Re: [patch] add /proc/pid/stack to dump task's stack trace

[Paul Menage]

On Fri, Nov 7, 2008 at 10:38 AM, Ken Chen <kenchen@xxxxxxxxxx> wrote:
>
> Here is a patch convert to seq_file using proc_single_show() helper.
> I don't see it to be any superior than what was before using
> snprintf().  seq_read also allocate one page for printf buffer, so
> functionally it is the same (perhaps a little bit better because it
> can use the whole page, compare to PROC_BLOCK_SIZE currently).

No - if you exceed the original buffer size, the seq_file system will
double up the memory buffer and try again if necessary.

Paul
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