linux-kernel - Re: [PATCH] procfs: constify function pointer tables

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Date:	Wed, 23 Jan 2008 12:18:13 +0800
From:	"Bryan Wu" <cooloney.lkml@...il.com>
To:	"Jan Engelhardt" <jengelh@...putergmbh.de>
Cc:	"Andrew Morton" <akpm@...ux-foundation.org>,
	"Linux Kernel Mailing List" <linux-kernel@...r.kernel.org>,
	linux-fsdevel@...r.kernel.org,
	"Ivan Kokshaysky" <ink@...assic.park.msu.ru>,
	"Bryan Wu" <bryan.wu@...log.com>,
	"Mikael Starvik" <starvik@...s.com>,
	"David Howells" <dhowells@...hat.com>,
	"Hirokazu Takata" <takata@...ux-m32r.org>,
	"Geert Uytterhoeven" <geert@...ux-m68k.org>,
	"Roman Zippel" <zippel@...ux-m68k.org>,
	"Kyle McMartin" <kyle@...isc-linux.org>,
	"Matthew Wilcox" <matthew@....cx>,
	"Chris Zankel" <chris@...kel.net>
Subject: Re: [PATCH] procfs: constify function pointer tables

On Jan 23, 2008 4:00 AM, Jan Engelhardt <jengelh@...putergmbh.de> wrote:
> Hi,
>
>
> This touches so many different places that I did not feel like creating
> a miniscule patch for each architecture. I hope that is ok.
>
> ===Patch begins===
> [PATCH] procfs: constify function pointer tables
>
> Signed-off-by: Jan Engelhardt <jengelh@...putergmbh.de>
> ---
>  arch/alpha/kernel/setup.c     |    2 +-
>  arch/blackfin/kernel/setup.c  |    2 +-
>  arch/cris/kernel/setup.c      |    2 +-
>  arch/frv/kernel/setup.c       |    2 +-
>  arch/h8300/kernel/setup.c     |    2 +-
>  arch/m32r/kernel/setup.c      |    2 +-
>  arch/m68k/kernel/setup.c      |    2 +-
>  arch/m68knommu/kernel/setup.c |    2 +-
>  arch/parisc/kernel/setup.c    |    2 +-
>  arch/ppc/kernel/setup.c       |    2 +-
>  arch/v850/kernel/procfs.c     |    2 +-
>  arch/xtensa/kernel/setup.c    |    2 +-
>  fs/proc/base.c                |    6 +++---
>  fs/proc/nommu.c               |    2 +-
>  fs/proc/proc_misc.c           |   22 +++++++++++-----------
>  fs/proc/proc_sysctl.c         |    4 ++--
>  fs/proc/proc_tty.c            |    2 +-
>  fs/proc/task_mmu.c            |    8 ++++----
>  fs/proc/task_nommu.c          |    2 +-
>  19 files changed, 35 insertions(+), 35 deletions(-)
>
> diff --git a/arch/alpha/kernel/setup.c b/arch/alpha/kernel/setup.c
> index bd5e68c..823f18e 100644
> --- a/arch/alpha/kernel/setup.c
> +++ b/arch/alpha/kernel/setup.c
> @@ -1472,7 +1472,7 @@ c_stop(struct seq_file *f, void *v)
>  {
>  }
>
> -struct seq_operations cpuinfo_op = {
> +const struct seq_operations cpuinfo_op = {
>         .start  = c_start,
>         .next   = c_next,
>         .stop   = c_stop,
> diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c
> index d282201..d67cf54 100644
> --- a/arch/blackfin/kernel/setup.c
> +++ b/arch/blackfin/kernel/setup.c
> @@ -691,7 +691,7 @@ static void c_stop(struct seq_file *m, void *v)
>  {
>  }
>
> -struct seq_operations cpuinfo_op = {
> +const struct seq_operations cpuinfo_op = {
>         .start = c_start,
>         .next = c_next,
>         .stop = c_stop,

Thanks, I understand the seq_xxx() API needs "const struct seq_operations *".
So for Blackfin part, I agree with Mike.

Acked-by: Bryan Wu <bryan.wu@...log.com>

but there are still some other files need add "const":
---
/opt/git-tree/blackfin-2.6$ grep -r seq_operations arch/*
arch/alpha/kernel/setup.c:struct seq_operations cpuinfo_op = {
arch/arm/kernel/setup.c:struct seq_operations cpuinfo_op = {
arch/arm/mach-davinci/clock.c:static struct seq_operations davinci_ck_op = {
arch/avr32/kernel/cpu.c:struct seq_operations cpuinfo_op = {
arch/avr32/mm/tlb.c:static struct seq_operations tlb_ops = {
arch/blackfin/kernel/setup.c:struct seq_operations cpuinfo_op = {
arch/cris/kernel/setup.c:struct seq_operations cpuinfo_op = {
arch/frv/kernel/setup.c:struct seq_operations cpuinfo_op = {
arch/h8300/kernel/setup.c:struct seq_operations cpuinfo_op = {
arch/ia64/hp/common/sba_iommu.c:static struct seq_operations ioc_seq_ops = {
arch/ia64/kernel/perfmon.c:struct seq_operations pfm_seq_ops = {
arch/ia64/kernel/setup.c:struct seq_operations cpuinfo_op = {
arch/ia64/sn/kernel/sn2/sn2_smp.c:static struct seq_operations
sn2_ptc_seq_ops = {
arch/ia64/sn/kernel/sn2/sn_hwperf.c:static struct seq_operations
sn_topology_seq_ops = {
arch/m32r/kernel/setup.c:struct seq_operations cpuinfo_op = {
arch/m68k/kernel/setup.c:struct seq_operations cpuinfo_op = {
arch/m68knommu/kernel/setup.c:struct seq_operations cpuinfo_op = {
arch/mips/kernel/proc.c:struct seq_operations cpuinfo_op = {
arch/parisc/kernel/setup.c:struct seq_operations cpuinfo_op = {
arch/powerpc/kernel/setup-common.c:struct seq_operations cpuinfo_op = {
----

[!snip!]

Regards,
-Bryan
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