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Re: [Xen-devel] Re: how to avoid lost trace records?

To: Olaf Hering <olaf@xxxxxxxxx>, George Dunlap <dunlapg@xxxxxxxxx>

From: Keir Fraser <keir@xxxxxxx>

Date: Thu, 25 Nov 2010 22:27:38 +0000

Delivery-date: Thu, 25 Nov 2010 14:28:37 -0800

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Thread-topic: [Xen-devel] Re: how to avoid lost trace records?

On 25/11/2010 21:04, "Olaf Hering" <olaf@xxxxxxxxx> 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 _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel

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