From: Anton Blanchard <anton@samba.org>
To: linux-mm@kvack.org
Cc: ak@suse.de
Subject: NUMA API on ppc64 issues
Date: Sun, 15 May 2005 13:00:36 +1000 [thread overview]
Message-ID: <20050515030036.GB5829@krispykreme> (raw)
Hi,
I tried running the NUMA API on a ppc64 box (version numactl-0.7pre2, I
hope thats the latest). I noticed is that the cpu affinity code is not
endian safe. Watching a 64bit version of numademo:
19206 sched_setaffinity(19206, 64, { 300000000, 0, 0, 0, 0, 0, 0, 0 }) = -1 EINVAL (Invalid argument)
...
19206 sched_setaffinity(19206, 64, { f000000000000, 0, 0, 0, 0, 0, 0, 0 }) = -1 EINVAL (Invalid argument)
Whereas my cpumask is 000000000000f003 - its swapping the two 32bit
words. Looks like numa_node_to_cpus needs some work to be endian safe.
Anton
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reply other threads:[~2005-05-15 3:00 UTC|newest]
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