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-rw-r--r--include/crypto/internal/blake2s.h40
-rw-r--r--include/drm/drm_bridge.h7
-rw-r--r--include/drm/drm_buddy.h17
-rw-r--r--include/drm/drm_connector.h11
-rw-r--r--include/drm/drm_format_helper.h4
-rw-r--r--include/drm/drm_gem_shmem_helper.h2
-rw-r--r--include/drm/drm_mode_config.h18
-rw-r--r--include/drm/drm_panel.h8
-rw-r--r--include/drm/drm_plane.h3
-rw-r--r--include/drm/gpu_scheduler.h3
-rw-r--r--include/drm/ttm/ttm_resource.h12
-rw-r--r--include/dt-bindings/clock/dra7.h14
-rw-r--r--include/linux/ata.h2
-rw-r--r--include/linux/blkdev.h3
-rw-r--r--include/linux/bpf.h9
-rw-r--r--include/linux/ceph/libceph.h1
-rw-r--r--include/linux/ceph/messenger.h5
-rw-r--r--include/linux/compiler.h21
-rw-r--r--include/linux/cpufreq.h3
-rw-r--r--include/linux/dma-fence-array.h15
-rw-r--r--include/linux/dma-fence-chain.h18
-rw-r--r--include/linux/dma-fence.h38
-rw-r--r--include/linux/dma-mapping.h8
-rw-r--r--include/linux/dma-resv.h13
-rw-r--r--include/linux/fb.h3
-rw-r--r--include/linux/fs.h2
-rw-r--r--include/linux/hyperv.h1
-rw-r--r--include/linux/if_vlan.h6
-rw-r--r--include/linux/iomap.h2
-rw-r--r--include/linux/jbd2.h13
-rw-r--r--include/linux/kfence.h2
-rw-r--r--include/linux/kvm_host.h112
-rw-r--r--include/linux/libata.h1
-rw-r--r--include/linux/memcontrol.h5
-rw-r--r--include/linux/netdevice.h2
-rw-r--r--include/linux/netfs.h7
-rw-r--r--include/linux/nfs.h8
-rw-r--r--include/linux/nfs_fs.h1
-rw-r--r--include/linux/nvme-tcp.h1
-rw-r--r--include/linux/nvmem-provider.h4
-rw-r--r--include/linux/page_table_check.h19
-rw-r--r--include/linux/pgtable.h1
-rw-r--r--include/linux/sched.h1
-rw-r--r--include/linux/sched/task.h4
-rw-r--r--include/linux/slab.h3
-rw-r--r--include/linux/string_helpers.h20
-rw-r--r--include/linux/suspend.h4
-rw-r--r--include/linux/trace_events.h22
-rw-r--r--include/net/addrconf.h2
-rw-r--r--include/net/ax25.h12
-rw-r--r--include/net/bond_3ad.h2
-rw-r--r--include/net/checksum.h52
-rw-r--r--include/net/dsa.h1
-rw-r--r--include/net/dst_metadata.h14
-rw-r--r--include/net/ip6_fib.h10
-rw-r--r--include/net/ipv6.h5
-rw-r--r--include/net/neighbour.h18
-rw-r--r--include/net/netfilter/nf_tables.h2
-rw-r--r--include/net/netfilter/nf_tables_offload.h2
-rw-r--r--include/net/netns/ipv6.h3
-rw-r--r--include/net/sock.h4
-rw-r--r--include/sound/pcm.h15
-rw-r--r--include/uapi/drm/amdgpu_drm.h21
-rw-r--r--include/uapi/drm/drm_mode.h88
-rw-r--r--include/uapi/linux/kfd_ioctl.h94
-rw-r--r--include/uapi/linux/kvm.h7
-rw-r--r--include/uapi/linux/netfilter/nf_conntrack_common.h2
-rw-r--r--include/uapi/linux/perf_event.h2
-rw-r--r--include/uapi/linux/smc_diag.h11
-rw-r--r--include/uapi/sound/asound.h4
-rw-r--r--include/uapi/xen/gntdev.h8
-rw-r--r--include/xen/xenbus_dev.h2
72 files changed, 678 insertions, 222 deletions
diff --git a/include/crypto/internal/blake2s.h b/include/crypto/internal/blake2s.h
index d39cfa0d333e..52363eee2b20 100644
--- a/include/crypto/internal/blake2s.h
+++ b/include/crypto/internal/blake2s.h
@@ -24,14 +24,11 @@ static inline void blake2s_set_lastblock(struct blake2s_state *state)
state->f[0] = -1;
}
-typedef void (*blake2s_compress_t)(struct blake2s_state *state,
- const u8 *block, size_t nblocks, u32 inc);
-
/* Helper functions for BLAKE2s shared by the library and shash APIs */
-static inline void __blake2s_update(struct blake2s_state *state,
- const u8 *in, size_t inlen,
- blake2s_compress_t compress)
+static __always_inline void
+__blake2s_update(struct blake2s_state *state, const u8 *in, size_t inlen,
+ bool force_generic)
{
const size_t fill = BLAKE2S_BLOCK_SIZE - state->buflen;
@@ -39,7 +36,12 @@ static inline void __blake2s_update(struct blake2s_state *state,
return;
if (inlen > fill) {
memcpy(state->buf + state->buflen, in, fill);
- (*compress)(state, state->buf, 1, BLAKE2S_BLOCK_SIZE);
+ if (force_generic)
+ blake2s_compress_generic(state, state->buf, 1,
+ BLAKE2S_BLOCK_SIZE);
+ else
+ blake2s_compress(state, state->buf, 1,
+ BLAKE2S_BLOCK_SIZE);
state->buflen = 0;
in += fill;
inlen -= fill;
@@ -47,7 +49,12 @@ static inline void __blake2s_update(struct blake2s_state *state,
if (inlen > BLAKE2S_BLOCK_SIZE) {
const size_t nblocks = DIV_ROUND_UP(inlen, BLAKE2S_BLOCK_SIZE);
/* Hash one less (full) block than strictly possible */
- (*compress)(state, in, nblocks - 1, BLAKE2S_BLOCK_SIZE);
+ if (force_generic)
+ blake2s_compress_generic(state, in, nblocks - 1,
+ BLAKE2S_BLOCK_SIZE);
+ else
+ blake2s_compress(state, in, nblocks - 1,
+ BLAKE2S_BLOCK_SIZE);
in += BLAKE2S_BLOCK_SIZE * (nblocks - 1);
inlen -= BLAKE2S_BLOCK_SIZE * (nblocks - 1);
}
@@ -55,13 +62,16 @@ static inline void __blake2s_update(struct blake2s_state *state,
state->buflen += inlen;
}
-static inline void __blake2s_final(struct blake2s_state *state, u8 *out,
- blake2s_compress_t compress)
+static __always_inline void
+__blake2s_final(struct blake2s_state *state, u8 *out, bool force_generic)
{
blake2s_set_lastblock(state);
memset(state->buf + state->buflen, 0,
BLAKE2S_BLOCK_SIZE - state->buflen); /* Padding */
- (*compress)(state, state->buf, 1, state->buflen);
+ if (force_generic)
+ blake2s_compress_generic(state, state->buf, 1, state->buflen);
+ else
+ blake2s_compress(state, state->buf, 1, state->buflen);
cpu_to_le32_array(state->h, ARRAY_SIZE(state->h));
memcpy(out, state->h, state->outlen);
}
@@ -99,20 +109,20 @@ static inline int crypto_blake2s_init(struct shash_desc *desc)
static inline int crypto_blake2s_update(struct shash_desc *desc,
const u8 *in, unsigned int inlen,
- blake2s_compress_t compress)
+ bool force_generic)
{
struct blake2s_state *state = shash_desc_ctx(desc);
- __blake2s_update(state, in, inlen, compress);
+ __blake2s_update(state, in, inlen, force_generic);
return 0;
}
static inline int crypto_blake2s_final(struct shash_desc *desc, u8 *out,
- blake2s_compress_t compress)
+ bool force_generic)
{
struct blake2s_state *state = shash_desc_ctx(desc);
- __blake2s_final(state, out, compress);
+ __blake2s_final(state, out, force_generic);
return 0;
}
diff --git a/include/drm/drm_bridge.h b/include/drm/drm_bridge.h
index 061d87313fac..f27b4060faa2 100644
--- a/include/drm/drm_bridge.h
+++ b/include/drm/drm_bridge.h
@@ -649,6 +649,13 @@ struct drm_bridge_funcs {
* the DRM_BRIDGE_OP_HPD flag in their &drm_bridge->ops.
*/
void (*hpd_disable)(struct drm_bridge *bridge);
+
+ /**
+ * @debugfs_init:
+ *
+ * Allows bridges to create bridge-specific debugfs files.
+ */
+ void (*debugfs_init)(struct drm_bridge *bridge, struct dentry *root);
};
/**
diff --git a/include/drm/drm_buddy.h b/include/drm/drm_buddy.h
index f524db152413..572077ff8ae7 100644
--- a/include/drm/drm_buddy.h
+++ b/include/drm/drm_buddy.h
@@ -22,6 +22,9 @@
start__ >= max__ || size__ > max__ - start__; \
})
+#define DRM_BUDDY_RANGE_ALLOCATION (1 << 0)
+#define DRM_BUDDY_TOPDOWN_ALLOCATION (1 << 1)
+
struct drm_buddy_block {
#define DRM_BUDDY_HEADER_OFFSET GENMASK_ULL(63, 12)
#define DRM_BUDDY_HEADER_STATE GENMASK_ULL(11, 10)
@@ -132,11 +135,17 @@ int drm_buddy_init(struct drm_buddy *mm, u64 size, u64 chunk_size);
void drm_buddy_fini(struct drm_buddy *mm);
struct drm_buddy_block *
-drm_buddy_alloc_blocks(struct drm_buddy *mm, unsigned int order);
+drm_get_buddy(struct drm_buddy_block *block);
+
+int drm_buddy_alloc_blocks(struct drm_buddy *mm,
+ u64 start, u64 end, u64 size,
+ u64 min_page_size,
+ struct list_head *blocks,
+ unsigned long flags);
-int drm_buddy_alloc_range(struct drm_buddy *mm,
- struct list_head *blocks,
- u64 start, u64 size);
+int drm_buddy_block_trim(struct drm_buddy *mm,
+ u64 new_size,
+ struct list_head *blocks);
void drm_buddy_free_block(struct drm_buddy *mm, struct drm_buddy_block *block);
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 64cf5f88c05b..5166186146f4 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -592,13 +592,13 @@ struct drm_display_info {
bool rgb_quant_range_selectable;
/**
- * @edid_hdmi_dc_rgb444_modes: Mask of supported hdmi deep color modes
+ * @edid_hdmi_rgb444_dc_modes: Mask of supported hdmi deep color modes
* in RGB 4:4:4. Even more stuff redundant with @bus_formats.
*/
u8 edid_hdmi_rgb444_dc_modes;
/**
- * @edid_hdmi_dc_ycbcr444_modes: Mask of supported hdmi deep color
+ * @edid_hdmi_ycbcr444_dc_modes: Mask of supported hdmi deep color
* modes in YCbCr 4:4:4. Even more stuff redundant with @bus_formats.
*/
u8 edid_hdmi_ycbcr444_dc_modes;
@@ -1142,6 +1142,13 @@ struct drm_connector_funcs {
* has been received from a source outside the display driver / device.
*/
void (*oob_hotplug_event)(struct drm_connector *connector);
+
+ /**
+ * @debugfs_init:
+ *
+ * Allows connectors to create connector-specific debugfs files.
+ */
+ void (*debugfs_init)(struct drm_connector *connector, struct dentry *root);
};
/**
diff --git a/include/drm/drm_format_helper.h b/include/drm/drm_format_helper.h
index b30ed5de0a33..0b0937c0b2f6 100644
--- a/include/drm/drm_format_helper.h
+++ b/include/drm/drm_format_helper.h
@@ -43,4 +43,8 @@ int drm_fb_blit_toio(void __iomem *dst, unsigned int dst_pitch, uint32_t dst_for
const void *vmap, const struct drm_framebuffer *fb,
const struct drm_rect *rect);
+void drm_fb_xrgb8888_to_mono_reversed(void *dst, unsigned int dst_pitch, const void *src,
+ const struct drm_framebuffer *fb,
+ const struct drm_rect *clip);
+
#endif /* __LINUX_DRM_FORMAT_HELPER_H */
diff --git a/include/drm/drm_gem_shmem_helper.h b/include/drm/drm_gem_shmem_helper.h
index 68347b63fc71..d0a57853c188 100644
--- a/include/drm/drm_gem_shmem_helper.h
+++ b/include/drm/drm_gem_shmem_helper.h
@@ -137,6 +137,8 @@ struct sg_table *drm_gem_shmem_get_pages_sgt(struct drm_gem_shmem_object *shmem)
void drm_gem_shmem_print_info(const struct drm_gem_shmem_object *shmem,
struct drm_printer *p, unsigned int indent);
+extern const struct vm_operations_struct drm_gem_shmem_vm_ops;
+
/*
* GEM object functions
*/
diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h
index 91ca575a78de..6b5e01295348 100644
--- a/include/drm/drm_mode_config.h
+++ b/include/drm/drm_mode_config.h
@@ -918,20 +918,14 @@ struct drm_mode_config {
bool async_page_flip;
/**
- * @allow_fb_modifiers:
+ * @fb_modifiers_not_supported:
*
- * Whether the driver supports fb modifiers in the ADDFB2.1 ioctl call.
- * Note that drivers should not set this directly, it is automatically
- * set in drm_universal_plane_init().
- *
- * IMPORTANT:
- *
- * If this is set the driver must fill out the full implicit modifier
- * information in their &drm_mode_config_funcs.fb_create hook for legacy
- * userspace which does not set modifiers. Otherwise the GETFB2 ioctl is
- * broken for modifier aware userspace.
+ * When this flag is set, the DRM device will not expose modifier
+ * support to userspace. This is only used by legacy drivers that infer
+ * the buffer layout through heuristics without using modifiers. New
+ * drivers shall not set fhis flag.
*/
- bool allow_fb_modifiers;
+ bool fb_modifiers_not_supported;
/**
* @normalize_zpos:
diff --git a/include/drm/drm_panel.h b/include/drm/drm_panel.h
index 4602f833eb51..1ba2d424a53f 100644
--- a/include/drm/drm_panel.h
+++ b/include/drm/drm_panel.h
@@ -29,6 +29,7 @@
#include <linux/list.h>
struct backlight_device;
+struct dentry;
struct device_node;
struct drm_connector;
struct drm_device;
@@ -125,6 +126,13 @@ struct drm_panel_funcs {
*/
int (*get_timings)(struct drm_panel *panel, unsigned int num_timings,
struct display_timing *timings);
+
+ /**
+ * @debugfs_init:
+ *
+ * Allows panels to create panels-specific debugfs files.
+ */
+ void (*debugfs_init)(struct drm_panel *panel, struct dentry *root);
};
/**
diff --git a/include/drm/drm_plane.h b/include/drm/drm_plane.h
index 06759badf99f..2628c7cde2da 100644
--- a/include/drm/drm_plane.h
+++ b/include/drm/drm_plane.h
@@ -803,6 +803,9 @@ void *__drmm_universal_plane_alloc(struct drm_device *dev,
*
* The @drm_plane_funcs.destroy hook must be NULL.
*
+ * Drivers that only support the DRM_FORMAT_MOD_LINEAR modifier support may set
+ * @format_modifiers to NULL. The plane will advertise the linear modifier.
+ *
* Returns:
* Pointer to new plane, or ERR_PTR on failure.
*/
diff --git a/include/drm/gpu_scheduler.h b/include/drm/gpu_scheduler.h
index bbc22fad8d80..944f83ef9f2e 100644
--- a/include/drm/gpu_scheduler.h
+++ b/include/drm/gpu_scheduler.h
@@ -457,13 +457,14 @@ struct drm_gpu_scheduler {
atomic_t _score;
bool ready;
bool free_guilty;
+ struct device *dev;
};
int drm_sched_init(struct drm_gpu_scheduler *sched,
const struct drm_sched_backend_ops *ops,
uint32_t hw_submission, unsigned hang_limit,
long timeout, struct workqueue_struct *timeout_wq,
- atomic_t *score, const char *name);
+ atomic_t *score, const char *name, struct device *dev);
void drm_sched_fini(struct drm_gpu_scheduler *sched);
int drm_sched_job_init(struct drm_sched_job *job,
diff --git a/include/drm/ttm/ttm_resource.h b/include/drm/ttm/ttm_resource.h
index 4fd727b52da1..0f1d55262c68 100644
--- a/include/drm/ttm/ttm_resource.h
+++ b/include/drm/ttm/ttm_resource.h
@@ -130,10 +130,15 @@ struct ttm_resource_manager {
struct dma_fence *move;
/*
- * Protected by the global->lru_lock.
+ * Protected by the bdev->lru_lock.
*/
-
struct list_head lru[TTM_MAX_BO_PRIORITY];
+
+ /**
+ * @usage: How much of the resources are used, protected by the
+ * bdev->lru_lock.
+ */
+ uint64_t usage;
};
/**
@@ -278,11 +283,12 @@ void ttm_resource_set_bo(struct ttm_resource *res,
void ttm_resource_manager_init(struct ttm_resource_manager *man,
struct ttm_device *bdev,
- unsigned long p_size);
+ uint64_t size);
int ttm_resource_manager_evict_all(struct ttm_device *bdev,
struct ttm_resource_manager *man);
+uint64_t ttm_resource_manager_usage(struct ttm_resource_manager *man);
void ttm_resource_manager_debug(struct ttm_resource_manager *man,
struct drm_printer *p);
diff --git a/include/dt-bindings/clock/dra7.h b/include/dt-bindings/clock/dra7.h
index 7d57063b8a65..29ff6b895848 100644
--- a/include/dt-bindings/clock/dra7.h
+++ b/include/dt-bindings/clock/dra7.h
@@ -84,17 +84,10 @@
#define DRA7_L3_MAIN_2_CLKCTRL DRA7_CLKCTRL_INDEX(0x20)
#define DRA7_L3_INSTR_CLKCTRL DRA7_CLKCTRL_INDEX(0x28)
-/* iva clocks */
-#define DRA7_IVA_CLKCTRL DRA7_CLKCTRL_INDEX(0x20)
-#define DRA7_SL2IF_CLKCTRL DRA7_CLKCTRL_INDEX(0x28)
-
/* dss clocks */
#define DRA7_DSS_CORE_CLKCTRL DRA7_CLKCTRL_INDEX(0x20)
#define DRA7_BB2D_CLKCTRL DRA7_CLKCTRL_INDEX(0x30)
-/* gpu clocks */
-#define DRA7_GPU_CLKCTRL DRA7_CLKCTRL_INDEX(0x20)
-
/* l3init clocks */
#define DRA7_MMC1_CLKCTRL DRA7_CLKCTRL_INDEX(0x28)
#define DRA7_MMC2_CLKCTRL DRA7_CLKCTRL_INDEX(0x30)
@@ -267,10 +260,17 @@
#define DRA7_L3INSTR_L3_MAIN_2_CLKCTRL DRA7_CLKCTRL_INDEX(0x20)
#define DRA7_L3INSTR_L3_INSTR_CLKCTRL DRA7_CLKCTRL_INDEX(0x28)
+/* iva clocks */
+#define DRA7_IVA_CLKCTRL DRA7_CLKCTRL_INDEX(0x20)
+#define DRA7_SL2IF_CLKCTRL DRA7_CLKCTRL_INDEX(0x28)
+
/* dss clocks */
#define DRA7_DSS_DSS_CORE_CLKCTRL DRA7_CLKCTRL_INDEX(0x20)
#define DRA7_DSS_BB2D_CLKCTRL DRA7_CLKCTRL_INDEX(0x30)
+/* gpu clocks */
+#define DRA7_GPU_CLKCTRL DRA7_CLKCTRL_INDEX(0x20)
+
/* l3init clocks */
#define DRA7_L3INIT_MMC1_CLKCTRL DRA7_CLKCTRL_INDEX(0x28)
#define DRA7_L3INIT_MMC2_CLKCTRL DRA7_CLKCTRL_INDEX(0x30)
diff --git a/include/linux/ata.h b/include/linux/ata.h
index 199e47e97d64..21292b5bbb55 100644
--- a/include/linux/ata.h
+++ b/include/linux/ata.h
@@ -324,12 +324,12 @@ enum {
ATA_LOG_NCQ_NON_DATA = 0x12,
ATA_LOG_NCQ_SEND_RECV = 0x13,
ATA_LOG_IDENTIFY_DEVICE = 0x30,
+ ATA_LOG_CONCURRENT_POSITIONING_RANGES = 0x47,
/* Identify device log pages: */
ATA_LOG_SECURITY = 0x06,
ATA_LOG_SATA_SETTINGS = 0x08,
ATA_LOG_ZONED_INFORMATION = 0x09,
- ATA_LOG_CONCURRENT_POSITIONING_RANGES = 0x47,
/* Identify device SATA settings log:*/
ATA_LOG_DEVSLP_OFFSET = 0x30,
diff --git a/include/linux/blkdev.h b/include/linux/blkdev.h
index f35aea98bc35..16b47035e4b0 100644
--- a/include/linux/blkdev.h
+++ b/include/linux/blkdev.h
@@ -748,7 +748,8 @@ extern bool blk_queue_can_use_dma_map_merging(struct request_queue *q,
bool __must_check blk_get_queue(struct request_queue *);
extern void blk_put_queue(struct request_queue *);
-extern void blk_set_queue_dying(struct request_queue *);
+
+void blk_mark_disk_dead(struct gendisk *disk);
#ifdef CONFIG_BLOCK
/*
diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index fa517ae604ad..d0ad379d1e62 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -209,11 +209,9 @@ static inline bool map_value_has_timer(const struct bpf_map *map)
static inline void check_and_init_map_value(struct bpf_map *map, void *dst)
{
if (unlikely(map_value_has_spin_lock(map)))
- *(struct bpf_spin_lock *)(dst + map->spin_lock_off) =
- (struct bpf_spin_lock){};
+ memset(dst + map->spin_lock_off, 0, sizeof(struct bpf_spin_lock));
if (unlikely(map_value_has_timer(map)))
- *(struct bpf_timer *)(dst + map->timer_off) =
- (struct bpf_timer){};
+ memset(dst + map->timer_off, 0, sizeof(struct bpf_timer));
}
/* copy everything but bpf_spin_lock and bpf_timer. There could be one of each. */
@@ -224,7 +222,8 @@ static inline void copy_map_value(struct bpf_map *map, void *dst, void *src)
if (unlikely(map_value_has_spin_lock(map))) {
s_off = map->spin_lock_off;
s_sz = sizeof(struct bpf_spin_lock);
- } else if (unlikely(map_value_has_timer(map))) {
+ }
+ if (unlikely(map_value_has_timer(map))) {
t_off = map->timer_off;
t_sz = sizeof(struct bpf_timer);
}
diff --git a/include/linux/ceph/libceph.h b/include/linux/ceph/libceph.h
index 6a89ea410e43..edf62eaa6285 100644
--- a/include/linux/ceph/libceph.h
+++ b/include/linux/ceph/libceph.h
@@ -35,6 +35,7 @@
#define CEPH_OPT_TCP_NODELAY (1<<4) /* TCP_NODELAY on TCP sockets */
#define CEPH_OPT_NOMSGSIGN (1<<5) /* don't sign msgs (msgr1) */
#define CEPH_OPT_ABORT_ON_FULL (1<<6) /* abort w/ ENOSPC when full */
+#define CEPH_OPT_RXBOUNCE (1<<7) /* double-buffer read data */
#define CEPH_OPT_DEFAULT (CEPH_OPT_TCP_NODELAY)
diff --git a/include/linux/ceph/messenger.h b/include/linux/ceph/messenger.h
index ff99ce094cfa..e7f2fb2fc207 100644
--- a/include/linux/ceph/messenger.h
+++ b/include/linux/ceph/messenger.h
@@ -383,6 +383,10 @@ struct ceph_connection_v2_info {
struct ceph_gcm_nonce in_gcm_nonce;
struct ceph_gcm_nonce out_gcm_nonce;
+ struct page **in_enc_pages;
+ int in_enc_page_cnt;
+ int in_enc_resid;
+ int in_enc_i;
struct page **out_enc_pages;
int out_enc_page_cnt;
int out_enc_resid;
@@ -457,6 +461,7 @@ struct ceph_connection {
struct ceph_msg *out_msg; /* sending message (== tail of
out_sent) */
+ struct page *bounce_page;
u32 in_front_crc, in_middle_crc, in_data_crc; /* calculated crc */
struct timespec64 last_keepalive_ack; /* keepalive2 ack stamp */
diff --git a/include/linux/compiler.h b/include/linux/compiler.h
index 429dcebe2b99..0f7fd205ab7e 100644
--- a/include/linux/compiler.h
+++ b/include/linux/compiler.h
@@ -117,14 +117,6 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val,
*/
#define __stringify_label(n) #n
-#define __annotate_reachable(c) ({ \
- asm volatile(__stringify_label(c) ":\n\t" \
- ".pushsection .discard.reachable\n\t" \
- ".long " __stringify_label(c) "b - .\n\t" \
- ".popsection\n\t" : : "i" (c)); \
-})
-#define annotate_reachable() __annotate_reachable(__COUNTER__)
-
#define __annotate_unreachable(c) ({ \
asm volatile(__stringify_label(c) ":\n\t" \
".pushsection .discard.unreachable\n\t" \
@@ -133,24 +125,21 @@ void ftrace_likely_update(struct ftrace_likely_data *f, int val,
})
#define annotate_unreachable() __annotate_unreachable(__COUNTER__)
-#define ASM_UNREACHABLE \
- "999:\n\t" \
- ".pushsection .discard.unreachable\n\t" \
- ".long 999b - .\n\t" \
+#define ASM_REACHABLE \
+ "998:\n\t" \
+ ".pushsection .discard.reachable\n\t" \
+ ".long 998b - .\n\t" \
".popsection\n\t"
/* Annotate a C jump table to allow objtool to follow the code flow */
#define __annotate_jump_table __section(".rodata..c_jump_table")
#else
-#define annotate_reachable()
#define annotate_unreachable()
+# define ASM_REACHABLE
#define __annotate_jump_table
#endif
-#ifndef ASM_UNREACHABLE
-# define ASM_UNREACHABLE
-#endif
#ifndef unreachable
# define unreachable() do { \
annotate_unreachable(); \
diff --git a/include/linux/cpufreq.h b/include/linux/cpufreq.h
index 1ab29e61b078..3522a272b74d 100644
--- a/include/linux/cpufreq.h
+++ b/include/linux/cpufreq.h
@@ -382,6 +382,9 @@ struct cpufreq_driver {
int (*suspend)(struct cpufreq_policy *policy);
int (*resume)(struct cpufreq_policy *policy);
+ /* Will be called after the driver is fully initialized */
+ void (*ready)(struct cpufreq_policy *policy);
+
struct freq_attr **attr;
/* platform specific boost support code */
diff --git a/include/linux/dma-fence-array.h b/include/linux/dma-fence-array.h
index 303dd712220f..fec374f69e12 100644
--- a/include/linux/dma-fence-array.h
+++ b/include/linux/dma-fence-array.h
@@ -45,19 +45,6 @@ struct dma_fence_array {
struct irq_work work;
};
-extern const struct dma_fence_ops dma_fence_array_ops;
-
-/**
- * dma_fence_is_array - check if a fence is from the array subsclass
- * @fence: fence to test
- *
- * Return true if it is a dma_fence_array and false otherwise.
- */
-static inline bool dma_fence_is_array(struct dma_fence *fence)
-{
- return fence->ops == &dma_fence_array_ops;
-}
-
/**
* to_dma_fence_array - cast a fence to a dma_fence_array
* @fence: fence to cast to a dma_fence_array
@@ -68,7 +55,7 @@ static inline bool dma_fence_is_array(struct dma_fence *fence)
static inline struct dma_fence_array *
to_dma_fence_array(struct dma_fence *fence)
{
- if (fence->ops != &dma_fence_array_ops)
+ if (!fence || !dma_fence_is_array(fence))
return NULL;
return container_of(fence, struct dma_fence_array, base);
diff --git a/include/linux/dma-fence-chain.h b/include/linux/dma-fence-chain.h
index 54fe3443fd2c..10d51bcdf7b7 100644
--- a/include/linux/dma-fence-chain.h
+++ b/include/linux/dma-fence-chain.h
@@ -49,7 +49,6 @@ struct dma_fence_chain {
spinlock_t lock;
};
-extern const struct dma_fence_ops dma_fence_chain_ops;
/**
* to_dma_fence_chain - cast a fence to a dma_fence_chain
@@ -61,13 +60,28 @@ extern const struct dma_fence_ops dma_fence_chain_ops;
static inline struct dma_fence_chain *
to_dma_fence_chain(struct dma_fence *fence)
{
- if (!fence || fence->ops != &dma_fence_chain_ops)
+ if (!fence || !dma_fence_is_chain(fence))
return NULL;
return container_of(fence, struct dma_fence_chain, base);
}
/**
+ * dma_fence_chain_contained - return the contained fence
+ * @fence: the fence to test
+ *
+ * If the fence is a dma_fence_chain the function returns the fence contained
+ * inside the chain object, otherwise it returns the fence itself.
+ */
+static inline struct dma_fence *
+dma_fence_chain_contained(struct dma_fence *fence)
+{
+ struct dma_fence_chain *chain = to_dma_fence_chain(fence);
+
+ return chain ? chain->fence : fence;
+}
+
+/**
* dma_fence_chain_alloc
*
* Returns a new struct dma_fence_chain object or NULL on failure.
diff --git a/include/linux/dma-fence.h b/include/linux/dma-fence.h
index 1ea691753bd3..775cdc0b4f24 100644
--- a/include/linux/dma-fence.h
+++ b/include/linux/dma-fence.h
@@ -587,4 +587,42 @@ struct dma_fence *dma_fence_get_stub(void);
struct dma_fence *dma_fence_allocate_private_stub(void);
u64 dma_fence_context_alloc(unsigned num);
+extern const struct dma_fence_ops dma_fence_array_ops;
+extern const struct dma_fence_ops dma_fence_chain_ops;
+
+/**
+ * dma_fence_is_array - check if a fence is from the array subclass
+ * @fence: the fence to test
+ *
+ * Return true if it is a dma_fence_array and false otherwise.
+ */
+static inline bool dma_fence_is_array(struct dma_fence *fence)
+{
+ return fence->ops == &dma_fence_array_ops;
+}
+
+/**
+ * dma_fence_is_chain - check if a fence is from the chain subclass
+ * @fence: the fence to test
+ *
+ * Return true if it is a dma_fence_chain and false otherwise.
+ */
+static inline bool dma_fence_is_chain(struct dma_fence *fence)
+{
+ return fence->ops == &dma_fence_chain_ops;
+}
+
+/**
+ * dma_fence_is_container - check if a fence is a container for other fences
+ * @fence: the fence to test
+ *
+ * Return true if this fence is a container for other fences, false otherwise.
+ * This is important since we can't build up large fence structure or otherwise
+ * we run into recursion during operation on those fences.
+ */
+static inline bool dma_fence_is_container(struct dma_fence *fence)
+{
+ return dma_fence_is_array(fence) || dma_fence_is_chain(fence);
+}
+
#endif /* __LINUX_DMA_FENCE_H */
diff --git a/include/linux/dma-mapping.h b/include/linux/dma-mapping.h
index dca2b1355bb1..6150d11a607e 100644
--- a/include/linux/dma-mapping.h
+++ b/include/linux/dma-mapping.h
@@ -62,6 +62,14 @@
#define DMA_ATTR_PRIVILEGED (1UL << 9)
/*
+ * This is a hint to the DMA-mapping subsystem that the device is expected
+ * to overwrite the entire mapped size, thus the caller does not require any
+ * of the previous buffer contents to be preserved. This allows
+ * bounce-buffering implementations to optimise DMA_FROM_DEVICE transfers.
+ */
+#define DMA_ATTR_OVERWRITE (1UL << 10)
+
+/*
* A dma_addr_t can hold any valid DMA or bus address for the platform. It can
* be given to a device to use as a DMA source or target. It is specific to a
* given device and there may be a translation between the CPU physical address
diff --git a/include/linux/dma-resv.h b/include/linux/dma-resv.h
index a715df97b31a..afdfdfac729f 100644
--- a/include/linux/dma-resv.h
+++ b/include/linux/dma-resv.h
@@ -153,6 +153,13 @@ struct dma_resv {
* struct dma_resv_iter - current position into the dma_resv fences
*
* Don't touch this directly in the driver, use the accessor function instead.
+ *
+ * IMPORTANT
+ *
+ * When using the lockless iterators like dma_resv_iter_next_unlocked() or
+ * dma_resv_for_each_fence_unlocked() beware that the iterator can be restarted.
+ * Code which accumulates statistics or similar needs to check for this with
+ * dma_resv_iter_is_restarted().
*/
struct dma_resv_iter {
/** @obj: The dma_resv object we iterate over */
@@ -243,7 +250,11 @@ static inline bool dma_resv_iter_is_restarted(struct dma_resv_iter *cursor)
* &dma_resv.lock and using RCU instead. The cursor needs to be initialized
* with dma_resv_iter_begin() and cleaned up with dma_resv_iter_end(). Inside
* the iterator a reference to the dma_fence is held and the RCU lock dropped.
- * When the dma_resv is modified the iteration starts over again.
+ *
+ * Beware that the iterator can be restarted when the struct dma_resv for
+ * @cursor is modified. Code which accumulates statistics or similar needs to
+ * check for this with dma_resv_iter_is_restarted(). For this reason prefer the
+ * lock iterator dma_resv_for_each_fence() whenever possible.
*/
#define dma_resv_for_each_fence_unlocked(cursor, fence) \
for (fence = dma_resv_iter_first_unlocked(cursor); \
diff --git a/include/linux/fb.h b/include/linux/fb.h
index 9a14f3f8a329..9a77ab615c36 100644
--- a/include/linux/fb.h
+++ b/include/linux/fb.h
@@ -204,6 +204,7 @@ struct fb_pixmap {
struct fb_deferred_io {
/* delay between mkwrite and deferred handler */
unsigned long delay;
+ bool sort_pagelist; /* sort pagelist by offset */
struct mutex lock; /* mutex that protects the page list */
struct list_head pagelist; /* list of touched pages */
/* callback */
@@ -262,7 +263,7 @@ struct fb_ops {
/* Draws a rectangle */
void (*fb_fillrect) (struct fb_info *info, const struct fb_fillrect *rect);
- /* Copy data from area to another. Obsolete. */
+ /* Copy data from area to another */
void (*fb_copyarea) (struct fb_info *info, const struct fb_copyarea *region);
/* Draws a image to the display */
void (*fb_imageblit) (struct fb_info *info, const struct fb_image *image);
diff --git a/include/linux/fs.h b/include/linux/fs.h
index f3daaea16554..e2d892b201b0 100644
--- a/include/linux/fs.h
+++ b/include/linux/fs.h
@@ -1483,7 +1483,7 @@ struct super_block {
#ifdef CONFIG_FS_VERITY
const struct fsverity_operations *s_vop;
#endif
-#ifdef CONFIG_UNICODE
+#if IS_ENABLED(CONFIG_UNICODE)
struct unicode_map *s_encoding;
__u16 s_encoding_flags;
#endif
diff --git a/include/linux/hyperv.h b/include/linux/hyperv.h
index f565a8938836..fe2e0179ed51 100644
--- a/include/linux/hyperv.h
+++ b/include/linux/hyperv.h
@@ -1262,6 +1262,7 @@ struct hv_device {
struct vmbus_channel *channel;
struct kset *channels_kset;
struct device_dma_parameters dma_parms;
+ u64 dma_mask;
/* place holder to keep track of the dir for hv device in debugfs */
struct dentry *debug_dir;
diff --git a/include/linux/if_vlan.h b/include/linux/if_vlan.h
index 8420fe504927..2be4dd7e90a9 100644
--- a/include/linux/if_vlan.h
+++ b/include/linux/if_vlan.h
@@ -46,8 +46,10 @@ struct vlan_hdr {
* @h_vlan_encapsulated_proto: packet type ID or len
*/
struct vlan_ethhdr {
- unsigned char h_dest[ETH_ALEN];
- unsigned char h_source[ETH_ALEN];
+ struct_group(addrs,
+ unsigned char h_dest[ETH_ALEN];
+ unsigned char h_source[ETH_ALEN];
+ );
__be16 h_vlan_proto;
__be16 h_vlan_TCI;
__be16 h_vlan_encapsulated_proto;
diff --git a/include/linux/iomap.h b/include/linux/iomap.h
index b55bd49e55f5..97a3a2edb585 100644
--- a/include/linux/iomap.h
+++ b/include/linux/iomap.h
@@ -263,9 +263,11 @@ struct iomap_ioend {
struct list_head io_list; /* next ioend in chain */
u16 io_type;
u16 io_flags; /* IOMAP_F_* */
+ u32 io_folios; /* folios added to ioend */
struct inode *io_inode; /* file being written to */
size_t io_size; /* size of the extent */
loff_t io_offset; /* offset in the file */
+ sector_t io_sector; /* start sector of ioend */
struct bio *io_bio; /* bio being built */
struct bio io_inline_bio; /* MUST BE LAST! */
};
diff --git a/include/linux/jbd2.h b/include/linux/jbd2.h
index fd933c45281a..9c3ada74ffb1 100644
--- a/include/linux/jbd2.h
+++ b/include/linux/jbd2.h
@@ -594,7 +594,7 @@ struct transaction_s
*/
unsigned long t_log_start;
- /*
+ /*
* Number of buffers on the t_buffers list [j_list_lock, no locks
* needed for jbd2 thread]
*/
@@ -1295,7 +1295,7 @@ struct journal_s
* Clean-up after fast commit or full commit. JBD2 calls this function
* after every commit operation.
*/
- void (*j_fc_cleanup_callback)(struct journal_s *journal, int);
+ void (*j_fc_cleanup_callback)(struct journal_s *journal, int full, tid_t tid);
/**
* @j_fc_replay_callback:
@@ -1419,9 +1419,7 @@ extern void jbd2_journal_unfile_buffer(journal_t *, struct journal_head *);
extern bool __jbd2_journal_refile_buffer(struct journal_head *);
extern void jbd2_journal_refile_buffer(journal_t *, struct journal_head *);
extern void __jbd2_journal_file_buffer(struct journal_head *, transaction_t *, int);
-extern void __journal_free_buffer(struct journal_head *bh);
extern void jbd2_journal_file_buffer(struct journal_head *, transaction_t *, int);
-extern void __journal_clean_data_list(transaction_t *transaction);
static inline void jbd2_file_log_bh(struct list_head *head, struct buffer_head *bh)
{
list_add_tail(&bh->b_assoc_buffers, head);
@@ -1486,9 +1484,6 @@ extern int jbd2_journal_write_metadata_buffer(transaction_t *transaction,
struct buffer_head **bh_out,
sector_t blocknr);
-/* Transaction locking */
-extern void __wait_on_journal (journal_t *);
-
/* Transaction cache support */
extern void jbd2_journal_destroy_transaction_cache(void);
extern int __init jbd2_journal_init_transaction_cache(void);
@@ -1543,6 +1538,8 @@ extern int jbd2_journal_flush(journal_t *journal, unsigned int flags);
extern void jbd2_journal_lock_updates (journal_t *);
extern void jbd2_journal_unlock_updates (journal_t *);
+void jbd2_journal_wait_updates(journal_t *);
+
extern journal_t * jbd2_journal_init_dev(struct block_device *bdev,
struct block_device *fs_dev,
unsigned long long start, int len, int bsize);
@@ -1774,8 +1771,6 @@ static inline unsigned long jbd2_log_space_left(journal_t *journal)
#define BJ_Reserved 4 /* Buffer is reserved for access by journal */
#define BJ_Types 5
-extern int jbd_blocks_per_page(struct inode *inode);
-
/* JBD uses a CRC32 checksum */
#define JBD_MAX_CHECKSUM_SIZE 4
diff --git a/include/linux/kfence.h b/include/linux/kfence.h
index 4b5e3679a72c..f49e64222628 100644
--- a/include/linux/kfence.h
+++ b/include/linux/kfence.h
@@ -17,6 +17,8 @@
#include <linux/atomic.h>
#include <linux/static_key.h>
+extern unsigned long kfence_sample_interval;
+
/*
* We allocate an even number of pages, as it simplifies calculations to map
* address to metadata indices; effectively, the very first page serves as an
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 06912d6b39d0..f11039944c08 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -29,7 +29,9 @@
#include <linux/refcount.h>
#include <linux/nospec.h>
#include <linux/notifier.h>
+#include <linux/ftrace.h>
#include <linux/hashtable.h>
+#include <linux/instrumentation.h>
#include <linux/interval_tree.h>
#include <linux/rbtree.h>
#include <linux/xarray.h>
@@ -368,8 +370,11 @@ struct kvm_vcpu {
u64 last_used_slot_gen;
};
-/* must be called with irqs disabled */
-static __always_inline void guest_enter_irqoff(void)
+/*
+ * Start accounting time towards a guest.
+ * Must be called before entering guest context.
+ */
+static __always_inline void guest_timing_enter_irqoff(void)
{
/*
* This is running in ioctl context so its safe to assume that it's the
@@ -378,7 +383,18 @@ static __always_inline void guest_enter_irqoff(void)
instrumentation_begin();
vtime_account_guest_enter();
instrumentation_end();
+}
+/*
+ * Enter guest context and enter an RCU extended quiescent state.
+ *
+ * Between guest_context_enter_irqoff() and guest_context_exit_irqoff() it is
+ * unsafe to use any code which may directly or indirectly use RCU, tracing
+ * (including IRQ flag tracing), or lockdep. All code in this period must be
+ * non-instrumentable.
+ */
+static __always_inline void guest_context_enter_irqoff(void)
+{
/*
* KVM does not hold any references to rcu protected data when it
* switches CPU into a guest mode. In fact switching to a guest mode
@@ -394,16 +410,79 @@ static __always_inline void guest_enter_irqoff(void)
}
}
-static __always_inline void guest_exit_irqoff(void)
+/*
+ * Deprecated. Architectures should move to guest_timing_enter_irqoff() and
+ * guest_state_enter_irqoff().
+ */
+static __always_inline void guest_enter_irqoff(void)
+{
+ guest_timing_enter_irqoff();
+ guest_context_enter_irqoff();
+}
+
+/**
+ * guest_state_enter_irqoff - Fixup state when entering a guest
+ *
+ * Entry to a guest will enable interrupts, but the kernel state is interrupts
+ * disabled when this is invoked. Also tell RCU about it.
+ *
+ * 1) Trace interrupts on state
+ * 2) Invoke context tracking if enabled to adjust RCU state
+ * 3) Tell lockdep that interrupts are enabled
+ *
+ * Invoked from architecture specific code before entering a guest.
+ * Must be called with interrupts disabled and the caller must be
+ * non-instrumentable.
+ * The caller has to invoke guest_timing_enter_irqoff() before this.
+ *
+ * Note: this is analogous to exit_to_user_mode().
+ */
+static __always_inline void guest_state_enter_irqoff(void)
+{
+ instrumentation_begin();
+ trace_hardirqs_on_prepare();
+ lockdep_hardirqs_on_prepare(CALLER_ADDR0);
+ instrumentation_end();
+
+ guest_context_enter_irqoff();
+ lockdep_hardirqs_on(CALLER_ADDR0);
+}
+
+/*
+ * Exit guest context and exit an RCU extended quiescent state.
+ *
+ * Between guest_context_enter_irqoff() and guest_context_exit_irqoff() it is
+ * unsafe to use any code which may directly or indirectly use RCU, tracing
+ * (including IRQ flag tracing), or lockdep. All code in this period must be
+ * non-instrumentable.
+ */
+static __always_inline void guest_context_exit_irqoff(void)
{
context_tracking_guest_exit();
+}
+/*
+ * Stop accounting time towards a guest.
+ * Must be called after exiting guest context.
+ */
+static __always_inline void guest_timing_exit_irqoff(void)
+{
instrumentation_begin();
/* Flush the guest cputime we spent on the guest */
vtime_account_guest_exit();
instrumentation_end();
}
+/*
+ * Deprecated. Architectures should move to guest_state_exit_irqoff() and
+ * guest_timing_exit_irqoff().
+ */
+static __always_inline void guest_exit_irqoff(void)
+{
+ guest_context_exit_irqoff();
+ guest_timing_exit_irqoff();
+}
+
static inline void guest_exit(void)
{
unsigned long flags;
@@ -413,6 +492,33 @@ static inline void guest_exit(void)
local_irq_restore(flags);
}
+/**
+ * guest_state_exit_irqoff - Establish state when returning from guest mode
+ *
+ * Entry from a guest disables interrupts, but guest mode is traced as
+ * interrupts enabled. Also with NO_HZ_FULL RCU might be idle.
+ *
+ * 1) Tell lockdep that interrupts are disabled
+ * 2) Invoke context tracking if enabled to reactivate RCU
+ * 3) Trace interrupts off state
+ *
+ * Invoked from architecture specific code after exiting a guest.
+ * Must be invoked with interrupts disabled and the caller must be
+ * non-instrumentable.
+ * The caller has to invoke guest_timing_exit_irqoff() after this.
+ *
+ * Note: this is analogous to enter_from_user_mode().
+ */
+static __always_inline void guest_state_exit_irqoff(void)
+{
+ lockdep_hardirqs_off(CALLER_ADDR0);
+ guest_context_exit_irqoff();
+
+ instrumentation_begin();
+ trace_hardirqs_off_finish();
+ instrumentation_end();
+}
+
static inline int kvm_vcpu_exiting_guest_mode(struct kvm_vcpu *vcpu)
{
/*
diff --git a/include/linux/libata.h b/include/linux/libata.h
index 605756f645be..7f99b4d78822 100644
--- a/include/linux/libata.h
+++ b/include/linux/libata.h
@@ -380,6 +380,7 @@ enum {
ATA_HORKAGE_MAX_TRIM_128M = (1 << 26), /* Limit max trim size to 128M */
ATA_HORKAGE_NO_NCQ_ON_ATI = (1 << 27), /* Disable NCQ on ATI chipset */
ATA_HORKAGE_NO_ID_DEV_LOG = (1 << 28), /* Identify device log missing */
+ ATA_HORKAGE_NO_LOG_DIR = (1 << 29), /* Do not read log directory */
/* DMA mask for user DMA control: User visible values; DO NOT
renumber */
diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h
index b72d75141e12..0abbd685703b 100644
--- a/include/linux/memcontrol.h
+++ b/include/linux/memcontrol.h
@@ -219,7 +219,7 @@ struct obj_cgroup {
struct mem_cgroup *memcg;
atomic_t nr_charged_bytes;
union {
- struct list_head list;
+ struct list_head list; /* protected by objcg_lock */
struct rcu_head rcu;
};
};
@@ -315,7 +315,8 @@ struct mem_cgroup {
#ifdef CONFIG_MEMCG_KMEM
int kmemcg_id;
struct obj_cgroup __rcu *objcg;
- struct list_head objcg_list; /* list of inherited objcgs */
+ /* list of inherited objcgs, protected by objcg_lock */
+ struct list_head objcg_list;
#endif
MEMCG_PADDING(_pad2_);
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index e490b84732d1..8b5a314db167 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2158,7 +2158,7 @@ struct net_device {
struct netdev_queue *_tx ____cacheline_aligned_in_smp;
unsigned int num_tx_queues;
unsigned int real_num_tx_queues;
- struct Qdisc *qdisc;
+ struct Qdisc __rcu *qdisc;
unsigned int tx_queue_len;
spinlock_t tx_global_lock;
diff --git a/include/linux/netfs.h b/include/linux/netfs.h
index b46c39d98bbd..614f22213e21 100644
--- a/include/linux/netfs.h
+++ b/include/linux/netfs.h
@@ -244,6 +244,13 @@ struct netfs_cache_ops {
int (*prepare_write)(struct netfs_cache_resources *cres,
loff_t *_start, size_t *_len, loff_t i_size,
bool no_space_allocated_yet);
+
+ /* Query the occupancy of the cache in a region, returning where the
+ * next chunk of data starts and how long it is.
+ */
+ int (*query_occupancy)(struct netfs_cache_resources *cres,
+ loff_t start, size_t len, size_t granularity,
+ loff_t *_data_start, size_t *_data_len);
};
struct readahead_control;
diff --git a/include/linux/nfs.h b/include/linux/nfs.h
index 0dc7ad38a0da..b06375e88e58 100644
--- a/include/linux/nfs.h
+++ b/include/linux/nfs.h
@@ -36,14 +36,6 @@ static inline void nfs_copy_fh(struct nfs_fh *target, const struct nfs_fh *sourc
memcpy(target->data, source->data, source->size);
}
-
-/*
- * This is really a general kernel constant, but since nothing like
- * this is defined in the kernel headers, I have to do it here.
- */
-#define NFS_OFFSET_MAX ((__s64)((~(__u64)0) >> 1))
-
-
enum nfs3_stable_how {
NFS_UNSTABLE = 0,
NFS_DATA_SYNC = 1,
diff --git a/include/linux/nfs_fs.h b/include/linux/nfs_fs.h
index 02aa49323d1d..68f81d8d36de 100644
--- a/include/linux/nfs_fs.h
+++ b/include/linux/nfs_fs.h
@@ -107,6 +107,7 @@ struct nfs_open_dir_context {
__u64 dup_cookie;
pgoff_t page_index;
signed char duped;
+ bool eof;
};
/*
diff --git a/include/linux/nvme-tcp.h b/include/linux/nvme-tcp.h
index 959e0bd9a913..75470159a194 100644
--- a/include/linux/nvme-tcp.h
+++ b/include/linux/nvme-tcp.h
@@ -12,6 +12,7 @@
#define NVME_TCP_DISC_PORT 8009
#define NVME_TCP_ADMIN_CCSZ SZ_8K
#define NVME_TCP_DIGEST_LENGTH 4
+#define NVME_TCP_MIN_MAXH2CDATA 4096
enum nvme_tcp_pfv {
NVME_TCP_PFV_1_0 = 0x0,
diff --git a/include/linux/nvmem-provider.h b/include/linux/nvmem-provider.h
index 98efb7b5660d..c9a3ac9efeaa 100644
--- a/include/linux/nvmem-provider.h
+++ b/include/linux/nvmem-provider.h
@@ -70,7 +70,8 @@ struct nvmem_keepout {
* @word_size: Minimum read/write access granularity.
* @stride: Minimum read/write access stride.
* @priv: User context passed to read/write callbacks.
- * @wp-gpio: Write protect pin
+ * @wp-gpio: Write protect pin
+ * @ignore_wp: Write Protect pin is managed by the provider.
*
* Note: A default "nvmem<id>" name will be assigned to the device if
* no name is specified in its configuration. In such case "<id>" is
@@ -92,6 +93,7 @@ struct nvmem_config {
enum nvmem_type type;
bool read_only;
bool root_only;
+ bool ignore_wp;
struct device_node *of_node;
bool no_of_node;
nvmem_reg_read_t reg_read;
diff --git a/include/linux/page_table_check.h b/include/linux/page_table_check.h
index 38cace1da7b6..01e16c7696ec 100644
--- a/include/linux/page_table_check.h
+++ b/include/linux/page_table_check.h
@@ -26,6 +26,9 @@ void __page_table_check_pmd_set(struct mm_struct *mm, unsigned long addr,
pmd_t *pmdp, pmd_t pmd);
void __page_table_check_pud_set(struct mm_struct *mm, unsigned long addr,
pud_t *pudp, pud_t pud);
+void __page_table_check_pte_clear_range(struct mm_struct *mm,
+ unsigned long addr,
+ pmd_t pmd);
static inline void page_table_check_alloc(struct page *page, unsigned int order)
{
@@ -100,6 +103,16 @@ static inline void page_table_check_pud_set(struct mm_struct *mm,
__page_table_check_pud_set(mm, addr, pudp, pud);
}
+static inline void page_table_check_pte_clear_range(struct mm_struct *mm,
+ unsigned long addr,
+ pmd_t pmd)
+{
+ if (static_branch_likely(&page_table_check_disabled))
+ return;
+
+ __page_table_check_pte_clear_range(mm, addr, pmd);
+}
+
#else
static inline void page_table_check_alloc(struct page *page, unsigned int order)
@@ -143,5 +156,11 @@ static inline void page_table_check_pud_set(struct mm_struct *mm,
{
}
+static inline void page_table_check_pte_clear_range(struct mm_struct *mm,
+ unsigned long addr,
+ pmd_t pmd)
+{
+}
+
#endif /* CONFIG_PAGE_TABLE_CHECK */
#endif /* __LINUX_PAGE_TABLE_CHECK_H */
diff --git a/include/linux/pgtable.h b/include/linux/pgtable.h
index bc8713a76e03..f4f4077b97aa 100644
--- a/include/linux/pgtable.h
+++ b/include/linux/pgtable.h
@@ -62,6 +62,7 @@ static inline unsigned long pte_index(unsigned long address)
{
return (address >> PAGE_SHIFT) & (PTRS_PER_PTE - 1);
}
+#define pte_index pte_index
#ifndef pmd_index
static inline unsigned long pmd_index(unsigned long address)
diff --git a/include/linux/sched.h b/include/linux/sched.h
index f5b2be39a78c..75ba8aa60248 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -1680,7 +1680,6 @@ extern struct pid *cad_pid;
#define PF_MEMALLOC 0x00000800 /* Allocating memory */
#define PF_NPROC_EXCEEDED 0x00001000 /* set_user() noticed that RLIMIT_NPROC was exceeded */
#define PF_USED_MATH 0x00002000 /* If unset the fpu must be initialized before use */
-#define PF_USED_ASYNC 0x00004000 /* Used async_schedule*(), used by module init */
#define PF_NOFREEZE 0x00008000 /* This thread should not be frozen */
#define PF_FROZEN 0x00010000 /* Frozen for system suspend */
#define PF_KSWAPD 0x00020000 /* I am kswapd */
diff --git a/include/linux/sched/task.h b/include/linux/sched/task.h
index b9198a1b3a84..e84e54d1b490 100644
--- a/include/linux/sched/task.h
+++ b/include/linux/sched/task.h
@@ -54,8 +54,8 @@ extern asmlinkage void schedule_tail(struct task_struct *prev);
extern void init_idle(struct task_struct *idle, int cpu);
extern int sched_fork(unsigned long clone_flags, struct task_struct *p);
-extern void sched_post_fork(struct task_struct *p,
- struct kernel_clone_args *kargs);
+extern void sched_cgroup_fork(struct task_struct *p, struct kernel_clone_args *kargs);
+extern void sched_post_fork(struct task_struct *p);
extern void sched_dead(struct task_struct *p);
void __noreturn do_task_dead(void);
diff --git a/include/linux/slab.h b/include/linux/slab.h
index 37bde99b74af..5b6193fd8bd9 100644
--- a/include/linux/slab.h
+++ b/include/linux/slab.h
@@ -660,8 +660,7 @@ static inline __alloc_size(1, 2) void *kcalloc(size_t n, size_t size, gfp_t flag
* allocator where we care about the real place the memory allocation
* request comes from.
*/
-extern void *__kmalloc_track_caller(size_t size, gfp_t flags, unsigned long caller)
- __alloc_size(1);
+extern void *__kmalloc_track_caller(size_t size, gfp_t flags, unsigned long caller);
#define kmalloc_track_caller(size, flags) \
__kmalloc_track_caller(size, flags, _RET_IP_)
diff --git a/include/linux/string_helpers.h b/include/linux/string_helpers.h
index 7a22921c9db7..4d72258d42fd 100644
--- a/include/linux/string_helpers.h
+++ b/include/linux/string_helpers.h
@@ -106,4 +106,24 @@ void kfree_strarray(char **array, size_t n);
char **devm_kasprintf_strarray(struct device *dev, const char *prefix, size_t n);
+static inline const char *str_yes_no(bool v)
+{
+ return v ? "yes" : "no";
+}
+
+static inline const char *str_on_off(bool v)
+{
+ return v ? "on" : "off";
+}
+
+static inline const char *str_enable_disable(bool v)
+{
+ return v ? "enable" : "disable";
+}
+
+static inline const char *str_enabled_disabled(bool v)
+{
+ return v ? "enabled" : "disabled";
+}
+
#endif
diff --git a/include/linux/suspend.h b/include/linux/suspend.h
index 3e8ecdebe601..300273ff40cc 100644
--- a/include/linux/suspend.h
+++ b/include/linux/suspend.h
@@ -497,14 +497,14 @@ extern void ksys_sync_helper(void);
/* drivers/base/power/wakeup.c */
extern bool events_check_enabled;
-extern unsigned int pm_wakeup_irq;
extern suspend_state_t pm_suspend_target_state;
extern bool pm_wakeup_pending(void);
extern void pm_system_wakeup(void);
extern void pm_system_cancel_wakeup(void);
-extern void pm_wakeup_clear(bool reset);
+extern void pm_wakeup_clear(unsigned int irq_number);
extern void pm_system_irq_wakeup(unsigned int irq_number);
+extern unsigned int pm_wakeup_irq(void);
extern bool pm_get_wakeup_count(unsigned int *count, bool block);
extern bool pm_save_wakeup_count(unsigned int count);
extern void pm_wakep_autosleep_enabled(bool set);
diff --git a/include/linux/trace_events.h b/include/linux/trace_events.h
index 70c069aef02c..dcea51fb60e2 100644
--- a/include/linux/trace_events.h
+++ b/include/linux/trace_events.h
@@ -699,6 +699,8 @@ event_triggers_post_call(struct trace_event_file *file,
bool trace_event_ignore_this_pid(struct trace_event_file *trace_file);
+bool __trace_trigger_soft_disabled(struct trace_event_file *file);
+
/**
* trace_trigger_soft_disabled - do triggers and test if soft disabled
* @file: The file pointer of the event to test
@@ -708,20 +710,20 @@ bool trace_event_ignore_this_pid(struct trace_event_file *trace_file);
* triggers that require testing the fields, it will return true,
* otherwise false.
*/
-static inline bool
+static __always_inline bool
trace_trigger_soft_disabled(struct trace_event_file *file)
{
unsigned long eflags = file->flags;
- if (!(eflags & EVENT_FILE_FL_TRIGGER_COND)) {
- if (eflags & EVENT_FILE_FL_TRIGGER_MODE)
- event_triggers_call(file, NULL, NULL, NULL);
- if (eflags & EVENT_FILE_FL_SOFT_DISABLED)
- return true;
- if (eflags & EVENT_FILE_FL_PID_FILTER)
- return trace_event_ignore_this_pid(file);
- }
- return false;
+ if (likely(!(eflags & (EVENT_FILE_FL_TRIGGER_MODE |
+ EVENT_FILE_FL_SOFT_DISABLED |
+ EVENT_FILE_FL_PID_FILTER))))
+ return false;
+
+ if (likely(eflags & EVENT_FILE_FL_TRIGGER_COND))
+ return false;
+
+ return __trace_trigger_soft_disabled(file);
}
#ifdef CONFIG_BPF_EVENTS
diff --git a/include/net/addrconf.h b/include/net/addrconf.h
index e7ce719838b5..59940e230b78 100644
--- a/include/net/addrconf.h
+++ b/include/net/addrconf.h
@@ -109,8 +109,6 @@ struct inet6_ifaddr *ipv6_get_ifaddr(struct net *net,
int ipv6_dev_get_saddr(struct net *net, const struct net_device *dev,
const struct in6_addr *daddr, unsigned int srcprefs,
struct in6_addr *saddr);
-int __ipv6_get_lladdr(struct inet6_dev *idev, struct in6_addr *addr,
- u32 banned_flags);
int ipv6_get_lladdr(struct net_device *dev, struct in6_addr *addr,
u32 banned_flags);
bool inet_rcv_saddr_equal(const struct sock *sk, const struct sock *sk2,
diff --git a/include/net/ax25.h b/include/net/ax25.h
index 526e49589197..8221af1811df 100644
--- a/include/net/ax25.h
+++ b/include/net/ax25.h
@@ -239,6 +239,7 @@ typedef struct ax25_dev {
#if defined(CONFIG_AX25_DAMA_SLAVE) || defined(CONFIG_AX25_DAMA_MASTER)
ax25_dama_info dama;
#endif
+ refcount_t refcount;
} ax25_dev;
typedef struct ax25_cb {
@@ -293,6 +294,17 @@ static __inline__ void ax25_cb_put(ax25_cb *ax25)
}
}
+static inline void ax25_dev_hold(ax25_dev *ax25_dev)
+{
+ refcount_inc(&ax25_dev->refcount);
+}
+
+static inline void ax25_dev_put(ax25_dev *ax25_dev)
+{
+ if (refcount_dec_and_test(&ax25_dev->refcount)) {
+ kfree(ax25_dev);
+ }
+}
static inline __be16 ax25_type_trans(struct sk_buff *skb, struct net_device *dev)
{
skb->dev = dev;
diff --git a/include/net/bond_3ad.h b/include/net/bond_3ad.h
index 38785d48baff..184105d68294 100644
--- a/include/net/bond_3ad.h
+++ b/include/net/bond_3ad.h
@@ -262,7 +262,7 @@ struct ad_system {
struct ad_bond_info {
struct ad_system system; /* 802.3ad system structure */
struct bond_3ad_stats stats;
- u32 agg_select_timer; /* Timer to select aggregator after all adapter's hand shakes */
+ atomic_t agg_select_timer; /* Timer to select aggregator after all adapter's hand shakes */
u16 aggregator_identifier;
};
diff --git a/include/net/checksum.h b/include/net/checksum.h
index 5218041e5c8f..79c67f14c448 100644
--- a/include/net/checksum.h
+++ b/include/net/checksum.h
@@ -22,7 +22,7 @@
#include <asm/checksum.h>
#ifndef _HAVE_ARCH_COPY_AND_CSUM_FROM_USER
-static inline
+static __always_inline
__wsum csum_and_copy_from_user (const void __user *src, void *dst,
int len)
{
@@ -33,7 +33,7 @@ __wsum csum_and_copy_from_user (const void __user *src, void *dst,
#endif
#ifndef HAVE_CSUM_COPY_USER
-static __inline__ __wsum csum_and_copy_to_user
+static __always_inline __wsum csum_and_copy_to_user
(const void *src, void __user *dst, int len)
{
__wsum sum = csum_partial(src, len, ~0U);
@@ -45,7 +45,7 @@ static __inline__ __wsum csum_and_copy_to_user
#endif
#ifndef _HAVE_ARCH_CSUM_AND_COPY
-static inline __wsum
+static __always_inline __wsum
csum_partial_copy_nocheck(const void *src, void *dst, int len)
{
memcpy(dst, src, len);
@@ -54,7 +54,7 @@ csum_partial_copy_nocheck(const void *src, void *dst, int len)
#endif
#ifndef HAVE_ARCH_CSUM_ADD
-static inline __wsum csum_add(__wsum csum, __wsum addend)
+static __always_inline __wsum csum_add(__wsum csum, __wsum addend)
{
u32 res = (__force u32)csum;
res += (__force u32)addend;
@@ -62,12 +62,12 @@ static inline __wsum csum_add(__wsum csum, __wsum addend)
}
#endif
-static inline __wsum csum_sub(__wsum csum, __wsum addend)
+static __always_inline __wsum csum_sub(__wsum csum, __wsum addend)
{
return csum_add(csum, ~addend);
}
-static inline __sum16 csum16_add(__sum16 csum, __be16 addend)
+static __always_inline __sum16 csum16_add(__sum16 csum, __be16 addend)
{
u16 res = (__force u16)csum;
@@ -75,12 +75,12 @@ static inline __sum16 csum16_add(__sum16 csum, __be16 addend)
return (__force __sum16)(res + (res < (__force u16)addend));
}
-static inline __sum16 csum16_sub(__sum16 csum, __be16 addend)
+static __always_inline __sum16 csum16_sub(__sum16 csum, __be16 addend)
{
return csum16_add(csum, ~addend);
}
-static inline __wsum csum_shift(__wsum sum, int offset)
+static __always_inline __wsum csum_shift(__wsum sum, int offset)
{
/* rotate sum to align it with a 16b boundary */
if (offset & 1)
@@ -88,42 +88,43 @@ static inline __wsum csum_shift(__wsum sum, int offset)
return sum;
}
-static inline __wsum
+static __always_inline __wsum
csum_block_add(__wsum csum, __wsum csum2, int offset)
{
return csum_add(csum, csum_shift(csum2, offset));
}
-static inline __wsum
+static __always_inline __wsum
csum_block_add_ext(__wsum csum, __wsum csum2, int offset, int len)
{
return csum_block_add(csum, csum2, offset);
}
-static inline __wsum
+static __always_inline __wsum
csum_block_sub(__wsum csum, __wsum csum2, int offset)
{
return csum_block_add(csum, ~csum2, offset);
}
-static inline __wsum csum_unfold(__sum16 n)
+static __always_inline __wsum csum_unfold(__sum16 n)
{
return (__force __wsum)n;
}
-static inline __wsum csum_partial_ext(const void *buff, int len, __wsum sum)
+static __always_inline
+__wsum csum_partial_ext(const void *buff, int len, __wsum sum)
{
return csum_partial(buff, len, sum);
}
#define CSUM_MANGLED_0 ((__force __sum16)0xffff)
-static inline void csum_replace_by_diff(__sum16 *sum, __wsum diff)
+static __always_inline void csum_replace_by_diff(__sum16 *sum, __wsum diff)
{
*sum = csum_fold(csum_add(diff, ~csum_unfold(*sum)));
}
-static inline void csum_replace4(__sum16 *sum, __be32 from, __be32 to)
+static __always_inline void csum_replace4(__sum16 *sum, __be32 from, __be32 to)
{
__wsum tmp = csum_sub(~csum_unfold(*sum), (__force __wsum)from);
@@ -136,11 +137,16 @@ static inline void csum_replace4(__sum16 *sum, __be32 from, __be32 to)
* m : old value of a 16bit field
* m' : new value of a 16bit field
*/
-static inline void csum_replace2(__sum16 *sum, __be16 old, __be16 new)
+static __always_inline void csum_replace2(__sum16 *sum, __be16 old, __be16 new)
{
*sum = ~csum16_add(csum16_sub(~(*sum), old), new);
}
+static inline void csum_replace(__wsum *csum, __wsum old, __wsum new)
+{
+ *csum = csum_add(csum_sub(*csum, old), new);
+}
+
struct sk_buff;
void inet_proto_csum_replace4(__sum16 *sum, struct sk_buff *skb,
__be32 from, __be32 to, bool pseudohdr);
@@ -150,16 +156,16 @@ void inet_proto_csum_replace16(__sum16 *sum, struct sk_buff *skb,
void inet_proto_csum_replace_by_diff(__sum16 *sum, struct sk_buff *skb,
__wsum diff, bool pseudohdr);
-static inline void inet_proto_csum_replace2(__sum16 *sum, struct sk_buff *skb,
- __be16 from, __be16 to,
- bool pseudohdr)
+static __always_inline
+void inet_proto_csum_replace2(__sum16 *sum, struct sk_buff *skb,
+ __be16 from, __be16 to, bool pseudohdr)
{
inet_proto_csum_replace4(sum, skb, (__force __be32)from,
(__force __be32)to, pseudohdr);
}
-static inline __wsum remcsum_adjust(void *ptr, __wsum csum,
- int start, int offset)
+static __always_inline __wsum remcsum_adjust(void *ptr, __wsum csum,
+ int start, int offset)
{
__sum16 *psum = (__sum16 *)(ptr + offset);
__wsum delta;
@@ -175,12 +181,12 @@ static inline __wsum remcsum_adjust(void *ptr, __wsum csum,
return delta;
}
-static inline void remcsum_unadjust(__sum16 *psum, __wsum delta)
+static __always_inline void remcsum_unadjust(__sum16 *psum, __wsum delta)
{
*psum = csum_fold(csum_sub(delta, (__force __wsum)*psum));
}
-static inline __wsum wsum_negate(__wsum val)
+static __always_inline __wsum wsum_negate(__wsum val)
{
return (__force __wsum)-((__force u32)val);
}
diff --git a/include/net/dsa.h b/include/net/dsa.h
index 57b3e4e7413b..85a5ba3772f5 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -1187,6 +1187,7 @@ void dsa_unregister_switch(struct dsa_switch *ds);
int dsa_register_switch(struct dsa_switch *ds);
void dsa_switch_shutdown(struct dsa_switch *ds);
struct dsa_switch *dsa_switch_find(int tree_index, int sw_index);
+void dsa_flush_workqueue(void);
#ifdef CONFIG_PM_SLEEP
int dsa_switch_suspend(struct dsa_switch *ds);
int dsa_switch_resume(struct dsa_switch *ds);
diff --git a/include/net/dst_metadata.h b/include/net/dst_metadata.h
index 14efa0ded75d..adab27ba1ecb 100644
--- a/include/net/dst_metadata.h
+++ b/include/net/dst_metadata.h
@@ -123,8 +123,20 @@ static inline struct metadata_dst *tun_dst_unclone(struct sk_buff *skb)
memcpy(&new_md->u.tun_info, &md_dst->u.tun_info,
sizeof(struct ip_tunnel_info) + md_size);
+#ifdef CONFIG_DST_CACHE
+ /* Unclone the dst cache if there is one */
+ if (new_md->u.tun_info.dst_cache.cache) {
+ int ret;
+
+ ret = dst_cache_init(&new_md->u.tun_info.dst_cache, GFP_ATOMIC);
+ if (ret) {
+ metadata_dst_free(new_md);
+ return ERR_PTR(ret);
+ }
+ }
+#endif
+
skb_dst_drop(skb);
- dst_hold(&new_md->dst);
skb_dst_set(skb, &new_md->dst);
return new_md;
}
diff --git a/include/net/ip6_fib.h b/include/net/ip6_fib.h
index 40ae8f1b18e5..2048bc8748cb 100644
--- a/include/net/ip6_fib.h
+++ b/include/net/ip6_fib.h
@@ -190,14 +190,16 @@ struct fib6_info {
u32 fib6_metric;
u8 fib6_protocol;
u8 fib6_type;
+
+ u8 offload;
+ u8 trap;
+ u8 offload_failed;
+
u8 should_flush:1,
dst_nocount:1,
dst_nopolicy:1,
fib6_destroying:1,
- offload:1,
- trap:1,
- offload_failed:1,
- unused:1;
+ unused:4;
struct rcu_head rcu;
struct nexthop *nh;
diff --git a/include/net/ipv6.h b/include/net/ipv6.h
index 3afcb128e064..92eec13d1693 100644
--- a/include/net/ipv6.h
+++ b/include/net/ipv6.h
@@ -393,17 +393,20 @@ static inline void txopt_put(struct ipv6_txoptions *opt)
kfree_rcu(opt, rcu);
}
+#if IS_ENABLED(CONFIG_IPV6)
struct ip6_flowlabel *__fl6_sock_lookup(struct sock *sk, __be32 label);
extern struct static_key_false_deferred ipv6_flowlabel_exclusive;
static inline struct ip6_flowlabel *fl6_sock_lookup(struct sock *sk,
__be32 label)
{
- if (static_branch_unlikely(&ipv6_flowlabel_exclusive.key))
+ if (static_branch_unlikely(&ipv6_flowlabel_exclusive.key) &&
+ READ_ONCE(sock_net(sk)->ipv6.flowlabel_has_excl))
return __fl6_sock_lookup(sk, label) ? : ERR_PTR(-ENOENT);
return NULL;
}
+#endif
struct ipv6_txoptions *fl6_merge_options(struct ipv6_txoptions *opt_space,
struct ip6_flowlabel *fl,
diff --git a/include/net/neighbour.h b/include/net/neighbour.h
index 937389e04c8e..87419f7f5421 100644
--- a/include/net/neighbour.h
+++ b/include/net/neighbour.h
@@ -350,7 +350,8 @@ static inline struct neighbour *neigh_create(struct neigh_table *tbl,
return __neigh_create(tbl, pkey, dev, true);
}
void neigh_destroy(struct neighbour *neigh);
-int __neigh_event_send(struct neighbour *neigh, struct sk_buff *skb);
+int __neigh_event_send(struct neighbour *neigh, struct sk_buff *skb,
+ const bool immediate_ok);
int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new, u32 flags,
u32 nlmsg_pid);
void __neigh_set_probe_once(struct neighbour *neigh);
@@ -460,17 +461,24 @@ static inline struct neighbour * neigh_clone(struct neighbour *neigh)
#define neigh_hold(n) refcount_inc(&(n)->refcnt)
-static inline int neigh_event_send(struct neighbour *neigh, struct sk_buff *skb)
+static __always_inline int neigh_event_send_probe(struct neighbour *neigh,
+ struct sk_buff *skb,
+ const bool immediate_ok)
{
unsigned long now = jiffies;
-
+
if (READ_ONCE(neigh->used) != now)
WRITE_ONCE(neigh->used, now);
- if (!(neigh->nud_state&(NUD_CONNECTED|NUD_DELAY|NUD_PROBE)))
- return __neigh_event_send(neigh, skb);
+ if (!(neigh->nud_state & (NUD_CONNECTED | NUD_DELAY | NUD_PROBE)))
+ return __neigh_event_send(neigh, skb, immediate_ok);
return 0;
}
+static inline int neigh_event_send(struct neighbour *neigh, struct sk_buff *skb)
+{
+ return neigh_event_send_probe(neigh, skb, true);
+}
+
#if IS_ENABLED(CONFIG_BRIDGE_NETFILTER)
static inline int neigh_hh_bridge(struct hh_cache *hh, struct sk_buff *skb)
{
diff --git a/include/net/netfilter/nf_tables.h b/include/net/netfilter/nf_tables.h
index eaf55da9a205..c4c0861deac1 100644
--- a/include/net/netfilter/nf_tables.h
+++ b/include/net/netfilter/nf_tables.h
@@ -905,9 +905,9 @@ struct nft_expr_ops {
int (*offload)(struct nft_offload_ctx *ctx,
struct nft_flow_rule *flow,
const struct nft_expr *expr);
+ bool (*offload_action)(const struct nft_expr *expr);
void (*offload_stats)(struct nft_expr *expr,
const struct flow_stats *stats);
- u32 offload_flags;
const struct nft_expr_type *type;
void *data;
};
diff --git a/include/net/netfilter/nf_tables_offload.h b/include/net/netfilter/nf_tables_offload.h
index f9d95ff82df8..797147843958 100644
--- a/include/net/netfilter/nf_tables_offload.h
+++ b/include/net/netfilter/nf_tables_offload.h
@@ -67,8 +67,6 @@ struct nft_flow_rule {
struct flow_rule *rule;
};
-#define NFT_OFFLOAD_F_ACTION (1 << 0)
-
void nft_flow_rule_set_addr_type(struct nft_flow_rule *flow,
enum flow_dissector_key_id addr_type);
diff --git a/include/net/netns/ipv6.h b/include/net/netns/ipv6.h
index a4b550380316..6bd7e5a85ce7 100644
--- a/include/net/netns/ipv6.h
+++ b/include/net/netns/ipv6.h
@@ -77,9 +77,10 @@ struct netns_ipv6 {
spinlock_t fib6_gc_lock;
unsigned int ip6_rt_gc_expire;
unsigned long ip6_rt_last_gc;
+ unsigned char flowlabel_has_excl;
#ifdef CONFIG_IPV6_MULTIPLE_TABLES
- unsigned int fib6_rules_require_fldissect;
bool fib6_has_custom_rules;
+ unsigned int fib6_rules_require_fldissect;
#ifdef CONFIG_IPV6_SUBTREES
unsigned int fib6_routes_require_src;
#endif
diff --git a/include/net/sock.h b/include/net/sock.h
index ff9b508d9c5f..50aecd28b355 100644
--- a/include/net/sock.h
+++ b/include/net/sock.h
@@ -507,7 +507,7 @@ struct sock {
#endif
u16 sk_tsflags;
u8 sk_shutdown;
- u32 sk_tskey;
+ atomic_t sk_tskey;
atomic_t sk_zckey;
u8 sk_clockid;
@@ -2667,7 +2667,7 @@ static inline void _sock_tx_timestamp(struct sock *sk, __u16 tsflags,
__sock_tx_timestamp(tsflags, tx_flags);
if (tsflags & SOF_TIMESTAMPING_OPT_ID && tskey &&
tsflags & SOF_TIMESTAMPING_TX_RECORD_MASK)
- *tskey = sk->sk_tskey++;
+ *tskey = atomic_inc_return(&sk->sk_tskey) - 1;
}
if (unlikely(sock_flag(sk, SOCK_WIFI_STATUS)))
*tx_flags |= SKBTX_WIFI_STATUS;
diff --git a/include/sound/pcm.h b/include/sound/pcm.h
index 9b187d86e1bd..36da42cd0774 100644
--- a/include/sound/pcm.h
+++ b/include/sound/pcm.h
@@ -617,6 +617,7 @@ void snd_pcm_stream_unlock(struct snd_pcm_substream *substream);
void snd_pcm_stream_lock_irq(struct snd_pcm_substream *substream);
void snd_pcm_stream_unlock_irq(struct snd_pcm_substream *substream);
unsigned long _snd_pcm_stream_lock_irqsave(struct snd_pcm_substream *substream);
+unsigned long _snd_pcm_stream_lock_irqsave_nested(struct snd_pcm_substream *substream);
/**
* snd_pcm_stream_lock_irqsave - Lock the PCM stream
@@ -636,6 +637,20 @@ void snd_pcm_stream_unlock_irqrestore(struct snd_pcm_substream *substream,
unsigned long flags);
/**
+ * snd_pcm_stream_lock_irqsave_nested - Single-nested PCM stream locking
+ * @substream: PCM substream
+ * @flags: irq flags
+ *
+ * This locks the PCM stream like snd_pcm_stream_lock_irqsave() but with
+ * the single-depth lockdep subclass.
+ */
+#define snd_pcm_stream_lock_irqsave_nested(substream, flags) \
+ do { \
+ typecheck(unsigned long, flags); \
+ flags = _snd_pcm_stream_lock_irqsave_nested(substream); \
+ } while (0)
+
+/**
* snd_pcm_group_for_each_entry - iterate over the linked substreams
* @s: the iterator
* @substream: the substream
diff --git a/include/uapi/drm/amdgpu_drm.h b/include/uapi/drm/amdgpu_drm.h
index 0b94ec7b73e7..1d65c1fbc4ec 100644
--- a/include/uapi/drm/amdgpu_drm.h
+++ b/include/uapi/drm/amdgpu_drm.h
@@ -206,6 +206,8 @@ union drm_amdgpu_bo_list {
#define AMDGPU_CTX_OP_FREE_CTX 2
#define AMDGPU_CTX_OP_QUERY_STATE 3
#define AMDGPU_CTX_OP_QUERY_STATE2 4
+#define AMDGPU_CTX_OP_GET_STABLE_PSTATE 5
+#define AMDGPU_CTX_OP_SET_STABLE_PSTATE 6
/* GPU reset status */
#define AMDGPU_CTX_NO_RESET 0
@@ -238,10 +240,18 @@ union drm_amdgpu_bo_list {
#define AMDGPU_CTX_PRIORITY_HIGH 512
#define AMDGPU_CTX_PRIORITY_VERY_HIGH 1023
+/* select a stable profiling pstate for perfmon tools */
+#define AMDGPU_CTX_STABLE_PSTATE_FLAGS_MASK 0xf
+#define AMDGPU_CTX_STABLE_PSTATE_NONE 0
+#define AMDGPU_CTX_STABLE_PSTATE_STANDARD 1
+#define AMDGPU_CTX_STABLE_PSTATE_MIN_SCLK 2
+#define AMDGPU_CTX_STABLE_PSTATE_MIN_MCLK 3
+#define AMDGPU_CTX_STABLE_PSTATE_PEAK 4
+
struct drm_amdgpu_ctx_in {
/** AMDGPU_CTX_OP_* */
__u32 op;
- /** For future use, no flags defined so far */
+ /** Flags */
__u32 flags;
__u32 ctx_id;
/** AMDGPU_CTX_PRIORITY_* */
@@ -262,6 +272,11 @@ union drm_amdgpu_ctx_out {
/** Reset status since the last call of the ioctl. */
__u32 reset_status;
} state;
+
+ struct {
+ __u32 flags;
+ __u32 _pad;
+ } pstate;
};
union drm_amdgpu_ctx {
@@ -728,6 +743,8 @@ struct drm_amdgpu_cs_chunk_data {
#define AMDGPU_INFO_FW_DMCUB 0x14
/* Subquery id: Query TOC firmware version */
#define AMDGPU_INFO_FW_TOC 0x15
+ /* Subquery id: Query CAP firmware version */
+ #define AMDGPU_INFO_FW_CAP 0x16
/* number of bytes moved for TTM migration */
#define AMDGPU_INFO_NUM_BYTES_MOVED 0x0f
@@ -1134,6 +1151,8 @@ struct drm_amdgpu_info_video_caps {
#define AMDGPU_FAMILY_NV 143 /* Navi10 */
#define AMDGPU_FAMILY_VGH 144 /* Van Gogh */
#define AMDGPU_FAMILY_YC 146 /* Yellow Carp */
+#define AMDGPU_FAMILY_GC_10_3_6 149 /* GC 10.3.6 */
+#define AMDGPU_FAMILY_GC_10_3_7 151 /* GC 10.3.7 */
#if defined(__cplusplus)
}
diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h
index e1e351682872..0a0d56a6158e 100644
--- a/include/uapi/drm/drm_mode.h
+++ b/include/uapi/drm/drm_mode.h
@@ -663,41 +663,73 @@ struct drm_mode_fb_cmd {
#define DRM_MODE_FB_INTERLACED (1<<0) /* for interlaced framebuffers */
#define DRM_MODE_FB_MODIFIERS (1<<1) /* enables ->modifer[] */
+/**
+ * struct drm_mode_fb_cmd2 - Frame-buffer metadata.
+ *
+ * This struct holds frame-buffer metadata. There are two ways to use it:
+ *
+ * - User-space can fill this struct and perform a &DRM_IOCTL_MODE_ADDFB2
+ * ioctl to register a new frame-buffer. The new frame-buffer object ID will
+ * be set by the kernel in @fb_id.
+ * - User-space can set @fb_id and perform a &DRM_IOCTL_MODE_GETFB2 ioctl to
+ * fetch metadata about an existing frame-buffer.
+ *
+ * In case of planar formats, this struct allows up to 4 buffer objects with
+ * offsets and pitches per plane. The pitch and offset order is dictated by the
+ * format FourCC as defined by ``drm_fourcc.h``, e.g. NV12 is described as:
+ *
+ * YUV 4:2:0 image with a plane of 8 bit Y samples followed by an
+ * interleaved U/V plane containing 8 bit 2x2 subsampled colour difference
+ * samples.
+ *
+ * So it would consist of a Y plane at ``offsets[0]`` and a UV plane at
+ * ``offsets[1]``.
+ *
+ * To accommodate tiled, compressed, etc formats, a modifier can be specified.
+ * For more information see the "Format Modifiers" section. Note that even
+ * though it looks like we have a modifier per-plane, we in fact do not. The
+ * modifier for each plane must be identical. Thus all combinations of
+ * different data layouts for multi-plane formats must be enumerated as
+ * separate modifiers.
+ *
+ * All of the entries in @handles, @pitches, @offsets and @modifier must be
+ * zero when unused. Warning, for @offsets and @modifier zero can't be used to
+ * figure out whether the entry is used or not since it's a valid value (a zero
+ * offset is common, and a zero modifier is &DRM_FORMAT_MOD_LINEAR).
+ */
struct drm_mode_fb_cmd2 {
+ /** @fb_id: Object ID of the frame-buffer. */
__u32 fb_id;
+ /** @width: Width of the frame-buffer. */
__u32 width;
+ /** @height: Height of the frame-buffer. */
__u32 height;
- __u32 pixel_format; /* fourcc code from drm_fourcc.h */
- __u32 flags; /* see above flags */
+ /**
+ * @pixel_format: FourCC format code, see ``DRM_FORMAT_*`` constants in
+ * ``drm_fourcc.h``.
+ */
+ __u32 pixel_format;
+ /**
+ * @flags: Frame-buffer flags (see &DRM_MODE_FB_INTERLACED and
+ * &DRM_MODE_FB_MODIFIERS).
+ */
+ __u32 flags;
- /*
- * In case of planar formats, this ioctl allows up to 4
- * buffer objects with offsets and pitches per plane.
- * The pitch and offset order is dictated by the fourcc,
- * e.g. NV12 (https://fourcc.org/yuv.php#NV12) is described as:
- *
- * YUV 4:2:0 image with a plane of 8 bit Y samples
- * followed by an interleaved U/V plane containing
- * 8 bit 2x2 subsampled colour difference samples.
- *
- * So it would consist of Y as offsets[0] and UV as
- * offsets[1]. Note that offsets[0] will generally
- * be 0 (but this is not required).
- *
- * To accommodate tiled, compressed, etc formats, a
- * modifier can be specified. The default value of zero
- * indicates "native" format as specified by the fourcc.
- * Vendor specific modifier token. Note that even though
- * it looks like we have a modifier per-plane, we in fact
- * do not. The modifier for each plane must be identical.
- * Thus all combinations of different data layouts for
- * multi plane formats must be enumerated as separate
- * modifiers.
+ /**
+ * @handles: GEM buffer handle, one per plane. Set to 0 if the plane is
+ * unused. The same handle can be used for multiple planes.
*/
__u32 handles[4];
- __u32 pitches[4]; /* pitch for each plane */
- __u32 offsets[4]; /* offset of each plane */
- __u64 modifier[4]; /* ie, tiling, compress */
+ /** @pitches: Pitch (aka. stride) in bytes, one per plane. */
+ __u32 pitches[4];
+ /** @offsets: Offset into the buffer in bytes, one per plane. */
+ __u32 offsets[4];
+ /**
+ * @modifier: Format modifier, one per plane. See ``DRM_FORMAT_MOD_*``
+ * constants in ``drm_fourcc.h``. All planes must use the same
+ * modifier. Ignored unless &DRM_MODE_FB_MODIFIERS is set in @flags.
+ */
+ __u64 modifier[4];
};
#define DRM_MODE_FB_DIRTY_ANNOTATE_COPY 0x01
diff --git a/include/uapi/linux/kfd_ioctl.h b/include/uapi/linux/kfd_ioctl.h
index af96af174dc4..baec5a41de3e 100644
--- a/include/uapi/linux/kfd_ioctl.h
+++ b/include/uapi/linux/kfd_ioctl.h
@@ -32,9 +32,10 @@
* - 1.4 - Indicate new SRAM EDC bit in device properties
* - 1.5 - Add SVM API
* - 1.6 - Query clear flags in SVM get_attr API
+ * - 1.7 - Checkpoint Restore (CRIU) API
*/
#define KFD_IOCTL_MAJOR_VERSION 1
-#define KFD_IOCTL_MINOR_VERSION 6
+#define KFD_IOCTL_MINOR_VERSION 7
struct kfd_ioctl_get_version_args {
__u32 major_version; /* from KFD */
@@ -468,6 +469,82 @@ struct kfd_ioctl_smi_events_args {
__u32 anon_fd; /* from KFD */
};
+/**************************************************************************************************
+ * CRIU IOCTLs (Checkpoint Restore In Userspace)
+ *
+ * When checkpointing a process, the userspace application will perform:
+ * 1. PROCESS_INFO op to determine current process information. This pauses execution and evicts
+ * all the queues.
+ * 2. CHECKPOINT op to checkpoint process contents (BOs, queues, events, svm-ranges)
+ * 3. UNPAUSE op to un-evict all the queues
+ *
+ * When restoring a process, the CRIU userspace application will perform:
+ *
+ * 1. RESTORE op to restore process contents
+ * 2. RESUME op to start the process
+ *
+ * Note: Queues are forced into an evicted state after a successful PROCESS_INFO. User
+ * application needs to perform an UNPAUSE operation after calling PROCESS_INFO.
+ */
+
+enum kfd_criu_op {
+ KFD_CRIU_OP_PROCESS_INFO,
+ KFD_CRIU_OP_CHECKPOINT,
+ KFD_CRIU_OP_UNPAUSE,
+ KFD_CRIU_OP_RESTORE,
+ KFD_CRIU_OP_RESUME,
+};
+
+/**
+ * kfd_ioctl_criu_args - Arguments perform CRIU operation
+ * @devices: [in/out] User pointer to memory location for devices information.
+ * This is an array of type kfd_criu_device_bucket.
+ * @bos: [in/out] User pointer to memory location for BOs information
+ * This is an array of type kfd_criu_bo_bucket.
+ * @priv_data: [in/out] User pointer to memory location for private data
+ * @priv_data_size: [in/out] Size of priv_data in bytes
+ * @num_devices: [in/out] Number of GPUs used by process. Size of @devices array.
+ * @num_bos [in/out] Number of BOs used by process. Size of @bos array.
+ * @num_objects: [in/out] Number of objects used by process. Objects are opaque to
+ * user application.
+ * @pid: [in/out] PID of the process being checkpointed
+ * @op [in] Type of operation (kfd_criu_op)
+ *
+ * Return: 0 on success, -errno on failure
+ */
+struct kfd_ioctl_criu_args {
+ __u64 devices; /* Used during ops: CHECKPOINT, RESTORE */
+ __u64 bos; /* Used during ops: CHECKPOINT, RESTORE */
+ __u64 priv_data; /* Used during ops: CHECKPOINT, RESTORE */
+ __u64 priv_data_size; /* Used during ops: PROCESS_INFO, RESTORE */
+ __u32 num_devices; /* Used during ops: PROCESS_INFO, RESTORE */
+ __u32 num_bos; /* Used during ops: PROCESS_INFO, RESTORE */
+ __u32 num_objects; /* Used during ops: PROCESS_INFO, RESTORE */
+ __u32 pid; /* Used during ops: PROCESS_INFO, RESUME */
+ __u32 op;
+};
+
+struct kfd_criu_device_bucket {
+ __u32 user_gpu_id;
+ __u32 actual_gpu_id;
+ __u32 drm_fd;
+ __u32 pad;
+};
+
+struct kfd_criu_bo_bucket {
+ __u64 addr;
+ __u64 size;
+ __u64 offset;
+ __u64 restored_offset; /* During restore, updated offset for BO */
+ __u32 gpu_id; /* This is the user_gpu_id */
+ __u32 alloc_flags;
+ __u32 dmabuf_fd;
+ __u32 pad;
+};
+
+/* CRIU IOCTLs - END */
+/**************************************************************************************************/
+
/* Register offset inside the remapped mmio page
*/
enum kfd_mmio_remap {
@@ -596,7 +673,7 @@ struct kfd_ioctl_svm_args {
__u32 op;
__u32 nattr;
/* Variable length array of attributes */
- struct kfd_ioctl_svm_attribute attrs[0];
+ struct kfd_ioctl_svm_attribute attrs[];
};
/**
@@ -679,16 +756,16 @@ struct kfd_ioctl_set_xnack_mode_args {
#define AMDKFD_IOC_WAIT_EVENTS \
AMDKFD_IOWR(0x0C, struct kfd_ioctl_wait_events_args)
-#define AMDKFD_IOC_DBG_REGISTER \
+#define AMDKFD_IOC_DBG_REGISTER_DEPRECATED \
AMDKFD_IOW(0x0D, struct kfd_ioctl_dbg_register_args)
-#define AMDKFD_IOC_DBG_UNREGISTER \
+#define AMDKFD_IOC_DBG_UNREGISTER_DEPRECATED \
AMDKFD_IOW(0x0E, struct kfd_ioctl_dbg_unregister_args)
-#define AMDKFD_IOC_DBG_ADDRESS_WATCH \
+#define AMDKFD_IOC_DBG_ADDRESS_WATCH_DEPRECATED \
AMDKFD_IOW(0x0F, struct kfd_ioctl_dbg_address_watch_args)
-#define AMDKFD_IOC_DBG_WAVE_CONTROL \
+#define AMDKFD_IOC_DBG_WAVE_CONTROL_DEPRECATED \
AMDKFD_IOW(0x10, struct kfd_ioctl_dbg_wave_control_args)
#define AMDKFD_IOC_SET_SCRATCH_BACKING_VA \
@@ -742,7 +819,10 @@ struct kfd_ioctl_set_xnack_mode_args {
#define AMDKFD_IOC_SET_XNACK_MODE \
AMDKFD_IOWR(0x21, struct kfd_ioctl_set_xnack_mode_args)
+#define AMDKFD_IOC_CRIU_OP \
+ AMDKFD_IOWR(0x22, struct kfd_ioctl_criu_args)
+
#define AMDKFD_COMMAND_START 0x01
-#define AMDKFD_COMMAND_END 0x22
+#define AMDKFD_COMMAND_END 0x23
#endif
diff --git a/include/uapi/linux/kvm.h b/include/uapi/linux/kvm.h
index b46bcdb0cab1..507ee1f2aa96 100644
--- a/include/uapi/linux/kvm.h
+++ b/include/uapi/linux/kvm.h
@@ -1134,6 +1134,7 @@ struct kvm_ppc_resize_hpt {
#define KVM_CAP_VM_GPA_BITS 207
#define KVM_CAP_XSAVE2 208
#define KVM_CAP_SYS_ATTRIBUTES 209
+#define KVM_CAP_PPC_AIL_MODE_3 210
#ifdef KVM_CAP_IRQ_ROUTING
@@ -1624,9 +1625,6 @@ struct kvm_enc_region {
#define KVM_S390_NORMAL_RESET _IO(KVMIO, 0xc3)
#define KVM_S390_CLEAR_RESET _IO(KVMIO, 0xc4)
-/* Available with KVM_CAP_XSAVE2 */
-#define KVM_GET_XSAVE2 _IOR(KVMIO, 0xcf, struct kvm_xsave)
-
struct kvm_s390_pv_sec_parm {
__u64 origin;
__u64 length;
@@ -2048,4 +2046,7 @@ struct kvm_stats_desc {
#define KVM_GET_STATS_FD _IO(KVMIO, 0xce)
+/* Available with KVM_CAP_XSAVE2 */
+#define KVM_GET_XSAVE2 _IOR(KVMIO, 0xcf, struct kvm_xsave)
+
#endif /* __LINUX_KVM_H */
diff --git a/include/uapi/linux/netfilter/nf_conntrack_common.h b/include/uapi/linux/netfilter/nf_conntrack_common.h
index 4b3395082d15..26071021e986 100644
--- a/include/uapi/linux/netfilter/nf_conntrack_common.h
+++ b/include/uapi/linux/netfilter/nf_conntrack_common.h
@@ -106,7 +106,7 @@ enum ip_conntrack_status {
IPS_NAT_CLASH = IPS_UNTRACKED,
#endif
- /* Conntrack got a helper explicitly attached via CT target. */
+ /* Conntrack got a helper explicitly attached (ruleset, ctnetlink). */
IPS_HELPER_BIT = 13,
IPS_HELPER = (1 << IPS_HELPER_BIT),
diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
index 1b65042ab1db..82858b697c05 100644
--- a/include/uapi/linux/perf_event.h
+++ b/include/uapi/linux/perf_event.h
@@ -465,6 +465,8 @@ struct perf_event_attr {
/*
* User provided data if sigtrap=1, passed back to user via
* siginfo_t::si_perf_data, e.g. to permit user to identify the event.
+ * Note, siginfo_t::si_perf_data is long-sized, and sig_data will be
+ * truncated accordingly on 32 bit architectures.
*/
__u64 sig_data;
};
diff --git a/include/uapi/linux/smc_diag.h b/include/uapi/linux/smc_diag.h
index c7008d87f1a4..8cb3a6fef553 100644
--- a/include/uapi/linux/smc_diag.h
+++ b/include/uapi/linux/smc_diag.h
@@ -84,12 +84,11 @@ struct smc_diag_conninfo {
/* SMC_DIAG_LINKINFO */
struct smc_diag_linkinfo {
- __u8 link_id; /* link identifier */
- __u8 ibname[IB_DEVICE_NAME_MAX]; /* name of the RDMA device */
- __u8 ibport; /* RDMA device port number */
- __u8 gid[40]; /* local GID */
- __u8 peer_gid[40]; /* peer GID */
- __aligned_u64 net_cookie; /* RDMA device net namespace */
+ __u8 link_id; /* link identifier */
+ __u8 ibname[IB_DEVICE_NAME_MAX]; /* name of the RDMA device */
+ __u8 ibport; /* RDMA device port number */
+ __u8 gid[40]; /* local GID */
+ __u8 peer_gid[40]; /* peer GID */
};
struct smc_diag_lgrinfo {
diff --git a/include/uapi/sound/asound.h b/include/uapi/sound/asound.h
index ef0cafe295b2..2d3e5df39a59 100644
--- a/include/uapi/sound/asound.h
+++ b/include/uapi/sound/asound.h
@@ -56,8 +56,10 @@
* *
****************************************************************************/
+#define AES_IEC958_STATUS_SIZE 24
+
struct snd_aes_iec958 {
- unsigned char status[24]; /* AES/IEC958 channel status bits */
+ unsigned char status[AES_IEC958_STATUS_SIZE]; /* AES/IEC958 channel status bits */
unsigned char subcode[147]; /* AES/IEC958 subcode bits */
unsigned char pad; /* nothing */
unsigned char dig_subframe[4]; /* AES/IEC958 subframe bits */
diff --git a/include/uapi/xen/gntdev.h b/include/uapi/xen/gntdev.h
index 9ac5515b9bc2..7a7145395c09 100644
--- a/include/uapi/xen/gntdev.h
+++ b/include/uapi/xen/gntdev.h
@@ -47,7 +47,13 @@ struct ioctl_gntdev_grant_ref {
/*
* Inserts the grant references into the mapping table of an instance
* of gntdev. N.B. This does not perform the mapping, which is deferred
- * until mmap() is called with @index as the offset.
+ * until mmap() is called with @index as the offset. @index should be
+ * considered opaque to userspace, with one exception: if no grant
+ * references have ever been inserted into the mapping table of this
+ * instance, @index will be set to 0. This is necessary to use gntdev
+ * with userspace APIs that expect a file descriptor that can be
+ * mmap()'d at offset 0, such as Wayland. If @count is set to 0, this
+ * ioctl will fail.
*/
#define IOCTL_GNTDEV_MAP_GRANT_REF \
_IOC(_IOC_NONE, 'G', 0, sizeof(struct ioctl_gntdev_map_grant_ref))
diff --git a/include/xen/xenbus_dev.h b/include/xen/xenbus_dev.h
index bbee8c6a349d..4dc45a51c044 100644
--- a/include/xen/xenbus_dev.h
+++ b/include/xen/xenbus_dev.h
@@ -1,6 +1,4 @@
/******************************************************************************
- * evtchn.h
- *
* Interface to /dev/xen/xenbus_backend.
*
* Copyright (c) 2011 Bastian Blank <waldi@debian.org>