Messages in this thread | | | Date | Fri, 29 Apr 2005 16:06:59 -0700 (PDT) | From | Christoph Lameter <> | Subject | Re: [PATCH 3/3] Page Fault Scalability V20: Avoid lock for anonymous write fault |
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On Fri, 29 Apr 2005, Christoph Hellwig wrote:
> On Fri, Apr 29, 2005 at 12:59:17PM -0700, Christoph Lameter wrote: > > Do not use the page_table_lock in do_anonymous_page. This will significantly > > increase the parallelism in the page fault handler for SMP systems. The patch > > also modifies the definitions of _mm_counter functions so that rss and anon_rss > > become atomic (and will use atomic64_t if available). > > I thought we said all architectures should provide an atomic64_t (and > given that it's not actually 64bit on 32bit architecture we should > probably rename it to atomic_long_t)
Yes the way atomic types are provided may need a revision. First of all we need atomic types that are size bound
atomic8_t atomic16_t atomic32_t
and (if available)
atomic64_t
and then some aliases
atomic_t -> atomic type for int atomic_long_t -> atomic type for long
If these types are available then this patch could be cleaned up to just use atomic_long_t. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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