patches/linux/2.6.6/linux-2.6.5-x86_64-unistd.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun May 20 13:48:26 2007 +0000 (2007-05-20)
changeset 112 ea15433daba0
permissions -rw-r--r--
Ah! I finally have a progress bar that doesn't stall the build!
- pipe size in Linux is only 8*512=4096 bytes
- pipe size is not setable
- when the feeding process spits out data faster than the eating
process can read it, then the feeding process stalls after 4KiB
of data sent to the pipe
- for us, the progress bar would spawn a sub-shell every line,
and the sub-shell would in turn spawn a 'date' command.
Which was sloooww as hell, and would cause some kind of a
starvation: the pipe was full most of the time, and the
feeding process was stalled all this time.

Now, we use internal variables and a little hack based onan offset
to determine the elapsed time. Much faster this way, but still
CPU-intensive.
     1 Retrieved with wget http://www.x86-64.org/lists/discuss/msg04963.html
     2 then tabs fixed up by rediffing
     3 
     4 Message-Id: EFF62C7EE88E71429E38641A1172F4C2077104@net.teracruz.com
     5 To: discuss@xxxxxxxxxx
     6 Subject: Compile error with glibc 2.3.2 + Linux 2.6.5 ARCH=x86_64
     7 From: "David Lee" david.lee@xxxxxxxxxxxx
     8 Date: Wed, 21 Apr 2004 15:26:04 -0500</li>
     9 
    10 I am getting compiler errors when trying to compile glibc 2.3.2 using
    11 the kernel headers from linux 2.6.5.  The headers from linux 2.6.3 work
    12 fine.
    13 
    14 I've traced the cause of the problem to a change made in
    15 ./include/asm-x86_64/unistd.h in the 2.6.4 release.
    16 
    17 +#ifndef __ASSEMBLY__
    18 +
    19 +#include <linux/linkage.h>
    20 +#include <linux/compiler.h>
    21 +#include <linux/types.h>
    22 +#include <asm/ptrace.h>
    23 +
    24 +asmlinkage long sys_ptrace(long request, long pid,
    25 +                                unsigned long addr, long data);
    26 +asmlinkage long sys_iopl(unsigned int level, struct pt_regs regs);
    27 +asmlinkage long sys_ioperm(unsigned long from, unsigned long num, int
    28 turn_on);
    29 +struct sigaction;
    30 +asmlinkage long sys_rt_sigaction(int sig,
    31 +                                const struct sigaction __user *act,
    32 +                                struct sigaction __user *oact,
    33 +                                size_t sigsetsize);
    34 +
    35 +#endif  /* __ASSEMBLY__ */
    36 
    37 Within glibc, ./sysdeps/unix/sysv/linux/x86_64/syscall.S ends up
    38 including this file, which chokes the assembler with the struct
    39 declarations in the above #include's.
    40 
    41 /home/dlee/vcs/Products/Breeze/Dev/Prj/LinuxRH8/tscale2/tools/x86_64/x86
    42 _64-linux/glibcinclude/linux/posix_types.h: Assembler messages:
    43 /home/dlee/vcs/Products/Breeze/Dev/Prj/LinuxRH8/tscale2/tools/x86_64/x86
    44 _64-linux/glibcinclude/linux/posix_types.h:36: Error: no such
    45 instruction: `typedef struct{'
    46 
    47 There are also errors about conflicting re-declarations further along in
    48 the glibc build.
    49 
    50 ../posix/sys/types.h:62: error: conflicting types for `dev_t'
    51 /home/dlee/vcs/Products/Breeze/Dev/Prj/LinuxRH8/tscale2/tools/x86_64/x86
    52 _64-linux/glibcinclude/linux/types.h:23: error: previous declaration of
    53 `dev_t'
    54 
    55 Changing the '#ifndef __ASSEMBLY__' to '#if ((!defined __ASSEMBLY__) &&
    56 (defined __KERNEL__))' clears up the problem.  My patch is below.
    57 
    58 dave
    59 
    60 
    61 --- linux-2.6.5/include/asm-x86_64/unistd.h.old	2004-04-03 19:37:36.000000000 -0800
    62 +++ linux-2.6.5/include/asm-x86_64/unistd.h	2004-05-05 11:07:11.000000000 -0700
    63 @@ -713,7 +713,7 @@
    64  
    65  #endif /* __KERNEL_SYSCALLS__ */
    66  
    67 -#ifndef __ASSEMBLY__
    68 +#if ((!defined __ASSEMBLY__) && (defined __KERNEL__))
    69  
    70  #include <linux/linkage.h>
    71  #include <linux/compiler.h>
    72 @@ -730,7 +730,7 @@
    73  				struct sigaction __user *oact,
    74  				size_t sigsetsize);
    75  
    76 -#endif	/* __ASSEMBLY__ */
    77 +#endif /* ((!defined __ASSEMBLY__) && (defined __KERNEL__) */
    78  
    79  #endif /* __NO_STUBS */
    80