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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>
28 lines
731 B
C
28 lines
731 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_FILE_H
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#define _HSAVMCORE_HSA_FILE_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 copies the whole HSA memory from /proc/vmcore
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* to a temporary file.
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* In order for it to work, the system must provide enough file storage.
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* The advantage of this reader is that it doesn't require extra memory for
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* caching.
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*/
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struct hsa_reader *make_hsa_file_reader(const char *zcore_hsa_path,
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const char *vmcore_path,
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const char *workdir_path, long hsa_size,
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bool release_hsa_flag);
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#endif
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