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-rw-r--r--arch/tile/include/arch/spr_def.h4
-rw-r--r--arch/tile/include/asm/atomic.h50
-rw-r--r--arch/tile/include/asm/atomic_32.h2
-rw-r--r--arch/tile/include/asm/bitops_64.h8
-rw-r--r--arch/tile/include/asm/cmpxchg.h73
-rw-r--r--arch/tile/include/asm/irq.h2
-rw-r--r--arch/tile/include/asm/spinlock_64.h2
-rw-r--r--arch/tile/include/asm/stack.h1
-rw-r--r--arch/tile/include/asm/traps.h6
9 files changed, 89 insertions, 59 deletions
diff --git a/arch/tile/include/arch/spr_def.h b/arch/tile/include/arch/spr_def.h
index f548efeb2de3..d6ba449b5363 100644
--- a/arch/tile/include/arch/spr_def.h
+++ b/arch/tile/include/arch/spr_def.h
@@ -60,8 +60,8 @@
_concat4(SPR_IPI_EVENT_, CONFIG_KERNEL_PL,,)
#define SPR_IPI_EVENT_RESET_K \
_concat4(SPR_IPI_EVENT_RESET_, CONFIG_KERNEL_PL,,)
-#define SPR_IPI_MASK_SET_K \
- _concat4(SPR_IPI_MASK_SET_, CONFIG_KERNEL_PL,,)
+#define SPR_IPI_EVENT_SET_K \
+ _concat4(SPR_IPI_EVENT_SET_, CONFIG_KERNEL_PL,,)
#define INT_IPI_K \
_concat4(INT_IPI_, CONFIG_KERNEL_PL,,)
diff --git a/arch/tile/include/asm/atomic.h b/arch/tile/include/asm/atomic.h
index bb696da5d7cd..f2461429a4a4 100644
--- a/arch/tile/include/asm/atomic.h
+++ b/arch/tile/include/asm/atomic.h
@@ -17,6 +17,8 @@
#ifndef _ASM_TILE_ATOMIC_H
#define _ASM_TILE_ATOMIC_H
+#include <asm/cmpxchg.h>
+
#ifndef __ASSEMBLY__
#include <linux/compiler.h>
@@ -121,54 +123,6 @@ static inline int atomic_read(const atomic_t *v)
*/
#define atomic_add_negative(i, v) (atomic_add_return((i), (v)) < 0)
-/* Nonexistent functions intended to cause link errors. */
-extern unsigned long __xchg_called_with_bad_pointer(void);
-extern unsigned long __cmpxchg_called_with_bad_pointer(void);
-
-#define xchg(ptr, x) \
- ({ \
- typeof(*(ptr)) __x; \
- switch (sizeof(*(ptr))) { \
- case 4: \
- __x = (typeof(__x))(typeof(__x-__x))atomic_xchg( \
- (atomic_t *)(ptr), \
- (u32)(typeof((x)-(x)))(x)); \
- break; \
- case 8: \
- __x = (typeof(__x))(typeof(__x-__x))atomic64_xchg( \
- (atomic64_t *)(ptr), \
- (u64)(typeof((x)-(x)))(x)); \
- break; \
- default: \
- __xchg_called_with_bad_pointer(); \
- } \
- __x; \
- })
-
-#define cmpxchg(ptr, o, n) \
- ({ \
- typeof(*(ptr)) __x; \
- switch (sizeof(*(ptr))) { \
- case 4: \
- __x = (typeof(__x))(typeof(__x-__x))atomic_cmpxchg( \
- (atomic_t *)(ptr), \
- (u32)(typeof((o)-(o)))(o), \
- (u32)(typeof((n)-(n)))(n)); \
- break; \
- case 8: \
- __x = (typeof(__x))(typeof(__x-__x))atomic64_cmpxchg( \
- (atomic64_t *)(ptr), \
- (u64)(typeof((o)-(o)))(o), \
- (u64)(typeof((n)-(n)))(n)); \
- break; \
- default: \
- __cmpxchg_called_with_bad_pointer(); \
- } \
- __x; \
- })
-
-#define tas(ptr) (xchg((ptr), 1))
-
#endif /* __ASSEMBLY__ */
#ifndef __tilegx__
diff --git a/arch/tile/include/asm/atomic_32.h b/arch/tile/include/asm/atomic_32.h
index 466dc4a39a4f..54d1da826f93 100644
--- a/arch/tile/include/asm/atomic_32.h
+++ b/arch/tile/include/asm/atomic_32.h
@@ -200,7 +200,7 @@ static inline u64 atomic64_add_return(u64 i, atomic64_t *v)
* @u: ...unless v is equal to u.
*
* Atomically adds @a to @v, so long as @v was not already @u.
- * Returns the old value of @v.
+ * Returns non-zero if @v was not @u, and zero otherwise.
*/
static inline u64 atomic64_add_unless(atomic64_t *v, u64 a, u64 u)
{
diff --git a/arch/tile/include/asm/bitops_64.h b/arch/tile/include/asm/bitops_64.h
index 58d021a9834f..60b87ee54fb8 100644
--- a/arch/tile/include/asm/bitops_64.h
+++ b/arch/tile/include/asm/bitops_64.h
@@ -38,10 +38,10 @@ static inline void clear_bit(unsigned nr, volatile unsigned long *addr)
static inline void change_bit(unsigned nr, volatile unsigned long *addr)
{
- unsigned long old, mask = (1UL << (nr % BITS_PER_LONG));
- long guess, oldval;
+ unsigned long mask = (1UL << (nr % BITS_PER_LONG));
+ unsigned long guess, oldval;
addr += nr / BITS_PER_LONG;
- old = *addr;
+ oldval = *addr;
do {
guess = oldval;
oldval = atomic64_cmpxchg((atomic64_t *)addr,
@@ -85,7 +85,7 @@ static inline int test_and_change_bit(unsigned nr,
volatile unsigned long *addr)
{
unsigned long mask = (1UL << (nr % BITS_PER_LONG));
- long guess, oldval = *addr;
+ unsigned long guess, oldval;
addr += nr / BITS_PER_LONG;
oldval = *addr;
do {
diff --git a/arch/tile/include/asm/cmpxchg.h b/arch/tile/include/asm/cmpxchg.h
new file mode 100644
index 000000000000..276f067e3640
--- /dev/null
+++ b/arch/tile/include/asm/cmpxchg.h
@@ -0,0 +1,73 @@
+/*
+ * cmpxchg.h -- forked from asm/atomic.h with this copyright:
+ *
+ * Copyright 2010 Tilera Corporation. All Rights Reserved.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation, version 2.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE, GOOD TITLE or
+ * NON INFRINGEMENT. See the GNU General Public License for
+ * more details.
+ *
+ */
+
+#ifndef _ASM_TILE_CMPXCHG_H
+#define _ASM_TILE_CMPXCHG_H
+
+#ifndef __ASSEMBLY__
+
+/* Nonexistent functions intended to cause link errors. */
+extern unsigned long __xchg_called_with_bad_pointer(void);
+extern unsigned long __cmpxchg_called_with_bad_pointer(void);
+
+#define xchg(ptr, x) \
+ ({ \
+ typeof(*(ptr)) __x; \
+ switch (sizeof(*(ptr))) { \
+ case 4: \
+ __x = (typeof(__x))(typeof(__x-__x))atomic_xchg( \
+ (atomic_t *)(ptr), \
+ (u32)(typeof((x)-(x)))(x)); \
+ break; \
+ case 8: \
+ __x = (typeof(__x))(typeof(__x-__x))atomic64_xchg( \
+ (atomic64_t *)(ptr), \
+ (u64)(typeof((x)-(x)))(x)); \
+ break; \
+ default: \
+ __xchg_called_with_bad_pointer(); \
+ } \
+ __x; \
+ })
+
+#define cmpxchg(ptr, o, n) \
+ ({ \
+ typeof(*(ptr)) __x; \
+ switch (sizeof(*(ptr))) { \
+ case 4: \
+ __x = (typeof(__x))(typeof(__x-__x))atomic_cmpxchg( \
+ (atomic_t *)(ptr), \
+ (u32)(typeof((o)-(o)))(o), \
+ (u32)(typeof((n)-(n)))(n)); \
+ break; \
+ case 8: \
+ __x = (typeof(__x))(typeof(__x-__x))atomic64_cmpxchg( \
+ (atomic64_t *)(ptr), \
+ (u64)(typeof((o)-(o)))(o), \
+ (u64)(typeof((n)-(n)))(n)); \
+ break; \
+ default: \
+ __cmpxchg_called_with_bad_pointer(); \
+ } \
+ __x; \
+ })
+
+#define tas(ptr) (xchg((ptr), 1))
+
+#endif /* __ASSEMBLY__ */
+
+#endif /* _ASM_TILE_CMPXCHG_H */
diff --git a/arch/tile/include/asm/irq.h b/arch/tile/include/asm/irq.h
index f80f8ceabc67..33cff9a3058b 100644
--- a/arch/tile/include/asm/irq.h
+++ b/arch/tile/include/asm/irq.h
@@ -21,7 +21,7 @@
#define NR_IRQS 32
/* IRQ numbers used for linux IPIs. */
-#define IRQ_RESCHEDULE 1
+#define IRQ_RESCHEDULE 0
#define irq_canonicalize(irq) (irq)
diff --git a/arch/tile/include/asm/spinlock_64.h b/arch/tile/include/asm/spinlock_64.h
index 72be5904e020..5f8b6a095fd8 100644
--- a/arch/tile/include/asm/spinlock_64.h
+++ b/arch/tile/include/asm/spinlock_64.h
@@ -137,7 +137,7 @@ static inline void arch_read_unlock(arch_rwlock_t *rw)
static inline void arch_write_unlock(arch_rwlock_t *rw)
{
__insn_mf();
- rw->lock = 0;
+ __insn_exch4(&rw->lock, 0); /* Avoid waiting in the write buffer. */
}
static inline int arch_read_trylock(arch_rwlock_t *rw)
diff --git a/arch/tile/include/asm/stack.h b/arch/tile/include/asm/stack.h
index 4d97a2db932e..0e9d382a2d45 100644
--- a/arch/tile/include/asm/stack.h
+++ b/arch/tile/include/asm/stack.h
@@ -25,7 +25,6 @@
struct KBacktraceIterator {
BacktraceIterator it;
struct task_struct *task; /* task we are backtracing */
- pte_t *pgtable; /* page table for user space access */
int end; /* iteration complete. */
int new_context; /* new context is starting */
int profile; /* profiling, so stop on async intrpt */
diff --git a/arch/tile/include/asm/traps.h b/arch/tile/include/asm/traps.h
index 5f20f920f932..e28c3df4176a 100644
--- a/arch/tile/include/asm/traps.h
+++ b/arch/tile/include/asm/traps.h
@@ -64,7 +64,11 @@ void do_breakpoint(struct pt_regs *, int fault_num);
#ifdef __tilegx__
+/* kernel/single_step.c */
void gx_singlestep_handle(struct pt_regs *, int fault_num);
+
+/* kernel/intvec_64.S */
+void fill_ra_stack(void);
#endif
-#endif /* _ASM_TILE_SYSCALLS_H */
+#endif /* _ASM_TILE_TRAPS_H */
generated by cgit v1.2.3 (git 2.39.1) at 2024-08-19 20:48:12 +0000