diff options
Diffstat (limited to 'lib/fault-inject.c')
| -rw-r--r-- | lib/fault-inject.c | 29 |
1 files changed, 6 insertions, 23 deletions
diff --git a/lib/fault-inject.c b/lib/fault-inject.c index b4801f51b607..d7d501ea856d 100644 --- a/lib/fault-inject.c +++ b/lib/fault-inject.c @@ -5,7 +5,7 @@ #include <linux/stat.h> #include <linux/types.h> #include <linux/fs.h> -#include <linux/module.h> +#include <linux/export.h> #include <linux/interrupt.h> #include <linux/stacktrace.h> #include <linux/fault-inject.h> @@ -101,6 +101,10 @@ static inline bool fail_stacktrace(struct fault_attr *attr) bool should_fail(struct fault_attr *attr, ssize_t size) { + /* No need to check any other properties if the probability is 0 */ + if (attr->probability == 0) + return false; + if (attr->task_filter && !fail_task(attr, current)) return false; @@ -118,7 +122,7 @@ bool should_fail(struct fault_attr *attr, ssize_t size) return false; } - if (attr->probability <= random32() % 100) + if (attr->probability <= prandom_u32() % 100) return false; if (!fail_stacktrace(attr)) @@ -178,27 +182,6 @@ static struct dentry *debugfs_create_stacktrace_depth( #endif /* CONFIG_FAULT_INJECTION_STACKTRACE_FILTER */ -static int debugfs_atomic_t_set(void *data, u64 val) -{ - atomic_set((atomic_t *)data, val); - return 0; -} - -static int debugfs_atomic_t_get(void *data, u64 *val) -{ - *val = atomic_read((atomic_t *)data); - return 0; -} - -DEFINE_SIMPLE_ATTRIBUTE(fops_atomic_t, debugfs_atomic_t_get, - debugfs_atomic_t_set, "%lld\n"); - -static struct dentry *debugfs_create_atomic_t(const char *name, umode_t mode, - struct dentry *parent, atomic_t *value) -{ - return debugfs_create_file(name, mode, parent, value, &fops_atomic_t); -} - struct dentry *fault_create_debugfs_attr(const char *name, struct dentry *parent, struct fault_attr *attr) { |