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authorRusty Russell <rusty@rustcorp.com.au>2009-10-29 22:34:15 +0900
committerTejun Heo <tj@kernel.org>2009-10-29 22:34:15 +0900
commitdd17c8f72993f9461e9c19250e3f155d6d99df22 (patch)
treec33eedf0cf2862e9feeb796e94d49a2ccdce0149 /arch/x86/include/asm/percpu.h
parent390dfd95c5df1ab3921dd388d11b2aee332c3f2c (diff)
downloadop-kernel-dev-dd17c8f72993f9461e9c19250e3f155d6d99df22.zip
op-kernel-dev-dd17c8f72993f9461e9c19250e3f155d6d99df22.tar.gz
percpu: remove per_cpu__ prefix.
Now that the return from alloc_percpu is compatible with the address of per-cpu vars, it makes sense to hand around the address of per-cpu variables. To make this sane, we remove the per_cpu__ prefix we used created to stop people accidentally using these vars directly. Now we have sparse, we can use that (next patch). tj: * Updated to convert stuff which were missed by or added after the original patch. * Kill per_cpu_var() macro. Signed-off-by: Rusty Russell <rusty@rustcorp.com.au> Signed-off-by: Tejun Heo <tj@kernel.org> Reviewed-by: Christoph Lameter <cl@linux-foundation.org>
Diffstat (limited to 'arch/x86/include/asm/percpu.h')
-rw-r--r--arch/x86/include/asm/percpu.h37
1 files changed, 17 insertions, 20 deletions
diff --git a/arch/x86/include/asm/percpu.h b/arch/x86/include/asm/percpu.h
index 0c44196..4c170cc 100644
--- a/arch/x86/include/asm/percpu.h
+++ b/arch/x86/include/asm/percpu.h
@@ -25,19 +25,18 @@
*/
#ifdef CONFIG_SMP
#define PER_CPU(var, reg) \
- __percpu_mov_op %__percpu_seg:per_cpu__this_cpu_off, reg; \
- lea per_cpu__##var(reg), reg
-#define PER_CPU_VAR(var) %__percpu_seg:per_cpu__##var
+ __percpu_mov_op %__percpu_seg:this_cpu_off, reg; \
+ lea var(reg), reg
+#define PER_CPU_VAR(var) %__percpu_seg:var
#else /* ! SMP */
-#define PER_CPU(var, reg) \
- __percpu_mov_op $per_cpu__##var, reg
-#define PER_CPU_VAR(var) per_cpu__##var
+#define PER_CPU(var, reg) __percpu_mov_op $var, reg
+#define PER_CPU_VAR(var) var
#endif /* SMP */
#ifdef CONFIG_X86_64_SMP
#define INIT_PER_CPU_VAR(var) init_per_cpu__##var
#else
-#define INIT_PER_CPU_VAR(var) per_cpu__##var
+#define INIT_PER_CPU_VAR(var) var
#endif
#else /* ...!ASSEMBLY */
@@ -60,12 +59,12 @@
* There also must be an entry in vmlinux_64.lds.S
*/
#define DECLARE_INIT_PER_CPU(var) \
- extern typeof(per_cpu_var(var)) init_per_cpu_var(var)
+ extern typeof(var) init_per_cpu_var(var)
#ifdef CONFIG_X86_64_SMP
#define init_per_cpu_var(var) init_per_cpu__##var
#else
-#define init_per_cpu_var(var) per_cpu_var(var)
+#define init_per_cpu_var(var) var
#endif
/* For arch-specific code, we can use direct single-insn ops (they
@@ -142,16 +141,14 @@ do { \
* per-thread variables implemented as per-cpu variables and thus
* stable for the duration of the respective task.
*/
-#define percpu_read(var) percpu_from_op("mov", per_cpu__##var, \
- "m" (per_cpu__##var))
-#define percpu_read_stable(var) percpu_from_op("mov", per_cpu__##var, \
- "p" (&per_cpu__##var))
-#define percpu_write(var, val) percpu_to_op("mov", per_cpu__##var, val)
-#define percpu_add(var, val) percpu_to_op("add", per_cpu__##var, val)
-#define percpu_sub(var, val) percpu_to_op("sub", per_cpu__##var, val)
-#define percpu_and(var, val) percpu_to_op("and", per_cpu__##var, val)
-#define percpu_or(var, val) percpu_to_op("or", per_cpu__##var, val)
-#define percpu_xor(var, val) percpu_to_op("xor", per_cpu__##var, val)
+#define percpu_read(var) percpu_from_op("mov", var, "m" (var))
+#define percpu_read_stable(var) percpu_from_op("mov", var, "p" (&(var)))
+#define percpu_write(var, val) percpu_to_op("mov", var, val)
+#define percpu_add(var, val) percpu_to_op("add", var, val)
+#define percpu_sub(var, val) percpu_to_op("sub", var, val)
+#define percpu_and(var, val) percpu_to_op("and", var, val)
+#define percpu_or(var, val) percpu_to_op("or", var, val)
+#define percpu_xor(var, val) percpu_to_op("xor", var, val)
#define __this_cpu_read_1(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
#define __this_cpu_read_2(pcp) percpu_from_op("mov", (pcp), "m"(pcp))
@@ -236,7 +233,7 @@ do { \
({ \
int old__; \
asm volatile("btr %2,"__percpu_arg(1)"\n\tsbbl %0,%0" \
- : "=r" (old__), "+m" (per_cpu__##var) \
+ : "=r" (old__), "+m" (var) \
: "dIr" (bit)); \
old__; \
})
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