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88311d7966
[ Upstream commitd4aa219a07] Allow external callers to force the cacheinfo code to release all its references to cache nodes, e.g. before processing device tree updates post-migration, and to rebuild the hierarchy afterward. CPU online/offline must be blocked by callers; enforce this. Fixes:410bccf978("powerpc/pseries: Partition migration in the kernel") Signed-off-by: Nathan Lynch <nathanl@linux.ibm.com> Reviewed-by: Gautham R. Shenoy <ego@linux.vnet.ibm.com> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Signed-off-by: Sasha Levin <sashal@kernel.org>
13 lines
386 B
C
13 lines
386 B
C
#ifndef _PPC_CACHEINFO_H
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#define _PPC_CACHEINFO_H
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/* These are just hooks for sysfs.c to use. */
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extern void cacheinfo_cpu_online(unsigned int cpu_id);
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extern void cacheinfo_cpu_offline(unsigned int cpu_id);
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/* Allow migration/suspend to tear down and rebuild the hierarchy. */
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extern void cacheinfo_teardown(void);
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extern void cacheinfo_rebuild(void);
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#endif /* _PPC_CACHEINFO_H */
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