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-rw-r--r--include/asm-generic/Kbuild.asm7
-rw-r--r--include/asm-generic/cmpxchg-local.h65
-rw-r--r--include/asm-generic/cmpxchg.h22
-rw-r--r--include/asm-generic/cputime.h1
-rw-r--r--include/asm-generic/iomap.h32
-rw-r--r--include/asm-generic/mutex-dec.h6
-rw-r--r--include/asm-generic/mutex-xchg.h6
-rw-r--r--include/asm-generic/sections.h2
-rw-r--r--include/asm-generic/termios.h6
9 files changed, 118 insertions, 29 deletions
diff --git a/include/asm-generic/Kbuild.asm b/include/asm-generic/Kbuild.asm
index 8fd81713cfc0..fd9dcfd91c39 100644
--- a/include/asm-generic/Kbuild.asm
+++ b/include/asm-generic/Kbuild.asm
@@ -1,4 +1,6 @@
+ifeq ($(wildcard include/asm-$(SRCARCH)/a.out.h),include/asm-$(SRCARCH)/a.out.h)
unifdef-y += a.out.h
+endif
unifdef-y += auxvec.h
unifdef-y += byteorder.h
unifdef-y += errno.h
@@ -27,8 +29,3 @@ unifdef-y += termbits.h
unifdef-y += termios.h
unifdef-y += types.h
unifdef-y += unistd.h
-unifdef-y += user.h
-
-# These probably shouldn't be exported
-unifdef-y += elf.h
-unifdef-y += page.h
diff --git a/include/asm-generic/cmpxchg-local.h b/include/asm-generic/cmpxchg-local.h
new file mode 100644
index 000000000000..b2ba2fc8829a
--- /dev/null
+++ b/include/asm-generic/cmpxchg-local.h
@@ -0,0 +1,65 @@
+#ifndef __ASM_GENERIC_CMPXCHG_LOCAL_H
+#define __ASM_GENERIC_CMPXCHG_LOCAL_H
+
+#include <linux/types.h>
+
+extern unsigned long wrong_size_cmpxchg(volatile void *ptr);
+
+/*
+ * Generic version of __cmpxchg_local (disables interrupts). Takes an unsigned
+ * long parameter, supporting various types of architectures.
+ */
+static inline unsigned long __cmpxchg_local_generic(volatile void *ptr,
+ unsigned long old, unsigned long new, int size)
+{
+ unsigned long flags, prev;
+
+ /*
+ * Sanity checking, compile-time.
+ */
+ if (size == 8 && sizeof(unsigned long) != 8)
+ wrong_size_cmpxchg(ptr);
+
+ local_irq_save(flags);
+ switch (size) {
+ case 1: prev = *(u8 *)ptr;
+ if (prev == old)
+ *(u8 *)ptr = (u8)new;
+ break;
+ case 2: prev = *(u16 *)ptr;
+ if (prev == old)
+ *(u16 *)ptr = (u16)new;
+ break;
+ case 4: prev = *(u32 *)ptr;
+ if (prev == old)
+ *(u32 *)ptr = (u32)new;
+ break;
+ case 8: prev = *(u64 *)ptr;
+ if (prev == old)
+ *(u64 *)ptr = (u64)new;
+ break;
+ default:
+ wrong_size_cmpxchg(ptr);
+ }
+ local_irq_restore(flags);
+ return prev;
+}
+
+/*
+ * Generic version of __cmpxchg64_local. Takes an u64 parameter.
+ */
+static inline u64 __cmpxchg64_local_generic(volatile void *ptr,
+ u64 old, u64 new)
+{
+ u64 prev;
+ unsigned long flags;
+
+ local_irq_save(flags);
+ prev = *(u64 *)ptr;
+ if (prev == old)
+ *(u64 *)ptr = new;
+ local_irq_restore(flags);
+ return prev;
+}
+
+#endif
diff --git a/include/asm-generic/cmpxchg.h b/include/asm-generic/cmpxchg.h
new file mode 100644
index 000000000000..213ac6e8fe39
--- /dev/null
+++ b/include/asm-generic/cmpxchg.h
@@ -0,0 +1,22 @@
+#ifndef __ASM_GENERIC_CMPXCHG_H
+#define __ASM_GENERIC_CMPXCHG_H
+
+/*
+ * Generic cmpxchg
+ *
+ * Uses the local cmpxchg. Does not support SMP.
+ */
+#ifdef CONFIG_SMP
+#error "Cannot use generic cmpxchg on SMP"
+#endif
+
+/*
+ * Atomic compare and exchange.
+ *
+ * Do not define __HAVE_ARCH_CMPXCHG because we want to use it to check whether
+ * a cmpxchg primitive faster than repeated local irq save/restore exists.
+ */
+#define cmpxchg(ptr, o, n) cmpxchg_local((ptr), (o), (n))
+#define cmpxchg64(ptr, o, n) cmpxchg64_local((ptr), (o), (n))
+
+#endif
diff --git a/include/asm-generic/cputime.h b/include/asm-generic/cputime.h
index 09204e40d663..1c1fa422d18a 100644
--- a/include/asm-generic/cputime.h
+++ b/include/asm-generic/cputime.h
@@ -18,6 +18,7 @@ typedef unsigned long cputime_t;
#define cputime_lt(__a, __b) ((__a) < (__b))
#define cputime_le(__a, __b) ((__a) <= (__b))
#define cputime_to_jiffies(__ct) (__ct)
+#define cputime_to_scaled(__ct) (__ct)
#define jiffies_to_cputime(__hz) (__hz)
typedef u64 cputime64_t;
diff --git a/include/asm-generic/iomap.h b/include/asm-generic/iomap.h
index cde592fca441..67dc84cd1343 100644
--- a/include/asm-generic/iomap.h
+++ b/include/asm-generic/iomap.h
@@ -25,17 +25,17 @@
* in the low address range. Architectures for which this is not
* true can't use this generic implementation.
*/
-extern unsigned int fastcall ioread8(void __iomem *);
-extern unsigned int fastcall ioread16(void __iomem *);
-extern unsigned int fastcall ioread16be(void __iomem *);
-extern unsigned int fastcall ioread32(void __iomem *);
-extern unsigned int fastcall ioread32be(void __iomem *);
+extern unsigned int ioread8(void __iomem *);
+extern unsigned int ioread16(void __iomem *);
+extern unsigned int ioread16be(void __iomem *);
+extern unsigned int ioread32(void __iomem *);
+extern unsigned int ioread32be(void __iomem *);
-extern void fastcall iowrite8(u8, void __iomem *);
-extern void fastcall iowrite16(u16, void __iomem *);
-extern void fastcall iowrite16be(u16, void __iomem *);
-extern void fastcall iowrite32(u32, void __iomem *);
-extern void fastcall iowrite32be(u32, void __iomem *);
+extern void iowrite8(u8, void __iomem *);
+extern void iowrite16(u16, void __iomem *);
+extern void iowrite16be(u16, void __iomem *);
+extern void iowrite32(u32, void __iomem *);
+extern void iowrite32be(u32, void __iomem *);
/*
* "string" versions of the above. Note that they
@@ -48,13 +48,13 @@ extern void fastcall iowrite32be(u32, void __iomem *);
* memory across multiple ports, use "memcpy_toio()"
* and friends.
*/
-extern void fastcall ioread8_rep(void __iomem *port, void *buf, unsigned long count);
-extern void fastcall ioread16_rep(void __iomem *port, void *buf, unsigned long count);
-extern void fastcall ioread32_rep(void __iomem *port, void *buf, unsigned long count);
+extern void ioread8_rep(void __iomem *port, void *buf, unsigned long count);
+extern void ioread16_rep(void __iomem *port, void *buf, unsigned long count);
+extern void ioread32_rep(void __iomem *port, void *buf, unsigned long count);
-extern void fastcall iowrite8_rep(void __iomem *port, const void *buf, unsigned long count);
-extern void fastcall iowrite16_rep(void __iomem *port, const void *buf, unsigned long count);
-extern void fastcall iowrite32_rep(void __iomem *port, const void *buf, unsigned long count);
+extern void iowrite8_rep(void __iomem *port, const void *buf, unsigned long count);
+extern void iowrite16_rep(void __iomem *port, const void *buf, unsigned long count);
+extern void iowrite32_rep(void __iomem *port, const void *buf, unsigned long count);
/* Create a virtual mapping cookie for an IO port range */
extern void __iomem *ioport_map(unsigned long port, unsigned int nr);
diff --git a/include/asm-generic/mutex-dec.h b/include/asm-generic/mutex-dec.h
index 0134151656af..ed108be6743f 100644
--- a/include/asm-generic/mutex-dec.h
+++ b/include/asm-generic/mutex-dec.h
@@ -18,7 +18,7 @@
* 1 even when the "1" assertion wasn't true.
*/
static inline void
-__mutex_fastpath_lock(atomic_t *count, fastcall void (*fail_fn)(atomic_t *))
+__mutex_fastpath_lock(atomic_t *count, void (*fail_fn)(atomic_t *))
{
if (unlikely(atomic_dec_return(count) < 0))
fail_fn(count);
@@ -37,7 +37,7 @@ __mutex_fastpath_lock(atomic_t *count, fastcall void (*fail_fn)(atomic_t *))
* or anything the slow path function returns.
*/
static inline int
-__mutex_fastpath_lock_retval(atomic_t *count, fastcall int (*fail_fn)(atomic_t *))
+__mutex_fastpath_lock_retval(atomic_t *count, int (*fail_fn)(atomic_t *))
{
if (unlikely(atomic_dec_return(count) < 0))
return fail_fn(count);
@@ -61,7 +61,7 @@ __mutex_fastpath_lock_retval(atomic_t *count, fastcall int (*fail_fn)(atomic_t *
* to return 0 otherwise.
*/
static inline void
-__mutex_fastpath_unlock(atomic_t *count, fastcall void (*fail_fn)(atomic_t *))
+__mutex_fastpath_unlock(atomic_t *count, void (*fail_fn)(atomic_t *))
{
smp_mb();
if (unlikely(atomic_inc_return(count) <= 0))
diff --git a/include/asm-generic/mutex-xchg.h b/include/asm-generic/mutex-xchg.h
index 6a7e8c141b53..7b9cd2cbfebe 100644
--- a/include/asm-generic/mutex-xchg.h
+++ b/include/asm-generic/mutex-xchg.h
@@ -23,7 +23,7 @@
* even when the "1" assertion wasn't true.
*/
static inline void
-__mutex_fastpath_lock(atomic_t *count, fastcall void (*fail_fn)(atomic_t *))
+__mutex_fastpath_lock(atomic_t *count, void (*fail_fn)(atomic_t *))
{
if (unlikely(atomic_xchg(count, 0) != 1))
fail_fn(count);
@@ -42,7 +42,7 @@ __mutex_fastpath_lock(atomic_t *count, fastcall void (*fail_fn)(atomic_t *))
* or anything the slow path function returns
*/
static inline int
-__mutex_fastpath_lock_retval(atomic_t *count, fastcall int (*fail_fn)(atomic_t *))
+__mutex_fastpath_lock_retval(atomic_t *count, int (*fail_fn)(atomic_t *))
{
if (unlikely(atomic_xchg(count, 0) != 1))
return fail_fn(count);
@@ -65,7 +65,7 @@ __mutex_fastpath_lock_retval(atomic_t *count, fastcall int (*fail_fn)(atomic_t *
* to return 0 otherwise.
*/
static inline void
-__mutex_fastpath_unlock(atomic_t *count, fastcall void (*fail_fn)(atomic_t *))
+__mutex_fastpath_unlock(atomic_t *count, void (*fail_fn)(atomic_t *))
{
smp_mb();
if (unlikely(atomic_xchg(count, 1) != 0))
diff --git a/include/asm-generic/sections.h b/include/asm-generic/sections.h
index 962cad7cfbbd..8feeae1f2369 100644
--- a/include/asm-generic/sections.h
+++ b/include/asm-generic/sections.h
@@ -8,8 +8,6 @@ extern char _data[], _sdata[], _edata[];
extern char __bss_start[], __bss_stop[];
extern char __init_begin[], __init_end[];
extern char _sinittext[], _einittext[];
-extern char _sextratext[] __attribute__((weak));
-extern char _eextratext[] __attribute__((weak));
extern char _end[];
extern char __per_cpu_start[], __per_cpu_end[];
extern char __kprobes_text_start[], __kprobes_text_end[];
diff --git a/include/asm-generic/termios.h b/include/asm-generic/termios.h
index 33dca30a3c45..7d39ecc92d94 100644
--- a/include/asm-generic/termios.h
+++ b/include/asm-generic/termios.h
@@ -61,8 +61,14 @@ static inline int kernel_termios_to_user_termio(struct termio __user *termio,
return 0;
}
+#ifndef user_termios_to_kernel_termios
#define user_termios_to_kernel_termios(k, u) copy_from_user(k, u, sizeof(struct termios))
+#endif
+
+#ifndef kernel_termios_to_user_termios
#define kernel_termios_to_user_termios(u, k) copy_to_user(u, k, sizeof(struct termios))
+#endif
+
#define user_termios_to_kernel_termios_1(k, u) copy_from_user(k, u, sizeof(struct termios))
#define kernel_termios_to_user_termios_1(u, k) copy_to_user(u, k, sizeof(struct termios))
generated by cgit (git 2.34.1) at 2025-06-04 06:22:30 +0000