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kernel add
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#ifndef __DEVCOREDUMP_H
#define __DEVCOREDUMP_H
#include <linux/device.h>
#include <linux/module.h>
#include <linux/vmalloc.h>
#ifdef CONFIG_DEV_COREDUMP
void dev_coredumpv(struct device *dev, const void *data, size_t datalen,
gfp_t gfp);
void dev_coredumpm(struct device *dev, struct module *owner,
const void *data, size_t datalen, gfp_t gfp,
ssize_t (*read)(char *buffer, loff_t offset, size_t count,
const void *data, size_t datalen),
void (*free)(const void *data));
#else
static inline void dev_coredumpv(struct device *dev, const void *data,
size_t datalen, gfp_t gfp)
{
vfree(data);
}
static inline void
dev_coredumpm(struct device *dev, struct module *owner,
const void *data, size_t datalen, gfp_t gfp,
ssize_t (*read)(char *buffer, loff_t offset, size_t count,
const void *data, size_t datalen),
void (*free)(const void *data))
{
free(data);
}
#endif /* CONFIG_DEV_COREDUMP */
#endif /* __DEVCOREDUMP_H */
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