litmus-rt.git - The LITMUS^RT kernel.

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author	Linus Torvalds <torvalds@g5.osdl.org>	2006-04-18 23:00:49 -0400
committer	Linus Torvalds <torvalds@g5.osdl.org>	2006-04-18 23:00:49 -0400
commit	8bbde0e6d52265158ee9625f383500c1a7d09ba9 (patch)
tree	c3a28edf1971fe6e1252816f28df2705ca674d05 /include/asm-arm/ide.h
parent	038e5e2bf2819058fb1b4b52b583bef9ad063356 (diff)

Linux v2.6.17-rc2v2.6.17-rc2

Diffstat (limited to 'include/asm-arm/ide.h')

0 files changed, 0 insertions, 0 deletions

#!/usr/bin/perl -w # # namespace.pl. Mon Aug 30 2004 # # Perform a name space analysis on the linux kernel. # # Copyright Keith Owens <kaos@ocs.com.au>. GPL. # # Invoke by changing directory to the top of the kernel object # tree then namespace.pl, no parameters. # # Tuned for 2.1.x kernels with the new module handling, it will # work with 2.0 kernels as well. # # Last change 2.6.9-rc1, adding support for separate source and object # trees. # # The source must be compiled/assembled first, the object files # are the primary input to this script. Incomplete or missing # objects will result in a flawed analysis. Compile both vmlinux # and modules. # # Even with complete objects, treat the result of the analysis # with caution. Some external references are only used by # certain architectures, others with certain combinations of # configuration parameters. Ideally the source should include # something like # # #ifndef CONFIG_... # static # #endif # symbol_definition; # # so the symbols are defined as static unless a particular # CONFIG_... requires it to be external. # # A symbol that is suffixed with '(export only)' has these properties # # * It is global. # * It is marked EXPORT_SYMBOL or EXPORT_SYMBOL_GPL, either in the same # source file or a different source file. # * Given the current .config, nothing uses the symbol. # # The symbol is a candidate for conversion to static, plus removal of the # export. But be careful that a different .config might use the symbol. # # # Name space analysis and cleanup is an iterative process. You cannot # expect to find all the problems in a single pass. # # * Identify possibly unnecessary global declarations, verify that they # really are unnecessary and change them to static. # * Compile and fix up gcc warnings about static, removing dead symbols # as necessary. # * make clean and rebuild with different configs (especially # CONFIG_MODULES=n) to see which symbols are being defined when the # config does not require them. These symbols bloat the kernel object # for no good reason, which is frustrating for embedded systems. # * Wrap config sensitive symbols in #ifdef CONFIG_foo, as long as the # code does not get too ugly. # * Repeat the name space analysis until you can live with with the # result. # require 5; # at least perl 5 use strict; use File::Find; my $nm = ($ENV{'NM'} || "nm") . " -p"; my $objdump = ($ENV{'OBJDUMP'} || "objdump") . " -s -j .comment"; my $srctree = ""; my $objtree = ""; $srctree = "$ENV{'srctree'}/" if (exists($ENV{'srctree'})); $objtree = "$ENV{'objtree'}/" if (exists($ENV{'objtree'})); if ($#ARGV != -1) { print STDERR "usage: $0 takes no parameters\n"; die("giving up\n"); } my %nmdata = (); # nm data for each object my %def = (); # all definitions for each name my %ksymtab = (); # names that appear in __ksymtab_ my %ref = (); # $ref{$name} exists if there is a true external reference to $name my %export = (); # $export{$name} exists if there is an EXPORT_... of $name my %nmexception = ( 'fs/ext3/bitmap' => 1, 'fs/ext4/bitmap' => 1, 'arch/x86/lib/thunk_32' => 1, 'arch/x86/lib/cmpxchg' => 1, 'arch/x86/vdso/vdso32/note' => 1, 'lib/irq_regs' => 1, 'usr/initramfs_data' => 1, 'drivers/scsi/aic94xx/aic94xx_dump' => 1, 'drivers/scsi/libsas/sas_dump' => 1, 'lib/dec_and_lock' => 1, 'drivers/ide/ide-probe-mini' => 1, 'usr/initramfs_data' => 1, 'drivers/acpi/acpia/exdump' => 1, 'drivers/acpi/acpia/rsdump' => 1, 'drivers/acpi/acpia/nsdumpdv' => 1, 'drivers/acpi/acpia/nsdump' => 1, 'arch/ia64/sn/kernel/sn2/io' => 1, 'arch/ia64/kernel/gate-data' => 1, 'security/capability' => 1, 'fs/ntfs/sysctl' => 1, 'fs/jfs/jfs_debug' => 1, ); my %nameexception = ( 'mod_use_count_' => 1, '__initramfs_end' => 1, '__initramfs_start' => 1, '_einittext' => 1, '_sinittext' => 1, 'kallsyms_names' => 1, 'kallsyms_num_syms' => 1, 'kallsyms_addresses'=> 1, '__this_module' => 1, '_etext' => 1, '_edata' => 1, '_end' => 1, '__bss_start' => 1, '_text' => 1, '_stext' => 1, '__gp' => 1, 'ia64_unw_start' => 1, 'ia64_unw_end' => 1, '__init_begin' => 1, '__init_end' => 1, '__bss_stop' => 1, '__nosave_begin' => 1, '__nosave_end' => 1, 'pg0' => 1, 'vdso_enabled' => 1, '__stack_chk_fail' => 1, 'VDSO32_PRELINK' => 1, 'VDSO32_vsyscall' => 1,


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