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authorEric Andersen2000-06-27 06:22:09 +0000
committerEric Andersen2000-06-27 06:22:09 +0000
commitcb1d841f0943fc1550a5f93be62d5cedab95ecfc (patch)
tree80d6108f49cd9fcbb2e9a87e0f1ec84b1ab7ecaf /examples
parent27b5924b96fc71a6f70ea1a13a5232fca2439e7d (diff)
downloadbusybox-cb1d841f0943fc1550a5f93be62d5cedab95ecfc.zip
busybox-cb1d841f0943fc1550a5f93be62d5cedab95ecfc.tar.gz
This kernel patch is no longer needed, with the change I made to init
and free... -Erik
Diffstat (limited to 'examples')
-rw-r--r--examples/kernel-patches/2.4.x-revert-sysinfo.patch77
1 files changed, 0 insertions, 77 deletions
diff --git a/examples/kernel-patches/2.4.x-revert-sysinfo.patch b/examples/kernel-patches/2.4.x-revert-sysinfo.patch
deleted file mode 100644
index c7cd5a7..0000000
--- a/examples/kernel-patches/2.4.x-revert-sysinfo.patch
+++ /dev/null
@@ -1,77 +0,0 @@
-I have a version of free I wrote for BusyBox that uses sysinfo (rather then
-/proc) to get its information. Under 2.2.x it reports normal stuff, i.e.
- [andersen@dillweed busybox]$ ./free
- total used free shared buffers
- Mem: 127800 124268 3532 16956 7544
- Swap: 128516 13584 114932
- Total: 256316 137852 118464
-
-while under 2.2.0-test1-ac7 it reports wierd numbers (~ #/4096)
- [andersen@dillweed busybox]$ ./free
- total used free shared buffers
- Mem: 30 11 19 0 1
- Swap: 31 0 31
- Total: 61 11 50
-
-After investigating the problem, it turns out that somewhere during 2.3.x the
-values for memory stored in struct sysinfo changed from being stored as bytes
-to being units of PAGE_SIZE, but kernel/info.c was never updated to reflect
-this change in definition.
-
-Breaking free isn't that big of a deal, but I also use sysinfo in init to check
-that the box has enough ram from within the init process (and no, mounting
-/proc from within init and reading /proc/meminfo is not a good solution.
-BusyBox is often used in embedded systems where /proc is not compiled in).
-
-The following patch reinstates the traditional sysinfo(2) interface by
-returning bytes (not units of PAGE_SIZE) for memory values.
-
-An additional patch suggestion (not included here) would be to eliminate the
-supurfluous "mem_unit" variable from struct_sysinfo in include/linux/kernel.h
-and arch/*/mm/init.c.
-
- -Erik
-
---
-Erik B. Andersen Web: http://www.xmission.com/~andersen/
- email: andersee@debian.org
---This message was written using 73% post-consumer electrons--
-
---- linux/kernel/info.c.orig Mon Aug 23 12:15:53 1999
-+++ linux/kernel/info.c Sun Jun 4 01:13:11 2000
-@@ -2,6 +2,8 @@
- * linux/kernel/info.c
- *
- * Copyright (C) 1992 Darren Senn
-+ * Fixed to once again return bytes instead of page counts,
-+ * June 2000, by Erik Andersen <andersee@debian.org>
- */
-
- /* This implements the sysinfo() system call */
-@@ -10,7 +12,6 @@
- #include <linux/unistd.h>
- #include <linux/swap.h>
- #include <linux/smp_lock.h>
--
- #include <asm/uaccess.h>
-
- asmlinkage long sys_sysinfo(struct sysinfo *info)
-@@ -31,6 +32,17 @@
-
- si_meminfo(&val);
- si_swapinfo(&val);
-+
-+ /* These are in units of PAGE_SIZE, but this interface
-+ * has always returned bytes. Make it return bytes */
-+ val.totalram*=PAGE_SIZE;
-+ val.freeram*=PAGE_SIZE;
-+ val.sharedram*=PAGE_SIZE;
-+ val.bufferram*=PAGE_SIZE;
-+ val.totalswap*=PAGE_SIZE;
-+ val.freeswap*=PAGE_SIZE;
-+ val.totalhigh*=PAGE_SIZE;
-+ val.freehigh*=PAGE_SIZE;
-
- if (copy_to_user(info, &val, sizeof(struct sysinfo)))
- return -EFAULT;
-