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/*
* Copyright IBM Corp. 2021
*
* s390-tools is free software; you can redistribute it and/or modify
* it under the terms of the MIT license. See LICENSE for details.
*/
#ifndef _HSAVMCORE_HSA_H
#define _HSAVMCORE_HSA_H
#include <stddef.h>
/*
* The interface to a HSA memory reader.
* This interface must be implemented by a concrete HSA memory reader.
*/
struct hsa_reader {
/* Total HSA memory size */
long hsa_size;
/* Offset of HSA memory in /proc/vmcore */
long hsa_vmcore_offset;
/* Destroys a concrete HSA memory reader */
void (*destroy)(struct hsa_reader *self);
/* Reads a HSA memory block given by offset and size */
int (*read_at)(struct hsa_reader *self, long offset, void *buf,
int size);
};
static inline long hsa_get_size(struct hsa_reader *self)
{
return self->hsa_size;
}
static inline long hsa_get_vmcore_offset(struct hsa_reader *self)
{
return self->hsa_vmcore_offset;
}
static inline void destroy_hsa_reader(struct hsa_reader *self)
{
self->destroy(self);
}
static inline int read_hsa_at(struct hsa_reader *self, long offset, void *buf,
int size)
{
return self->read_at(self, offset, buf, size);
}
/*
* Reads total HSA memory size from /sys/kernel/debug/zcore/hsa.
*/
long get_hsa_size(const char *zcore_hsa_path);
/*
* Returns the offset of HSA memory in /proc/vmcore.
*/
long get_hsa_vmcore_offset(const char *vmcore_path);
/*
* Releases HSA memory.
*/
int release_hsa(const char *zcore_hsa_path);
/*
* Returns a pointer to the enclosing struct which contains
* the variable pointed to by the given pointer as a member.
*/
#define container_of(ptr, type, member) \
({ \
const typeof(((type *)NULL)->member) *mptr = (ptr); \
(type *)((char *)mptr - offsetof(type, member)); \
})
#endif
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