This patch allocates the percpu VM area using the fix addresses.
It defines currently 1 meg per cpu.
Signed-off-by: Steven Rostedt <[email protected]>
Index: linux-2.6.16-test/include/asm-i386/fixmap.h
===================================================================
--- linux-2.6.16-test.orig/include/asm-i386/fixmap.h 2006-05-17 04:32:27.000000000 -0400
+++ linux-2.6.16-test/include/asm-i386/fixmap.h 2006-05-17 04:59:34.000000000 -0400
@@ -32,6 +32,10 @@
#include <asm/kmap_types.h>
#endif
+/* One meg per cpu of VM space */
+#define PERCPU_PAGES 256
+#define PERCPU_SIZE (PERCPU_PAGES << PAGE_SHIFT)
+
/*
* Here we define all the compile-time 'special' virtual
* addresses. The point is to have a constant address at
@@ -83,6 +87,8 @@ enum fixed_addresses {
#ifdef CONFIG_PCI_MMCONFIG
FIX_PCIE_MCFG,
#endif
+ FIX_PERCPU_BEGIN,
+ FIX_PERCPU_END = FIX_PERCPU_BEGIN+(PERCPU_PAGES*NR_CPUS)-1,
__end_of_permanent_fixed_addresses,
/* temporary boot-time mappings, used before ioremap() is functional */
#define NR_FIX_BTMAPS 16
-
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