From: Keir Fraser <keir@xen.org>
To: Olaf Hering <olaf@aepfle.de>, George Dunlap <dunlapg@umich.edu>
Cc: xen-devel@lists.xensource.com
Subject: Re: Re: how to avoid lost trace records?
Date: Thu, 25 Nov 2010 22:27:38 +0000 [thread overview]
Message-ID: <C914935A.B229%keir@xen.org> (raw)
In-Reply-To: <20101125210408.GA16766@aepfle.de>
On 25/11/2010 21:04, "Olaf Hering" <olaf@aepfle.de> wrote:
> --- xen-unstable.hg-4.1.22415.orig/xen/common/trace.c
> +++ xen-unstable.hg-4.1.22415/xen/common/trace.c
> @@ -48,7 +48,8 @@ integer_param("tbuf_size", opt_tbuf_size
>
> /* Pointers to the meta-data objects for all system trace buffers */
> static struct t_info *t_info;
> -#define T_INFO_PAGES 2 /* Size fixed at 2 pages for now. */
> +#define T_INFO_PAGES_ORDER 1 /* Size fixed at 2 pages for now. */
> +#define T_INFO_PAGES (1 << T_INFO_PAGES_ORDER)
> #define T_INFO_SIZE ((T_INFO_PAGES)*(PAGE_SIZE))
> static DEFINE_PER_CPU_READ_MOSTLY(struct t_buf *, t_bufs);
> static DEFINE_PER_CPU_READ_MOSTLY(unsigned char *, t_data);
This patch looks like it has no effect whatsoever.
-- Keir
prev parent reply other threads:[~2010-11-25 22:27 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-11-19 15:46 how to avoid lost trace records? Olaf Hering
2010-11-19 21:30 ` Olaf Hering
2010-11-20 20:21 ` Olaf Hering
2010-11-22 11:53 ` George Dunlap
2010-11-22 12:40 ` Olaf Hering
2010-11-22 12:51 ` George Dunlap
2010-11-22 13:46 ` Keir Fraser
2010-11-22 14:43 ` George Dunlap
2010-11-25 21:04 ` Olaf Hering
2010-11-25 22:27 ` Keir Fraser [this message]
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