Re: [PATCH] percpu: add optimized generic percpu accessors

[Ingo Molnar]

* Rusty Russell <rusty@xxxxxxxxxxxxxxx> wrote:

> On Saturday 17 January 2009 08:38:32 Ingo Molnar wrote:
> > How do difficulties of dynamic percpu-alloc make my above suggestion 
> > unsuitable for SNMP stats in networking? Most of those stats are not 
> > dynamically allocated - they are plain straightforward percpu variables.
> 
> No they're not. [...]

hm, i see this got changed recently - part of the networking stats went 
over to the lib/percpu_counter API recently.

The larger point still remains: the kernel dominantly uses static percpu 
variables by a margin of 10 to 1, so we cannot just brush away the static 
percpu variables and must concentrate on optimizing that side with 
priority. It's nice if the dynamic percpu-alloc side improves as well, of 
course.

	Ingo
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/