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lindebugfs: Add debugfs_create_atomic_t()

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Reviewed by:	jfree
Approved by:	jfree
Differential Revision:	https://reviews.freebsd.org/D37915
This commit is contained in:
Jean-Sébastien Pédron 2022-12-30 11:00:57 +01:00
parent 15f0b8c309
commit f2044a3030
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GPG Key ID: 39E99761A5FD94CC
2 changed files with 32 additions and 0 deletions
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30
sys/compat/lindebugfs/lindebugfs.c
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@ -69,6 +69,7 @@ __FBSDID("$FreeBSD$");
#include <compat/linux/linux_util.h>
#include <fs/pseudofs/pseudofs.h>
#include <asm/atomic.h>
#include <linux/compat.h>
#include <linux/debugfs.h>
#include <linux/fs.h>
@ -424,6 +425,35 @@ debugfs_create_ulong(const char *name, umode_t mode, struct dentry *parent, unsi
}
static int
debugfs_atomic_t_get(void *data, uint64_t *value)
{
atomic_t *atomic_data = data;
*value = atomic_read(atomic_data);
return (0);
}
static int
debugfs_atomic_t_set(void *data, uint64_t value)
{
atomic_t *atomic_data = data;
atomic_set(atomic_data, (int)value);
return (0);
}
DEFINE_DEBUGFS_ATTRIBUTE(fops_atomic_t, debugfs_atomic_t_get, debugfs_atomic_t_set, "%d\n");
DEFINE_DEBUGFS_ATTRIBUTE(fops_atomic_t_ro, debugfs_atomic_t_get, NULL, "%d\n");
DEFINE_DEBUGFS_ATTRIBUTE(fops_atomic_t_wo, NULL, debugfs_atomic_t_set, "%d\n");
void
debugfs_create_atomic_t(const char *name, umode_t mode, struct dentry *parent, atomic_t *value)
{
debugfs_create_mode_unsafe(name, mode, parent, value, &fops_atomic_t,
&fops_atomic_t_ro, &fops_atomic_t_wo);
}
static ssize_t
fops_blob_read(struct file *filp, char __user *ubuf, size_t read_size, loff_t *ppos)
{

2
sys/compat/linuxkpi/common/include/linux/debugfs.h
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@ -84,6 +84,8 @@ void debugfs_create_u8(const char *name, umode_t mode, struct dentry *parent,
uint8_t *value);
void debugfs_create_ulong(const char *name, umode_t mode, struct dentry *parent,
unsigned long *value);
void debugfs_create_atomic_t(const char *name, umode_t mode, struct dentry *parent,
atomic_t *value);
struct dentry *debugfs_create_blob(const char *name, umode_t mode,
struct dentry *parent, struct debugfs_blob_wrapper *value);