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authorGautham R Shenoy <ego@in.ibm.com>2009-11-26 04:58:55 -0500
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2009-12-09 01:09:35 -0500
commitb6db63d1a7f0138f348ba7a648df35ac6365988e (patch)
treed5e3aa14ba93f2dac15820bfec9fa2a6ae104206 /drivers/base
parent8389b37dffdc695b4fb363ebe0ed9748bb3b48d0 (diff)
pseries/pseries: Add code to online/offline CPUs of a DLPAR node
Currently the cpu-allocation/deallocation on pSeries is a two step process from the Userspace. - Set the indicators and update the device tree by writing to the sysfs tunable "probe" during allocation and "release" during deallocation. - Online / Offline the CPUs of the allocated/would_be_deallocated node by writing to the sysfs tunable "online". This patch adds kernel code to online/offline the CPUs soon_after/just_before they have been allocated/would_be_deallocated. This way, the userspace tool that performs DLPAR operations would only have to deal with one set of sysfs tunables namely "probe" and release". Signed-off-by: Gautham R Shenoy <ego@in.ibm.com> Signed-off-by: Nathan Fontenot <nfont@austin.ibm.com> Acked-by: Vaidyanathan Srinivasan <svaidy@linux.vnet.ibm.com> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'drivers/base')
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