percpu: Remove irqsafe_cpu_xxx variants
We simply say that regular this_cpu use must be safe regardless of
preemption and interrupt state. That has no material change for x86
and s390 implementations of this_cpu operations. However, arches that
do not provide their own implementation for this_cpu operations will
now get code generated that disables interrupts instead of preemption.
-tj: This is part of on-going percpu API cleanup. For detailed
discussion of the subject, please refer to the following thread.
http://thread.gmane.org/gmane.linux.kernel/1222078
Signed-off-by: Christoph Lameter <cl@linux.com>
Signed-off-by: Tejun Heo <tj@kernel.org>
LKML-Reference: <alpine.DEB.2.00.1112221154380.11787@router.home>
diff --git a/arch/s390/include/asm/percpu.h b/arch/s390/include/asm/percpu.h
index 5325c89..0fbd189 100644
--- a/arch/s390/include/asm/percpu.h
+++ b/arch/s390/include/asm/percpu.h
@@ -19,7 +19,7 @@
#define ARCH_NEEDS_WEAK_PER_CPU
#endif
-#define arch_irqsafe_cpu_to_op(pcp, val, op) \
+#define arch_this_cpu_to_op(pcp, val, op) \
do { \
typedef typeof(pcp) pcp_op_T__; \
pcp_op_T__ old__, new__, prev__; \
@@ -41,27 +41,27 @@
preempt_enable(); \
} while (0)
-#define irqsafe_cpu_add_1(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, +)
-#define irqsafe_cpu_add_2(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, +)
-#define irqsafe_cpu_add_4(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, +)
-#define irqsafe_cpu_add_8(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, +)
+#define this_cpu_add_1(pcp, val) arch_this_cpu_to_op(pcp, val, +)
+#define this_cpu_add_2(pcp, val) arch_this_cpu_to_op(pcp, val, +)
+#define this_cpu_add_4(pcp, val) arch_this_cpu_to_op(pcp, val, +)
+#define this_cpu_add_8(pcp, val) arch_this_cpu_to_op(pcp, val, +)
-#define irqsafe_cpu_and_1(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, &)
-#define irqsafe_cpu_and_2(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, &)
-#define irqsafe_cpu_and_4(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, &)
-#define irqsafe_cpu_and_8(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, &)
+#define this_cpu_and_1(pcp, val) arch_this_cpu_to_op(pcp, val, &)
+#define this_cpu_and_2(pcp, val) arch_this_cpu_to_op(pcp, val, &)
+#define this_cpu_and_4(pcp, val) arch_this_cpu_to_op(pcp, val, &)
+#define this_cpu_and_8(pcp, val) arch_this_cpu_to_op(pcp, val, &)
-#define irqsafe_cpu_or_1(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, |)
-#define irqsafe_cpu_or_2(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, |)
-#define irqsafe_cpu_or_4(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, |)
-#define irqsafe_cpu_or_8(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, |)
+#define this_cpu_or_1(pcp, val) arch_this_cpu_to_op(pcp, val, |)
+#define this_cpu_or_2(pcp, val) arch_this_cpu_to_op(pcp, val, |)
+#define this_cpu_or_4(pcp, val) arch_this_cpu_to_op(pcp, val, |)
+#define this_cpu_or_8(pcp, val) arch_this_cpu_to_op(pcp, val, |)
-#define irqsafe_cpu_xor_1(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, ^)
-#define irqsafe_cpu_xor_2(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, ^)
-#define irqsafe_cpu_xor_4(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, ^)
-#define irqsafe_cpu_xor_8(pcp, val) arch_irqsafe_cpu_to_op(pcp, val, ^)
+#define this_cpu_xor_1(pcp, val) arch_this_cpu_to_op(pcp, val, ^)
+#define this_cpu_xor_2(pcp, val) arch_this_cpu_to_op(pcp, val, ^)
+#define this_cpu_xor_4(pcp, val) arch_this_cpu_to_op(pcp, val, ^)
+#define this_cpu_xor_8(pcp, val) arch_this_cpu_to_op(pcp, val, ^)
-#define arch_irqsafe_cpu_cmpxchg(pcp, oval, nval) \
+#define arch_this_cpu_cmpxchg(pcp, oval, nval) \
({ \
typedef typeof(pcp) pcp_op_T__; \
pcp_op_T__ ret__; \
@@ -79,10 +79,10 @@
ret__; \
})
-#define irqsafe_cpu_cmpxchg_1(pcp, oval, nval) arch_irqsafe_cpu_cmpxchg(pcp, oval, nval)
-#define irqsafe_cpu_cmpxchg_2(pcp, oval, nval) arch_irqsafe_cpu_cmpxchg(pcp, oval, nval)
-#define irqsafe_cpu_cmpxchg_4(pcp, oval, nval) arch_irqsafe_cpu_cmpxchg(pcp, oval, nval)
-#define irqsafe_cpu_cmpxchg_8(pcp, oval, nval) arch_irqsafe_cpu_cmpxchg(pcp, oval, nval)
+#define this_cpu_cmpxchg_1(pcp, oval, nval) arch_this_cpu_cmpxchg(pcp, oval, nval)
+#define this_cpu_cmpxchg_2(pcp, oval, nval) arch_this_cpu_cmpxchg(pcp, oval, nval)
+#define this_cpu_cmpxchg_4(pcp, oval, nval) arch_this_cpu_cmpxchg(pcp, oval, nval)
+#define this_cpu_cmpxchg_8(pcp, oval, nval) arch_this_cpu_cmpxchg(pcp, oval, nval)
#include <asm-generic/percpu.h>
diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h
index 3470c9d..562ccb5 100644
--- a/arch/x86/include/asm/percpu.h
+++ b/arch/x86/include/asm/percpu.h
@@ -414,22 +414,6 @@
#define this_cpu_xchg_2(pcp, nval) percpu_xchg_op(pcp, nval)
#define this_cpu_xchg_4(pcp, nval) percpu_xchg_op(pcp, nval)
-#define irqsafe_cpu_add_1(pcp, val) percpu_add_op((pcp), val)
-#define irqsafe_cpu_add_2(pcp, val) percpu_add_op((pcp), val)
-#define irqsafe_cpu_add_4(pcp, val) percpu_add_op((pcp), val)
-#define irqsafe_cpu_and_1(pcp, val) percpu_to_op("and", (pcp), val)
-#define irqsafe_cpu_and_2(pcp, val) percpu_to_op("and", (pcp), val)
-#define irqsafe_cpu_and_4(pcp, val) percpu_to_op("and", (pcp), val)
-#define irqsafe_cpu_or_1(pcp, val) percpu_to_op("or", (pcp), val)
-#define irqsafe_cpu_or_2(pcp, val) percpu_to_op("or", (pcp), val)
-#define irqsafe_cpu_or_4(pcp, val) percpu_to_op("or", (pcp), val)
-#define irqsafe_cpu_xor_1(pcp, val) percpu_to_op("xor", (pcp), val)
-#define irqsafe_cpu_xor_2(pcp, val) percpu_to_op("xor", (pcp), val)
-#define irqsafe_cpu_xor_4(pcp, val) percpu_to_op("xor", (pcp), val)
-#define irqsafe_cpu_xchg_1(pcp, nval) percpu_xchg_op(pcp, nval)
-#define irqsafe_cpu_xchg_2(pcp, nval) percpu_xchg_op(pcp, nval)
-#define irqsafe_cpu_xchg_4(pcp, nval) percpu_xchg_op(pcp, nval)
-
#ifndef CONFIG_M386
#define __this_cpu_add_return_1(pcp, val) percpu_add_return_op(pcp, val)
#define __this_cpu_add_return_2(pcp, val) percpu_add_return_op(pcp, val)
@@ -445,9 +429,6 @@
#define this_cpu_cmpxchg_2(pcp, oval, nval) percpu_cmpxchg_op(pcp, oval, nval)
#define this_cpu_cmpxchg_4(pcp, oval, nval) percpu_cmpxchg_op(pcp, oval, nval)
-#define irqsafe_cpu_cmpxchg_1(pcp, oval, nval) percpu_cmpxchg_op(pcp, oval, nval)
-#define irqsafe_cpu_cmpxchg_2(pcp, oval, nval) percpu_cmpxchg_op(pcp, oval, nval)
-#define irqsafe_cpu_cmpxchg_4(pcp, oval, nval) percpu_cmpxchg_op(pcp, oval, nval)
#endif /* !CONFIG_M386 */
#ifdef CONFIG_X86_CMPXCHG64
@@ -467,7 +448,6 @@
#define __this_cpu_cmpxchg_double_4(pcp1, pcp2, o1, o2, n1, n2) percpu_cmpxchg8b_double(pcp1, o1, o2, n1, n2)
#define this_cpu_cmpxchg_double_4(pcp1, pcp2, o1, o2, n1, n2) percpu_cmpxchg8b_double(pcp1, o1, o2, n1, n2)
-#define irqsafe_cpu_cmpxchg_double_4(pcp1, pcp2, o1, o2, n1, n2) percpu_cmpxchg8b_double(pcp1, o1, o2, n1, n2)
#endif /* CONFIG_X86_CMPXCHG64 */
/*
@@ -495,13 +475,6 @@
#define this_cpu_xchg_8(pcp, nval) percpu_xchg_op(pcp, nval)
#define this_cpu_cmpxchg_8(pcp, oval, nval) percpu_cmpxchg_op(pcp, oval, nval)
-#define irqsafe_cpu_add_8(pcp, val) percpu_add_op((pcp), val)
-#define irqsafe_cpu_and_8(pcp, val) percpu_to_op("and", (pcp), val)
-#define irqsafe_cpu_or_8(pcp, val) percpu_to_op("or", (pcp), val)
-#define irqsafe_cpu_xor_8(pcp, val) percpu_to_op("xor", (pcp), val)
-#define irqsafe_cpu_xchg_8(pcp, nval) percpu_xchg_op(pcp, nval)
-#define irqsafe_cpu_cmpxchg_8(pcp, oval, nval) percpu_cmpxchg_op(pcp, oval, nval)
-
/*
* Pretty complex macro to generate cmpxchg16 instruction. The instruction
* is not supported on early AMD64 processors so we must be able to emulate
@@ -532,7 +505,6 @@
#define __this_cpu_cmpxchg_double_8(pcp1, pcp2, o1, o2, n1, n2) percpu_cmpxchg16b_double(pcp1, o1, o2, n1, n2)
#define this_cpu_cmpxchg_double_8(pcp1, pcp2, o1, o2, n1, n2) percpu_cmpxchg16b_double(pcp1, o1, o2, n1, n2)
-#define irqsafe_cpu_cmpxchg_double_8(pcp1, pcp2, o1, o2, n1, n2) percpu_cmpxchg16b_double(pcp1, o1, o2, n1, n2)
#endif
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index a82ad4d..ca8d9bc 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -2115,7 +2115,7 @@
*/
static inline void dev_put(struct net_device *dev)
{
- irqsafe_cpu_dec(*dev->pcpu_refcnt);
+ this_cpu_dec(*dev->pcpu_refcnt);
}
/**
@@ -2126,7 +2126,7 @@
*/
static inline void dev_hold(struct net_device *dev)
{
- irqsafe_cpu_inc(*dev->pcpu_refcnt);
+ this_cpu_inc(*dev->pcpu_refcnt);
}
/* Carrier loss detection, dial on demand. The functions netif_carrier_on
diff --git a/include/linux/netfilter/x_tables.h b/include/linux/netfilter/x_tables.h
index 32cddf7..8d674a7 100644
--- a/include/linux/netfilter/x_tables.h
+++ b/include/linux/netfilter/x_tables.h
@@ -471,7 +471,7 @@
*
* Begin packet processing : all readers must wait the end
* 1) Must be called with preemption disabled
- * 2) softirqs must be disabled too (or we should use irqsafe_cpu_add())
+ * 2) softirqs must be disabled too (or we should use this_cpu_add())
* Returns :
* 1 if no recursion on this cpu
* 0 if recursion detected
@@ -503,7 +503,7 @@
*
* End packet processing : all readers can proceed
* 1) Must be called with preemption disabled
- * 2) softirqs must be disabled too (or we should use irqsafe_cpu_add())
+ * 2) softirqs must be disabled too (or we should use this_cpu_add())
*/
static inline void xt_write_recseq_end(unsigned int addend)
{
diff --git a/include/linux/percpu.h b/include/linux/percpu.h
index 9ca008f..32cd1f6 100644
--- a/include/linux/percpu.h
+++ b/include/linux/percpu.h
@@ -172,10 +172,10 @@
* 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
+ * These operations are guaranteed to be atomic.
+ * The generic versions disable interrupts. Archs are
* encouraged to implement single-instruction alternatives which don't
- * require preemption protection.
+ * require protection.
*/
#ifndef percpu_read
# define percpu_read(var) \
@@ -347,9 +347,10 @@
#define _this_cpu_generic_to_op(pcp, val, op) \
do { \
- preempt_disable(); \
+ unsigned long flags; \
+ local_irq_save(flags); \
*__this_cpu_ptr(&(pcp)) op val; \
- preempt_enable(); \
+ local_irq_restore(flags); \
} while (0)
#ifndef this_cpu_write
@@ -447,10 +448,11 @@
#define _this_cpu_generic_add_return(pcp, val) \
({ \
typeof(pcp) ret__; \
- preempt_disable(); \
+ unsigned long flags; \
+ local_irq_save(flags); \
__this_cpu_add(pcp, val); \
ret__ = __this_cpu_read(pcp); \
- preempt_enable(); \
+ local_irq_restore(flags); \
ret__; \
})
@@ -476,10 +478,11 @@
#define _this_cpu_generic_xchg(pcp, nval) \
({ typeof(pcp) ret__; \
- preempt_disable(); \
+ unsigned long flags; \
+ local_irq_save(flags); \
ret__ = __this_cpu_read(pcp); \
__this_cpu_write(pcp, nval); \
- preempt_enable(); \
+ local_irq_restore(flags); \
ret__; \
})
@@ -501,12 +504,14 @@
#endif
#define _this_cpu_generic_cmpxchg(pcp, oval, nval) \
-({ typeof(pcp) ret__; \
- preempt_disable(); \
+({ \
+ typeof(pcp) ret__; \
+ unsigned long flags; \
+ local_irq_save(flags); \
ret__ = __this_cpu_read(pcp); \
if (ret__ == (oval)) \
__this_cpu_write(pcp, nval); \
- preempt_enable(); \
+ local_irq_restore(flags); \
ret__; \
})
@@ -538,10 +543,11 @@
#define _this_cpu_generic_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) \
({ \
int ret__; \
- preempt_disable(); \
+ unsigned long flags; \
+ local_irq_save(flags); \
ret__ = __this_cpu_generic_cmpxchg_double(pcp1, pcp2, \
oval1, oval2, nval1, nval2); \
- preempt_enable(); \
+ local_irq_restore(flags); \
ret__; \
})
@@ -567,9 +573,9 @@
#endif
/*
- * Generic percpu operations that do not require preemption handling.
+ * Generic percpu operations for context that are safe from preemption/interrupts.
* Either we do not care about races or the caller has the
- * responsibility of handling preemptions issues. Arch code can still
+ * responsibility of handling preemption/interrupt issues. Arch code can still
* override these instructions since the arch per cpu code may be more
* efficient and may actually get race freeness for free (that is the
* case for x86 for example).
@@ -802,156 +808,4 @@
__pcpu_double_call_return_bool(__this_cpu_cmpxchg_double_, (pcp1), (pcp2), (oval1), (oval2), (nval1), (nval2))
#endif
-/*
- * IRQ safe versions of the per cpu RMW operations. Note that these operations
- * are *not* safe against modification of the same variable from another
- * processors (which one gets when using regular atomic operations)
- * They are guaranteed to be atomic vs. local interrupts and
- * preemption only.
- */
-#define irqsafe_cpu_generic_to_op(pcp, val, op) \
-do { \
- unsigned long flags; \
- local_irq_save(flags); \
- *__this_cpu_ptr(&(pcp)) op val; \
- local_irq_restore(flags); \
-} while (0)
-
-#ifndef irqsafe_cpu_add
-# ifndef irqsafe_cpu_add_1
-# define irqsafe_cpu_add_1(pcp, val) irqsafe_cpu_generic_to_op((pcp), (val), +=)
-# endif
-# ifndef irqsafe_cpu_add_2
-# define irqsafe_cpu_add_2(pcp, val) irqsafe_cpu_generic_to_op((pcp), (val), +=)
-# endif
-# ifndef irqsafe_cpu_add_4
-# define irqsafe_cpu_add_4(pcp, val) irqsafe_cpu_generic_to_op((pcp), (val), +=)
-# endif
-# ifndef irqsafe_cpu_add_8
-# define irqsafe_cpu_add_8(pcp, val) irqsafe_cpu_generic_to_op((pcp), (val), +=)
-# endif
-# define irqsafe_cpu_add(pcp, val) __pcpu_size_call(irqsafe_cpu_add_, (pcp), (val))
-#endif
-
-#ifndef irqsafe_cpu_sub
-# define irqsafe_cpu_sub(pcp, val) irqsafe_cpu_add((pcp), -(val))
-#endif
-
-#ifndef irqsafe_cpu_inc
-# define irqsafe_cpu_inc(pcp) irqsafe_cpu_add((pcp), 1)
-#endif
-
-#ifndef irqsafe_cpu_dec
-# define irqsafe_cpu_dec(pcp) irqsafe_cpu_sub((pcp), 1)
-#endif
-
-#ifndef irqsafe_cpu_and
-# ifndef irqsafe_cpu_and_1
-# define irqsafe_cpu_and_1(pcp, val) irqsafe_cpu_generic_to_op((pcp), (val), &=)
-# endif
-# ifndef irqsafe_cpu_and_2
-# define irqsafe_cpu_and_2(pcp, val) irqsafe_cpu_generic_to_op((pcp), (val), &=)
-# endif
-# ifndef irqsafe_cpu_and_4
-# define irqsafe_cpu_and_4(pcp, val) irqsafe_cpu_generic_to_op((pcp), (val), &=)
-# endif
-# ifndef irqsafe_cpu_and_8
-# define irqsafe_cpu_and_8(pcp, val) irqsafe_cpu_generic_to_op((pcp), (val), &=)
-# endif
-# define irqsafe_cpu_and(pcp, val) __pcpu_size_call(irqsafe_cpu_and_, (val))
-#endif
-
-#ifndef irqsafe_cpu_or
-# ifndef irqsafe_cpu_or_1
-# define irqsafe_cpu_or_1(pcp, val) irqsafe_cpu_generic_to_op((pcp), (val), |=)
-# endif
-# ifndef irqsafe_cpu_or_2
-# define irqsafe_cpu_or_2(pcp, val) irqsafe_cpu_generic_to_op((pcp), (val), |=)
-# endif
-# ifndef irqsafe_cpu_or_4
-# define irqsafe_cpu_or_4(pcp, val) irqsafe_cpu_generic_to_op((pcp), (val), |=)
-# endif
-# ifndef irqsafe_cpu_or_8
-# define irqsafe_cpu_or_8(pcp, val) irqsafe_cpu_generic_to_op((pcp), (val), |=)
-# endif
-# define irqsafe_cpu_or(pcp, val) __pcpu_size_call(irqsafe_cpu_or_, (val))
-#endif
-
-#ifndef irqsafe_cpu_xor
-# ifndef irqsafe_cpu_xor_1
-# define irqsafe_cpu_xor_1(pcp, val) irqsafe_cpu_generic_to_op((pcp), (val), ^=)
-# endif
-# ifndef irqsafe_cpu_xor_2
-# define irqsafe_cpu_xor_2(pcp, val) irqsafe_cpu_generic_to_op((pcp), (val), ^=)
-# endif
-# ifndef irqsafe_cpu_xor_4
-# define irqsafe_cpu_xor_4(pcp, val) irqsafe_cpu_generic_to_op((pcp), (val), ^=)
-# endif
-# ifndef irqsafe_cpu_xor_8
-# define irqsafe_cpu_xor_8(pcp, val) irqsafe_cpu_generic_to_op((pcp), (val), ^=)
-# endif
-# define irqsafe_cpu_xor(pcp, val) __pcpu_size_call(irqsafe_cpu_xor_, (val))
-#endif
-
-#define irqsafe_cpu_generic_cmpxchg(pcp, oval, nval) \
-({ \
- typeof(pcp) ret__; \
- unsigned long flags; \
- local_irq_save(flags); \
- ret__ = __this_cpu_read(pcp); \
- if (ret__ == (oval)) \
- __this_cpu_write(pcp, nval); \
- local_irq_restore(flags); \
- ret__; \
-})
-
-#ifndef irqsafe_cpu_cmpxchg
-# ifndef irqsafe_cpu_cmpxchg_1
-# define irqsafe_cpu_cmpxchg_1(pcp, oval, nval) irqsafe_cpu_generic_cmpxchg(pcp, oval, nval)
-# endif
-# ifndef irqsafe_cpu_cmpxchg_2
-# define irqsafe_cpu_cmpxchg_2(pcp, oval, nval) irqsafe_cpu_generic_cmpxchg(pcp, oval, nval)
-# endif
-# ifndef irqsafe_cpu_cmpxchg_4
-# define irqsafe_cpu_cmpxchg_4(pcp, oval, nval) irqsafe_cpu_generic_cmpxchg(pcp, oval, nval)
-# endif
-# ifndef irqsafe_cpu_cmpxchg_8
-# define irqsafe_cpu_cmpxchg_8(pcp, oval, nval) irqsafe_cpu_generic_cmpxchg(pcp, oval, nval)
-# endif
-# define irqsafe_cpu_cmpxchg(pcp, oval, nval) \
- __pcpu_size_call_return2(irqsafe_cpu_cmpxchg_, (pcp), oval, nval)
-#endif
-
-#define irqsafe_generic_cpu_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) \
-({ \
- int ret__; \
- unsigned long flags; \
- local_irq_save(flags); \
- ret__ = __this_cpu_generic_cmpxchg_double(pcp1, pcp2, \
- oval1, oval2, nval1, nval2); \
- local_irq_restore(flags); \
- ret__; \
-})
-
-#ifndef irqsafe_cpu_cmpxchg_double
-# ifndef irqsafe_cpu_cmpxchg_double_1
-# define irqsafe_cpu_cmpxchg_double_1(pcp1, pcp2, oval1, oval2, nval1, nval2) \
- irqsafe_generic_cpu_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2)
-# endif
-# ifndef irqsafe_cpu_cmpxchg_double_2
-# define irqsafe_cpu_cmpxchg_double_2(pcp1, pcp2, oval1, oval2, nval1, nval2) \
- irqsafe_generic_cpu_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2)
-# endif
-# ifndef irqsafe_cpu_cmpxchg_double_4
-# define irqsafe_cpu_cmpxchg_double_4(pcp1, pcp2, oval1, oval2, nval1, nval2) \
- irqsafe_generic_cpu_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2)
-# endif
-# ifndef irqsafe_cpu_cmpxchg_double_8
-# define irqsafe_cpu_cmpxchg_double_8(pcp1, pcp2, oval1, oval2, nval1, nval2) \
- irqsafe_generic_cpu_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2)
-# endif
-# define irqsafe_cpu_cmpxchg_double(pcp1, pcp2, oval1, oval2, nval1, nval2) \
- __pcpu_double_call_return_bool(irqsafe_cpu_cmpxchg_double_, (pcp1), (pcp2), (oval1), (oval2), (nval1), (nval2))
-#endif
-
#endif /* __LINUX_PERCPU_H */
diff --git a/include/net/snmp.h b/include/net/snmp.h
index 8f0f9ac..e067aed 100644
--- a/include/net/snmp.h
+++ b/include/net/snmp.h
@@ -129,33 +129,33 @@
__this_cpu_inc(mib[0]->mibs[field])
#define SNMP_INC_STATS_USER(mib, field) \
- irqsafe_cpu_inc(mib[0]->mibs[field])
+ this_cpu_inc(mib[0]->mibs[field])
#define SNMP_INC_STATS_ATOMIC_LONG(mib, field) \
atomic_long_inc(&mib->mibs[field])
#define SNMP_INC_STATS(mib, field) \
- irqsafe_cpu_inc(mib[0]->mibs[field])
+ this_cpu_inc(mib[0]->mibs[field])
#define SNMP_DEC_STATS(mib, field) \
- irqsafe_cpu_dec(mib[0]->mibs[field])
+ this_cpu_dec(mib[0]->mibs[field])
#define SNMP_ADD_STATS_BH(mib, field, addend) \
__this_cpu_add(mib[0]->mibs[field], addend)
#define SNMP_ADD_STATS_USER(mib, field, addend) \
- irqsafe_cpu_add(mib[0]->mibs[field], addend)
+ this_cpu_add(mib[0]->mibs[field], addend)
#define SNMP_ADD_STATS(mib, field, addend) \
- irqsafe_cpu_add(mib[0]->mibs[field], addend)
+ this_cpu_add(mib[0]->mibs[field], addend)
/*
* Use "__typeof__(*mib[0]) *ptr" instead of "__typeof__(mib[0]) ptr"
* to make @ptr a non-percpu pointer.
*/
#define SNMP_UPD_PO_STATS(mib, basefield, addend) \
do { \
- irqsafe_cpu_inc(mib[0]->mibs[basefield##PKTS]); \
- irqsafe_cpu_add(mib[0]->mibs[basefield##OCTETS], addend); \
+ this_cpu_inc(mib[0]->mibs[basefield##PKTS]); \
+ this_cpu_add(mib[0]->mibs[basefield##OCTETS], addend); \
} while (0)
#define SNMP_UPD_PO_STATS_BH(mib, basefield, addend) \
do { \
diff --git a/mm/slub.c b/mm/slub.c
index ed3334d..0011489 100644
--- a/mm/slub.c
+++ b/mm/slub.c
@@ -1978,7 +1978,7 @@
page->pobjects = pobjects;
page->next = oldpage;
- } while (irqsafe_cpu_cmpxchg(s->cpu_slab->partial, oldpage, page) != oldpage);
+ } while (this_cpu_cmpxchg(s->cpu_slab->partial, oldpage, page) != oldpage);
stat(s, CPU_PARTIAL_FREE);
return pobjects;
}
@@ -2304,7 +2304,7 @@
* Since this is without lock semantics the protection is only against
* code executing on this cpu *not* from access by other cpus.
*/
- if (unlikely(!irqsafe_cpu_cmpxchg_double(
+ if (unlikely(!this_cpu_cmpxchg_double(
s->cpu_slab->freelist, s->cpu_slab->tid,
object, tid,
get_freepointer_safe(s, object), next_tid(tid)))) {
@@ -2534,7 +2534,7 @@
if (likely(page == c->page)) {
set_freepointer(s, object, c->freelist);
- if (unlikely(!irqsafe_cpu_cmpxchg_double(
+ if (unlikely(!this_cpu_cmpxchg_double(
s->cpu_slab->freelist, s->cpu_slab->tid,
c->freelist, tid,
object, next_tid(tid)))) {
diff --git a/net/caif/caif_dev.c b/net/caif/caif_dev.c
index f1fa1f6..64930cc 100644
--- a/net/caif/caif_dev.c
+++ b/net/caif/caif_dev.c
@@ -69,12 +69,12 @@
static void caifd_put(struct caif_device_entry *e)
{
- irqsafe_cpu_dec(*e->pcpu_refcnt);
+ this_cpu_dec(*e->pcpu_refcnt);
}
static void caifd_hold(struct caif_device_entry *e)
{
- irqsafe_cpu_inc(*e->pcpu_refcnt);
+ this_cpu_inc(*e->pcpu_refcnt);
}
static int caifd_refcnt_read(struct caif_device_entry *e)
diff --git a/net/caif/cffrml.c b/net/caif/cffrml.c
index d3ca87b..0a7df7e 100644
--- a/net/caif/cffrml.c
+++ b/net/caif/cffrml.c
@@ -177,14 +177,14 @@
{
struct cffrml *this = container_obj(layr);
if (layr != NULL && this->pcpu_refcnt != NULL)
- irqsafe_cpu_dec(*this->pcpu_refcnt);
+ this_cpu_dec(*this->pcpu_refcnt);
}
void cffrml_hold(struct cflayer *layr)
{
struct cffrml *this = container_obj(layr);
if (layr != NULL && this->pcpu_refcnt != NULL)
- irqsafe_cpu_inc(*this->pcpu_refcnt);
+ this_cpu_inc(*this->pcpu_refcnt);
}
int cffrml_refcnt_read(struct cflayer *layr)