diff options
Diffstat (limited to 'include')
29 files changed, 371 insertions, 305 deletions
diff --git a/include/asm-generic/bitops.h b/include/asm-generic/bitops.h index a54f4421a24..280ca7a96f7 100644 --- a/include/asm-generic/bitops.h +++ b/include/asm-generic/bitops.h @@ -38,8 +38,7 @@ #include <asm-generic/bitops/atomic.h> #include <asm-generic/bitops/non-atomic.h> -#include <asm-generic/bitops/ext2-non-atomic.h> +#include <asm-generic/bitops/le.h> #include <asm-generic/bitops/ext2-atomic.h> -#include <asm-generic/bitops/minix.h> #endif /* __ASM_GENERIC_BITOPS_H */ diff --git a/include/asm-generic/bitops/ext2-atomic.h b/include/asm-generic/bitops/ext2-atomic.h index ab1c875efb7..ecf1c9d8a7c 100644 --- a/include/asm-generic/bitops/ext2-atomic.h +++ b/include/asm-generic/bitops/ext2-atomic.h @@ -5,7 +5,7 @@ ({ \ int ret; \ spin_lock(lock); \ - ret = ext2_set_bit((nr), (unsigned long *)(addr)); \ + ret = __test_and_set_bit_le(nr, addr); \ spin_unlock(lock); \ ret; \ }) @@ -14,7 +14,7 @@ ({ \ int ret; \ spin_lock(lock); \ - ret = ext2_clear_bit((nr), (unsigned long *)(addr)); \ + ret = __test_and_clear_bit_le(nr, addr); \ spin_unlock(lock); \ ret; \ }) diff --git a/include/asm-generic/bitops/ext2-non-atomic.h b/include/asm-generic/bitops/ext2-non-atomic.h deleted file mode 100644 index 63cf822431a..00000000000 --- a/include/asm-generic/bitops/ext2-non-atomic.h +++ /dev/null @@ -1,20 +0,0 @@ -#ifndef _ASM_GENERIC_BITOPS_EXT2_NON_ATOMIC_H_ -#define _ASM_GENERIC_BITOPS_EXT2_NON_ATOMIC_H_ - -#include <asm-generic/bitops/le.h> - -#define ext2_set_bit(nr,addr) \ - generic___test_and_set_le_bit((nr),(unsigned long *)(addr)) -#define ext2_clear_bit(nr,addr) \ - generic___test_and_clear_le_bit((nr),(unsigned long *)(addr)) - -#define ext2_test_bit(nr,addr) \ - generic_test_le_bit((nr),(unsigned long *)(addr)) -#define ext2_find_first_zero_bit(addr, size) \ - generic_find_first_zero_le_bit((unsigned long *)(addr), (size)) -#define ext2_find_next_zero_bit(addr, size, off) \ - generic_find_next_zero_le_bit((unsigned long *)(addr), (size), (off)) -#define ext2_find_next_bit(addr, size, off) \ - generic_find_next_le_bit((unsigned long *)(addr), (size), (off)) - -#endif /* _ASM_GENERIC_BITOPS_EXT2_NON_ATOMIC_H_ */ diff --git a/include/asm-generic/bitops/le.h b/include/asm-generic/bitops/le.h index 80e3bf13b2b..946a21b1b5d 100644 --- a/include/asm-generic/bitops/le.h +++ b/include/asm-generic/bitops/le.h @@ -4,54 +4,77 @@ #include <asm/types.h> #include <asm/byteorder.h> -#define BITOP_WORD(nr) ((nr) / BITS_PER_LONG) -#define BITOP_LE_SWIZZLE ((BITS_PER_LONG-1) & ~0x7) - #if defined(__LITTLE_ENDIAN) -#define generic_test_le_bit(nr, addr) test_bit(nr, addr) -#define generic___set_le_bit(nr, addr) __set_bit(nr, addr) -#define generic___clear_le_bit(nr, addr) __clear_bit(nr, addr) +#define BITOP_LE_SWIZZLE 0 -#define generic_test_and_set_le_bit(nr, addr) test_and_set_bit(nr, addr) -#define generic_test_and_clear_le_bit(nr, addr) test_and_clear_bit(nr, addr) +static inline unsigned long find_next_zero_bit_le(const void *addr, + unsigned long size, unsigned long offset) +{ + return find_next_zero_bit(addr, size, offset); +} -#define generic___test_and_set_le_bit(nr, addr) __test_and_set_bit(nr, addr) -#define generic___test_and_clear_le_bit(nr, addr) __test_and_clear_bit(nr, addr) +static inline unsigned long find_next_bit_le(const void *addr, + unsigned long size, unsigned long offset) +{ + return find_next_bit(addr, size, offset); +} -#define generic_find_next_zero_le_bit(addr, size, offset) find_next_zero_bit(addr, size, offset) -#define generic_find_next_le_bit(addr, size, offset) \ - find_next_bit(addr, size, offset) +static inline unsigned long find_first_zero_bit_le(const void *addr, + unsigned long size) +{ + return find_first_zero_bit(addr, size); +} #elif defined(__BIG_ENDIAN) -#define generic_test_le_bit(nr, addr) \ - test_bit((nr) ^ BITOP_LE_SWIZZLE, (addr)) -#define generic___set_le_bit(nr, addr) \ - __set_bit((nr) ^ BITOP_LE_SWIZZLE, (addr)) -#define generic___clear_le_bit(nr, addr) \ - __clear_bit((nr) ^ BITOP_LE_SWIZZLE, (addr)) - -#define generic_test_and_set_le_bit(nr, addr) \ - test_and_set_bit((nr) ^ BITOP_LE_SWIZZLE, (addr)) -#define generic_test_and_clear_le_bit(nr, addr) \ - test_and_clear_bit((nr) ^ BITOP_LE_SWIZZLE, (addr)) - -#define generic___test_and_set_le_bit(nr, addr) \ - __test_and_set_bit((nr) ^ BITOP_LE_SWIZZLE, (addr)) -#define generic___test_and_clear_le_bit(nr, addr) \ - __test_and_clear_bit((nr) ^ BITOP_LE_SWIZZLE, (addr)) +#define BITOP_LE_SWIZZLE ((BITS_PER_LONG-1) & ~0x7) -extern unsigned long generic_find_next_zero_le_bit(const unsigned long *addr, +extern unsigned long find_next_zero_bit_le(const void *addr, unsigned long size, unsigned long offset); -extern unsigned long generic_find_next_le_bit(const unsigned long *addr, +extern unsigned long find_next_bit_le(const void *addr, unsigned long size, unsigned long offset); +#define find_first_zero_bit_le(addr, size) \ + find_next_zero_bit_le((addr), (size), 0) + #else #error "Please fix <asm/byteorder.h>" #endif -#define generic_find_first_zero_le_bit(addr, size) \ - generic_find_next_zero_le_bit((addr), (size), 0) +static inline int test_bit_le(int nr, const void *addr) +{ + return test_bit(nr ^ BITOP_LE_SWIZZLE, addr); +} + +static inline void __set_bit_le(int nr, void *addr) +{ + __set_bit(nr ^ BITOP_LE_SWIZZLE, addr); +} + +static inline void __clear_bit_le(int nr, void *addr) +{ + __clear_bit(nr ^ BITOP_LE_SWIZZLE, addr); +} + +static inline int test_and_set_bit_le(int nr, void *addr) +{ + return test_and_set_bit(nr ^ BITOP_LE_SWIZZLE, addr); +} + +static inline int test_and_clear_bit_le(int nr, void *addr) +{ + return test_and_clear_bit(nr ^ BITOP_LE_SWIZZLE, addr); +} + +static inline int __test_and_set_bit_le(int nr, void *addr) +{ + return __test_and_set_bit(nr ^ BITOP_LE_SWIZZLE, addr); +} + +static inline int __test_and_clear_bit_le(int nr, void *addr) +{ + return __test_and_clear_bit(nr ^ BITOP_LE_SWIZZLE, addr); +} #endif /* _ASM_GENERIC_BITOPS_LE_H_ */ diff --git a/include/asm-generic/bitops/minix-le.h b/include/asm-generic/bitops/minix-le.h deleted file mode 100644 index 4a981c1bb1a..00000000000 --- a/include/asm-generic/bitops/minix-le.h +++ /dev/null @@ -1,17 +0,0 @@ -#ifndef _ASM_GENERIC_BITOPS_MINIX_LE_H_ -#define _ASM_GENERIC_BITOPS_MINIX_LE_H_ - -#include <asm-generic/bitops/le.h> - -#define minix_test_and_set_bit(nr,addr) \ - generic___test_and_set_le_bit((nr),(unsigned long *)(addr)) -#define minix_set_bit(nr,addr) \ - generic___set_le_bit((nr),(unsigned long *)(addr)) -#define minix_test_and_clear_bit(nr,addr) \ - generic___test_and_clear_le_bit((nr),(unsigned long *)(addr)) -#define minix_test_bit(nr,addr) \ - generic_test_le_bit((nr),(unsigned long *)(addr)) -#define minix_find_first_zero_bit(addr,size) \ - generic_find_first_zero_le_bit((unsigned long *)(addr),(size)) - -#endif /* _ASM_GENERIC_BITOPS_MINIX_LE_H_ */ diff --git a/include/asm-generic/bitops/minix.h b/include/asm-generic/bitops/minix.h deleted file mode 100644 index 91f42e87aa5..00000000000 --- a/include/asm-generic/bitops/minix.h +++ /dev/null @@ -1,15 +0,0 @@ -#ifndef _ASM_GENERIC_BITOPS_MINIX_H_ -#define _ASM_GENERIC_BITOPS_MINIX_H_ - -#define minix_test_and_set_bit(nr,addr) \ - __test_and_set_bit((nr),(unsigned long *)(addr)) -#define minix_set_bit(nr,addr) \ - __set_bit((nr),(unsigned long *)(addr)) -#define minix_test_and_clear_bit(nr,addr) \ - __test_and_clear_bit((nr),(unsigned long *)(addr)) -#define minix_test_bit(nr,addr) \ - test_bit((nr),(unsigned long *)(addr)) -#define minix_find_first_zero_bit(addr,size) \ - find_first_zero_bit((unsigned long *)(addr),(size)) - -#endif /* _ASM_GENERIC_BITOPS_MINIX_H_ */ diff --git a/include/linux/amba/clcd.h b/include/linux/amba/clcd.h index be33b3affc8..24d26efd143 100644 --- a/include/linux/amba/clcd.h +++ b/include/linux/amba/clcd.h @@ -53,6 +53,7 @@ #define CNTL_LCDBPP8 (3 << 1) #define CNTL_LCDBPP16 (4 << 1) #define CNTL_LCDBPP16_565 (6 << 1) +#define CNTL_LCDBPP16_444 (7 << 1) #define CNTL_LCDBPP24 (5 << 1) #define CNTL_LCDBW (1 << 4) #define CNTL_LCDTFT (1 << 5) @@ -66,6 +67,32 @@ #define CNTL_LDMAFIFOTIME (1 << 15) #define CNTL_WATERMARK (1 << 16) +enum { + /* individual formats */ + CLCD_CAP_RGB444 = (1 << 0), + CLCD_CAP_RGB5551 = (1 << 1), + CLCD_CAP_RGB565 = (1 << 2), + CLCD_CAP_RGB888 = (1 << 3), + CLCD_CAP_BGR444 = (1 << 4), + CLCD_CAP_BGR5551 = (1 << 5), + CLCD_CAP_BGR565 = (1 << 6), + CLCD_CAP_BGR888 = (1 << 7), + + /* connection layouts */ + CLCD_CAP_444 = CLCD_CAP_RGB444 | CLCD_CAP_BGR444, + CLCD_CAP_5551 = CLCD_CAP_RGB5551 | CLCD_CAP_BGR5551, + CLCD_CAP_565 = CLCD_CAP_RGB565 | CLCD_CAP_BGR565, + CLCD_CAP_888 = CLCD_CAP_RGB888 | CLCD_CAP_BGR888, + + /* red/blue ordering */ + CLCD_CAP_RGB = CLCD_CAP_RGB444 | CLCD_CAP_RGB5551 | + CLCD_CAP_RGB565 | CLCD_CAP_RGB888, + CLCD_CAP_BGR = CLCD_CAP_BGR444 | CLCD_CAP_BGR5551 | + CLCD_CAP_BGR565 | CLCD_CAP_BGR888, + + CLCD_CAP_ALL = CLCD_CAP_BGR | CLCD_CAP_RGB, +}; + struct clcd_panel { struct fb_videomode mode; signed short width; /* width in mm */ @@ -73,6 +100,7 @@ struct clcd_panel { u32 tim2; u32 tim3; u32 cntl; + u32 caps; unsigned int bpp:8, fixedtimings:1, grayscale:1; @@ -97,6 +125,11 @@ struct clcd_board { const char *name; /* + * Optional. Hardware capability flags. + */ + u32 caps; + + /* * Optional. Check whether the var structure is acceptable * for this display. */ @@ -155,34 +188,35 @@ struct clcd_fb { static inline void clcdfb_decode(struct clcd_fb *fb, struct clcd_regs *regs) { + struct fb_var_screeninfo *var = &fb->fb.var; u32 val, cpl; /* * Program the CLCD controller registers and start the CLCD */ - val = ((fb->fb.var.xres / 16) - 1) << 2; - val |= (fb->fb.var.hsync_len - 1) << 8; - val |= (fb->fb.var.right_margin - 1) << 16; - val |= (fb->fb.var.left_margin - 1) << 24; + val = ((var->xres / 16) - 1) << 2; + val |= (var->hsync_len - 1) << 8; + val |= (var->right_margin - 1) << 16; + val |= (var->left_margin - 1) << 24; regs->tim0 = val; - val = fb->fb.var.yres; + val = var->yres; if (fb->panel->cntl & CNTL_LCDDUAL) val /= 2; val -= 1; - val |= (fb->fb.var.vsync_len - 1) << 10; - val |= fb->fb.var.lower_margin << 16; - val |= fb->fb.var.upper_margin << 24; + val |= (var->vsync_len - 1) << 10; + val |= var->lower_margin << 16; + val |= var->upper_margin << 24; regs->tim1 = val; val = fb->panel->tim2; - val |= fb->fb.var.sync & FB_SYNC_HOR_HIGH_ACT ? 0 : TIM2_IHS; - val |= fb->fb.var.sync & FB_SYNC_VERT_HIGH_ACT ? 0 : TIM2_IVS; + val |= var->sync & FB_SYNC_HOR_HIGH_ACT ? 0 : TIM2_IHS; + val |= var->sync & FB_SYNC_VERT_HIGH_ACT ? 0 : TIM2_IVS; - cpl = fb->fb.var.xres_virtual; + cpl = var->xres_virtual; if (fb->panel->cntl & CNTL_LCDTFT) /* TFT */ /* / 1 */; - else if (!fb->fb.var.grayscale) /* STN color */ + else if (!var->grayscale) /* STN color */ cpl = cpl * 8 / 3; else if (fb->panel->cntl & CNTL_LCDMONO8) /* STN monochrome, 8bit */ cpl /= 8; @@ -194,10 +228,22 @@ static inline void clcdfb_decode(struct clcd_fb *fb, struct clcd_regs *regs) regs->tim3 = fb->panel->tim3; val = fb->panel->cntl; - if (fb->fb.var.grayscale) + if (var->grayscale) val |= CNTL_LCDBW; - switch (fb->fb.var.bits_per_pixel) { + if (fb->panel->caps && fb->board->caps && + var->bits_per_pixel >= 16) { + /* + * if board and panel supply capabilities, we can support + * changing BGR/RGB depending on supplied parameters + */ + if (var->red.offset == 0) + val &= ~CNTL_BGR; + else + val |= CNTL_BGR; + } + + switch (var->bits_per_pixel) { case 1: val |= CNTL_LCDBPP1; break; @@ -212,15 +258,17 @@ static inline void clcdfb_decode(struct clcd_fb *fb, struct clcd_regs *regs) break; case 16: /* - * PL110 cannot choose between 5551 and 565 modes in - * its control register + * PL110 cannot choose between 5551 and 565 modes in its + * control register. It is possible to use 565 with + * custom external wiring. */ - if ((fb->dev->periphid & 0x000fffff) == 0x00041110) + if (amba_part(fb->dev) == 0x110 || + var->green.length == 5) val |= CNTL_LCDBPP16; - else if (fb->fb.var.green.length == 5) - val |= CNTL_LCDBPP16; - else + else if (var->green.length == 6) val |= CNTL_LCDBPP16_565; + else + val |= CNTL_LCDBPP16_444; break; case 32: val |= CNTL_LCDBPP24; @@ -228,7 +276,7 @@ static inline void clcdfb_decode(struct clcd_fb *fb, struct clcd_regs *regs) } regs->cntl = val; - regs->pixclock = fb->fb.var.pixclock; + regs->pixclock = var->pixclock; } static inline int clcdfb_check(struct clcd_fb *fb, struct fb_var_screeninfo *var) diff --git a/include/linux/bootmem.h b/include/linux/bootmem.h index 499dfe982a0..b8613e806aa 100644 --- a/include/linux/bootmem.h +++ b/include/linux/bootmem.h @@ -19,10 +19,6 @@ extern unsigned long min_low_pfn; */ extern unsigned long max_pfn; -#ifdef CONFIG_CRASH_DUMP -extern unsigned long saved_max_pfn; -#endif - #ifndef CONFIG_NO_BOOTMEM /* * node_bootmem_map is a map pointer - the bits represent all physical diff --git a/include/linux/capability.h b/include/linux/capability.h index fb16a3699b9..16ee8b49a20 100644 --- a/include/linux/capability.h +++ b/include/linux/capability.h @@ -368,6 +368,15 @@ struct cpu_vfs_cap_data { #ifdef __KERNEL__ +struct dentry; +struct user_namespace; + +struct user_namespace *current_user_ns(void); + +extern const kernel_cap_t __cap_empty_set; +extern const kernel_cap_t __cap_full_set; +extern const kernel_cap_t __cap_init_eff_set; + /* * Internal kernel functions only */ @@ -530,40 +539,27 @@ static inline kernel_cap_t cap_raise_nfsd_set(const kernel_cap_t a, cap_intersect(permitted, __cap_nfsd_set)); } -extern const kernel_cap_t __cap_empty_set; -extern const kernel_cap_t __cap_full_set; -extern const kernel_cap_t __cap_init_eff_set; - -/** - * has_capability - Determine if a task has a superior capability available - * @t: The task in question - * @cap: The capability to be tested for - * - * Return true if the specified task has the given superior capability - * currently in effect, false if not. - * - * Note that this does not set PF_SUPERPRIV on the task. - */ -#define has_capability(t, cap) (security_real_capable((t), (cap)) == 0) +extern bool has_capability(struct task_struct *t, int cap); +extern bool has_ns_capability(struct task_struct *t, + struct user_namespace *ns, int cap); +extern bool has_capability_noaudit(struct task_struct *t, int cap); +extern bool capable(int cap); +extern bool ns_capable(struct user_namespace *ns, int cap); +extern bool task_ns_capable(struct task_struct *t, int cap); /** - * has_capability_noaudit - Determine if a task has a superior capability available (unaudited) - * @t: The task in question - * @cap: The capability to be tested for + * nsown_capable - Check superior capability to one's own user_ns + * @cap: The capability in question * - * Return true if the specified task has the given superior capability - * currently in effect, false if not, but don't write an audit message for the - * check. - * - * Note that this does not set PF_SUPERPRIV on the task. + * Return true if the current task has the given superior capability + * targeted at its own user namespace. */ -#define has_capability_noaudit(t, cap) \ - (security_real_capable_noaudit((t), (cap)) == 0) - -extern int capable(int cap); +static inline bool nsown_capable(int cap) +{ + return ns_capable(current_user_ns(), cap); +} /* audit system wants to get cap info from files as well */ -struct dentry; extern int get_vfs_caps_from_disk(const struct dentry *dentry, struct cpu_vfs_cap_data *cpu_caps); #endif /* __KERNEL__ */ diff --git a/include/linux/cred.h b/include/linux/cred.h index 4aaeab37644..9aeeb0ba200 100644 --- a/include/linux/cred.h +++ b/include/linux/cred.h @@ -354,9 +354,11 @@ static inline void put_cred(const struct cred *_cred) #define current_fsgid() (current_cred_xxx(fsgid)) #define current_cap() (current_cred_xxx(cap_effective)) #define current_user() (current_cred_xxx(user)) -#define current_user_ns() (current_cred_xxx(user)->user_ns) +#define _current_user_ns() (current_cred_xxx(user)->user_ns) #define current_security() (current_cred_xxx(security)) +extern struct user_namespace *current_user_ns(void); + #define current_uid_gid(_uid, _gid) \ do { \ const struct cred *__cred; \ diff --git a/include/linux/ext3_fs.h b/include/linux/ext3_fs.h index 6043c64c207..85c1d302c12 100644 --- a/include/linux/ext3_fs.h +++ b/include/linux/ext3_fs.h @@ -418,13 +418,13 @@ struct ext3_inode { #define EXT2_MOUNT_DATA_FLAGS EXT3_MOUNT_DATA_FLAGS #endif -#define ext3_set_bit ext2_set_bit +#define ext3_set_bit __test_and_set_bit_le #define ext3_set_bit_atomic ext2_set_bit_atomic -#define ext3_clear_bit ext2_clear_bit +#define ext3_clear_bit __test_and_clear_bit_le #define ext3_clear_bit_atomic ext2_clear_bit_atomic -#define ext3_test_bit ext2_test_bit -#define ext3_find_first_zero_bit ext2_find_first_zero_bit -#define ext3_find_next_zero_bit ext2_find_next_zero_bit +#define ext3_test_bit test_bit_le +#define ext3_find_first_zero_bit find_first_zero_bit_le +#define ext3_find_next_zero_bit find_next_zero_bit_le /* * Maximal mount counts between two filesystem checks diff --git a/include/linux/fs.h b/include/linux/fs.h index 12529e96635..4dda076c24a 100644 --- a/include/linux/fs.h +++ b/include/linux/fs.h @@ -1457,8 +1457,13 @@ enum { #define put_fs_excl() atomic_dec(¤t->fs_excl) #define has_fs_excl() atomic_read(¤t->fs_excl) -#define is_owner_or_cap(inode) \ - ((current_fsuid() == (inode)->i_uid) || capable(CAP_FOWNER)) +/* + * until VFS tracks user namespaces for inodes, just make all files + * belong to init_user_ns + */ +extern struct user_namespace init_user_ns; +#define inode_userns(inode) (&init_user_ns) +extern bool inode_owner_or_capable(const struct inode *inode); /* not quite ready to be deprecated, but... */ extern void lock_super(struct super_block *); diff --git a/include/linux/ipc_namespace.h b/include/linux/ipc_namespace.h index 51952989ad4..a6d1655f960 100644 --- a/include/linux/ipc_namespace.h +++ b/include/linux/ipc_namespace.h @@ -5,6 +5,7 @@ #include <linux/idr.h> #include <linux/rwsem.h> #include <linux/notifier.h> +#include <linux/nsproxy.h> /* * ipc namespace events @@ -15,6 +16,7 @@ #define IPCNS_CALLBACK_PRI 0 +struct user_namespace; struct ipc_ids { int in_use; @@ -56,6 +58,8 @@ struct ipc_namespace { unsigned int mq_msg_max; /* initialized to DFLT_MSGMAX */ unsigned int mq_msgsize_max; /* initialized to DFLT_MSGSIZEMAX */ + /* user_ns which owns the ipc ns */ + struct user_namespace *user_ns; }; extern struct ipc_namespace init_ipc_ns; @@ -90,7 +94,7 @@ static inline int mq_init_ns(struct ipc_namespace *ns) { return 0; } #if defined(CONFIG_IPC_NS) extern struct ipc_namespace *copy_ipcs(unsigned long flags, - struct ipc_namespace *ns); + struct task_struct *tsk); static inline struct ipc_namespace *get_ipc_ns(struct ipc_namespace *ns) { if (ns) @@ -101,12 +105,12 @@ static inline struct ipc_namespace *get_ipc_ns(struct ipc_namespace *ns) extern void put_ipc_ns(struct ipc_namespace *ns); #else static inline struct ipc_namespace *copy_ipcs(unsigned long flags, - struct ipc_namespace *ns) + struct task_struct *tsk) { if (flags & CLONE_NEWIPC) return ERR_PTR(-EINVAL); - return ns; + return tsk->nsproxy->ipc_ns; } static inline struct ipc_namespace *get_ipc_ns(struct ipc_namespace *ns) diff --git a/include/linux/memcontrol.h b/include/linux/memcontrol.h index 5bb7be2628c..5a5ce705583 100644 --- a/include/linux/memcontrol.h +++ b/include/linux/memcontrol.h @@ -151,6 +151,10 @@ u64 mem_cgroup_get_limit(struct mem_cgroup *mem); void mem_cgroup_split_huge_fixup(struct page *head, struct page *tail); #endif +#ifdef CONFIG_DEBUG_VM +bool mem_cgroup_bad_page_check(struct page *page); +void mem_cgroup_print_bad_page(struct page *page); +#endif #else /* CONFIG_CGROUP_MEM_RES_CTLR */ struct mem_cgroup; @@ -352,5 +356,18 @@ static inline void mem_cgroup_split_huge_fixup(struct page *head, #endif /* CONFIG_CGROUP_MEM_CONT */ +#if !defined(CONFIG_CGROUP_MEM_RES_CTLR) || !defined(CONFIG_DEBUG_VM) +static inline bool +mem_cgroup_bad_page_check(struct page *page) +{ + return false; +} + +static inline void +mem_cgroup_print_bad_page(struct page *page) +{ +} +#endif + #endif /* _LINUX_MEMCONTROL_H */ diff --git a/include/linux/mm.h b/include/linux/mm.h index 294104e0891..f9535b2c955 100644 --- a/include/linux/mm.h +++ b/include/linux/mm.h @@ -982,6 +982,8 @@ static inline int handle_mm_fault(struct mm_struct *mm, extern int make_pages_present(unsigned long addr, unsigned long end); extern int access_process_vm(struct task_struct *tsk, unsigned long addr, void *buf, int len, int write); +extern int access_remote_vm(struct mm_struct *mm, unsigned long addr, + void *buf, int len, int write); int __get_user_pages(struct task_struct *tsk, struct mm_struct *mm, unsigned long start, int len, unsigned int foll_flags, @@ -1592,13 +1594,13 @@ static inline bool kernel_page_present(struct page *page) { return true; } #endif /* CONFIG_HIBERNATION */ #endif -extern struct vm_area_struct *get_gate_vma(struct task_struct *tsk); +extern struct vm_area_struct *get_gate_vma(struct mm_struct *mm); #ifdef __HAVE_ARCH_GATE_AREA -int in_gate_area_no_task(unsigned long addr); -int in_gate_area(struct task_struct *task, unsigned long addr); +int in_gate_area_no_mm(unsigned long addr); +int in_gate_area(struct mm_struct *mm, unsigned long addr); #else -int in_gate_area_no_task(unsigned long addr); -#define in_gate_area(task, addr) ({(void)task; in_gate_area_no_task(addr);}) +int in_gate_area_no_mm(unsigned long addr); +#define in_gate_area(mm, addr) ({(void)mm; in_gate_area_no_mm(addr);}) #endif /* __HAVE_ARCH_GATE_AREA */ int drop_caches_sysctl_handler(struct ctl_table *, int, diff --git a/include/linux/page_cgroup.h b/include/linux/page_cgroup.h index 6d6cb7a57bb..f5de21de31d 100644 --- a/include/linux/page_cgroup.h +++ b/include/linux/page_cgroup.h @@ -1,8 +1,26 @@ #ifndef __LINUX_PAGE_CGROUP_H #define __LINUX_PAGE_CGROUP_H +enum { + /* flags for mem_cgroup */ + PCG_LOCK, /* Lock for pc->mem_cgroup and following bits. */ + PCG_CACHE, /* charged as cache */ + PCG_USED, /* this object is in use. */ + PCG_MIGRATION, /* under page migration */ + /* flags for mem_cgroup and file and I/O status */ + PCG_MOVE_LOCK, /* For race between move_account v.s. following bits */ + PCG_FILE_MAPPED, /* page is accounted as "mapped" */ + /* No lock in page_cgroup */ + PCG_ACCT_LRU, /* page has been accounted for (under lru_lock) */ + __NR_PCG_FLAGS, +}; + +#ifndef __GENERATING_BOUNDS_H +#include <generated/bounds.h> + #ifdef CONFIG_CGROUP_MEM_RES_CTLR #include <linux/bit_spinlock.h> + /* * Page Cgroup can be considered as an extended mem_map. * A page_cgroup page is associated with every page descriptor. The @@ -13,7 +31,6 @@ struct page_cgroup { unsigned long flags; struct mem_cgroup *mem_cgroup; - struct page *page; struct list_head lru; /* per cgroup LRU list */ }; @@ -32,19 +49,7 @@ static inline void __init page_cgroup_init(void) #endif struct page_cgroup *lookup_page_cgroup(struct page *page); - -enum { - /* flags for mem_cgroup */ - PCG_LOCK, /* Lock for pc->mem_cgroup and following bits. */ - PCG_CACHE, /* charged as cache */ - PCG_USED, /* this object is in use. */ - PCG_MIGRATION, /* under page migration */ - /* flags for mem_cgroup and file and I/O status */ - PCG_MOVE_LOCK, /* For race between move_account v.s. following bits */ - PCG_FILE_MAPPED, /* page is accounted as "mapped" */ - /* No lock in page_cgroup */ - PCG_ACCT_LRU, /* page has been accounted for (under lru_lock) */ -}; +struct page *lookup_cgroup_page(struct page_cgroup *pc); #define TESTPCGFLAG(uname, lname) \ static inline int PageCgroup##uname(struct page_cgroup *pc) \ @@ -85,16 +90,6 @@ SETPCGFLAG(Migration, MIGRATION) CLEARPCGFLAG(Migration, MIGRATION) TESTPCGFLAG(Migration, MIGRATION) -static inline int page_cgroup_nid(struct page_cgroup *pc) -{ - return page_to_nid(pc->page); -} - -static inline enum zone_type page_cgroup_zid(struct page_cgroup *pc) -{ - return page_zonenum(pc->page); -} - static inline void lock_page_cgroup(struct page_cgroup *pc) { /* @@ -109,11 +104,6 @@ static inline void unlock_page_cgroup(struct page_cgroup *pc) bit_spin_unlock(PCG_LOCK, &pc->flags); } -static inline int page_is_cgroup_locked(struct page_cgroup *pc) -{ - return bit_spin_is_locked(PCG_LOCK, &pc->flags); -} - static inline void move_lock_page_cgroup(struct page_cgroup *pc, unsigned long *flags) { @@ -132,6 +122,39 @@ static inline void move_unlock_page_cgroup(struct page_cgroup *pc, local_irq_restore(*flags); } +#ifdef CONFIG_SPARSEMEM +#define PCG_ARRAYID_WIDTH SECTIONS_SHIFT +#else +#define PCG_ARRAYID_WIDTH NODES_SHIFT +#endif + +#if (PCG_ARRAYID_WIDTH > BITS_PER_LONG - NR_PCG_FLAGS) +#error Not enough space left in pc->flags to store page_cgroup array IDs +#endif + +/* pc->flags: ARRAY-ID | FLAGS */ + +#define PCG_ARRAYID_MASK ((1UL << PCG_ARRAYID_WIDTH) - 1) + +#define PCG_ARRAYID_OFFSET (BITS_PER_LONG - PCG_ARRAYID_WIDTH) +/* + * Zero the shift count for non-existant fields, to prevent compiler + * warnings and ensure references are optimized away. + */ +#define PCG_ARRAYID_SHIFT (PCG_ARRAYID_OFFSET * (PCG_ARRAYID_WIDTH != 0)) + +static inline void set_page_cgroup_array_id(struct page_cgroup *pc, + unsigned long id) +{ + pc->flags &= ~(PCG_ARRAYID_MASK << PCG_ARRAYID_SHIFT); + pc->flags |= (id & PCG_ARRAYID_MASK) << PCG_ARRAYID_SHIFT; +} + +static inline unsigned long page_cgroup_array_id(struct page_cgroup *pc) +{ + return (pc->flags >> PCG_ARRAYID_SHIFT) & PCG_ARRAYID_MASK; +} + #else /* CONFIG_CGROUP_MEM_RES_CTLR */ struct page_cgroup; @@ -152,7 +175,7 @@ static inline void __init page_cgroup_init_flatmem(void) { } -#endif +#endif /* CONFIG_CGROUP_MEM_RES_CTLR */ #include <linux/swap.h> @@ -188,5 |