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| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-03-09 13:00:14 +0000 |
|---|---|---|
| committer | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2011-03-10 10:06:41 +1100 |
| commit | 36e8695ca5dcf48c837a6efe6f780c47ac9ec808 (patch) | |
| tree | 8959a20737350fa91854c0f9d6dc1dda00aa5e79 /arch/powerpc | |
| parent | f2f6dad6ca3b06ae35a2e7b63f38158242c01531 (diff) | |
| download | lwn-36e8695ca5dcf48c837a6efe6f780c47ac9ec808.tar.gz lwn-36e8695ca5dcf48c837a6efe6f780c47ac9ec808.zip | |
powerpc/pseries: Disable VPNH feature
This feature triggers nasty races in the scheduler between the
rebuilding of the topology and the load balancing code, causing
the machine to hang.
Disable it for now until the races are fixed.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/mm/numa.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c index fd4812329570..0dc95c0aa3be 100644 --- a/arch/powerpc/mm/numa.c +++ b/arch/powerpc/mm/numa.c @@ -1516,7 +1516,8 @@ int start_topology_update(void) { int rc = 0; - if (firmware_has_feature(FW_FEATURE_VPHN) && + /* Disabled until races with load balancing are fixed */ + if (0 && firmware_has_feature(FW_FEATURE_VPHN) && get_lppaca()->shared_proc) { vphn_enabled = 1; setup_cpu_associativity_change_counters(); |