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SubjectRe: [PATCH 2/4] x86: modify show_shared_cpu_map in intel_cacheinfo v2
On Sat, Apr 5, 2008 at 3:24 AM, Mike Travis <travis@sgi.com> wrote:
> --- linux-2.6.x86.orig/arch/x86/kernel/cpu/intel_cacheinfo.c
> +++ linux-2.6.x86/arch/x86/kernel/cpu/intel_cacheinfo.c
> @@ -593,14 +593,17 @@ static ssize_t show_size(struct _cpuid4_
>
> static ssize_t show_shared_cpu_map(struct _cpuid4_info *this_leaf, char *buf)
> {
> + unsigned long end = ALIGN((unsigned long)buf, PAGE_SIZE);
May I suggest this:

ptrdiff_t len = PTR_ALIGN(buf + PAGE_SIZE - 1, PAGE_SIZE) - buf;

> + if (len == 0)
> + len = PAGE_SIZE;
Than this is not necessary.

> +
> + if (len >= 2) {
> + n = cpus_scnprintf(buf, len-2, this_leaf->shared_cpu_map);
> + buf[n++] = '\n';
> + buf[n] = '\0';
> }
> return n;
> }
Apart from my suggestion and the use of cpus_scnprintf I think this patch is ok.

Bert

PS: sorry for the long delay.


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