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(parent: e5a700e) | patch
powerpc: Don't spin on sync instruction at boot time
authorSonny Rao <sonnyrao@us.ibm.com>
Fri, 11 Jul 2008 23:00:26 +0000 (09:00 +1000)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Tue, 15 Jul 2008 02:29:28 +0000 (12:29 +1000)
commit7b3fad3d54b502e69db651e8f77a1c52a7febe7b
treecf28721da06565509e05b7a9b1fa24f69b93f3e6tree | snapshot
parente5a700eec6e775ea847600d635249be183bd46c3commit | diff
powerpc: Don't spin on sync instruction at boot time

Push the sync below the secondary smp init hold loop and comment its purpose.
This should speed up boot by reducing global traffic during the single-threaded
portion of boot.

Signed-off-by: Sonny Rao <sonnyrao@us.ibm.com>
Signed-off-by: Milton Miller <miltonm@bga.com>
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
arch/powerpc/kernel/head_64.S diff | blob | history
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