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* [email protected] <[email protected]> wrote:
> Use a single configuration for all cpus.
>
> @@ -1291,11 +1290,15 @@ ds_configure(const struct ds_configurati
> printk("bts/pebs record: %u/%u bytes\n",
> ds_cfg.sizeof_rec[ds_bts], ds_cfg.sizeof_rec[ds_pebs]);
>
> - WARN_ON_ONCE(MAX_SIZEOF_DS < (12 * ds_cfg.sizeof_ptr_field));
> + WARN_ON(MAX_SIZEOF_DS < (12 * ds_cfg.sizeof_ptr_field));
Why this change?
Firstly, it was not declared in the changelog which is a no-no.
Secondly, this is a bad change: we are more than content to have a
single such warning bootup - not dozens of it (on some large
system).
Ingo
>-----Original Message-----
>From: Ingo Molnar [mailto:[email protected]]
>Sent: Thursday, April 02, 2009 9:30 PM
>To: Metzger, Markus T
>Cc: [email protected]; [email protected]; [email protected]; [email protected];
>[email protected]; [email protected]; Villacis, Juan; [email protected]; linux-
>[email protected]
>Subject: Re: [patch 14/18] x86, ds: use single debug store cpu configuration
>
>
>* [email protected] <[email protected]> wrote:
>
>> Use a single configuration for all cpus.
>>
>
>> @@ -1291,11 +1290,15 @@ ds_configure(const struct ds_configurati
>> printk("bts/pebs record: %u/%u bytes\n",
>> ds_cfg.sizeof_rec[ds_bts], ds_cfg.sizeof_rec[ds_pebs]);
>>
>> - WARN_ON_ONCE(MAX_SIZEOF_DS < (12 * ds_cfg.sizeof_ptr_field));
>> + WARN_ON(MAX_SIZEOF_DS < (12 * ds_cfg.sizeof_ptr_field));
>
>Why this change?
The function is only called once, now - for the boot cpu.
The _ONCE is a nop. I thought its better to remove it, since it became redundant.
regards,
markus.
>
>Firstly, it was not declared in the changelog which is a no-no.
>
>Secondly, this is a bad change: we are more than content to have a
>single such warning bootup - not dozens of it (on some large
>system).
>
> Ingo
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Intel GmbH
Dornacher Strasse 1
85622 Feldkirchen/Muenchen Germany
Sitz der Gesellschaft: Feldkirchen bei Muenchen
Geschaeftsfuehrer: Douglas Lusk, Peter Gleissner, Hannes Schwaderer
Registergericht: Muenchen HRB 47456 Ust.-IdNr.
VAT Registration No.: DE129385895
Citibank Frankfurt (BLZ 502 109 00) 600119052
This e-mail and any attachments may contain confidential material for
the sole use of the intended recipient(s). Any review or distribution
by others is strictly prohibited. If you are not the intended
recipient, please contact the sender and delete all copies.