Root/
1 | #include <linux/fault-inject.h> |
2 | #include <linux/gfp.h> |
3 | |
4 | static struct { |
5 | struct fault_attr attr; |
6 | u32 ignore_gfp_wait; |
7 | #ifdef CONFIG_FAULT_INJECTION_DEBUG_FS |
8 | struct dentry *ignore_gfp_wait_file; |
9 | #endif |
10 | } failslab = { |
11 | .attr = FAULT_ATTR_INITIALIZER, |
12 | .ignore_gfp_wait = 1, |
13 | }; |
14 | |
15 | bool should_failslab(size_t size, gfp_t gfpflags) |
16 | { |
17 | if (gfpflags & __GFP_NOFAIL) |
18 | return false; |
19 | |
20 | if (failslab.ignore_gfp_wait && (gfpflags & __GFP_WAIT)) |
21 | return false; |
22 | |
23 | return should_fail(&failslab.attr, size); |
24 | } |
25 | |
26 | static int __init setup_failslab(char *str) |
27 | { |
28 | return setup_fault_attr(&failslab.attr, str); |
29 | } |
30 | __setup("failslab=", setup_failslab); |
31 | |
32 | #ifdef CONFIG_FAULT_INJECTION_DEBUG_FS |
33 | |
34 | static int __init failslab_debugfs_init(void) |
35 | { |
36 | mode_t mode = S_IFREG | S_IRUSR | S_IWUSR; |
37 | struct dentry *dir; |
38 | int err; |
39 | |
40 | err = init_fault_attr_dentries(&failslab.attr, "failslab"); |
41 | if (err) |
42 | return err; |
43 | dir = failslab.attr.dentries.dir; |
44 | |
45 | failslab.ignore_gfp_wait_file = |
46 | debugfs_create_bool("ignore-gfp-wait", mode, dir, |
47 | &failslab.ignore_gfp_wait); |
48 | |
49 | if (!failslab.ignore_gfp_wait_file) { |
50 | err = -ENOMEM; |
51 | debugfs_remove(failslab.ignore_gfp_wait_file); |
52 | cleanup_fault_attr_dentries(&failslab.attr); |
53 | } |
54 | |
55 | return err; |
56 | } |
57 | |
58 | late_initcall(failslab_debugfs_init); |
59 | |
60 | #endif /* CONFIG_FAULT_INJECTION_DEBUG_FS */ |
61 |
Branches:
ben-wpan
ben-wpan-stefan
javiroman/ks7010
jz-2.6.34
jz-2.6.34-rc5
jz-2.6.34-rc6
jz-2.6.34-rc7
jz-2.6.35
jz-2.6.36
jz-2.6.37
jz-2.6.38
jz-2.6.39
jz-3.0
jz-3.1
jz-3.11
jz-3.12
jz-3.13
jz-3.15
jz-3.16
jz-3.18-dt
jz-3.2
jz-3.3
jz-3.4
jz-3.5
jz-3.6
jz-3.6-rc2-pwm
jz-3.9
jz-3.9-clk
jz-3.9-rc8
jz47xx
jz47xx-2.6.38
master
Tags:
od-2011-09-04
od-2011-09-18
v2.6.34-rc5
v2.6.34-rc6
v2.6.34-rc7
v3.9