Revision 2d69708f9c08067735672908507894374bebb379 authored by Mauro Carvalho Chehab on 14 June 2018, 13:47:29 UTC, committed by Mauro Carvalho Chehab on 15 June 2018, 21:10:01 UTC
Now that the number of broken refs are smaller, improve the logic that gets rid of false-positives. Signed-off-by: Mauro Carvalho Chehab <mchehab+samsung@kernel.org> Acked-by: Jonathan Corbet <corbet@lwn.net>
1 parent e1f319f
debugfs.c
#include <linux/debugfs.h>
struct dentry *ras_debugfs_dir;
static atomic_t trace_count = ATOMIC_INIT(0);
int ras_userspace_consumers(void)
{
return atomic_read(&trace_count);
}
EXPORT_SYMBOL_GPL(ras_userspace_consumers);
static int trace_show(struct seq_file *m, void *v)
{
return atomic_read(&trace_count);
}
static int trace_open(struct inode *inode, struct file *file)
{
atomic_inc(&trace_count);
return single_open(file, trace_show, NULL);
}
static int trace_release(struct inode *inode, struct file *file)
{
atomic_dec(&trace_count);
return single_release(inode, file);
}
static const struct file_operations trace_fops = {
.open = trace_open,
.read = seq_read,
.llseek = seq_lseek,
.release = trace_release,
};
int __init ras_add_daemon_trace(void)
{
struct dentry *fentry;
if (!ras_debugfs_dir)
return -ENOENT;
fentry = debugfs_create_file("daemon_active", S_IRUSR, ras_debugfs_dir,
NULL, &trace_fops);
if (!fentry)
return -ENODEV;
return 0;
}
void __init ras_debugfs_init(void)
{
ras_debugfs_dir = debugfs_create_dir("ras", NULL);
}
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