1027dbdc46
[ Upstream commit d4aa219a074a5abaf95a756b9f0d190b5c03a945 ]
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
425 B
C
13 lines
425 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#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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