linux-kernel - Re: [PATCH] Remove errors caught by checkpatch.pl in kernel/kallsyms.c

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Date:	Sun, 15 Feb 2009 19:47:52 +0100
From:	Sam Ravnborg <sam@...nborg.org>
To:	Manish Katiyar <mkatiyar@...il.com>
Cc:	mingo@...e.hu, LKML <linux-kernel@...r.kernel.org>,
	kernel-janitors@...r.kernel.org
Subject: Re: [PATCH] Remove errors caught by checkpatch.pl in kernel/kallsyms.c

On Mon, Feb 16, 2009 at 12:04:36AM +0530, Manish Katiyar wrote:
> Hi Ingo,
> 
> I used your code-quality script to do cleanup in kernel/kallsyms.c.
> Below patch removes errors generated by checkpatch.pl.
When doing so use checkpatch only as a hint generator and do
not concentrate only on the warnings/errors generated by checkpatch.

Your patch is an improvement but please fix the remaining issues.

	Sam

For example..
> -	return kallsyms_token_table[ kallsyms_token_index[ kallsyms_names[off+1] ] ];
> +	return kallsyms_token_table[kallsyms_token_index[kallsyms_names[off+1]]];

Add spaces around [off+1] so it looks like this: [off + 1]


>  }
> 
> 
> @@ -133,13 +133,13 @@ static unsigned int get_symbol_offset(unsigned long pos)
> 
>  	/* use the closest marker we have. We have markers every 256 positions,
>  	 * so that should be close enough */
> -	name = &kallsyms_names[ kallsyms_markers[pos>>8] ];
> +	name = &kallsyms_names[kallsyms_markers[pos>>8]];

Same here: [pos >> 8]


> 
>  	/* sequentially scan all the symbols up to the point we're searching for.
>  	 * Every symbol is stored in a [<len>][<len> bytes of data] format, so we
>  	 * just need to add the len to the current pointer for every symbol we
>  	 * wish to skip */
> -	for(i = 0; i < (pos&0xFF); i++)
> +	for (i = 0; i < (pos&0xFF); i++)
And here: (pos & 0xFF)

>  		name = name + (*name) + 1;
> 
>  	return name - kallsyms_names;
> @@ -323,6 +323,7 @@ int sprint_symbol(char *buffer, unsigned long address)
> 
>  	return len;
>  }
> +EXPORT_SYMBOL_GPL(sprint_symbol);
> 
>  /* Look up a kernel symbol and print it to the kernel messages. */
>  void __print_symbol(const char *fmt, unsigned long address)
> @@ -333,10 +334,10 @@ void __print_symbol(const char *fmt, unsigned
> long address)
> 
>  	printk(fmt, buffer);
>  }
> +EXPORT_SYMBOL(__print_symbol);
> 
>  /* To avoid using get_symbol_offset for every symbol, we carry prefix along. */
> -struct kallsym_iter
> -{
> +struct kallsym_iter {
>  	loff_t pos;
>  	unsigned long value;
>  	unsigned int nameoff; /* If iterating in core kernel symbols */
> @@ -385,7 +386,7 @@ static int update_iter(struct kallsym_iter *iter,
> loff_t pos)
>  		iter->pos = pos;
>  		return get_ksymbol_mod(iter);
>  	}
> -	
> +
>  	/* If we're not on the desired position, reset to new position. */
>  	if (pos != iter->pos)
>  		reset_iter(iter, pos);
> @@ -420,7 +421,7 @@ static int s_show(struct seq_file *m, void *p)
>  {
>  	struct kallsym_iter *iter = m->private;
> 
> -	/* Some debugging symbols have no name.  Ignore them. */
> +	/* Some debugging symbols have no name.  Ignore them. */
>  	if (!iter->name[0])
>  		return 0;
> 
> @@ -432,11 +433,11 @@ static int s_show(struct seq_file *m, void *p)
>  		type = iter->exported ? toupper(iter->type) :
>  					tolower(iter->type);
>  		seq_printf(m, "%0*lx %c %s\t[%s]\n",
> -			   (int)(2*sizeof(void*)),
> +			   (int)(2*sizeof(void *)),
(2 * sizeof(void *))


>  			   iter->value, type, iter->name, iter->module_name);
>  	} else
>  		seq_printf(m, "%0*lx %c %s\n",
> -			   (int)(2*sizeof(void*)),
> +			   (int)(2*sizeof(void *)),
and here again.

>  			   iter->value, iter->type, iter->name);
>  	return 0;
>  }
> @@ -481,7 +482,5 @@ static int __init kallsyms_init(void)
>  	proc_create("kallsyms", 0444, NULL, &kallsyms_operations);
>  	return 0;
>  }
> -__initcall(kallsyms_init);
> +device_initcall(kallsyms_init);
> 
> -EXPORT_SYMBOL(__print_symbol);
> -EXPORT_SYMBOL_GPL(sprint_symbol);

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