From: Matt Mackall <mpm@selenic.com>
To: Andrew Morton <akpm@osdl.org>
Cc: Linux Kernel <linux-kernel@vger.kernel.org>
Subject: [PATCH 4/8] core-small: Shrink PID lookup tables
Date: Fri, 21 Jan 2005 18:09:48 -0600 [thread overview]
Message-ID: <5.464233479@selenic.com> (raw)
In-Reply-To: <4.464233479@selenic.com>
CONFIG_CORE_SMALL reduce size of pidmap table for small machines
Signed-off-by: Matt Mackall <mpm@selenic.com>
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
next prev parent reply other threads:[~2005-01-22 0:38 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-01-22 0:09 [PATCH 0/8] core-small: Introduce CONFIG_CORE_SMALL from -tiny Matt Mackall
2005-01-22 0:09 ` [PATCH 1/8] core-small: Add option to embedded menu Matt Mackall
2005-01-22 0:09 ` [PATCH 2/8] core-small: Collapse major names hash Matt Mackall
2005-01-22 0:09 ` [PATCH 3/8] core-small: Collapse chrdevs hash Matt Mackall
2005-01-22 0:09 ` Matt Mackall [this message]
2005-01-22 0:09 ` [PATCH 5/8] core-small: Shrink uid hash Matt Mackall
2005-01-22 0:09 ` [PATCH 6/8] core-small: Shrink futex queue hash Matt Mackall
2005-01-22 0:09 ` [PATCH 7/8] core-small: Shrink timer lists Matt Mackall
2005-01-22 0:09 ` [PATCH 8/8] core-small: Shrink console buffer Matt Mackall
2005-01-23 8:40 ` [PATCH 0/8] core-small: Introduce CONFIG_CORE_SMALL from -tiny Andrew Morton
2005-01-23 17:52 ` Matt Mackall
2005-01-23 21:05 ` Andrew Morton
2005-01-24 2:50 ` Matt Mackall
2005-01-24 20:00 ` Alan Cox
2005-01-24 22:47 ` Tim Bird
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