[PATCH 4/8] core-small: Shrink PID lookup tables

[Matt Mackall]

CONFIG_CORE_SMALL reduce size of pidmap table for small machines

Signed-off-by: Matt Mackall <mpm@xxxxxxxxxxx>

Index: tiny/include/linux/threads.h
===================================================================
--- tiny.orig/include/linux/threads.h	2004-12-04 15:42:35.000000000 -0800
+++ tiny/include/linux/threads.h	2004-12-04 19:42:19.032212529 -0800
@@ -25,11 +25,19 @@
 /*
  * This controls the default maximum pid allocated to a process
  */
+#ifdef CONFIG_CORE_SMALL
+#define PID_MAX_DEFAULT 0x1000
+#else
 #define PID_MAX_DEFAULT 0x8000
+#endif
 
 /*
  * A maximum of 4 million PIDs should be enough for a while:
  */
+#ifdef CONFIG_CORE_SMALL
+#define PID_MAX_LIMIT (PAGE_SIZE*8) /* one pidmap entry */
+#else
 #define PID_MAX_LIMIT (sizeof(long) > 4 ? 4*1024*1024 : PID_MAX_DEFAULT)
+#endif
 
 #endif
-
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