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Added README.

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1998-06-14  Martin Baulig  <baulig@taurus.uni-trier.de>

	* README: Added README.

	* kernel.patch: Patch for the Linux kernel to add the
	new system call.
This commit is contained in:
Martin Baulig
1998-06-14 12:40:59 +00:00
committed by Martin Baulig
parent b56c327ccc
commit 794a8efaed
3 changed files with 76 additions and 0 deletions
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6
kernel/ChangeLog Normal file
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1998-06-14 Martin Baulig <baulig@taurus.uni-trier.de>
* README: Added README.
* kernel.patch: Patch for the Linux kernel to add the
new system call.

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This is a new system call `table ()' for the Linux table. It is faster
than reading from /proc and can be used to fetch all information required
for libgtop until whe have some other function (extended sysctl, ...) in
standard kernels.
I didn't want to change sysctl or some other function myself cause this may
cause other applications relying upon those function to fail. This is
something for the ``real'' kernel gurus ...
To use this new system call for libgtop, do the following:
* Copy this directory to /usr/src/linux/table
* Make /usr/src/linux/include/linux/table.h symlink to /usr/src/linux/table/table.h
* Apply the patch `kernel.patch' to the kernel, compile, install and reboot
* Recompile libgtop (remove `config.cache' and run the `autogen.sh' again).
If you want to change and/or add something - feel free to do so !
Have fun,
Martin

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diff -ur linux-2.0.32/Makefile linux-hacked/Makefile
--- linux-2.0.32/Makefile Fri Nov 7 19:51:05 1997
+++ linux-hacked/Makefile Thu Jun 11 20:41:12 1998
@@ -87,7 +87,7 @@
# standard CFLAGS
#
-CFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer -fno-strength-reduce
+CFLAGS = -Wall -Wstrict-prototypes -g -O2 -fomit-frame-pointer -fno-strength-reduce
ifdef CONFIG_CPP
CFLAGS := $(CFLAGS) -x c++
@@ -113,12 +113,12 @@
# Include the make variables (CC, etc...)
#
-ARCHIVES =kernel/kernel.o mm/mm.o fs/fs.o ipc/ipc.o net/network.a
+ARCHIVES =kernel/kernel.o mm/mm.o fs/fs.o ipc/ipc.o net/network.a table/table.o
FILESYSTEMS =fs/filesystems.a
DRIVERS =drivers/block/block.a \
drivers/char/char.a
LIBS =$(TOPDIR)/lib/lib.a
-SUBDIRS =kernel drivers mm fs net ipc lib
+SUBDIRS =kernel drivers mm fs net ipc lib table
ifeq ($(CONFIG_ISDN),y)
DRIVERS := $(DRIVERS) drivers/isdn/isdn.a
diff -ur linux-2.0.32/arch/i386/kernel/entry.S linux-hacked/arch/i386/kernel/entry.S
--- linux-2.0.32/arch/i386/kernel/entry.S Tue Sep 16 23:42:45 1997
+++ linux-hacked/arch/i386/kernel/entry.S Thu Jun 11 21:37:20 1998
@@ -699,4 +699,6 @@
.long SYMBOL_NAME(sys_mremap)
.long 0,0
.long SYMBOL_NAME(sys_vm86)
- .space (NR_syscalls-166)*4
+ .long 0
+ .long SYMBOL_NAME(sys_table)
+ .space (NR_syscalls-168)*4
diff -ur linux-2.0.32/include/asm-i386/unistd.h linux-hacked/include/asm-i386/unistd.h
--- linux-2.0.32/include/asm-i386/unistd.h Fri Mar 22 07:34:02 1996
+++ linux-hacked/include/asm-i386/unistd.h Thu Jun 11 21:37:03 1998
@@ -169,6 +169,7 @@
#define __NR_sched_rr_get_interval 161
#define __NR_nanosleep 162
#define __NR_mremap 163
+#define __NR_table 168
/* XXX - _foo needs to be __foo, while __NR_bar could be _NR_bar. */
#define _syscall0(type,name) \