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Date: Sun, 3 Oct 2010 03:29:43 +0000
From: Ævar Arnfjörð Bjarmason <avarab@...il.com>
To: Stephen Hemminger <shemminger@...tta.com>
Cc: Andrew Morton <akpm@...ux-foundation.org>,
Michal Marek <mmarek@...e.cz>, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 2/2] namespace.pl : update file exclusion list
On Tue, Sep 28, 2010 at 08:44, Stephen Hemminger <shemminger@...tta.com> wrote:
> The list of exceptions in kernel tree was out of date. Convert
> the long list of if clauses to a hashes which is more efficient
> and more common in perl.
>
> Signed-off-by: Stephen Hemminger <shemminger@...tta.com>
>
> --- a/scripts/namespace.pl 2010-09-28 09:28:52.251563058 +0900
> +++ b/scripts/namespace.pl 2010-09-28 15:13:38.092073114 +0900
> @@ -84,6 +84,58 @@ my %ksymtab = (); # names that appear in
> 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 $name
>
> +my %nmexception = (
> + 'fs/ext3/bitmap' => 1,
> + 'fs/ext4/bitmap' => 1,
> + 'arch/x86/lib/thunk_32' => 1,
> + 'arch/x86/lib/cmpxchg' => 1,
> + 'arch/x86/vdso/vdso32/note' => 1,
> + 'lib/irq_regs' => 1,
> + 'usr/initramfs_data' => 1,
> + 'drivers/scsi/aic94xx/aic94xx_dump' => 1,
> + 'drivers/scsi/libsas/sas_dump' => 1,
> + 'lib/dec_and_lock' => 1,
> + 'drivers/ide/ide-probe-mini' => 1,
> + 'usr/initramfs_data' => 1,
> + 'drivers/acpi/acpia/exdump' => 1,
> + 'drivers/acpi/acpia/rsdump' => 1,
> + 'drivers/acpi/acpia/nsdumpdv' => 1,
> + 'drivers/acpi/acpia/nsdump' => 1,
> + 'arch/ia64/sn/kernel/sn2/io' => 1,
> + 'arch/ia64/kernel/gate-data' => 1,
> + 'security/capability' => 1,
> + 'fs/ntfs/sysctl' => 1,
> + 'fs/jfs/jfs_debug' => 1,
> +);
> +
> +my %nameexception = (
> + 'mod_use_count_' => 1,
> + '__initramfs_end' => 1,
> + '__initramfs_start' => 1,
> + '_einittext' => 1,
> + '_sinittext' => 1,
> + 'kallsyms_names' => 1,
> + 'kallsyms_num_syms' => 1,
> + 'kallsyms_addresses'=> 1,
> + '__this_module' => 1,
> + '_etext' => 1,
> + '_edata' => 1,
> + '_end' => 1,
> + '__bss_start' => 1,
> + '_text' => 1,
> + '_stext' => 1,
> + '__gp' => 1,
> + 'ia64_unw_start' => 1,
> + 'ia64_unw_end' => 1,
> + '__init_begin' => 1,
> + '__init_end' => 1,
> + '__bss_stop' => 1,
> + '__nosave_begin' => 1,
> + '__nosave_end' => 1,
> + 'pg0' => 1,
> +);
> +
> +
> &find(\&linux_objects, '.'); # find the objects and do_nm on them
> &list_multiply_defined();
> &resolve_external_references();
> @@ -272,27 +324,9 @@ sub do_nm
> close($nmdata);
>
> if ($#nmdata < 0) {
> - if (
> - $fullname ne "lib/brlock.o"
> - && $fullname ne "lib/dec_and_lock.o"
> - && $fullname ne "fs/xfs/xfs_macros.o"
> - && $fullname ne "drivers/ide/ide-probe-mini.o"
> - && $fullname ne "usr/initramfs_data.o"
> - && $fullname ne "drivers/acpi/executer/exdump.o"
> - && $fullname ne "drivers/acpi/resources/rsdump.o"
> - && $fullname ne "drivers/acpi/namespace/nsdumpdv.o"
> - && $fullname ne "drivers/acpi/namespace/nsdump.o"
> - && $fullname ne "arch/ia64/sn/kernel/sn2/io.o"
> - && $fullname ne "arch/ia64/kernel/gate-data.o"
> - && $fullname ne "drivers/ieee1394/oui.o"
> - && $fullname ne "security/capability.o"
> - && $fullname ne "sound/core/wrappers.o"
> - && $fullname ne "fs/ntfs/sysctl.o"
> - && $fullname ne "fs/jfs/jfs_debug.o"
> - ) {
> - printf "No nm data for $fullname\n";
> - }
> - return;
> + printf "No nm data for $fullname\n"
> + unless $nmexception{$fullname};
> + return;
This would be more readable and easier to update:
my @nmexception = qw(
fs/ext3/bitmap
fs/ext4/bitmap
arch/x86/lib/thunk_32
arch/x86/lib/cmpxchg
arch/x86/vdso/vdso32/note
lib/irq_regs
usr/initramfs_data
drivers/scsi/aic94xx/aic94xx_dump
drivers/scsi/libsas/sas_dump
lib/dec_and_lock
drivers/ide/ide-probe-mini
usr/initramfs_data
drivers/acpi/acpia/exdump
drivers/acpi/acpia/rsdump
drivers/acpi/acpia/nsdumpdv
drivers/acpi/acpia/nsdump
arch/ia64/sn/kernel/sn2/io
arch/ia64/kernel/gate-data
security/capability
fs/ntfs/sysctl
fs/jfs/jfs_debug
);
my @nameexception = qw(
mod_use_count_
__initramfs_end
__initramfs_start
_einittext
_sinittext
kallsyms_names
kallsyms_num_syms
kallsyms_addresses
__this_module
_etext
_edata
_end
__bss_start
_text
_stext
__gp
ia64_unw_start
ia64_unw_end
__init_begin
__init_end
__bss_stop
__nosave_begin
__nosave_end
pg0
);
my (%nmexception, %nameexception);
@nmexception{@...xception} = ();
@nameexception{@...eexception} = ();
Then later:
print "No nm data for $fullname\n"
unless exists $nmexception{$fullname};
I.e. use print (not printf) and exists().
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