cmd;
for (i = 0; i < 9; ++i) {

1
arch/powerpc/kvm/e500.c
View File

@ -15,6 +15,7 @@
#include <linux/kvm_host.h>
#include <linux/slab.h>
#include <linux/err.h>
#include <linux/export.h>
#include <asm/reg.h>
#include <asm/cputable.h>

2
arch/s390/include/asm/cputime.h
View File

@ -87,6 +87,8 @@ usecs_to_cputime(const unsigned int m)
return (cputime_t) m * 4096;
}
#define usecs_to_cputime64(m) usecs_to_cputime(m)
/*
* Convert cputime to milliseconds and back.
*/

4
arch/sh/oprofile/common.c
View File

@ -49,7 +49,7 @@ int __init oprofile_arch_init(struct oprofile_operations *ops)
return oprofile_perf_init(ops);
}
void __exit oprofile_arch_exit(void)
void oprofile_arch_exit(void)
{
oprofile_perf_exit();
kfree(sh_pmu_op_name);
@ -60,5 +60,5 @@ int __init oprofile_arch_init(struct oprofile_operations *ops)
ops->backtrace = sh_backtrace;
return -ENODEV;
}
void __exit oprofile_arch_exit(void) {}
void oprofile_arch_exit(void) {}
#endif /* CONFIG_HW_PERF_EVENTS */

4
arch/sparc/kernel/pci_sun4v.c
View File

@ -849,10 +849,10 @@ static int pci_sun4v_msiq_build_irq(struct pci_pbm_info *pbm,
if (!irq)
return -ENOMEM;
if (pci_sun4v_msiq_setstate(pbm->devhandle, msiqid, HV_MSIQSTATE_IDLE))
return -EINVAL;
if (pci_sun4v_msiq_setvalid(pbm->devhandle, msiqid, HV_MSIQ_VALID))
return -EINVAL;
if (pci_sun4v_msiq_setstate(pbm->devhandle, msiqid, HV_MSIQSTATE_IDLE))
return -EINVAL;
return irq;
}

2
arch/x86/kernel/cpu/perf_event_intel.c
View File

@ -1169,7 +1169,7 @@ again:
*/
c = &unconstrained;
} else if (intel_try_alt_er(event, orig_idx)) {
raw_spin_unlock(&era->lock);
raw_spin_unlock_irqrestore(&era->lock, flags);
goto again;
}
raw_spin_unlock_irqrestore(&era->lock, flags);

10
arch/x86/kvm/i8254.c
View File

@ -338,11 +338,15 @@ static enum hrtimer_restart pit_timer_fn(struct hrtimer *data)
return HRTIMER_NORESTART;
}
static void create_pit_timer(struct kvm_kpit_state *ps, u32 val, int is_period)
static void create_pit_timer(struct kvm *kvm, u32 val, int is_period)
{
struct kvm_kpit_state *ps = &kvm->arch.vpit->pit_state;
struct kvm_timer *pt = &ps->pit_timer;
s64 interval;
if (!irqchip_in_kernel(kvm))
return;
interval = muldiv64(val, NSEC_PER_SEC, KVM_PIT_FREQ);
pr_debug("create pit timer, interval is %llu nsec\n", interval);
@ -394,13 +398,13 @@ static void pit_load_count(struct kvm *kvm, int channel, u32 val)
/* FIXME: enhance mode 4 precision */
case 4:
if (!(ps->flags & KVM_PIT_FLAGS_HPET_LEGACY)) {
create_pit_timer(ps, val, 0);
create_pit_timer(kvm, val, 0);
}
break;
case 2:
case 3:
if (!(ps->flags & KVM_PIT_FLAGS_HPET_LEGACY)){
create_pit_timer(ps, val, 1);
create_pit_timer(kvm, val, 1);
}
break;
default:

19
arch/x86/kvm/x86.c
View File

@ -602,7 +602,6 @@ static void update_cpuid(struct kvm_vcpu *vcpu)
{
struct kvm_cpuid_entry2 *best;
struct kvm_lapic *apic = vcpu->arch.apic;
u32 timer_mode_mask;
best = kvm_find_cpuid_entry(vcpu, 1, 0);
if (!best)
@ -615,15 +614,12 @@ static void update_cpuid(struct kvm_vcpu *vcpu)
best->ecx |= bit(X86_FEATURE_OSXSAVE);
}
if (boot_cpu_data.x86_vendor == X86_VENDOR_INTEL &&
best->function == 0x1) {
best->ecx |= bit(X86_FEATURE_TSC_DEADLINE_TIMER);
timer_mode_mask = 3 << 17;
} else
timer_mode_mask = 1 << 17;
if (apic)
apic->lapic_timer.timer_mode_mask = timer_mode_mask;
if (apic) {
if (best->ecx & bit(X86_FEATURE_TSC_DEADLINE_TIMER))
apic->lapic_timer.timer_mode_mask = 3 << 17;
else
apic->lapic_timer.timer_mode_mask = 1 << 17;
}
}
int kvm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
@ -2135,6 +2131,9 @@ int kvm_dev_ioctl_check_extension(long ext)
case KVM_CAP_TSC_CONTROL:
r = kvm_has_tsc_control;
break;
case KVM_CAP_TSC_DEADLINE_TIMER:
r = boot_cpu_has(X86_FEATURE_TSC_DEADLINE_TIMER);
break;
default:
r = 0;
break;

2
block/blk-map.c
View File

@ -311,7 +311,7 @@ int blk_rq_map_kern(struct request_queue *q, struct request *rq, void *kbuf,
if (IS_ERR(bio))
return PTR_ERR(bio);
if (rq_data_dir(rq) == WRITE)
if (!reading)
bio->bi_rw |= REQ_WRITE;
if (do_copy)

13
block/blk-tag.c
View File

@ -282,18 +282,9 @@ EXPORT_SYMBOL(blk_queue_resize_tags);
void blk_queue_end_tag(struct request_queue *q, struct request *rq)
{
struct blk_queue_tag *bqt = q->queue_tags;
int tag = rq->tag;
unsigned tag = rq->tag; /* negative tags invalid */
BUG_ON(tag == -1);
if (unlikely(tag >= bqt->max_depth)) {
/*
* This can happen after tag depth has been reduced.
* But tag shouldn't be larger than real_max_depth.
*/
WARN_ON(tag >= bqt->real_max_depth);
return;
}
BUG_ON(tag >= bqt->real_max_depth);
list_del_init(&rq->queuelist);
rq->cmd_flags &= ~REQ_QUEUED;

12
block/cfq-iosched.c
View File

@ -1655,6 +1655,8 @@ cfq_merged_requests(struct request_queue *q, struct request *rq,
struct request *next)
{
struct cfq_queue *cfqq = RQ_CFQQ(rq);
struct cfq_data *cfqd = q->elevator->elevator_data;
/*
* reposition in fifo if next is older than rq
*/
@ -1669,6 +1671,16 @@ cfq_merged_requests(struct request_queue *q, struct request *rq,
cfq_remove_request(next);
cfq_blkiocg_update_io_merged_stats(&(RQ_CFQG(rq))->blkg,
rq_data_dir(next), rq_is_sync(next));
cfqq = RQ_CFQQ(next);
/*
* all requests of this queue are merged to other queues, delete it
* from the service tree. If it's the active_queue,
* cfq_dispatch_requests() will choose to expire it or do idle
*/
if (cfq_cfqq_on_rr(cfqq) && RB_EMPTY_ROOT(&cfqq->sort_list) &&
cfqq != cfqd->active_queue)
cfq_del_cfqq_rr(cfqd, cfqq);
}
static int cfq_allow_merge(struct request_queue *q, struct request *rq,

4
drivers/gpu/drm/i915/i915_gem_execbuffer.c
View File

@ -756,9 +756,9 @@ intel_enable_semaphores(struct drm_device *dev)
if (i915_semaphores >= 0)
return i915_semaphores;
/* Enable semaphores on SNB when IO remapping is off */
/* Disable semaphores on SNB */
if (INTEL_INFO(dev)->gen == 6)
return !intel_iommu_enabled;
return 0;
return 1;
}

8
drivers/gpu/drm/i915/intel_display.c
View File

@ -7922,13 +7922,11 @@ static bool intel_enable_rc6(struct drm_device *dev)
return 0;
/*
* Enable rc6 on Sandybridge if DMA remapping is disabled
* Disable rc6 on Sandybridge
*/
if (INTEL_INFO(dev)->gen == 6) {
DRM_DEBUG_DRIVER("Sandybridge: intel_iommu_enabled %s -- RC6 %sabled\n",
intel_iommu_enabled ? "true" : "false",
!intel_iommu_enabled ? "en" : "dis");
return !intel_iommu_enabled;
DRM_DEBUG_DRIVER("Sandybridge: RC6 disabled\n");
return 0;
}
DRM_DEBUG_DRIVER("RC6 enabled\n");
return 1;

12
drivers/gpu/drm/radeon/evergreen.c
View File

@ -3276,6 +3276,18 @@ int evergreen_init(struct radeon_device *rdev)
rdev->accel_working = false;
}
}
/* Don't start up if the MC ucode is missing on BTC parts.
* The default clocks and voltages before the MC ucode
* is loaded are not suffient for advanced operations.
*/
if (ASIC_IS_DCE5(rdev)) {
if (!rdev->mc_fw && !(rdev->flags & RADEON_IS_IGP)) {
DRM_ERROR("radeon: MC ucode required for NI+.\n");
return -EINVAL;
}
}
return 0;
}

6
drivers/gpu/drm/vmwgfx/vmwgfx_kms.c
View File

@ -1093,7 +1093,6 @@ static struct drm_framebuffer *vmw_kms_fb_create(struct drm_device *dev,
struct vmw_surface *surface = NULL;
struct vmw_dma_buffer *bo = NULL;
struct ttm_base_object *user_obj;
u64 required_size;
int ret;
/**
@ -1102,8 +1101,9 @@ static struct drm_framebuffer *vmw_kms_fb_create(struct drm_device *dev,
* requested framebuffer.
*/
required_size = mode_cmd->pitch * mode_cmd->height;
if (unlikely(required_size > (u64) dev_priv->vram_size)) {
if (!vmw_kms_validate_mode_vram(dev_priv,
mode_cmd->pitch,
mode_cmd->height)) {
DRM_ERROR("VRAM size is too small for requested mode.\n");
return ERR_PTR(-ENOMEM);
}

2
drivers/iommu/iommu.c
View File

@ -90,7 +90,7 @@ struct iommu_domain *iommu_domain_alloc(struct bus_type *bus)
if (bus == NULL || bus->iommu_ops == NULL)
return NULL;
domain = kmalloc(sizeof(*domain), GFP_KERNEL);
domain = kzalloc(sizeof(*domain), GFP_KERNEL);
if (!domain)
return NULL;

5
drivers/md/bitmap.c
View File

@ -1393,9 +1393,6 @@ void bitmap_endwrite(struct bitmap *bitmap, sector_t offset, unsigned long secto
atomic_read(&bitmap->behind_writes),
bitmap->mddev->bitmap_info.max_write_behind);
}
if (bitmap->mddev->degraded)
/* Never clear bits or update events_cleared when degraded */
success = 0;
while (sectors) {
sector_t blocks;
@ -1409,7 +1406,7 @@ void bitmap_endwrite(struct bitmap *bitmap, sector_t offset, unsigned long secto
return;
}
if (success &&
if (success && !bitmap->mddev->degraded &&
bitmap->events_cleared < bitmap->mddev->events) {
bitmap->events_cleared = bitmap->mddev->events;
bitmap->need_sync = 1;

1
drivers/md/linear.c
View File

@ -230,6 +230,7 @@ static int linear_add(struct mddev *mddev, struct md_rdev *rdev)
return -EINVAL;
rdev->raid_disk = rdev->saved_raid_disk;
rdev->saved_raid_disk = -1;
newconf = linear_conf(mddev,mddev->raid_disks+1);

3
drivers/md/md.c
View File

@ -7360,8 +7360,7 @@ static int remove_and_add_spares(struct mddev *mddev)
spares++;
md_new_event(mddev);
set_bit(MD_CHANGE_DEVS, &mddev->flags);
} else
break;
}
}
}
}

14
drivers/md/raid5.c
View File

@ -3065,11 +3065,17 @@ static void analyse_stripe(struct stripe_head *sh, struct stripe_head_state *s)
}
} else if (test_bit(In_sync, &rdev->flags))
set_bit(R5_Insync, &dev->flags);
else {
else if (sh->sector + STRIPE_SECTORS <= rdev->recovery_offset)
/* in sync if before recovery_offset */
if (sh->sector + STRIPE_SECTORS <= rdev->recovery_offset)
set_bit(R5_Insync, &dev->flags);
}
set_bit(R5_Insync, &dev->flags);
else if (test_bit(R5_UPTODATE, &dev->flags) &&
test_bit(R5_Expanded, &dev->flags))
/* If we've reshaped into here, we assume it is Insync.
* We will shortly update recovery_offset to make
* it official.
*/
set_bit(R5_Insync, &dev->flags);
if (rdev && test_bit(R5_WriteError, &dev->flags)) {
clear_bit(R5_Insync, &dev->flags);
if (!test_bit(Faulty, &rdev->flags)) {

4
drivers/media/video/gspca/gspca.c
View File

@ -838,13 +838,13 @@ static int gspca_init_transfer(struct gspca_dev *gspca_dev)
gspca_dev->usb_err = 0;
/* do the specific subdriver stuff before endpoint selection */
gspca_dev->alt = 0;
intf = usb_ifnum_to_if(gspca_dev->dev, gspca_dev->iface);
gspca_dev->alt = gspca_dev->cam.bulk ? intf->num_altsetting : 0;
if (gspca_dev->sd_desc->isoc_init) {
ret = gspca_dev->sd_desc->isoc_init(gspca_dev);
if (ret < 0)
goto unlock;
}
intf = usb_ifnum_to_if(gspca_dev->dev, gspca_dev->iface);
xfer = gspca_dev->cam.bulk ? USB_ENDPOINT_XFER_BULK
: USB_ENDPOINT_XFER_ISOC;

2
drivers/media/video/omap3isp/ispccdc.c
View File

@ -1408,7 +1408,7 @@ static void ccdc_hs_vs_isr(struct isp_ccdc_device *ccdc)
{
struct isp_pipeline *pipe =
to_isp_pipeline(&ccdc->video_out.video.entity);
struct video_device *vdev = &ccdc->subdev.devnode;
struct video_device *vdev = ccdc->subdev.devnode;
struct v4l2_event event;
memset(&event, 0, sizeof(event));

2
drivers/media/video/omap3isp/ispstat.c
View File

@ -496,7 +496,7 @@ static int isp_stat_bufs_alloc(struct ispstat *stat, u32 size)
static void isp_stat_queue_event(struct ispstat *stat, int err)
{
struct video_device *vdev = &stat->subdev.devnode;
struct video_device *vdev = stat->subdev.devnode;
struct v4l2_event event;
struct omap3isp_stat_event_status *status = (void *)event.u.data;

3
fs/btrfs/async-thread.c
View File

@ -563,8 +563,8 @@ static struct btrfs_worker_thread *find_worker(struct btrfs_workers *workers)
struct list_head *fallback;
int ret;
again:
spin_lock_irqsave(&workers->lock, flags);
again:
worker = next_worker(workers);
if (!worker) {
@ -579,6 +579,7 @@ again:
spin_unlock_irqrestore(&workers->lock, flags);
/* we're below the limit, start another worker */
ret = __btrfs_start_workers(workers);
spin_lock_irqsave(&workers->lock, flags);
if (ret)
goto fallback;
goto again;

9
fs/btrfs/inode.c
View File

@ -4590,10 +4590,6 @@ static int btrfs_add_nondir(struct btrfs_trans_handle *trans,
int err = btrfs_add_link(trans, dir, inode,
dentry->d_name.name, dentry->d_name.len,
backref, index);
if (!err) {
d_instantiate(dentry, inode);
return 0;
}
if (err > 0)
err = -EEXIST;
return err;
@ -4655,6 +4651,7 @@ static int btrfs_mknod(struct inode *dir, struct dentry *dentry,
else {
init_special_inode(inode, inode->i_mode, rdev);
btrfs_update_inode(trans, root, inode);
d_instantiate(dentry, inode);
}
out_unlock:
nr = trans->blocks_used;
@ -4722,6 +4719,7 @@ static int btrfs_create(struct inode *dir, struct dentry *dentry,
inode->i_mapping->a_ops = &btrfs_aops;
inode->i_mapping->backing_dev_info = &root->fs_info->bdi;
BTRFS_I(inode)->io_tree.ops = &btrfs_extent_io_ops;
d_instantiate(dentry, inode);
}
out_unlock:
nr = trans->blocks_used;
@ -4779,6 +4777,7 @@ static int btrfs_link(struct dentry *old_dentry, struct inode *dir,
struct dentry *parent = dentry->d_parent;
err = btrfs_update_inode(trans, root, inode);
BUG_ON(err);
d_instantiate(dentry, inode);
btrfs_log_new_name(trans, inode, NULL, parent);
}
@ -7245,6 +7244,8 @@ static int btrfs_symlink(struct inode *dir, struct dentry *dentry,
drop_inode = 1;
out_unlock:
if (!err)
d_instantiate(dentry, inode);
nr = trans->blocks_used;
btrfs_end_transaction_throttle(trans, root);
if (drop_inode) {

11
fs/fs-writeback.c
View File

@ -47,17 +47,6 @@ struct wb_writeback_work {
struct completion *done; /* set if the caller waits */
};
const char *wb_reason_name[] = {
[WB_REASON_BACKGROUND] = "background",
[WB_REASON_TRY_TO_FREE_PAGES] = "try_to_free_pages",
[WB_REASON_SYNC] = "sync",
[WB_REASON_PERIODIC] = "periodic",
[WB_REASON_LAPTOP_TIMER] = "laptop_timer",
[WB_REASON_FREE_MORE_MEM] = "free_more_memory",
[WB_REASON_FS_FREE_SPACE] = "fs_free_space",
[WB_REASON_FORKER_THREAD] = "forker_thread"
};
/*
* Include the creation of the trace points after defining the
* wb_writeback_work structure so that the definition remains local to this

11
fs/locks.c
View File

@ -1205,6 +1205,8 @@ int __break_lease(struct inode *inode, unsigned int mode)
int want_write = (mode & O_ACCMODE) != O_RDONLY;
new_fl = lease_alloc(NULL, want_write ? F_WRLCK : F_RDLCK);
if (IS_ERR(new_fl))
return PTR_ERR(new_fl);
lock_flocks();
@ -1221,12 +1223,6 @@ int __break_lease(struct inode *inode, unsigned int mode)
if (fl->fl_owner == current->files)
i_have_this_lease = 1;
if (IS_ERR(new_fl) && !i_have_this_lease
&& ((mode & O_NONBLOCK) == 0)) {
error = PTR_ERR(new_fl);
goto out;
}
break_time = 0;
if (lease_break_time > 0) {
break_time = jiffies + lease_break_time * HZ;
@ -1284,8 +1280,7 @@ restart:
out:
unlock_flocks();
if (!IS_ERR(new_fl))
locks_free_lock(new_fl);
locks_free_lock(new_fl);
return error;
}

4
fs/proc/stat.c
View File

@ -32,7 +32,7 @@ static cputime64_t get_idle_time(int cpu)
idle = kstat_cpu(cpu).cpustat.idle;
idle = cputime64_add(idle, arch_idle_time(cpu));
} else
idle = nsecs_to_jiffies64(1000 * idle_time);
idle = usecs_to_cputime64(idle_time);
return idle;
}
@ -46,7 +46,7 @@ static cputime64_t get_iowait_time(int cpu)
/* !NO_HZ so we can rely on cpustat.iowait */
iowait = kstat_cpu(cpu).cpustat.iowait;
else
iowait = nsecs_to_jiffies64(1000 * iowait_time);
iowait = usecs_to_cputime64(iowait_time);
return iowait;
}

30
fs/xfs/xfs_super.c
View File

@ -868,27 +868,6 @@ xfs_fs_dirty_inode(
XFS_I(inode)->i_update_core = 1;
}
STATIC int
xfs_log_inode(
struct xfs_inode *ip)
{
struct xfs_mount *mp = ip->i_mount;
struct xfs_trans *tp;
int error;
tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS);
error = xfs_trans_reserve(tp, 0, XFS_FSYNC_TS_LOG_RES(mp), 0, 0, 0);
if (error) {
xfs_trans_cancel(tp, 0);
return error;
}
xfs_ilock(ip, XFS_ILOCK_EXCL);
xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
return xfs_trans_commit(tp, 0);
}
STATIC int
xfs_fs_write_inode(
struct inode *inode,
@ -902,10 +881,8 @@ xfs_fs_write_inode(
if (XFS_FORCED_SHUTDOWN(mp))
return -XFS_ERROR(EIO);
if (!ip->i_update_core)
return 0;
if (wbc->sync_mode == WB_SYNC_ALL) {
if (wbc->sync_mode == WB_SYNC_ALL || wbc->for_kupdate) {
/*
* Make sure the inode has made it it into the log. Instead
* of forcing it all the way to stable storage using a
@ -913,11 +890,14 @@ xfs_fs_write_inode(
* ->sync_fs call do that for thus, which reduces the number
* of synchronous log forces dramatically.
*/
error = xfs_log_inode(ip);
error = xfs_log_dirty_inode(ip, NULL, 0);
if (error)
goto out;
return 0;
} else {
if (!ip->i_update_core)
return 0;
/*
* We make this non-blocking if the inode is contended, return
* EAGAIN to indicate to the caller that they did not succeed.

36
fs/xfs/xfs_sync.c
View File

@ -336,6 +336,32 @@ xfs_sync_fsdata(
return error;
}
int
xfs_log_dirty_inode(
struct xfs_inode *ip,
struct xfs_perag *pag,
int flags)
{
struct xfs_mount *mp = ip->i_mount;
struct xfs_trans *tp;
int error;
if (!ip->i_update_core)
return 0;
tp = xfs_trans_alloc(mp, XFS_TRANS_FSYNC_TS);
error = xfs_trans_reserve(tp, 0, XFS_FSYNC_TS_LOG_RES(mp), 0, 0, 0);
if (error) {
xfs_trans_cancel(tp, 0);
return error;
}
xfs_ilock(ip, XFS_ILOCK_EXCL);
xfs_trans_ijoin(tp, ip, XFS_ILOCK_EXCL);
xfs_trans_log_inode(tp, ip, XFS_ILOG_CORE);
return xfs_trans_commit(tp, 0);
}
/*
* When remounting a filesystem read-only or freezing the filesystem, we have
* two phases to execute. This first phase is syncing the data before we
@ -359,6 +385,16 @@ xfs_quiesce_data(
{
int error, error2 = 0;
/*
* Log all pending size and timestamp updates. The vfs writeback
* code is supposed to do this, but due to its overagressive
* livelock detection it will skip inodes where appending writes
* were written out in the first non-blocking sync phase if their
* completion took long enough that it happened after taking the
* timestamp for the cut-off in the blocking phase.
*/
xfs_inode_ag_iterator(mp, xfs_log_dirty_inode, 0);
xfs_qm_sync(mp, SYNC_TRYLOCK);
xfs_qm_sync(mp, SYNC_WAIT);

2
fs/xfs/xfs_sync.h
View File

@ -34,6 +34,8 @@ void xfs_quiesce_attr(struct xfs_mount *mp);
void xfs_flush_inodes(struct xfs_inode *ip);
int xfs_log_dirty_inode(struct xfs_inode *ip, struct xfs_perag *pag, int flags);
int xfs_reclaim_inodes(struct xfs_mount *mp, int mode);
int xfs_reclaim_inodes_count(struct xfs_mount *mp);
void xfs_reclaim_inodes_nr(struct xfs_mount *mp, int nr_to_scan);

1
include/asm-generic/cputime.h
View File

@ -40,6 +40,7 @@ typedef u64 cputime64_t;
*/
#define cputime_to_usecs(__ct) jiffies_to_usecs(__ct)
#define usecs_to_cputime(__msecs) usecs_to_jiffies(__msecs)
#define usecs_to_cputime64(__msecs) nsecs_to_jiffies64((__msecs) * 1000)
/*
* Convert cputime to seconds and back.

1
include/linux/kvm.h
View File

@ -557,6 +557,7 @@ struct kvm_ppc_pvinfo {
#define KVM_CAP_MAX_VCPUS 66 /* returns max vcpus per vm */
#define KVM_CAP_PPC_PAPR 68
#define KVM_CAP_S390_GMAP 71
#define KVM_CAP_TSC_DEADLINE_TIMER 72
#ifdef KVM_CAP_IRQ_ROUTING

36
include/linux/lglock.h
View File

@ -22,6 +22,7 @@
#include <linux/spinlock.h>
#include <linux/lockdep.h>
#include <linux/percpu.h>
#include <linux/cpu.h>
/* can make br locks by using local lock for read side, global lock for write */
#define br_lock_init(name) name##_lock_init()
@ -72,9 +73,31 @@
#define DEFINE_LGLOCK(name) \
\
DEFINE_SPINLOCK(name##_cpu_lock); \
cpumask_t name##_cpus __read_mostly; \
DEFINE_PER_CPU(arch_spinlock_t, name##_lock); \
DEFINE_LGLOCK_LOCKDEP(name); \
\
static int \
name##_lg_cpu_callback(struct notifier_block *nb, \
unsigned long action, void *hcpu) \
{ \
switch (action & ~CPU_TASKS_FROZEN) { \
case CPU_UP_PREPARE: \
spin_lock(&name##_cpu_lock); \
cpu_set((unsigned long)hcpu, name##_cpus); \
spin_unlock(&name##_cpu_lock); \
break; \
case CPU_UP_CANCELED: case CPU_DEAD: \
spin_lock(&name##_cpu_lock); \
cpu_clear((unsigned long)hcpu, name##_cpus); \
spin_unlock(&name##_cpu_lock); \
} \
return NOTIFY_OK; \
} \
static struct notifier_block name##_lg_cpu_notifier = { \
.notifier_call = name##_lg_cpu_callback, \
}; \
void name##_lock_init(void) { \
int i; \
LOCKDEP_INIT_MAP(&name##_lock_dep_map, #name, &name##_lock_key, 0); \
@ -83,6 +106,11 @@
lock = &per_cpu(name##_lock, i); \
*lock = (arch_spinlock_t)__ARCH_SPIN_LOCK_UNLOCKED; \
} \
register_hotcpu_notifier(&name##_lg_cpu_notifier); \
get_online_cpus(); \
for_each_online_cpu(i) \
cpu_set(i, name##_cpus); \
put_online_cpus(); \
} \
EXPORT_SYMBOL(name##_lock_init); \
\
@ -124,9 +152,9 @@
\
void name##_global_lock_online(void) { \
int i; \
preempt_disable(); \
spin_lock(&name##_cpu_lock); \
rwlock_acquire(&name##_lock_dep_map, 0, 0, _RET_IP_); \
for_each_online_cpu(i) { \
for_each_cpu(i, &name##_cpus) { \
arch_spinlock_t *lock; \
lock = &per_cpu(name##_lock, i); \
arch_spin_lock(lock); \
@ -137,12 +165,12 @@
void name##_global_unlock_online(void) { \
int i; \
rwlock_release(&name##_lock_dep_map, 1, _RET_IP_); \
for_each_online_cpu(i) { \
for_each_cpu(i, &name##_cpus) { \
arch_spinlock_t *lock; \
lock = &per_cpu(name##_lock, i); \
arch_spin_unlock(lock); \
} \
preempt_enable(); \
spin_unlock(&name##_cpu_lock); \
} \
EXPORT_SYMBOL(name##_global_unlock_online); \
\

15
include/trace/events/writeback.h
View File

@ -21,6 +21,16 @@
{I_REFERENCED, "I_REFERENCED"} \
)
#define WB_WORK_REASON \
{WB_REASON_BACKGROUND, "background"}, \
{WB_REASON_TRY_TO_FREE_PAGES, "try_to_free_pages"}, \
{WB_REASON_SYNC, "sync"}, \
{WB_REASON_PERIODIC, "periodic"}, \
{WB_REASON_LAPTOP_TIMER, "laptop_timer"}, \
{WB_REASON_FREE_MORE_MEM, "free_more_memory"}, \
{WB_REASON_FS_FREE_SPACE, "fs_free_space"}, \
{WB_REASON_FORKER_THREAD, "forker_thread"}
struct wb_writeback_work;
DECLARE_EVENT_CLASS(writeback_work_class,
@ -55,7 +65,7 @@ DECLARE_EVENT_CLASS(writeback_work_class,
__entry->for_kupdate,
__entry->range_cyclic,
__entry->for_background,
wb_reason_name[__entry->reason]
__print_symbolic(__entry->reason, WB_WORK_REASON)
)
);
#define DEFINE_WRITEBACK_WORK_EVENT(name) \
@ -184,7 +194,8 @@ TRACE_EVENT(writeback_queue_io,
__entry->older, /* older_than_this in jiffies */
__entry->age, /* older_than_this in relative milliseconds */
__entry->moved,
wb_reason_name[__entry->reason])
__print_symbolic(__entry->reason, WB_WORK_REASON)
)
);
TRACE_EVENT(global_dirty_state,

2
mm/hugetlb.c
View File

@ -901,7 +901,6 @@ retry:
h->resv_huge_pages += delta;
ret = 0;
spin_unlock(&hugetlb_lock);
/* Free the needed pages to the hugetlb pool */
list_for_each_entry_safe(page, tmp, &surplus_list, lru) {
if ((--needed) < 0)
@ -915,6 +914,7 @@ retry:
VM_BUG_ON(page_count(page));
enqueue_huge_page(h, page);
}
spin_unlock(&hugetlb_lock);
/* Free unnecessary surplus pages to the buddy allocator */
free:

11
mm/mempolicy.c
View File

@ -636,6 +636,7 @@ static int mbind_range(struct mm_struct *mm, unsigned long start,
struct vm_area_struct *prev;
struct vm_area_struct *vma;
int err = 0;
pgoff_t pgoff;
unsigned long vmstart;
unsigned long vmend;
@ -643,13 +644,21 @@ static int mbind_range(struct mm_struct *mm, unsigned long start,
if (!vma || vma->vm_start > start)
return -EFAULT;
if (start > vma->vm_start)
prev = vma;
for (; vma && vma->vm_start < end; prev = vma, vma = next) {
next = vma->vm_next;
vmstart = max(start, vma->vm_start);
vmend = min(end, vma->vm_end);
if (mpol_equal(vma_policy(vma), new_pol))
continue;
pgoff = vma->vm_pgoff +
((vmstart - vma->vm_start) >> PAGE_SHIFT);
prev = vma_merge(mm, prev, vmstart, vmend, vma->vm_flags,
vma->anon_vma, vma->vm_file, vma->vm_pgoff,
vma->anon_vma, vma->vm_file, pgoff,
new_pol);
if (prev) {
vma = prev;

18
net/netfilter/nf_conntrack_netlink.c
View File

@ -1367,12 +1367,15 @@ ctnetlink_create_conntrack(struct net *net, u16 zone,
nf_ct_protonum(ct));
if (helper == NULL) {
rcu_read_unlock();
spin_unlock_bh(&nf_conntrack_lock);
#ifdef CONFIG_MODULES
if (request_module("nfct-helper-%s", helpname) < 0) {
spin_lock_bh(&nf_conntrack_lock);
err = -EOPNOTSUPP;
goto err1;
}
spin_lock_bh(&nf_conntrack_lock);
rcu_read_lock();
helper = __nf_conntrack_helper_find(helpname,
nf_ct_l3num(ct),
@ -1880,25 +1883,30 @@ ctnetlink_get_expect(struct sock *ctnl, struct sk_buff *skb,
err = -ENOMEM;
skb2 = nlmsg_new(NLMSG_DEFAULT_SIZE, GFP_KERNEL);
if (skb2 == NULL)
if (skb2 == NULL) {
nf_ct_expect_put(exp);
goto out;
}
rcu_read_lock();
err = ctnetlink_exp_fill_info(skb2, NETLINK_CB(skb).pid,
nlh->nlmsg_seq, IPCTNL_MSG_EXP_NEW, exp);
rcu_read_unlock();
nf_ct_expect_put(exp);
if (err <= 0)
goto free;
nf_ct_expect_put(exp);
err = netlink_unicast(ctnl, skb2, NETLINK_CB(skb).pid, MSG_DONTWAIT);
if (err < 0)
goto out;
return netlink_unicast(ctnl, skb2, NETLINK_CB(skb).pid, MSG_DONTWAIT);
return 0;
free:
kfree_skb(skb2);
out:
nf_ct_expect_put(exp);
return err;
/* this avoids a loop in nfnetlink. */
return err == -EAGAIN ? -ENOBUFS : err;
}
static int

6
net/packet/af_packet.c
View File

@ -2453,8 +2453,12 @@ static int packet_do_bind(struct sock *sk, struct net_device *dev, __be16 protoc
{
struct packet_sock *po = pkt_sk(sk);
if (po->fanout)
if (po->fanout) {
if (dev)
dev_put(dev);
return -EINVAL;
}
lock_sock(sk);

7
net/sched/sch_netem.c
View File

@ -532,7 +532,7 @@ static int get_dist_table(struct Qdisc *sch, const struct nlattr *attr)
return -EINVAL;
s = sizeof(struct disttable) + n * sizeof(s16);
d = kmalloc(s, GFP_KERNEL);
d = kmalloc(s, GFP_KERNEL | __GFP_NOWARN);
if (!d)
d = vmalloc(s);
if (!d)
@ -545,9 +545,10 @@ static int get_dist_table(struct Qdisc *sch, const struct nlattr *attr)
root_lock = qdisc_root_sleeping_lock(sch);
spin_lock_bh(root_lock);
dist_free(q->delay_dist);
q->delay_dist = d;
swap(q->delay_dist, d);
spin_unlock_bh(root_lock);
dist_free(d);
return 0;
}

5
scripts/kconfig/Makefile
View File

@ -60,8 +60,8 @@ update-po-config: $(obj)/kxgettext $(obj)/gconf.glade.h
--directory=$(srctree) --directory=$(objtree) \
--output $(obj)/config.pot
$(Q)sed -i s/CHARSET/UTF-8/ $(obj)/config.pot
$(Q)ln -fs Kconfig.x86 arch/um/Kconfig
$(Q)(for i in `ls $(srctree)/arch/*/Kconfig`; \
$(Q)(for i in `ls $(srctree)/arch/*/Kconfig \
$(srctree)/arch/*/um/Kconfig`; \
do \
echo " GEN $$i"; \
$(obj)/kxgettext $$i \
@ -69,7 +69,6 @@ update-po-config: $(obj)/kxgettext $(obj)/gconf.glade.h
done )
$(Q)msguniq --sort-by-file --to-code=UTF-8 $(obj)/config.pot \
--output $(obj)/linux.pot
$(Q)rm -f $(srctree)/arch/um/Kconfig
$(Q)rm -f $(obj)/config.pot
PHONY += allnoconfig allyesconfig allmodconfig alldefconfig randconfig

93
virt/kvm/assigned-dev.c
View File

@ -17,6 +17,8 @@
#include <linux/pci.h>
#include <linux/interrupt.h>
#include <linux/slab.h>
#include <linux/namei.h>
#include <linux/fs.h>
#include "irq.h"
static struct kvm_assigned_dev_kernel *kvm_find_assigned_dev(struct list_head *head,
@ -480,12 +482,76 @@ out:
return r;
}
/*
* We want to test whether the caller has been granted permissions to
* use this device. To be able to configure and control the device,
* the user needs access to PCI configuration space and BAR resources.
* These are accessed through PCI sysfs. PCI config space is often
* passed to the process calling this ioctl via file descriptor, so we
* can't rely on access to that file. We can check for permissions
* on each of the BAR resource files, which is a pretty clear
* indicator that the user has been granted access to the device.
*/
static int probe_sysfs_permissions(struct pci_dev *dev)
{
#ifdef CONFIG_SYSFS
int i;
bool bar_found = false;
for (i = PCI_STD_RESOURCES; i <= PCI_STD_RESOURCE_END; i++) {
char *kpath, *syspath;
struct path path;
struct inode *inode;
int r;
if (!pci_resource_len(dev, i))
continue;
kpath = kobject_get_path(&dev->dev.kobj, GFP_KERNEL);
if (!kpath)
return -ENOMEM;
/* Per sysfs-rules, sysfs is always at /sys */
syspath = kasprintf(GFP_KERNEL, "/sys%s/resource%d", kpath, i);
kfree(kpath);
if (!syspath)
return -ENOMEM;
r = kern_path(syspath, LOOKUP_FOLLOW, &path);
kfree(syspath);
if (r)
return r;
inode = path.dentry->d_inode;
r = inode_permission(inode, MAY_READ | MAY_WRITE | MAY_ACCESS);
path_put(&path);
if (r)
return r;
bar_found = true;
}
/* If no resources, probably something special */
if (!bar_found)
return -EPERM;
return 0;
#else
return -EINVAL; /* No way to control the device without sysfs */
#endif
}
static int kvm_vm_ioctl_assign_device(struct kvm *kvm,
struct kvm_assigned_pci_dev *assigned_dev)
{
int r = 0, idx;
struct kvm_assigned_dev_kernel *match;
struct pci_dev *dev;
u8 header_type;
if (!(assigned_dev->flags & KVM_DEV_ASSIGN_ENABLE_IOMMU))
return -EINVAL;
mutex_lock(&kvm->lock);
idx = srcu_read_lock(&kvm->srcu);
@ -513,6 +579,18 @@ static int kvm_vm_ioctl_assign_device(struct kvm *kvm,
r = -EINVAL;
goto out_free;
}
/* Don't allow bridges to be assigned */
pci_read_config_byte(dev, PCI_HEADER_TYPE, &header_type);
if ((header_type & PCI_HEADER_TYPE) != PCI_HEADER_TYPE_NORMAL) {
r = -EPERM;
goto out_put;
}
r = probe_sysfs_permissions(dev);
if (r)
goto out_put;
if (pci_enable_device(dev)) {
printk(KERN_INFO "%s: Could not enable PCI device\n", __func__);
r = -EBUSY;
@ -544,16 +622,14 @@ static int kvm_vm_ioctl_assign_device(struct kvm *kvm,
list_add(&match->list, &kvm->arch.assigned_dev_head);
if (assigned_dev->flags & KVM_DEV_ASSIGN_ENABLE_IOMMU) {
if (!kvm->arch.iommu_domain) {
r = kvm_iommu_map_guest(kvm);
if (r)
goto out_list_del;
}
r = kvm_assign_device(kvm, match);
if (!kvm->arch.iommu_domain) {
r = kvm_iommu_map_guest(kvm);
if (r)
goto out_list_del;
}
r = kvm_assign_device(kvm, match);
if (r)
goto out_list_del;
out:
srcu_read_unlock(&kvm->srcu, idx);
@ -593,8 +669,7 @@ static int kvm_vm_ioctl_deassign_device(struct kvm *kvm,
goto out;
}
if (match->flags & KVM_DEV_ASSIGN_ENABLE_IOMMU)
kvm_deassign_device(kvm, match);
kvm_deassign_device(kvm, match);
kvm_free_assigned_device(kvm, match);