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-rw-r--r--include/linux/capability.h23
-rw-r--r--include/linux/debug_locks.h7
-rw-r--r--include/linux/i2c.h2
-rw-r--r--include/linux/ide.h151
-rw-r--r--include/linux/percpu.h52
5 files changed, 136 insertions, 99 deletions
diff --git a/include/linux/capability.h b/include/linux/capability.h
index 4864a43b2b4..c3021105edc 100644
--- a/include/linux/capability.h
+++ b/include/linux/capability.h
@@ -377,7 +377,21 @@ struct cpu_vfs_cap_data {
#define CAP_FOR_EACH_U32(__capi) \
for (__capi = 0; __capi < _KERNEL_CAPABILITY_U32S; ++__capi)
+/*
+ * CAP_FS_MASK and CAP_NFSD_MASKS:
+ *
+ * The fs mask is all the privileges that fsuid==0 historically meant.
+ * At one time in the past, that included CAP_MKNOD and CAP_LINUX_IMMUTABLE.
+ *
+ * It has never meant setting security.* and trusted.* xattrs.
+ *
+ * We could also define fsmask as follows:
+ * 1. CAP_FS_MASK is the privilege to bypass all fs-related DAC permissions
+ * 2. The security.* and trusted.* xattrs are fs-related MAC permissions
+ */
+
# define CAP_FS_MASK_B0 (CAP_TO_MASK(CAP_CHOWN) \
+ | CAP_TO_MASK(CAP_MKNOD) \
| CAP_TO_MASK(CAP_DAC_OVERRIDE) \
| CAP_TO_MASK(CAP_DAC_READ_SEARCH) \
| CAP_TO_MASK(CAP_FOWNER) \
@@ -392,11 +406,12 @@ struct cpu_vfs_cap_data {
# define CAP_EMPTY_SET ((kernel_cap_t){{ 0, 0 }})
# define CAP_FULL_SET ((kernel_cap_t){{ ~0, ~0 }})
# define CAP_INIT_EFF_SET ((kernel_cap_t){{ ~CAP_TO_MASK(CAP_SETPCAP), ~0 }})
-# define CAP_FS_SET ((kernel_cap_t){{ CAP_FS_MASK_B0, CAP_FS_MASK_B1 } })
+# define CAP_FS_SET ((kernel_cap_t){{ CAP_FS_MASK_B0 \
+ | CAP_TO_MASK(CAP_LINUX_IMMUTABLE), \
+ CAP_FS_MASK_B1 } })
# define CAP_NFSD_SET ((kernel_cap_t){{ CAP_FS_MASK_B0 \
- | CAP_TO_MASK(CAP_SYS_RESOURCE) \
- | CAP_TO_MASK(CAP_MKNOD), \
- CAP_FS_MASK_B1 } })
+ | CAP_TO_MASK(CAP_SYS_RESOURCE), \
+ CAP_FS_MASK_B1 } })
#endif /* _KERNEL_CAPABILITY_U32S != 2 */
diff --git a/include/linux/debug_locks.h b/include/linux/debug_locks.h
index 096476f1fb3..493dedb7a67 100644
--- a/include/linux/debug_locks.h
+++ b/include/linux/debug_locks.h
@@ -2,12 +2,19 @@
#define __LINUX_DEBUG_LOCKING_H
#include <linux/kernel.h>
+#include <asm/atomic.h>
struct task_struct;
extern int debug_locks;
extern int debug_locks_silent;
+
+static inline int __debug_locks_off(void)
+{
+ return xchg(&debug_locks, 0);
+}
+
/*
* Generic 'turn off all lock debugging' function:
*/
diff --git a/include/linux/i2c.h b/include/linux/i2c.h
index 00ee11eb909..ad258059603 100644
--- a/include/linux/i2c.h
+++ b/include/linux/i2c.h
@@ -274,7 +274,7 @@ struct i2c_board_info {
* are provided using conventional syntax.
*/
#define I2C_BOARD_INFO(dev_type, dev_addr) \
- .type = (dev_type), .addr = (dev_addr)
+ .type = dev_type, .addr = (dev_addr)
/* Add-on boards should register/unregister their devices; e.g. a board
diff --git a/include/linux/ide.h b/include/linux/ide.h
index a5d26f66ef7..ff65fffb078 100644
--- a/include/linux/ide.h
+++ b/include/linux/ide.h
@@ -240,65 +240,38 @@ typedef enum {
} ide_startstop_t;
enum {
+ IDE_VALID_ERROR = (1 << 1),
+ IDE_VALID_FEATURE = IDE_VALID_ERROR,
+ IDE_VALID_NSECT = (1 << 2),
+ IDE_VALID_LBAL = (1 << 3),
+ IDE_VALID_LBAM = (1 << 4),
+ IDE_VALID_LBAH = (1 << 5),
+ IDE_VALID_DEVICE = (1 << 6),
+ IDE_VALID_LBA = IDE_VALID_LBAL |
+ IDE_VALID_LBAM |
+ IDE_VALID_LBAH,
+ IDE_VALID_OUT_TF = IDE_VALID_FEATURE |
+ IDE_VALID_NSECT |
+ IDE_VALID_LBA,
+ IDE_VALID_IN_TF = IDE_VALID_NSECT |
+ IDE_VALID_LBA,
+ IDE_VALID_OUT_HOB = IDE_VALID_OUT_TF,
+ IDE_VALID_IN_HOB = IDE_VALID_ERROR |
+ IDE_VALID_NSECT |
+ IDE_VALID_LBA,
+};
+
+enum {
IDE_TFLAG_LBA48 = (1 << 0),
- IDE_TFLAG_OUT_HOB_FEATURE = (1 << 1),
- IDE_TFLAG_OUT_HOB_NSECT = (1 << 2),
- IDE_TFLAG_OUT_HOB_LBAL = (1 << 3),
- IDE_TFLAG_OUT_HOB_LBAM = (1 << 4),
- IDE_TFLAG_OUT_HOB_LBAH = (1 << 5),
- IDE_TFLAG_OUT_HOB = IDE_TFLAG_OUT_HOB_FEATURE |
- IDE_TFLAG_OUT_HOB_NSECT |
- IDE_TFLAG_OUT_HOB_LBAL |
- IDE_TFLAG_OUT_HOB_LBAM |
- IDE_TFLAG_OUT_HOB_LBAH,
- IDE_TFLAG_OUT_FEATURE = (1 << 6),
- IDE_TFLAG_OUT_NSECT = (1 << 7),
- IDE_TFLAG_OUT_LBAL = (1 << 8),
- IDE_TFLAG_OUT_LBAM = (1 << 9),
- IDE_TFLAG_OUT_LBAH = (1 << 10),
- IDE_TFLAG_OUT_TF = IDE_TFLAG_OUT_FEATURE |
- IDE_TFLAG_OUT_NSECT |
- IDE_TFLAG_OUT_LBAL |
- IDE_TFLAG_OUT_LBAM |
- IDE_TFLAG_OUT_LBAH,
- IDE_TFLAG_OUT_DEVICE = (1 << 11),
- IDE_TFLAG_WRITE = (1 << 12),
- IDE_TFLAG_CUSTOM_HANDLER = (1 << 13),
- IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 14),
- IDE_TFLAG_IN_HOB_ERROR = (1 << 15),
- IDE_TFLAG_IN_HOB_NSECT = (1 << 16),
- IDE_TFLAG_IN_HOB_LBAL = (1 << 17),
- IDE_TFLAG_IN_HOB_LBAM = (1 << 18),
- IDE_TFLAG_IN_HOB_LBAH = (1 << 19),
- IDE_TFLAG_IN_HOB_LBA = IDE_TFLAG_IN_HOB_LBAL |
- IDE_TFLAG_IN_HOB_LBAM |
- IDE_TFLAG_IN_HOB_LBAH,
- IDE_TFLAG_IN_HOB = IDE_TFLAG_IN_HOB_ERROR |
- IDE_TFLAG_IN_HOB_NSECT |
- IDE_TFLAG_IN_HOB_LBA,
- IDE_TFLAG_IN_ERROR = (1 << 20),
- IDE_TFLAG_IN_NSECT = (1 << 21),
- IDE_TFLAG_IN_LBAL = (1 << 22),
- IDE_TFLAG_IN_LBAM = (1 << 23),
- IDE_TFLAG_IN_LBAH = (1 << 24),
- IDE_TFLAG_IN_LBA = IDE_TFLAG_IN_LBAL |
- IDE_TFLAG_IN_LBAM |
- IDE_TFLAG_IN_LBAH,
- IDE_TFLAG_IN_TF = IDE_TFLAG_IN_NSECT |
- IDE_TFLAG_IN_LBA,
- IDE_TFLAG_IN_DEVICE = (1 << 25),
- IDE_TFLAG_HOB = IDE_TFLAG_OUT_HOB |
- IDE_TFLAG_IN_HOB,
- IDE_TFLAG_TF = IDE_TFLAG_OUT_TF |
- IDE_TFLAG_IN_TF,
- IDE_TFLAG_DEVICE = IDE_TFLAG_OUT_DEVICE |
- IDE_TFLAG_IN_DEVICE,
+ IDE_TFLAG_WRITE = (1 << 1),
+ IDE_TFLAG_CUSTOM_HANDLER = (1 << 2),
+ IDE_TFLAG_DMA_PIO_FALLBACK = (1 << 3),
/* force 16-bit I/O operations */
- IDE_TFLAG_IO_16BIT = (1 << 26),
+ IDE_TFLAG_IO_16BIT = (1 << 4),
/* struct ide_cmd was allocated using kmalloc() */
- IDE_TFLAG_DYN = (1 << 27),
- IDE_TFLAG_FS = (1 << 28),
- IDE_TFLAG_MULTI_PIO = (1 << 29),
+ IDE_TFLAG_DYN = (1 << 5),
+ IDE_TFLAG_FS = (1 << 6),
+ IDE_TFLAG_MULTI_PIO = (1 << 7),
};
enum {
@@ -309,45 +282,34 @@ enum {
};
struct ide_taskfile {
- u8 hob_data; /* 0: high data byte (for TASKFILE IOCTL) */
- /* 1-5: additional data to support LBA48 */
- union {
- u8 hob_error; /* read: error */
- u8 hob_feature; /* write: feature */
- };
-
- u8 hob_nsect;
- u8 hob_lbal;
- u8 hob_lbam;
- u8 hob_lbah;
-
- u8 data; /* 6: low data byte (for TASKFILE IOCTL) */
-
- union { /*  7: */
- u8 error; /* read: error */
- u8 feature; /* write: feature */
+ u8 data; /* 0: data byte (for TASKFILE ioctl) */
+ union { /* 1: */
+ u8 error; /* read: error */
+ u8 feature; /* write: feature */
};
-
- u8 nsect; /* 8: number of sectors */
- u8 lbal; /* 9: LBA low */
- u8 lbam; /* 10: LBA mid */
- u8 lbah; /* 11: LBA high */
-
- u8 device; /* 12: device select */
-
- union { /* 13: */
- u8 status; /*  read: status  */
+ u8 nsect; /* 2: number of sectors */
+ u8 lbal; /* 3: LBA low */
+ u8 lbam; /* 4: LBA mid */
+ u8 lbah; /* 5: LBA high */
+ u8 device; /* 6: device select */
+ union { /* 7: */
+ u8 status; /* read: status */
u8 command; /* write: command */
};
};
struct ide_cmd {
- union {
- struct ide_taskfile tf;
- u8 tf_array[14];
- };
+ struct ide_taskfile tf;
+ struct ide_taskfile hob;
+ struct {
+ struct {
+ u8 tf;
+ u8 hob;
+ } out, in;
+ } valid;
+
+ u8 tf_flags;
u8 ftf_flags; /* for TASKFILE ioctl */
- u32 tf_flags;
int protocol;
int sg_nents; /* number of sg entries */
@@ -662,8 +624,8 @@ struct ide_tp_ops {
void (*write_devctl)(struct hwif_s *, u8);
void (*dev_select)(ide_drive_t *);
- void (*tf_load)(ide_drive_t *, struct ide_cmd *);
- void (*tf_read)(ide_drive_t *, struct ide_cmd *);
+ void (*tf_load)(ide_drive_t *, struct ide_taskfile *, u8);
+ void (*tf_read)(ide_drive_t *, struct ide_taskfile *, u8);
void (*input_data)(ide_drive_t *, struct ide_cmd *,
void *, unsigned int);
@@ -1162,7 +1124,8 @@ extern int ide_devset_execute(ide_drive_t *drive,
void ide_complete_cmd(ide_drive_t *, struct ide_cmd *, u8, u8);
int ide_complete_rq(ide_drive_t *, int, unsigned int);
-void ide_tf_dump(const char *, struct ide_taskfile *);
+void ide_tf_readback(ide_drive_t *drive, struct ide_cmd *cmd);
+void ide_tf_dump(const char *, struct ide_cmd *);
void ide_exec_command(ide_hwif_t *, u8);
u8 ide_read_status(ide_hwif_t *);
@@ -1170,8 +1133,8 @@ u8 ide_read_altstatus(ide_hwif_t *);
void ide_write_devctl(ide_hwif_t *, u8);
void ide_dev_select(ide_drive_t *);
-void ide_tf_load(ide_drive_t *, struct ide_cmd *);
-void ide_tf_read(ide_drive_t *, struct ide_cmd *);
+void ide_tf_load(ide_drive_t *, struct ide_taskfile *, u8);
+void ide_tf_read(ide_drive_t *, struct ide_taskfile *, u8);
void ide_input_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
void ide_output_data(ide_drive_t *, struct ide_cmd *, void *, unsigned int);
@@ -1529,7 +1492,7 @@ static inline void ide_set_hwifdata (ide_hwif_t * hwif, void *data)
extern void ide_toggle_bounce(ide_drive_t *drive, int on);
-u64 ide_get_lba_addr(struct ide_taskfile *, int);
+u64 ide_get_lba_addr(struct ide_cmd *, int);
u8 ide_dump_status(ide_drive_t *, const char *, u8);
struct ide_timing {
diff --git a/include/linux/percpu.h b/include/linux/percpu.h
index ee5615d6521..cfda2d5ad31 100644
--- a/include/linux/percpu.h
+++ b/include/linux/percpu.h
@@ -168,4 +168,56 @@ static inline void free_percpu(void *p)
#define alloc_percpu(type) (type *)__alloc_percpu(sizeof(type), \
__alignof__(type))
+/*
+ * Optional methods for optimized non-lvalue per-cpu variable access.
+ *
+ * @var can be a percpu variable or a field of it and its size should
+ * equal char, int or long. percpu_read() evaluates to a lvalue and
+ * all others to void.
+ *
+ * These operations are guaranteed to be atomic w.r.t. preemption.
+ * The generic versions use plain get/put_cpu_var(). Archs are
+ * encouraged to implement single-instruction alternatives which don't
+ * require preemption protection.
+ */
+#ifndef percpu_read
+# define percpu_read(var) \
+ ({ \
+ typeof(per_cpu_var(var)) __tmp_var__; \
+ __tmp_var__ = get_cpu_var(var); \
+ put_cpu_var(var); \
+ __tmp_var__; \
+ })
+#endif
+
+#define __percpu_generic_to_op(var, val, op) \
+do { \
+ get_cpu_var(var) op val; \
+ put_cpu_var(var); \
+} while (0)
+
+#ifndef percpu_write
+# define percpu_write(var, val) __percpu_generic_to_op(var, (val), =)
+#endif
+
+#ifndef percpu_add
+# define percpu_add(var, val) __percpu_generic_to_op(var, (val), +=)
+#endif
+
+#ifndef percpu_sub
+# define percpu_sub(var, val) __percpu_generic_to_op(var, (val), -=)
+#endif
+
+#ifndef percpu_and
+# define percpu_and(var, val) __percpu_generic_to_op(var, (val), &=)
+#endif
+
+#ifndef percpu_or
+# define percpu_or(var, val) __percpu_generic_to_op(var, (val), |=)
+#endif
+
+#ifndef percpu_xor
+# define percpu_xor(var, val) __percpu_generic_to_op(var, (val), ^=)
+#endif
+
#endif /* __LINUX_PERCPU_H */
generated by cgit v1.2.3 (git 2.25.1) at 2025-02-06 08:10:02 +0000