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Date: Tue, 25 Sep 2007 17:49:12 +0900
From: "Ken'ichi Ohmichi" <oomichi@....nes.nec.co.jp>
To: Satyam Sharma <satyam@...radead.org>
CC: Adrian Bunk <bunk@...nel.org>,
kexec-ml <kexec@...ts.infradead.org>,
lkml <linux-kernel@...r.kernel.org>,
David Rientjes <rientjes@...gle.com>,
Joe Perches <joe@...ches.com>,
Andrew Morton <akpm@...ux-foundation.org>
Subject: Re: [PATCH 5/4] [-mm patch] Rename macros returning the size.
Hi Satyam,
Satyam Sharma wrote:
> > On Thu, 20 Sep 2007, Ken'ichi Ohmichi wrote:
>> >> [PATCH 5/4] [-mm patch] Rename macros returning the size.
>> >> The #define SIZE() should be renamed STRUCT_SIZE() since it's always
>> >> returning the size of the struct with a given name. This would allow
>> >> TYPEDEF_SIZE() to simply become SIZE() since it need not be used
>> >> exclusively for typedefs. This idea is David Rientjes's.
>> >> http://www.ussg.iu.edu/hypermail/linux/kernel/0709.1/1964.html
>> >>
>> >> Thanks
>> >> Ken'ichi Ohmichi
>> >>
>> >> ---
>> >> Signed-off-by: David Rientjes <rientjes@...gle.com>
> >
> > Hmm, I think adding a s-o-b line for David here isn't quite correct.
> > When someone reviews a patch and gives a suggestion, you only need to
> > copy him on the next iteration (and he may ack it or whatever, if he
> > wants) -- but adding a s-o-b line like that ends up (incorrectly)
> > denoting that he came between the author-to-git-commit chain ...
Thank you for kind explanation.
I can understand s-o-b clearly.
>> >> Signed-off-by: Ken'ichi Ohmichi <oomichi@....nes.nec.co.jp>
> >
>> >> --- a/include/linux/kexec.h 2007-09-18 15:22:19.000000000 +0900
>> >> +++ b/include/linux/kexec.h 2007-09-18 15:23:22.000000000 +0900
>> >> @@ -131,10 +131,10 @@ unsigned long paddr_vmcoreinfo_note(void
>> >> vmcoreinfo_append_str("SYMBOL(%s)=%lx\n", #name, (unsigned long)&name)
>> >> #define VMCOREINFO_SIZE(name) \
>> >> vmcoreinfo_append_str("SIZE(%s)=%lu\n", #name, \
>> >> - (unsigned long)sizeof(struct name))
>> >> -#define VMCOREINFO_TYPEDEF_SIZE(name) \
>> >> - vmcoreinfo_append_str("SIZE(%s)=%lu\n", #name, \
>> >> (unsigned long)sizeof(name))
>> >> +#define VMCOREINFO_STRUCT_SIZE(name) \
>> >> + vmcoreinfo_append_str("SIZE(%s)=%lu\n", #name, \
>> >> + (unsigned long)sizeof(struct name))
>> >> #define VMCOREINFO_OFFSET(name, field) \
>> >> vmcoreinfo_append_str("OFFSET(%s.%s)=%lu\n", #name, #field, \
>> >> (unsigned long)&(((struct name *)0)->field))
> >
> > Please use %zu and lose all the ugly (unsigned long) casts here.
That sounds good.
I updated the patch according to your comment.
Thanks
Ken'ichi Ohmichi
---
Signed-off-by: Ken'ichi Ohmichi <oomichi@....nes.nec.co.jp>
Acked-by: David Rientjes <rientjes@...gle.com>
---
diff -rpuN a/arch/ia64/kernel/machine_kexec.c b/arch/ia64/kernel/machine_kexec.c
--- a/arch/ia64/kernel/machine_kexec.c 2007-09-21 09:25:35.000000000 +0900
+++ b/arch/ia64/kernel/machine_kexec.c 2007-09-21 09:26:13.000000000 +0900
@@ -137,7 +137,7 @@ void arch_crash_save_vmcoreinfo(void)
VMCOREINFO_SYMBOL(node_memblk);
VMCOREINFO_LENGTH(node_memblk, NR_NODE_MEMBLKS);
- VMCOREINFO_SIZE(node_memblk_s);
+ VMCOREINFO_STRUCT_SIZE(node_memblk_s);
VMCOREINFO_OFFSET(node_memblk_s, start_paddr);
VMCOREINFO_OFFSET(node_memblk_s, size);
#endif
diff -rpuN a/include/linux/kexec.h b/include/linux/kexec.h
--- a/include/linux/kexec.h 2007-09-21 09:25:32.000000000 +0900
+++ b/include/linux/kexec.h 2007-09-21 09:27:23.000000000 +0900
@@ -130,11 +130,9 @@ unsigned long paddr_vmcoreinfo_note(void
#define VMCOREINFO_SYMBOL(name) \
vmcoreinfo_append_str("SYMBOL(%s)=%lx\n", #name, (unsigned long)&name)
#define VMCOREINFO_SIZE(name) \
- vmcoreinfo_append_str("SIZE(%s)=%lu\n", #name, \
- (unsigned long)sizeof(struct name))
-#define VMCOREINFO_TYPEDEF_SIZE(name) \
- vmcoreinfo_append_str("SIZE(%s)=%lu\n", #name, \
- (unsigned long)sizeof(name))
+ vmcoreinfo_append_str("SIZE(%s)=%zu\n", #name, sizeof(name))
+#define VMCOREINFO_STRUCT_SIZE(name) \
+ vmcoreinfo_append_str("SIZE(%s)=%zu\n", #name, sizeof(struct name))
#define VMCOREINFO_OFFSET(name, field) \
vmcoreinfo_append_str("OFFSET(%s.%s)=%lu\n", #name, #field, \
(unsigned long)&(((struct name *)0)->field))
diff -rpuN a/kernel/kexec.c b/kernel/kexec.c
--- a/kernel/kexec.c 2007-09-21 09:25:27.000000000 +0900
+++ b/kernel/kexec.c 2007-09-21 09:26:13.000000000 +0900
@@ -1210,15 +1210,15 @@ static int __init crash_save_vmcoreinfo_
#ifdef CONFIG_SPARSEMEM
VMCOREINFO_SYMBOL(mem_section);
VMCOREINFO_LENGTH(mem_section, NR_SECTION_ROOTS);
- VMCOREINFO_SIZE(mem_section);
+ VMCOREINFO_STRUCT_SIZE(mem_section);
VMCOREINFO_OFFSET(mem_section, section_mem_map);
#endif
- VMCOREINFO_SIZE(page);
- VMCOREINFO_SIZE(pglist_data);
- VMCOREINFO_SIZE(zone);
- VMCOREINFO_SIZE(free_area);
- VMCOREINFO_SIZE(list_head);
- VMCOREINFO_TYPEDEF_SIZE(nodemask_t);
+ VMCOREINFO_STRUCT_SIZE(page);
+ VMCOREINFO_STRUCT_SIZE(pglist_data);
+ VMCOREINFO_STRUCT_SIZE(zone);
+ VMCOREINFO_STRUCT_SIZE(free_area);
+ VMCOREINFO_STRUCT_SIZE(list_head);
+ VMCOREINFO_SIZE(nodemask_t);
VMCOREINFO_OFFSET(page, flags);
VMCOREINFO_OFFSET(page, _count);
VMCOREINFO_OFFSET(page, mapping);
_
-
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