Contributors: 11
| Author |
Tokens |
Token Proportion |
Commits |
Commit Proportion |
| Akinobu Mita |
165 |
63.46% |
2 |
15.38% |
| Dmitriy Monakhov |
37 |
14.23% |
1 |
7.69% |
| Jesper Dangaard Brouer |
29 |
11.15% |
1 |
7.69% |
| Qi Zheng |
14 |
5.38% |
1 |
7.69% |
| Viresh Kumar |
4 |
1.54% |
1 |
7.69% |
| Mel Gorman |
4 |
1.54% |
1 |
7.69% |
| Greg Kroah-Hartman |
3 |
1.15% |
2 |
15.38% |
| Joe Perches |
1 |
0.38% |
1 |
7.69% |
| Al Viro |
1 |
0.38% |
1 |
7.69% |
| Nicolas Boichat |
1 |
0.38% |
1 |
7.69% |
| Howard McLauchlan |
1 |
0.38% |
1 |
7.69% |
| Total |
260 |
|
13 |
|
// SPDX-License-Identifier: GPL-2.0
#include <linux/fault-inject.h>
#include <linux/slab.h>
#include <linux/mm.h>
#include "slab.h"
static struct {
struct fault_attr attr;
bool ignore_gfp_reclaim;
bool cache_filter;
} failslab = {
.attr = FAULT_ATTR_INITIALIZER,
.ignore_gfp_reclaim = true,
.cache_filter = false,
};
bool __should_failslab(struct kmem_cache *s, gfp_t gfpflags)
{
/* No fault-injection for bootstrap cache */
if (unlikely(s == kmem_cache))
return false;
if (gfpflags & __GFP_NOFAIL)
return false;
if (failslab.ignore_gfp_reclaim &&
(gfpflags & __GFP_DIRECT_RECLAIM))
return false;
if (failslab.cache_filter && !(s->flags & SLAB_FAILSLAB))
return false;
if (gfpflags & __GFP_NOWARN)
failslab.attr.no_warn = true;
return should_fail(&failslab.attr, s->object_size);
}
static int __init setup_failslab(char *str)
{
return setup_fault_attr(&failslab.attr, str);
}
__setup("failslab=", setup_failslab);
#ifdef CONFIG_FAULT_INJECTION_DEBUG_FS
static int __init failslab_debugfs_init(void)
{
struct dentry *dir;
umode_t mode = S_IFREG | 0600;
dir = fault_create_debugfs_attr("failslab", NULL, &failslab.attr);
if (IS_ERR(dir))
return PTR_ERR(dir);
debugfs_create_bool("ignore-gfp-wait", mode, dir,
&failslab.ignore_gfp_reclaim);
debugfs_create_bool("cache-filter", mode, dir,
&failslab.cache_filter);
return 0;
}
late_initcall(failslab_debugfs_init);
#endif /* CONFIG_FAULT_INJECTION_DEBUG_FS */