Gitweb:     
http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3334052a321aca0ffecb54244d666311f98f5487
Commit:     3334052a321aca0ffecb54244d666311f98f5487
Parent:     072a1e6953d2caffbad7d217ae51cdc61125960f
Author:     [EMAIL PROTECTED] <[EMAIL PROTECTED]>
AuthorDate: Wed Jan 30 13:32:53 2008 +0100
Committer:  Ingo Molnar <[EMAIL PROTECTED]>
CommitDate: Wed Jan 30 13:32:53 2008 +0100

    x86: unify percpu.h
    
    Form a single percpu.h from percpu_32.h and percpu_64.h. Both are now pretty
    small so this is simply adding them together.
    
    Cc: Rusty Russell <[EMAIL PROTECTED]>
    Signed-off-by: Christoph Lameter <[EMAIL PROTECTED]>
    Signed-off-by: Mike Travis <[EMAIL PROTECTED]>
    Signed-off-by: Thomas Gleixner <[EMAIL PROTECTED]>
    Signed-off-by: Ingo Molnar <[EMAIL PROTECTED]>
---
 include/asm-x86/percpu.h    |  147 +++++++++++++++++++++++++++++++++++++++++--
 include/asm-x86/percpu_32.h |  128 -------------------------------------
 include/asm-x86/percpu_64.h |   32 ---------
 3 files changed, 142 insertions(+), 165 deletions(-)

diff --git a/include/asm-x86/percpu.h b/include/asm-x86/percpu.h
dissimilarity index 91%
index a1aaad2..0dec00f 100644
--- a/include/asm-x86/percpu.h
+++ b/include/asm-x86/percpu.h
@@ -1,5 +1,142 @@
-#ifdef CONFIG_X86_32
-# include "percpu_32.h"
-#else
-# include "percpu_64.h"
-#endif
+#ifndef _ASM_X86_PERCPU_H_
+#define _ASM_X86_PERCPU_H_
+
+#ifdef CONFIG_X86_64
+#include <linux/compiler.h>
+
+/* Same as asm-generic/percpu.h, except that we store the per cpu offset
+   in the PDA. Longer term the PDA and every per cpu variable
+   should be just put into a single section and referenced directly
+   from %gs */
+
+#ifdef CONFIG_SMP
+#include <asm/pda.h>
+
+#define __per_cpu_offset(cpu) (cpu_pda(cpu)->data_offset)
+#define __my_cpu_offset read_pda(data_offset)
+
+#define per_cpu_offset(x) (__per_cpu_offset(x))
+
+#endif
+#include <asm-generic/percpu.h>
+
+DECLARE_PER_CPU(struct x8664_pda, pda);
+
+#else /* CONFIG_X86_64 */
+
+#ifdef __ASSEMBLY__
+
+/*
+ * PER_CPU finds an address of a per-cpu variable.
+ *
+ * Args:
+ *    var - variable name
+ *    reg - 32bit register
+ *
+ * The resulting address is stored in the "reg" argument.
+ *
+ * Example:
+ *    PER_CPU(cpu_gdt_descr, %ebx)
+ */
+#ifdef CONFIG_SMP
+#define PER_CPU(var, reg)                              \
+       movl %fs:per_cpu__##this_cpu_off, reg;          \
+       lea per_cpu__##var(reg), reg
+#define PER_CPU_VAR(var)       %fs:per_cpu__##var
+#else /* ! SMP */
+#define PER_CPU(var, reg)                      \
+       movl $per_cpu__##var, reg
+#define PER_CPU_VAR(var)       per_cpu__##var
+#endif /* SMP */
+
+#else /* ...!ASSEMBLY */
+
+/*
+ * PER_CPU finds an address of a per-cpu variable.
+ *
+ * Args:
+ *    var - variable name
+ *    cpu - 32bit register containing the current CPU number
+ *
+ * The resulting address is stored in the "cpu" argument.
+ *
+ * Example:
+ *    PER_CPU(cpu_gdt_descr, %ebx)
+ */
+#ifdef CONFIG_SMP
+
+#define __my_cpu_offset x86_read_percpu(this_cpu_off)
+
+/* fs segment starts at (positive) offset == __per_cpu_offset[cpu] */
+#define __percpu_seg "%%fs:"
+
+#else  /* !SMP */
+
+#define __percpu_seg ""
+
+#endif /* SMP */
+
+#include <asm-generic/percpu.h>
+
+/* We can use this directly for local CPU (faster). */
+DECLARE_PER_CPU(unsigned long, this_cpu_off);
+
+/* For arch-specific code, we can use direct single-insn ops (they
+ * don't give an lvalue though). */
+extern void __bad_percpu_size(void);
+
+#define percpu_to_op(op,var,val)                               \
+       do {                                                    \
+               typedef typeof(var) T__;                        \
+               if (0) { T__ tmp__; tmp__ = (val); }            \
+               switch (sizeof(var)) {                          \
+               case 1:                                         \
+                       asm(op "b %1,"__percpu_seg"%0"          \
+                           : "+m" (var)                        \
+                           :"ri" ((T__)val));                  \
+                       break;                                  \
+               case 2:                                         \
+                       asm(op "w %1,"__percpu_seg"%0"          \
+                           : "+m" (var)                        \
+                           :"ri" ((T__)val));                  \
+                       break;                                  \
+               case 4:                                         \
+                       asm(op "l %1,"__percpu_seg"%0"          \
+                           : "+m" (var)                        \
+                           :"ri" ((T__)val));                  \
+                       break;                                  \
+               default: __bad_percpu_size();                   \
+               }                                               \
+       } while (0)
+
+#define percpu_from_op(op,var)                                 \
+       ({                                                      \
+               typeof(var) ret__;                              \
+               switch (sizeof(var)) {                          \
+               case 1:                                         \
+                       asm(op "b "__percpu_seg"%1,%0"          \
+                           : "=r" (ret__)                      \
+                           : "m" (var));                       \
+                       break;                                  \
+               case 2:                                         \
+                       asm(op "w "__percpu_seg"%1,%0"          \
+                           : "=r" (ret__)                      \
+                           : "m" (var));                       \
+                       break;                                  \
+               case 4:                                         \
+                       asm(op "l "__percpu_seg"%1,%0"          \
+                           : "=r" (ret__)                      \
+                           : "m" (var));                       \
+                       break;                                  \
+               default: __bad_percpu_size();                   \
+               }                                               \
+               ret__; })
+
+#define x86_read_percpu(var) percpu_from_op("mov", per_cpu__##var)
+#define x86_write_percpu(var,val) percpu_to_op("mov", per_cpu__##var, val)
+#define x86_add_percpu(var,val) percpu_to_op("add", per_cpu__##var, val)
+#define x86_sub_percpu(var,val) percpu_to_op("sub", per_cpu__##var, val)
+#define x86_or_percpu(var,val) percpu_to_op("or", per_cpu__##var, val)
+#endif /* !__ASSEMBLY__ */
+#endif /* !CONFIG_X86_64 */
+#endif /* _ASM_X86_PERCPU_H_ */
diff --git a/include/asm-x86/percpu_32.h b/include/asm-x86/percpu_32.h
deleted file mode 100644
index e62ce2f..0000000
--- a/include/asm-x86/percpu_32.h
+++ /dev/null
@@ -1,128 +0,0 @@
-#ifndef __ARCH_I386_PERCPU__
-#define __ARCH_I386_PERCPU__
-
-#ifdef __ASSEMBLY__
-
-/*
- * PER_CPU finds an address of a per-cpu variable.
- *
- * Args:
- *    var - variable name
- *    reg - 32bit register
- *
- * The resulting address is stored in the "reg" argument.
- *
- * Example:
- *    PER_CPU(cpu_gdt_descr, %ebx)
- */
-#ifdef CONFIG_SMP
-#define PER_CPU(var, reg)                              \
-       movl %fs:per_cpu__##this_cpu_off, reg;          \
-       lea per_cpu__##var(reg), reg
-#define PER_CPU_VAR(var)       %fs:per_cpu__##var
-#else /* ! SMP */
-#define PER_CPU(var, reg)                      \
-       movl $per_cpu__##var, reg
-#define PER_CPU_VAR(var)       per_cpu__##var
-#endif /* SMP */
-
-#else /* ...!ASSEMBLY */
-
-/*
- * PER_CPU finds an address of a per-cpu variable.
- *
- * Args:
- *    var - variable name
- *    cpu - 32bit register containing the current CPU number
- *
- * The resulting address is stored in the "cpu" argument.
- *
- * Example:
- *    PER_CPU(cpu_gdt_descr, %ebx)
- */
-#ifdef CONFIG_SMP
-
-#define __my_cpu_offset x86_read_percpu(this_cpu_off)
-
-/* A macro to avoid #include hell... */
-#define percpu_modcopy(pcpudst, src, size)                     \
-do {                                                           \
-       unsigned int __i;                                       \
-       for_each_possible_cpu(__i)                              \
-               memcpy((pcpudst)+__per_cpu_offset[__i],         \
-                      (src), (size));                          \
-} while (0)
-
-/* fs segment starts at (positive) offset == __per_cpu_offset[cpu] */
-#define __percpu_seg "%%fs:"
-
-#else  /* !SMP */
-
-#define __percpu_seg ""
-
-#endif /* SMP */
-
-#include <asm-generic/percpu.h>
-
-/* We can use this directly for local CPU (faster). */
-DECLARE_PER_CPU(unsigned long, this_cpu_off);
-
-/* For arch-specific code, we can use direct single-insn ops (they
- * don't give an lvalue though). */
-extern void __bad_percpu_size(void);
-
-#define percpu_to_op(op,var,val)                               \
-       do {                                                    \
-               typedef typeof(var) T__;                        \
-               if (0) { T__ tmp__; tmp__ = (val); }            \
-               switch (sizeof(var)) {                          \
-               case 1:                                         \
-                       asm(op "b %1,"__percpu_seg"%0"          \
-                           : "+m" (var)                        \
-                           :"ri" ((T__)val));                  \
-                       break;                                  \
-               case 2:                                         \
-                       asm(op "w %1,"__percpu_seg"%0"          \
-                           : "+m" (var)                        \
-                           :"ri" ((T__)val));                  \
-                       break;                                  \
-               case 4:                                         \
-                       asm(op "l %1,"__percpu_seg"%0"          \
-                           : "+m" (var)                        \
-                           :"ri" ((T__)val));                  \
-                       break;                                  \
-               default: __bad_percpu_size();                   \
-               }                                               \
-       } while (0)
-
-#define percpu_from_op(op,var)                                 \
-       ({                                                      \
-               typeof(var) ret__;                              \
-               switch (sizeof(var)) {                          \
-               case 1:                                         \
-                       asm(op "b "__percpu_seg"%1,%0"          \
-                           : "=r" (ret__)                      \
-                           : "m" (var));                       \
-                       break;                                  \
-               case 2:                                         \
-                       asm(op "w "__percpu_seg"%1,%0"          \
-                           : "=r" (ret__)                      \
-                           : "m" (var));                       \
-                       break;                                  \
-               case 4:                                         \
-                       asm(op "l "__percpu_seg"%1,%0"          \
-                           : "=r" (ret__)                      \
-                           : "m" (var));                       \
-                       break;                                  \
-               default: __bad_percpu_size();                   \
-               }                                               \
-               ret__; })
-
-#define x86_read_percpu(var) percpu_from_op("mov", per_cpu__##var)
-#define x86_write_percpu(var,val) percpu_to_op("mov", per_cpu__##var, val)
-#define x86_add_percpu(var,val) percpu_to_op("add", per_cpu__##var, val)
-#define x86_sub_percpu(var,val) percpu_to_op("sub", per_cpu__##var, val)
-#define x86_or_percpu(var,val) percpu_to_op("or", per_cpu__##var, val)
-#endif /* !__ASSEMBLY__ */
-
-#endif /* __ARCH_I386_PERCPU__ */
diff --git a/include/asm-x86/percpu_64.h b/include/asm-x86/percpu_64.h
deleted file mode 100644
index e7f3f6d..0000000
--- a/include/asm-x86/percpu_64.h
+++ /dev/null
@@ -1,32 +0,0 @@
-#ifndef _ASM_X8664_PERCPU_H_
-#define _ASM_X8664_PERCPU_H_
-#include <linux/compiler.h>
-
-/* Same as asm-generic/percpu.h, except that we store the per cpu offset
-   in the PDA. Longer term the PDA and every per cpu variable
-   should be just put into a single section and referenced directly
-   from %gs */
-
-#ifdef CONFIG_SMP
-
-#include <asm/pda.h>
-
-#define __per_cpu_offset(cpu) (cpu_pda(cpu)->data_offset)
-#define __my_cpu_offset read_pda(data_offset)
-
-#define per_cpu_offset(x) (__per_cpu_offset(x))
-
-/* A macro to avoid #include hell... */
-#define percpu_modcopy(pcpudst, src, size)                     \
-do {                                                           \
-       unsigned int __i;                                       \
-       for_each_possible_cpu(__i)                              \
-               memcpy((pcpudst)+__per_cpu_offset(__i),         \
-                      (src), (size));                          \
-} while (0)
-
-#endif /* SMP */
-
-#include <asm-generic/percpu.h>
-
-#endif /* _ASM_X8664_PERCPU_H_ */
-
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