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-rw-r--r--include/asm-generic/rwsem.h13
-rw-r--r--include/linux/atomic.h4
-rw-r--r--include/linux/dcache.h12
-rw-r--r--include/linux/efi.h167
-rw-r--r--include/linux/kernfs.h2
-rw-r--r--include/linux/lockdep.h15
-rw-r--r--include/linux/mfd/samsung/s2mps11.h2
-rw-r--r--include/linux/mm.h9
-rw-r--r--include/linux/namei.h2
-rw-r--r--include/linux/perf_event.h139
-rw-r--r--include/linux/proportions.h137
-rw-r--r--include/linux/rcupdate.h30
-rw-r--r--include/linux/rcutiny.h16
-rw-r--r--include/linux/rcutree.h2
-rw-r--r--include/linux/rwsem-spinlock.h2
-rw-r--r--include/linux/rwsem.h3
-rw-r--r--include/linux/sched.h21
-rw-r--r--include/linux/signal.h4
-rw-r--r--include/linux/swap.h6
-rw-r--r--include/linux/uio.h1
-rw-r--r--include/trace/events/rcu.h79
-rw-r--r--include/uapi/linux/if.h28
-rw-r--r--include/uapi/linux/libc-compat.h44
-rw-r--r--include/uapi/linux/perf_event.h4
-rw-r--r--include/uapi/linux/signal.h5
-rw-r--r--include/uapi/linux/tc_act/Kbuild1
26 files changed, 569 insertions, 179 deletions
diff --git a/include/asm-generic/rwsem.h b/include/asm-generic/rwsem.h
index d6d5dc98d7da..3fc94a046bf5 100644
--- a/include/asm-generic/rwsem.h
+++ b/include/asm-generic/rwsem.h
@@ -53,7 +53,7 @@ static inline int __down_read_trylock(struct rw_semaphore *sem)
/*
* lock for writing
*/
-static inline void __down_write_nested(struct rw_semaphore *sem, int subclass)
+static inline void __down_write(struct rw_semaphore *sem)
{
long tmp;
@@ -63,9 +63,16 @@ static inline void __down_write_nested(struct rw_semaphore *sem, int subclass)
rwsem_down_write_failed(sem);
}
-static inline void __down_write(struct rw_semaphore *sem)
+static inline int __down_write_killable(struct rw_semaphore *sem)
{
- __down_write_nested(sem, 0);
+ long tmp;
+
+ tmp = atomic_long_add_return_acquire(RWSEM_ACTIVE_WRITE_BIAS,
+ (atomic_long_t *)&sem->count);
+ if (unlikely(tmp != RWSEM_ACTIVE_WRITE_BIAS))
+ if (IS_ERR(rwsem_down_write_failed_killable(sem)))
+ return -EINTR;
+ return 0;
}
static inline int __down_write_trylock(struct rw_semaphore *sem)
diff --git a/include/linux/atomic.h b/include/linux/atomic.h
index 506c3531832e..e451534fe54d 100644
--- a/include/linux/atomic.h
+++ b/include/linux/atomic.h
@@ -560,11 +560,11 @@ static inline int atomic_dec_if_positive(atomic_t *v)
/**
* atomic_fetch_or - perform *p |= mask and return old value of *p
- * @p: pointer to atomic_t
* @mask: mask to OR on the atomic_t
+ * @p: pointer to atomic_t
*/
#ifndef atomic_fetch_or
-static inline int atomic_fetch_or(atomic_t *p, int mask)
+static inline int atomic_fetch_or(int mask, atomic_t *p)
{
int old, val = atomic_read(p);
diff --git a/include/linux/dcache.h b/include/linux/dcache.h
index 4bb4de8d95ea..7e9422cb5989 100644
--- a/include/linux/dcache.h
+++ b/include/linux/dcache.h
@@ -565,4 +565,16 @@ static inline struct dentry *d_real(struct dentry *dentry)
return dentry;
}
+static inline struct inode *vfs_select_inode(struct dentry *dentry,
+ unsigned open_flags)
+{
+ struct inode *inode = d_inode(dentry);
+
+ if (inode && unlikely(dentry->d_flags & DCACHE_OP_SELECT_INODE))
+ inode = dentry->d_op->d_select_inode(dentry, open_flags);
+
+ return inode;
+}
+
+
#endif /* __LINUX_DCACHE_H */
diff --git a/include/linux/efi.h b/include/linux/efi.h
index 1626474567ac..df7acb51f3cc 100644
--- a/include/linux/efi.h
+++ b/include/linux/efi.h
@@ -21,6 +21,7 @@
#include <linux/pfn.h>
#include <linux/pstore.h>
#include <linux/reboot.h>
+#include <linux/screen_info.h>
#include <asm/page.h>
@@ -124,6 +125,13 @@ typedef struct {
} efi_capsule_header_t;
/*
+ * EFI capsule flags
+ */
+#define EFI_CAPSULE_PERSIST_ACROSS_RESET 0x00010000
+#define EFI_CAPSULE_POPULATE_SYSTEM_TABLE 0x00020000
+#define EFI_CAPSULE_INITIATE_RESET 0x00040000
+
+/*
* Allocation types for calls to boottime->allocate_pages.
*/
#define EFI_ALLOCATE_ANY_PAGES 0
@@ -282,9 +290,10 @@ typedef struct {
efi_status_t (*handle_protocol)(efi_handle_t, efi_guid_t *, void **);
void *__reserved;
void *register_protocol_notify;
- void *locate_handle;
+ efi_status_t (*locate_handle)(int, efi_guid_t *, void *,
+ unsigned long *, efi_handle_t *);
void *locate_device_path;
- void *install_configuration_table;
+ efi_status_t (*install_configuration_table)(efi_guid_t *, void *);
void *load_image;
void *start_image;
void *exit;
@@ -623,6 +632,27 @@ void efi_native_runtime_setup(void);
EFI_GUID(0x3152bca5, 0xeade, 0x433d, \
0x86, 0x2e, 0xc0, 0x1c, 0xdc, 0x29, 0x1f, 0x44)
+#define EFI_MEMORY_ATTRIBUTES_TABLE_GUID \
+ EFI_GUID(0xdcfa911d, 0x26eb, 0x469f, \
+ 0xa2, 0x20, 0x38, 0xb7, 0xdc, 0x46, 0x12, 0x20)
+
+#define EFI_CONSOLE_OUT_DEVICE_GUID \
+ EFI_GUID(0xd3b36f2c, 0xd551, 0x11d4, \
+ 0x9a, 0x46, 0x00, 0x90, 0x27, 0x3f, 0xc1, 0x4d)
+
+/*
+ * This GUID is used to pass to the kernel proper the struct screen_info
+ * structure that was populated by the stub based on the GOP protocol instance
+ * associated with ConOut
+ */
+#define LINUX_EFI_ARM_SCREEN_INFO_TABLE_GUID \
+ EFI_GUID(0xe03fc20a, 0x85dc, 0x406e, \
+ 0xb9, 0xe, 0x4a, 0xb5, 0x02, 0x37, 0x1d, 0x95)
+
+#define LINUX_EFI_LOADER_ENTRY_GUID \
+ EFI_GUID(0x4a67b082, 0x0a4c, 0x41cf, \
+ 0xb6, 0xc7, 0x44, 0x0b, 0x29, 0xbb, 0x8c, 0x4f)
+
typedef struct {
efi_guid_t guid;
u64 table;
@@ -847,6 +877,14 @@ typedef struct {
#define EFI_INVALID_TABLE_ADDR (~0UL)
+typedef struct {
+ u32 version;
+ u32 num_entries;
+ u32 desc_size;
+ u32 reserved;
+ efi_memory_desc_t entry[0];
+} efi_memory_attributes_table_t;
+
/*
* All runtime access to EFI goes through this structure:
*/
@@ -868,6 +906,7 @@ extern struct efi {
unsigned long config_table; /* config tables */
unsigned long esrt; /* ESRT table */
unsigned long properties_table; /* properties table */
+ unsigned long mem_attr_table; /* memory attributes table */
efi_get_time_t *get_time;
efi_set_time_t *set_time;
efi_get_wakeup_time_t *get_wakeup_time;
@@ -883,7 +922,7 @@ extern struct efi {
efi_get_next_high_mono_count_t *get_next_high_mono_count;
efi_reset_system_t *reset_system;
efi_set_virtual_address_map_t *set_virtual_address_map;
- struct efi_memory_map *memmap;
+ struct efi_memory_map memmap;
unsigned long flags;
} efi;
@@ -945,7 +984,6 @@ extern void efi_initialize_iomem_resources(struct resource *code_resource,
extern void efi_get_time(struct timespec *now);
extern void efi_reserve_boot_services(void);
extern int efi_get_fdt_params(struct efi_fdt_params *params);
-extern struct efi_memory_map memmap;
extern struct kobject *efi_kobj;
extern int efi_reboot_quirk_mode;
@@ -957,12 +995,34 @@ extern void __init efi_fake_memmap(void);
static inline void efi_fake_memmap(void) { }
#endif
+/*
+ * efi_memattr_perm_setter - arch specific callback function passed into
+ * efi_memattr_apply_permissions() that updates the
+ * mapping permissions described by the second
+ * argument in the page tables referred to by the
+ * first argument.
+ */
+typedef int (*efi_memattr_perm_setter)(struct mm_struct *, efi_memory_desc_t *);
+
+extern int efi_memattr_init(void);
+extern int efi_memattr_apply_permissions(struct mm_struct *mm,
+ efi_memattr_perm_setter fn);
+
/* Iterate through an efi_memory_map */
-#define for_each_efi_memory_desc(m, md) \
+#define for_each_efi_memory_desc_in_map(m, md) \
for ((md) = (m)->map; \
(md) <= (efi_memory_desc_t *)((m)->map_end - (m)->desc_size); \
(md) = (void *)(md) + (m)->desc_size)
+/**
+ * for_each_efi_memory_desc - iterate over descriptors in efi.memmap
+ * @md: the efi_memory_desc_t * iterator
+ *
+ * Once the loop finishes @md must not be accessed.
+ */
+#define for_each_efi_memory_desc(md) \
+ for_each_efi_memory_desc_in_map(&efi.memmap, md)
+
/*
* Format an EFI memory descriptor's type and attributes to a user-provided
* character buffer, as per snprintf(), and return the buffer.
@@ -1000,7 +1060,6 @@ extern int __init efi_setup_pcdp_console(char *);
* possible, remove EFI-related code altogether.
*/
#define EFI_BOOT 0 /* Were we booted from EFI? */
-#define EFI_SYSTEM_TABLES 1 /* Can we use EFI system tables? */
#define EFI_CONFIG_TABLES 2 /* Can we use EFI config tables? */
#define EFI_RUNTIME_SERVICES 3 /* Can we use runtime services? */
#define EFI_MEMMAP 4 /* Can we use EFI memory map? */
@@ -1026,8 +1085,16 @@ static inline bool efi_enabled(int feature)
}
static inline void
efi_reboot(enum reboot_mode reboot_mode, const char *__unused) {}
+
+static inline bool
+efi_capsule_pending(int *reset_type)
+{
+ return false;
+}
#endif
+extern int efi_status_to_err(efi_status_t status);
+
/*
* Variable Attributes
*/
@@ -1180,6 +1247,80 @@ struct efi_simple_text_output_protocol {
void *test_string;
};
+#define PIXEL_RGB_RESERVED_8BIT_PER_COLOR 0
+#define PIXEL_BGR_RESERVED_8BIT_PER_COLOR 1
+#define PIXEL_BIT_MASK 2
+#define PIXEL_BLT_ONLY 3
+#define PIXEL_FORMAT_MAX 4
+
+struct efi_pixel_bitmask {
+ u32 red_mask;
+ u32 green_mask;
+ u32 blue_mask;
+ u32 reserved_mask;
+};
+
+struct efi_graphics_output_mode_info {
+ u32 version;
+ u32 horizontal_resolution;
+ u32 vertical_resolution;
+ int pixel_format;
+ struct efi_pixel_bitmask pixel_information;
+ u32 pixels_per_scan_line;
+} __packed;
+
+struct efi_graphics_output_protocol_mode_32 {
+ u32 max_mode;
+ u32 mode;
+ u32 info;
+ u32 size_of_info;
+ u64 frame_buffer_base;
+ u32 frame_buffer_size;
+} __packed;
+
+struct efi_graphics_output_protocol_mode_64 {
+ u32 max_mode;
+ u32 mode;
+ u64 info;
+ u64 size_of_info;
+ u64 frame_buffer_base;
+ u64 frame_buffer_size;
+} __packed;
+
+struct efi_graphics_output_protocol_mode {
+ u32 max_mode;
+ u32 mode;
+ unsigned long info;
+ unsigned long size_of_info;
+ u64 frame_buffer_base;
+ unsigned long frame_buffer_size;
+} __packed;
+
+struct efi_graphics_output_protocol_32 {
+ u32 query_mode;
+ u32 set_mode;
+ u32 blt;
+ u32 mode;
+};
+
+struct efi_graphics_output_protocol_64 {
+ u64 query_mode;
+ u64 set_mode;
+ u64 blt;
+ u64 mode;
+};
+
+struct efi_graphics_output_protocol {
+ unsigned long query_mode;
+ unsigned long set_mode;
+ unsigned long blt;
+ struct efi_graphics_output_protocol_mode *mode;
+};
+
+typedef efi_status_t (*efi_graphics_output_protocol_query_mode)(
+ struct efi_graphics_output_protocol *, u32, unsigned long *,
+ struct efi_graphics_output_mode_info **);
+
extern struct list_head efivar_sysfs_list;
static inline void
@@ -1195,8 +1336,7 @@ int efivars_unregister(struct efivars *efivars);
struct kobject *efivars_kobject(void);
int efivar_init(int (*func)(efi_char16_t *, efi_guid_t, unsigned long, void *),
- void *data, bool atomic, bool duplicates,
- struct list_head *head);
+ void *data, bool duplicates, struct list_head *head);
void efivar_entry_add(struct efivar_entry *entry, struct list_head *head);
void efivar_entry_remove(struct efivar_entry *entry);
@@ -1242,6 +1382,13 @@ int efivars_sysfs_init(void);
#define EFIVARS_DATA_SIZE_MAX 1024
#endif /* CONFIG_EFI_VARS */
+extern bool efi_capsule_pending(int *reset_type);
+
+extern int efi_capsule_supported(efi_guid_t guid, u32 flags,
+ size_t size, int *reset);
+
+extern int efi_capsule_update(efi_capsule_header_t *capsule,
+ struct page **pages);
#ifdef CONFIG_EFI_RUNTIME_MAP
int efi_runtime_map_init(struct kobject *);
@@ -1319,5 +1466,9 @@ efi_status_t handle_cmdline_files(efi_system_table_t *sys_table_arg,
efi_status_t efi_parse_options(char *cmdline);
+efi_status_t efi_setup_gop(efi_system_table_t *sys_table_arg,
+ struct screen_info *si, efi_guid_t *proto,
+ unsigned long size);
+
bool efi_runtime_disabled(void);
#endif /* _LINUX_EFI_H */
diff --git a/include/linux/kernfs.h b/include/linux/kernfs.h
index c06c44242f39..30f089ebe0a4 100644
--- a/include/linux/kernfs.h
+++ b/include/linux/kernfs.h
@@ -152,6 +152,8 @@ struct kernfs_syscall_ops {
int (*rmdir)(struct kernfs_node *kn);
int (*rename)(struct kernfs_node *kn, struct kernfs_node *new_parent,
const char *new_name);
+ int (*show_path)(struct seq_file *sf, struct kernfs_node *kn,
+ struct kernfs_root *root);
};
struct kernfs_root {
diff --git a/include/linux/lockdep.h b/include/linux/lockdep.h
index fb7d87e45fbe..eabe0138eb06 100644
--- a/include/linux/lockdep.h
+++ b/include/linux/lockdep.h
@@ -457,6 +457,18 @@ do { \
lock_acquired(&(_lock)->dep_map, _RET_IP_); \
} while (0)
+#define LOCK_CONTENDED_RETURN(_lock, try, lock) \
+({ \
+ int ____err = 0; \
+ if (!try(_lock)) { \
+ lock_contended(&(_lock)->dep_map, _RET_IP_); \
+ ____err = lock(_lock); \
+ } \
+ if (!____err) \
+ lock_acquired(&(_lock)->dep_map, _RET_IP_); \
+ ____err; \
+})
+
#else /* CONFIG_LOCK_STAT */
#define lock_contended(lockdep_map, ip) do {} while (0)
@@ -465,6 +477,9 @@ do { \
#define LOCK_CONTENDED(_lock, try, lock) \
lock(_lock)
+#define LOCK_CONTENDED_RETURN(_lock, try, lock) \
+ lock(_lock)
+
#endif /* CONFIG_LOCK_STAT */
#ifdef CONFIG_LOCKDEP
diff --git a/include/linux/mfd/samsung/s2mps11.h b/include/linux/mfd/samsung/s2mps11.h
index b288965e8101..2c14eeca46f0 100644
--- a/include/linux/mfd/samsung/s2mps11.h
+++ b/include/linux/mfd/samsung/s2mps11.h
@@ -173,10 +173,12 @@ enum s2mps11_regulators {
#define S2MPS11_LDO_VSEL_MASK 0x3F
#define S2MPS11_BUCK_VSEL_MASK 0xFF
+#define S2MPS11_BUCK9_VSEL_MASK 0x1F
#define S2MPS11_ENABLE_MASK (0x03 << S2MPS11_ENABLE_SHIFT)
#define S2MPS11_ENABLE_SHIFT 0x06
#define S2MPS11_LDO_N_VOLTAGES (S2MPS11_LDO_VSEL_MASK + 1)
#define S2MPS11_BUCK_N_VOLTAGES (S2MPS11_BUCK_VSEL_MASK + 1)
+#define S2MPS11_BUCK9_N_VOLTAGES (S2MPS11_BUCK9_VSEL_MASK + 1)
#define S2MPS11_RAMP_DELAY 25000 /* uV/us */
#define S2MPS11_CTRL1_PWRHOLD_MASK BIT(4)
diff --git a/include/linux/mm.h b/include/linux/mm.h
index 864d7221de84..8f468e0d2534 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -500,11 +500,20 @@ static inline int page_mapcount(struct page *page)
#ifdef CONFIG_TRANSPARENT_HUGEPAGE
int total_mapcount(struct page *page);
+int page_trans_huge_mapcount(struct page *page, int *total_mapcount);
#else
static inline int total_mapcount(struct page *page)
{
return page_mapcount(page);
}
+static inline int page_trans_huge_mapcount(struct page *page,
+ int *total_mapcount)
+{
+ int mapcount = page_mapcount(page);
+ if (total_mapcount)
+ *total_mapcount = mapcount;
+ return mapcount;
+}
#endif
static inline struct page *virt_to_head_page(const void *x)
diff --git a/include/linux/namei.h b/include/linux/namei.h
index 77d01700daf7..ec5ec2818a28 100644
--- a/include/linux/namei.h
+++ b/include/linux/namei.h
@@ -79,6 +79,8 @@ extern int kern_path_mountpoint(int, const char *, struct path *, unsigned int);
extern struct dentry *lookup_one_len(const char *, struct dentry *, int);
extern struct dentry *lookup_one_len_unlocked(const char *, struct dentry *, int);
+struct qstr;
+extern struct dentry *lookup_hash(const struct qstr *, struct dentry *);
extern int follow_down_one(struct path *);
extern int follow_down(struct path *);
diff --git a/include/linux/perf_event.h b/include/linux/perf_event.h
index f291275ffd71..9e1c3ada91c4 100644
--- a/include/linux/perf_event.h
+++ b/include/linux/perf_event.h
@@ -58,7 +58,7 @@ struct perf_guest_info_callbacks {
struct perf_callchain_entry {
__u64 nr;
- __u64 ip[PERF_MAX_STACK_DEPTH];
+ __u64 ip[0]; /* /proc/sys/kernel/perf_event_max_stack */
};
struct perf_raw_record {
@@ -151,6 +151,15 @@ struct hw_perf_event {
*/
struct task_struct *target;
+ /*
+ * PMU would store hardware filter configuration
+ * here.
+ */
+ void *addr_filters;
+
+ /* Last sync'ed generation of filters */
+ unsigned long addr_filters_gen;
+
/*
* hw_perf_event::state flags; used to track the PERF_EF_* state.
*/
@@ -216,6 +225,7 @@ struct perf_event;
#define PERF_PMU_CAP_AUX_SW_DOUBLEBUF 0x08
#define PERF_PMU_CAP_EXCLUSIVE 0x10
#define PERF_PMU_CAP_ITRACE 0x20
+#define PERF_PMU_CAP_HETEROGENEOUS_CPUS 0x40
/**
* struct pmu - generic performance monitoring unit
@@ -240,6 +250,9 @@ struct pmu {
int task_ctx_nr;
int hrtimer_interval_ms;
+ /* number of address filters this PMU can do */
+ unsigned int nr_addr_filters;
+
/*
* Fully disable/enable this PMU, can be used to protect from the PMI
* as well as for lazy/batch writing of the MSRs.
@@ -393,12 +406,71 @@ struct pmu {
void (*free_aux) (void *aux); /* optional */
/*
+ * Validate address range filters: make sure the HW supports the
+ * requested configuration and number of filters; return 0 if the
+ * supplied filters are valid, -errno otherwise.
+ *
+ * Runs in the context of the ioctl()ing process and is not serialized
+ * with the rest of the PMU callbacks.
+ */
+ int (*addr_filters_validate) (struct list_head *filters);
+ /* optional */
+
+ /*
+ * Synchronize address range filter configuration:
+ * translate hw-agnostic filters into hardware configuration in
+ * event::hw::addr_filters.
+ *
+ * Runs as a part of filter sync sequence that is done in ->start()
+ * callback by calling perf_event_addr_filters_sync().
+ *
+ * May (and should) traverse event::addr_filters::list, for which its
+ * caller provides necessary serialization.
+ */
+ void (*addr_filters_sync) (struct perf_event *event);
+ /* optional */
+
+ /*
* Filter events for PMU-specific reasons.
*/
int (*filter_match) (struct perf_event *event); /* optional */
};
/**
+ * struct perf_addr_filter - address range filter definition
+ * @entry: event's filter list linkage
+ * @inode: object file's inode for file-based filters
+ * @offset: filter range offset
+ * @size: filter range size
+ * @range: 1: range, 0: address
+ * @filter: 1: filter/start, 0: stop
+ *
+ * This is a hardware-agnostic filter configuration as specified by the user.
+ */
+struct perf_addr_filter {
+ struct list_head entry;
+ struct inode *inode;
+ unsigned long offset;
+ unsigned long size;
+ unsigned int range : 1,
+ filter : 1;
+};
+
+/**
+ * struct perf_addr_filters_head - container for address range filters
+ * @list: list of filters for this event
+ * @lock: spinlock that serializes accesses to the @list and event's
+ * (and its children's) filter generations.
+ *
+ * A child event will use parent's @list (and therefore @lock), so they are
+ * bundled together; see perf_event_addr_filters().
+ */
+struct perf_addr_filters_head {
+ struct list_head list;
+ raw_spinlock_t lock;
+};
+
+/**
* enum perf_event_active_state - the states of a event
*/
enum perf_event_active_state {
@@ -566,6 +638,12 @@ struct perf_event {
atomic_t event_limit;
+ /* address range filters */
+ struct perf_addr_filters_head addr_filters;
+ /* vma address array for file-based filders */
+ unsigned long *addr_filters_offs;
+ unsigned long addr_filters_gen;
+
void (*destroy)(struct perf_event *);
struct rcu_head rcu_head;
@@ -834,9 +912,25 @@ extern int perf_event_overflow(struct perf_event *event,
struct perf_sample_data *data,
struct pt_regs *regs);
+extern void perf_event_output_forward(struct perf_event *event,
+ struct perf_sample_data *data,
+ struct pt_regs *regs);
+extern void perf_event_output_backward(struct perf_event *event,
+ struct perf_sample_data *data,
+ struct pt_regs *regs);
extern void perf_event_output(struct perf_event *event,
- struct perf_sample_data *data,
- struct pt_regs *regs);
+ struct perf_sample_data *data,
+ struct pt_regs *regs);
+
+static inline bool
+is_default_overflow_handler(struct perf_event *event)
+{
+ if (likely(event->overflow_handler == perf_event_output_forward))
+ return true;
+ if (unlikely(event->overflow_handler == perf_event_output_backward))
+ return true;
+ return false;
+}
extern void
perf_event_header__init_id(struct perf_event_header *header,
@@ -977,9 +1071,11 @@ get_perf_callchain(struct pt_regs *regs, u32 init_nr, bool kernel, bool user,
extern int get_callchain_buffers(void);
extern void put_callchain_buffers(void);
+extern int sysctl_perf_event_max_stack;
+
static inline int perf_callchain_store(struct perf_callchain_entry *entry, u64 ip)
{
- if (entry->nr < PERF_MAX_STACK_DEPTH) {
+ if (entry->nr < sysctl_perf_event_max_stack) {
entry->ip[entry->nr++] = ip;
return 0;
} else {
@@ -1001,6 +1097,8 @@ extern int perf_cpu_time_max_percent_handler(struct ctl_table *table, int write,
void __user *buffer, size_t *lenp,
loff_t *ppos);
+int perf_event_max_stack_handler(struct ctl_table *table, int write,
+ void __user *buffer, size_t *lenp, loff_t *ppos);
static inline bool perf_paranoid_tracepoint_raw(void)
{
@@ -1045,8 +1143,41 @@ static inline bool has_aux(struct perf_event *event)
return event->pmu->setup_aux;
}
+static inline bool is_write_backward(struct perf_event *event)
+{
+ return !!event->attr.write_backward;
+}
+
+static inline bool has_addr_filter(struct perf_event *event)
+{
+ return event->pmu->nr_addr_filters;
+}
+
+/*
+ * An inherited event uses parent's filters
+ */
+static inline struct perf_addr_filters_head *
+perf_event_addr_filters(struct perf_event *event)
+{
+ struct perf_addr_filters_head *ifh = &event->addr_filters;
+
+ if (event->parent)
+ ifh = &event->parent->addr_filters;
+
+ return ifh;
+}
+
+extern void perf_event_addr_filters_sync(struct perf_event *event);
+
extern int perf_output_begin(struct perf_output_handle *handle,
struct perf_event *event, unsigned int size);
+extern int perf_output_begin_forward(struct perf_output_handle *handle,
+ struct perf_event *event,
+ unsigned int size);
+extern int perf_output_begin_backward(struct perf_output_handle *handle,
+ struct perf_event *event,
+ unsigned int size);
+
extern void perf_output_end(struct perf_output_handle *handle);
extern unsigned int perf_output_copy(struct perf_output_handle *handle,
const void *buf, unsigned int len);
diff --git a/include/linux/proportions.h b/include/linux/proportions.h
deleted file mode 100644
index 21221338ad18..000000000000
--- a/include/linux/proportions.h
+++ /dev/null
@@ -1,137 +0,0 @@
-/*
- * FLoating proportions
- *
- * Copyright (C) 2007 Red Hat, Inc., Peter Zijlstra
- *
- * This file contains the public data structure and API definitions.
- */
-
-#ifndef _LINUX_PROPORTIONS_H
-#define _LINUX_PROPORTIONS_H
-
-#include <linux/percpu_counter.h>
-#include <linux/spinlock.h>
-#include <linux/mutex.h>
-#include <linux/gfp.h>
-
-struct prop_global {
- /*
- * The period over which we differentiate
- *
- * period = 2^shift
- */
- int shift;
- /*
- * The total event counter aka 'time'.
- *
- * Treated as an unsigned long; the lower 'shift - 1' bits are the
- * counter bits, the remaining upper bits the period counter.
- */
- struct percpu_counter events;
-};
-
-/*
- * global proportion descriptor
- *
- * this is needed to consistently flip prop_global structures.
- */
-struct prop_descriptor {
- int index;
- struct prop_global pg[2];
- struct mutex mutex; /* serialize the prop_global switch */
-};
-
-int prop_descriptor_init(struct prop_descriptor *pd, int shift, gfp_t gfp);
-void prop_change_shift(struct prop_descriptor *pd, int new_shift);
-
-/*
- * ----- PERCPU ------
- */
-
-struct prop_local_percpu {
- /*
- * the local events counter
- */
- struct percpu_counter events;
-
- /*
- * snapshot of the last seen global state
- */
- int shift;
- unsigned long period;
- raw_spinlock_t lock; /* protect the snapshot state */
-};
-
-int prop_local_init_percpu(struct prop_local_percpu *pl, gfp_t gfp);
-void prop_local_destroy_percpu(struct prop_local_percpu *pl);
-void __prop_inc_percpu(struct prop_descriptor *pd, struct prop_local_percpu *pl);
-void prop_fraction_percpu(struct prop_descriptor *pd, struct prop_local_percpu *pl,
- long *numerator, long *denominator);
-
-static inline
-void prop_inc_percpu(struct prop_descriptor *pd, struct prop_local_percpu *pl)
-{
- unsigned long flags;
-
- local_irq_save(flags);
- __prop_inc_percpu(pd, pl);
- local_irq_restore(flags);
-}
-
-/*
- * Limit the time part in order to ensure there are some bits left for the
- * cycle counter and fraction multiply.
- */
-#if BITS_PER_LONG == 32
-#define PROP_MAX_SHIFT (3*BITS_PER_LONG/4)
-#else
-#define PROP_MAX_SHIFT (BITS_PER_LONG/2)
-#endif
-
-#define PROP_FRAC_SHIFT (BITS_PER_LONG - PROP_MAX_SHIFT - 1)
-#define PROP_FRAC_BASE (1UL << PROP_FRAC_SHIFT)
-
-void __prop_inc_percpu_max(struct prop_descriptor *pd,
- struct prop_local_percpu *pl, long frac);
-
-
-/*
- * ----- SINGLE ------
- */
-
-struct prop_local_single {
- /*
- * the local events counter
- */
- unsigned long events;
-
- /*
- * snapshot of the last seen global state
- * and a lock protecting this state
- */
- unsigned long period;
- int shift;
- raw_spinlock_t lock; /* protect the snapshot state */
-};
-
-#define INIT_PROP_LOCAL_SINGLE(name) \
-{ .lock = __RAW_SPIN_LOCK_UNLOCKED(name.lock), \
-}
-
-int prop_local_init_single(struct prop_local_single *pl);
-void prop_local_destroy_single(struct prop_local_single *pl);
-void __prop_inc_single(struct prop_descriptor *pd, struct prop_local_single *pl);
-void prop_fraction_single(struct prop_descriptor *pd, struct prop_local_single *pl,
- long *numerator, long *denominator);
-
-static inline
-void prop_inc_single(struct prop_descriptor *pd, struct prop_local_single *pl)
-{
- unsigned long flags;
-
- local_irq_save(flags);
- __prop_inc_single(pd, pl);
- local_irq_restore(flags);
-}
-
-#endif /* _LINUX_PROPORTIONS_H */
diff --git a/include/linux/rcupdate.h b/include/linux/rcupdate.h
index 2657aff2725b..5f1533e3d032 100644
--- a/include/linux/rcupdate.h
+++ b/include/linux/rcupdate.h
@@ -508,14 +508,7 @@ int rcu_read_lock_bh_held(void);
* CONFIG_DEBUG_LOCK_ALLOC, this assumes we are in an RCU-sched read-side
* critical section unless it can prove otherwise.
*/
-#ifdef CONFIG_PREEMPT_COUNT
int rcu_read_lock_sched_held(void);
-#else /* #ifdef CONFIG_PREEMPT_COUNT */
-static inline int rcu_read_lock_sched_held(void)
-{
- return 1;
-}
-#endif /* #else #ifdef CONFIG_PREEMPT_COUNT */
#else /* #ifdef CONFIG_DEBUG_LOCK_ALLOC */
@@ -532,18 +525,10 @@ static inline int rcu_read_lock_bh_held(void)
return 1;
}
-#ifdef CONFIG_PREEMPT_COUNT
static inline int rcu_read_lock_sched_held(void)
{
- return preempt_count() != 0 || irqs_disabled();
-}
-#else /* #ifdef CONFIG_PREEMPT_COUNT */
-static inline int rcu_read_lock_sched_held(void)
-{
- return 1;
+ return !preemptible();
}
-#endif /* #else #ifdef CONFIG_PREEMPT_COUNT */
-
#endif /* #else #ifdef CONFIG_DEBUG_LOCK_ALLOC */
#ifdef CONFIG_PROVE_RCU
@@ -1144,4 +1129,17 @@ static inline void rcu_sysidle_force_exit(void)
#endif /* #else #ifdef CONFIG_NO_HZ_FULL_SYSIDLE */
+/*
+ * Dump the ftrace buffer, but only one time per callsite per boot.
+ */
+#define rcu_ftrace_dump(oops_dump_mode) \
+do { \
+ static atomic_t ___rfd_beenhere = ATOMIC_INIT(0); \
+ \
+ if (!atomic_read(&___rfd_beenhere) && \
+ !atomic_xchg(&___rfd_beenhere, 1)) \
+ ftrace_dump(oops_dump_mode); \
+} while (0)
+
+
#endif /* __LINUX_RCUPDATE_H */
diff --git a/include/linux/rcutiny.h b/include/linux/rcutiny.h
index 64809aea661c..93aea75029fb 100644
--- a/include/linux/rcutiny.h
+++ b/include/linux/rcutiny.h
@@ -149,6 +149,22 @@ static inline unsigned long rcu_batches_completed_sched(void)
return 0;
}
+/*
+ * Return the number of expedited grace periods completed.
+ */
+static inline unsigned long rcu_exp_batches_completed(void)
+{
+ return 0;
+}
+
+/*
+ * Return the number of expedited sched grace periods completed.
+ */
+static inline unsigned long rcu_exp_batches_completed_sched(void)
+{
+ return 0;
+}
+
static inline void rcu_force_quiescent_state(void)
{
}
diff --git a/include/linux/rcutree.h b/include/linux/rcutree.h
index ad1eda9fa4da..5043cb823fb2 100644
--- a/include/linux/rcutree.h
+++ b/include/linux/rcutree.h
@@ -87,6 +87,8 @@ unsigned long rcu_batches_started_sched(void);
unsigned long rcu_batches_completed(void);
unsigned long rcu_batches_completed_bh(void);
unsigned long rcu_batches_completed_sched(void);
+unsigned long rcu_exp_batches_completed(void);
+unsigned long rcu_exp_batches_completed_sched(void);
void show_rcu_gp_kthreads(void);
void rcu_force_quiescent_state(void);
diff --git a/include/linux/rwsem-spinlock.h b/include/linux/rwsem-spinlock.h
index 561e8615528d..ae0528b834cd 100644
--- a/include/linux/rwsem-spinlock.h
+++ b/include/linux/rwsem-spinlock.h
@@ -34,7 +34,7 @@ struct rw_semaphore {
extern void __down_read(struct rw_semaphore *sem);
extern int __down_read_trylock(struct rw_semaphore *sem);
extern void __down_write(struct rw_semaphore *sem);
-extern void __down_write_nested(struct rw_semaphore *sem, int subclass);
+extern int __must_check __down_write_killable(struct rw_semaphore *sem);
extern int __down_write_trylock(struct rw_semaphore *sem);
extern void __up_read(struct rw_semaphore *sem);
extern void __up_write(struct rw_semaphore *sem);
diff --git a/include/linux/rwsem.h b/include/linux/rwsem.h
index 8f498cdde280..d1c12d160ace 100644
--- a/include/linux/rwsem.h
+++ b/include/linux/rwsem.h
@@ -14,6 +14,7 @@
#include <linux/list.h>
#include <linux/spinlock.h>
#include <linux/atomic.h>
+#include <linux/err.h>
#ifdef CONFIG_RWSEM_SPIN_ON_OWNER
#include <linux/osq_lock.h>
#endif
@@ -43,6 +44,7 @@ struct rw_semaphore {
extern struct rw_semaphore *rwsem_down_read_failed(struct rw_semaphore *sem);
extern struct rw_semaphore *rwsem_down_write_failed(struct rw_semaphore *sem);
+extern struct rw_semaphore *rwsem_down_write_failed_killable(struct rw_semaphore *sem);
extern struct rw_semaphore *rwsem_wake(struct rw_semaphore *);
extern struct rw_semaphore *rwsem_downgrade_wake(struct rw_semaphore *sem);
@@ -116,6 +118,7 @@ extern int down_read_trylock(struct rw_semaphore *sem);
* lock for writing
*/
extern void down_write(struct rw_semaphore *sem);
+extern int __must_check down_write_killable(struct rw_semaphore *sem);
/*
* trylock for writing -- returns 1 if successful, 0 if contention
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 38526b67e787..6cc0df970f1a 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -40,7 +40,6 @@ struct sched_param {
#include <linux/pid.h>
#include <linux/percpu.h>
#include <linux/topology.h>
-#include <linux/proportions.h>
#include <linux/seccomp.h>
#include <linux/rcupdate.h>
#include <linux/rculist.h>
@@ -1655,6 +1654,7 @@ struct task_struct {
unsigned long sas_ss_sp;
size_t sas_ss_size;
+ unsigned sas_ss_flags;
struct callback_head *task_works;
@@ -2667,6 +2667,18 @@ static inline int kill_cad_pid(int sig, int priv)
*/
static inline int on_sig_stack(unsigned long sp)
{
+ /*
+ * If the signal stack is SS_AUTODISARM then, by construction, we
+ * can't be on the signal stack unless user code deliberately set
+ * SS_AUTODISARM when we were already on it.
+ *
+ * This improves reliability: if user state gets corrupted such that
+ * the stack pointer points very close to the end of the signal stack,
+ * then this check will enable the signal to be handled anyway.
+ */
+ if (current->sas_ss_flags & SS_AUTODISARM)
+ return 0;
+
#ifdef CONFIG_STACK_GROWSUP
return sp >= current->sas_ss_sp &&
sp - current->sas_ss_sp < current->sas_ss_size;
@@ -2684,6 +2696,13 @@ static inline int sas_ss_flags(unsigned long sp)
return on_sig_stack(sp) ? SS_ONSTACK : 0;
}
+static inline void sas_ss_reset(struct task_struct *p)
+{
+ p->sas_ss_sp = 0;
+ p->sas_ss_size = 0;
+ p->sas_ss_flags = SS_DISABLE;
+}
+
static inline unsigned long sigsp(unsigned long sp, struct ksignal *ksig)
{
if (unlikely((ksig->ka.sa.sa_flags & SA_ONSTACK)) && ! sas_ss_flags(sp))
diff --git a/include/linux/signal.h b/include/linux/signal.h
index 92557bbce7e7..3fbe81444d31 100644
--- a/include/linux/signal.h
+++ b/include/linux/signal.h
@@ -432,8 +432,10 @@ int __save_altstack(stack_t __user *, unsigned long);
stack_t __user *__uss = uss; \
struct task_struct *t = current; \
put_user_ex((void __user *)t->sas_ss_sp, &__uss->ss_sp); \
- put_user_ex(sas_ss_flags(sp), &__uss->ss_flags); \
+ put_user_ex(t->sas_ss_flags, &__uss->ss_flags); \
put_user_ex(t->sas_ss_size, &__uss->ss_size); \
+ if (t->sas_ss_flags & SS_AUTODISARM) \
+ sas_ss_reset(t); \
} while (0);
#ifdef CONFIG_PROC_FS
diff --git a/include/linux/swap.h b/include/linux/swap.h
index 0a4cd4703f40..ad220359f1b0 100644
--- a/include/linux/swap.h
+++ b/include/linux/swap.h
@@ -418,7 +418,7 @@ extern sector_t swapdev_block(int, pgoff_t);
extern int page_swapcount(struct page *);
extern int swp_swapcount(swp_entry_t entry);
extern struct swap_info_struct *page_swap_info(struct page *);
-extern int reuse_swap_page(struct page *);
+extern bool reuse_swap_page(struct page *, int *);
extern int try_to_free_swap(struct page *);
struct backing_dev_info;
@@ -513,8 +513,8 @@ static inline int swp_swapcount(swp_entry_t entry)
return 0;
}
-#define reuse_swap_page(page) \
- (!PageTransCompound(page) && page_mapcount(page) == 1)
+#define reuse_swap_page(page, total_mapcount) \
+ (page_trans_huge_mapcount(page, total_mapcount) == 1)
static inline int try_to_free_swap(struct page *page)
{
diff --git a/include/linux/uio.h b/include/linux/uio.h
index fd9bcfedad42..1b5d1cd796e2 100644
--- a/include/linux/uio.h
+++ b/include/linux/uio.h
@@ -87,6 +87,7 @@ size_t copy_from_iter(void *addr, size_t bytes, struct iov_iter *i);
size_t copy_from_iter_nocache(void *addr, size_t bytes, struct iov_iter *i);
size_t iov_iter_zero(size_t bytes, struct iov_iter *);
unsigned long iov_iter_alignment(const struct iov_iter *i);
+unsigned long iov_iter_gap_alignment(const struct iov_iter *i);
void iov_iter_init(struct iov_iter *i, int direction, const struct iovec *iov,
unsigned long nr_segs, size_t count);
void iov_iter_kvec(struct iov_iter *i, int direction, const struct kvec *kvec,
diff --git a/include/trace/events/rcu.h b/include/trace/events/rcu.h
index ef72c4aada56..d3e756539d44 100644
--- a/include/trace/events/rcu.h
+++ b/include/trace/events/rcu.h
@@ -172,6 +172,77 @@ TRACE_EVENT(rcu_grace_period_init,
);
/*
+ * Tracepoint for expedited grace-period events. Takes a string identifying
+ * the RCU flavor, the expedited grace-period sequence number, and a string
+ * identifying the grace-period-related event as follows:
+ *
+ * "snap": Captured snapshot of expedited grace period sequence number.
+ * "start": Started a real expedited grace period.
+ * "end": Ended a real expedited grace period.
+ * "endwake": Woke piggybackers up.
+ * "done": Someone else did the expedited grace period for us.
+ */
+TRACE_EVENT(rcu_exp_grace_period,
+
+ TP_PROTO(const char *rcuname, unsigned long gpseq, const char *gpevent),
+
+ TP_ARGS(rcuname, gpseq, gpevent),
+
+ TP_STRUCT__entry(
+ __field(const char *, rcuname)
+ __field(unsigned long, gpseq)
+ __field(const char *, gpevent)
+ ),
+
+ TP_fast_assign(
+ __entry->rcuname = rcuname;
+ __entry->gpseq = gpseq;
+ __entry->gpevent = gpevent;
+ ),
+
+ TP_printk("%s %lu %s",
+ __entry->rcuname, __entry->gpseq, __entry->gpevent)
+);
+
+/*
+ * Tracepoint for expedited grace-period funnel-locking events. Takes a
+ * string identifying the RCU flavor, an integer identifying the rcu_node
+ * combining-tree level, another pair of integers identifying the lowest-
+ * and highest-numbered CPU associated with the current rcu_node structure,
+ * and a string. identifying the grace-period-related event as follows:
+ *
+ * "nxtlvl": Advance to next level of rcu_node funnel
+ * "wait": Wait for someone else to do expedited GP
+ */
+TRACE_EVENT(rcu_exp_funnel_lock,
+
+ TP_PROTO(const char *rcuname, u8 level, int grplo, int grphi,
+ const char *gpevent),
+
+ TP_ARGS(rcuname, level, grplo, grphi, gpevent),
+
+ TP_STRUCT__entry(
+ __field(const char *, rcuname)
+ __field(u8, level)
+ __field(int, grplo)
+ __field(int, grphi)
+ __field(const char *, gpevent)
+ ),
+
+ TP_fast_assign(
+ __entry->rcuname = rcuname;
+ __entry->level = level;
+ __entry->grplo = grplo;
+ __entry->grphi = grphi;
+ __entry->gpevent = gpevent;
+ ),
+
+ TP_printk("%s %d %d %d %s",
+ __entry->rcuname, __entry->level, __entry->grplo,
+ __entry->grphi, __entry->gpevent)
+);
+
+/*
* Tracepoint for RCU no-CBs CPU callback handoffs. This event is intended
* to assist debugging of these handoffs.
*
@@ -704,11 +775,15 @@ TRACE_EVENT(rcu_barrier,
#else /* #ifdef CONFIG_RCU_TRACE */
#define trace_rcu_grace_period(rcuname, gpnum, gpevent) do { } while (0)
-#define trace_rcu_grace_period_init(rcuname, gpnum, level, grplo, grphi, \
- qsmask) do { } while (0)
#define trace_rcu_future_grace_period(rcuname, gpnum, completed, c, \
level, grplo, grphi, event) \
do { } while (0)
+#define trace_rcu_grace_period_init(rcuname, gpnum, level, grplo, grphi, \
+ qsmask) do { } while (0)
+#define trace_rcu_exp_grace_period(rcuname, gqseq, gpevent) \
+ do { } while (0)
+#define trace_rcu_exp_funnel_lock(rcuname, level, grplo, grphi, gpevent) \
+ do { } while (0)
#define trace_rcu_nocb_wake(rcuname, cpu, reason) do { } while (0)
#define trace_rcu_preempt_task(rcuname, pid, gpnum) do { } while (0)
#define trace_rcu_unlock_preempted_task(rcuname, gpnum, pid) do { } while (0)
diff --git a/include/uapi/linux/if.h b/include/uapi/linux/if.h
index f80277569f24..e601c8c3bdc7 100644
--- a/include/uapi/linux/if.h
+++ b/include/uapi/linux/if.h
@@ -19,14 +19,20 @@
#ifndef _LINUX_IF_H
#define _LINUX_IF_H
+#include <linux/libc-compat.h> /* for compatibility with glibc */
#include <linux/types.h> /* for "__kernel_caddr_t" et al */
#include <linux/socket.h> /* for "struct sockaddr" et al */
#include <linux/compiler.h> /* for "__user" et al */
+#if __UAPI_DEF_IF_IFNAMSIZ
#define IFNAMSIZ 16
+#endif /* __UAPI_DEF_IF_IFNAMSIZ */
#define IFALIASZ 256
#include <linux/hdlc/ioctl.h>
+/* For glibc compatibility. An empty enum does not compile. */
+#if __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO != 0 && \
+ __UAPI_DEF_IF_NET_DEVICE_FLAGS != 0
/**
* enum net_device_flags - &struct net_device flags
*
@@ -68,6 +74,8 @@
* @IFF_ECHO: echo sent packets. Volatile.
*/
enum net_device_flags {
+/* for compatibility with glibc net/if.h */
+#if __UAPI_DEF_IF_NET_DEVICE_FLAGS
IFF_UP = 1<<0, /* sysfs */
IFF_BROADCAST = 1<<1, /* volatile */
IFF_DEBUG = 1<<2, /* sysfs */
@@ -84,11 +92,17 @@ enum net_device_flags {
IFF_PORTSEL = 1<<13, /* sysfs */
IFF_AUTOMEDIA = 1<<14, /* sysfs */
IFF_DYNAMIC = 1<<15, /* sysfs */
+#endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS */
+#if __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO
IFF_LOWER_UP = 1<<16, /* volatile */
IFF_DORMANT = 1<<17, /* volatile */
IFF_ECHO = 1<<18, /* volatile */
+#endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO */
};
+#endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO != 0 && __UAPI_DEF_IF_NET_DEVICE_FLAGS != 0 */
+/* for compatibility with glibc net/if.h */
+#if __UAPI_DEF_IF_NET_DEVICE_FLAGS
#define IFF_UP IFF_UP
#define IFF_BROADCAST IFF_BROADCAST
#define IFF_DEBUG IFF_DEBUG
@@ -105,9 +119,13 @@ enum net_device_flags {
#define IFF_PORTSEL IFF_PORTSEL
#define IFF_AUTOMEDIA IFF_AUTOMEDIA
#define IFF_DYNAMIC IFF_DYNAMIC
+#endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS */
+
+#if __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO
#define IFF_LOWER_UP IFF_LOWER_UP
#define IFF_DORMANT IFF_DORMANT
#define IFF_ECHO IFF_ECHO
+#endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO */
#define IFF_VOLATILE (IFF_LOOPBACK|IFF_POINTOPOINT|IFF_BROADCAST|IFF_ECHO|\
IFF_MASTER|IFF_SLAVE|IFF_RUNNING|IFF_LOWER_UP|IFF_DORMANT)
@@ -166,6 +184,8 @@ enum {
* being very small might be worth keeping for clean configuration.
*/
+/* for compatibility with glibc net/if.h */
+#if __UAPI_DEF_IF_IFMAP
struct ifmap {
unsigned long mem_start;
unsigned long mem_end;
@@ -175,6 +195,7 @@ struct ifmap {
unsigned char port;
/* 3 bytes spare */
};
+#endif /* __UAPI_DEF_IF_IFMAP */
struct if_settings {
unsigned int type; /* Type of physical device or protocol */
@@ -200,6 +221,8 @@ struct if_settings {
* remainder may be interface specific.
*/
+/* for compatibility with glibc net/if.h */
+#if __UAPI_DEF_IF_IFREQ
struct ifreq {
#define IFHWADDRLEN 6
union
@@ -223,6 +246,7 @@ struct ifreq {
struct if_settings ifru_settings;
} ifr_ifru;
};
+#endif /* __UAPI_DEF_IF_IFREQ */
#define ifr_name ifr_ifrn.ifrn_name /* interface name */
#define ifr_hwaddr ifr_ifru.ifru_hwaddr /* MAC address */
@@ -249,6 +273,8 @@ struct ifreq {
* must know all networks accessible).
*/
+/* for compatibility with glibc net/if.h */
+#if __UAPI_DEF_IF_IFCONF
struct ifconf {
int ifc_len; /* size of buffer */
union {
@@ -256,6 +282,8 @@ struct ifconf {
struct ifreq __user *ifcu_req;
} ifc_ifcu;
};
+#endif /* __UAPI_DEF_IF_IFCONF */
+
#define ifc_buf ifc_ifcu.ifcu_buf /* buffer address */
#define ifc_req ifc_ifcu.ifcu_req /* array of structures */
diff --git a/include/uapi/linux/libc-compat.h b/include/uapi/linux/libc-compat.h
index 7d024ceb075d..d5e38c73377c 100644
--- a/include/uapi/linux/libc-compat.h
+++ b/include/uapi/linux/libc-compat.h
@@ -51,6 +51,40 @@
/* We have included glibc headers... */
#if defined(__GLIBC__)
+/* Coordinate with glibc net/if.h header. */
+#if defined(_NET_IF_H)
+
+/* GLIBC headers included first so don't define anything
+ * that would already be defined. */
+
+#define __UAPI_DEF_IF_IFCONF 0
+#define __UAPI_DEF_IF_IFMAP 0
+#define __UAPI_DEF_IF_IFNAMSIZ 0
+#define __UAPI_DEF_IF_IFREQ 0
+/* Everything up to IFF_DYNAMIC, matches net/if.h until glibc 2.23 */
+#define __UAPI_DEF_IF_NET_DEVICE_FLAGS 0
+/* For the future if glibc adds IFF_LOWER_UP, IFF_DORMANT and IFF_ECHO */
+#ifndef __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO
+#define __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO 1
+#endif /* __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO */
+
+#else /* _NET_IF_H */
+
+/* Linux headers included first, and we must define everything
+ * we need. The expectation is that glibc will check the
+ * __UAPI_DEF_* defines and adjust appropriately. */
+
+#define __UAPI_DEF_IF_IFCONF 1
+#define __UAPI_DEF_IF_IFMAP 1
+#define __UAPI_DEF_IF_IFNAMSIZ 1
+#define __UAPI_DEF_IF_IFREQ 1
+/* Everything up to IFF_DYNAMIC, matches net/if.h until glibc 2.23 */
+#define __UAPI_DEF_IF_NET_DEVICE_FLAGS 1
+/* For the future if glibc adds IFF_LOWER_UP, IFF_DORMANT and IFF_ECHO */
+#define __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO 1
+
+#endif /* _NET_IF_H */
+
/* Coordinate with glibc netinet/in.h header. */
#if defined(_NETINET_IN_H)
@@ -117,6 +151,16 @@
* that we need. */
#else /* !defined(__GLIBC__) */
+/* Definitions for if.h */
+#define __UAPI_DEF_IF_IFCONF 1
+#define __UAPI_DEF_IF_IFMAP 1
+#define __UAPI_DEF_IF_IFNAMSIZ 1
+#define __UAPI_DEF_IF_IFREQ 1
+/* Everything up to IFF_DYNAMIC, matches net/if.h until glibc 2.23 */
+#define __UAPI_DEF_IF_NET_DEVICE_FLAGS 1
+/* For the future if glibc adds IFF_LOWER_UP, IFF_DORMANT and IFF_ECHO */
+#define __UAPI_DEF_IF_NET_DEVICE_FLAGS_LOWER_UP_DORMANT_ECHO 1
+
/* Definitions for in.h */
#define __UAPI_DEF_IN_ADDR 1
#define __UAPI_DEF_IN_IPPROTO 1
diff --git a/include/uapi/linux/perf_event.h b/include/uapi/linux/perf_event.h
index 1afe9623c1a7..43fc8d213472 100644
--- a/include/uapi/linux/perf_event.h
+++ b/include/uapi/linux/perf_event.h
@@ -340,7 +340,8 @@ struct perf_event_attr {
comm_exec : 1, /* flag comm events that are due to an exec */
use_clockid : 1, /* use @clockid for time fields */
context_switch : 1, /* context switch data */
- __reserved_1 : 37;
+ write_backward : 1, /* Write ring buffer from end to beginning */
+ __reserved_1 : 36;
union {
__u32 wakeup_events; /* wakeup every n events */
@@ -401,6 +402,7 @@ struct perf_event_attr {
#define PERF_EVENT_IOC_SET_FILTER _IOW('$', 6, char *)
#define PERF_EVENT_IOC_ID _IOR('$', 7, __u64 *)
#define PERF_EVENT_IOC_SET_BPF _IOW('$', 8, __u32)
+#define PERF_EVENT_IOC_PAUSE_OUTPUT _IOW('$', 9, __u32)
enum perf_event_ioc_flags {
PERF_IOC_FLAG_GROUP = 1U << 0,
diff --git a/include/uapi/linux/signal.h b/include/uapi/linux/signal.h
index e1bd50c29ded..cd0804b6bfa2 100644
--- a/include/uapi/linux/signal.h
+++ b/include/uapi/linux/signal.h
@@ -7,4 +7,9 @@
#define SS_ONSTACK 1
#define SS_DISABLE 2
+/* bit-flags */
+#define SS_AUTODISARM (1U << 31) /* disable sas during sighandling */
+/* mask for all SS_xxx flags */
+#define SS_FLAG_BITS SS_AUTODISARM
+
#endif /* _UAPI_LINUX_SIGNAL_H */
diff --git a/include/uapi/linux/tc_act/Kbuild b/include/uapi/linux/tc_act/Kbuild
index 242cf0c6e33d..e3969bd939e4 100644
--- a/include/uapi/linux/tc_act/Kbuild
+++ b/include/uapi/linux/tc_act/Kbuild
@@ -10,3 +10,4 @@ header-y += tc_skbedit.h
header-y += tc_vlan.h
header-y += tc_bpf.h
header-y += tc_connmark.h
+header-y += tc_ife.h
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