Now we have a decent implementation it makes sense to have an
interface for "this cpu", analogous to __get_cpu_var.
Alpha is untested.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Cc: Christoph Lameter <cl@linux-foundation.org>
---
arch/alpha/include/asm/percpu.h | 10 ++++++++++
include/asm-generic/percpu.h | 11 +++++++++++
include/linux/percpu.h | 16 ++++++++++++++++
3 files changed, 37 insertions(+)
diff -r 0fb05e4271a6 arch/alpha/include/asm/percpu.h
--- a/arch/alpha/include/asm/percpu.h Mon Nov 17 22:19:40 2008 +1030
+++ b/arch/alpha/include/asm/percpu.h Mon Nov 17 22:21:09 2008 +1030
@@ -62,8 +62,16 @@
(*SHIFT_PERCPU_PTR(var, my_cpu_offset))
#define __raw_get_cpu_var(var) \
(*SHIFT_PERCPU_PTR(var, __my_cpu_offset))
+#define __get_cpu_ptr(ptr) \
+ RELOC_HIDE(ptr, my_cpu_offset)
+#define __raw_get_cpu_ptr(ptr) \
+ RELOC_HIDE(ptr, __my_cpu_offset)
#define per_cpu_ptr(ptr, cpu) \
RELOC_HIDE((ptr), (per_cpu_offset(cpu)))
+#define __get_cpu_ptr(ptr) \
+ RELOC_HIDE(ptr, my_cpu_offset)
+#define __raw_get_cpu_ptr(ptr) \
+ RELOC_HIDE(ptr, __my_cpu_offset)
#else /* ! SMP */
@@ -71,6 +79,8 @@
#define __get_cpu_var(var) per_cpu_var(var)
#define __raw_get_cpu_var(var) per_cpu_var(var)
#define per_cpu_ptr(ptr, cpu) (ptr)
+#define __get_cpu_ptr(ptr) (ptr)
+#define __raw_get_cpu_ptr(ptr) (ptr)
#define PER_CPU_ATTRIBUTES
diff -r 0fb05e4271a6 include/asm-generic/percpu.h
--- a/include/asm-generic/percpu.h Mon Nov 17 22:19:40 2008 +1030
+++ b/include/asm-generic/percpu.h Mon Nov 17 22:21:09 2008 +1030
@@ -72,6 +72,15 @@
#define per_cpu_ptr(ptr, cpu) \
RELOC_HIDE((ptr), (per_cpu_offset(cpu)))
+/**
+ * __get_cpu_ptr - get a pointer to this cpu's allocated memory
+ * @ptr: the pointer returned from alloc_percpu
+ *
+ * Similar to __get_cpu_var(), except for dynamic memory.
+ */
+#define __get_cpu_ptr(ptr) RELOC_HIDE(ptr, my_cpu_offset)
+#define __raw_get_cpu_ptr(ptr) RELOC_HIDE(ptr, __my_cpu_offset)...