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hsavmcore is designed to make the dump process with kdump more efficient. With hsavmcore, the HSA memory that contains a part of the production kernel's memory can be released early in the process. Depending on the size of the production kernel's memory, writing the dump to persistent storage can be time consuming and prevent the HSA memory from being reused by other LPARs. Signed-off-by: Alexander Egorenkov <egorenar@linux.ibm.com> Reviewed-by: Philipp Rudo <prudo@linux.ibm.com> Acked-by: Jan Höppner <hoeppner@linux.ibm.com> Signed-off-by: Jan Höppner <hoeppner@linux.ibm.com>
25 lines
655 B
C
25 lines
655 B
C
/*
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* Copyright IBM Corp. 2021
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*
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* s390-tools is free software; you can redistribute it and/or modify
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* it under the terms of the MIT license. See LICENSE for details.
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*/
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#ifndef _HSAVMCORE_HSA_MEM_H
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#define _HSAVMCORE_HSA_MEM_H
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#include <stdbool.h>
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#include "hsa.h"
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/*
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* This concrete HSA memory reader reads the whole HSA memory from /proc/vmcore
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* and caches it all in an internal memory buffer.
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* In order for it to work, the system must provide enough memory or swap space.
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*/
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struct hsa_reader *make_hsa_mem_reader(const char *zcore_hsa_path,
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const char *vmcore_path, long hsa_size,
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bool release_hsa_flag);
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#endif
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