?? failslab.c
字號(hào):
#include <linux/fault-inject.h>static struct { struct fault_attr attr; u32 ignore_gfp_wait;#ifdef CONFIG_FAULT_INJECTION_DEBUG_FS struct dentry *ignore_gfp_wait_file;#endif} failslab = { .attr = FAULT_ATTR_INITIALIZER, .ignore_gfp_wait = 1,};bool should_failslab(size_t size, gfp_t gfpflags){ if (gfpflags & __GFP_NOFAIL) return false; if (failslab.ignore_gfp_wait && (gfpflags & __GFP_WAIT)) return false; return should_fail(&failslab.attr, size);}static int __init setup_failslab(char *str){ return setup_fault_attr(&failslab.attr, str);}__setup("failslab=", setup_failslab);#ifdef CONFIG_FAULT_INJECTION_DEBUG_FSstatic int __init failslab_debugfs_init(void){ mode_t mode = S_IFREG | S_IRUSR | S_IWUSR; struct dentry *dir; int err; err = init_fault_attr_dentries(&failslab.attr, "failslab"); if (err) return err; dir = failslab.attr.dentries.dir; failslab.ignore_gfp_wait_file = debugfs_create_bool("ignore-gfp-wait", mode, dir, &failslab.ignore_gfp_wait); if (!failslab.ignore_gfp_wait_file) { err = -ENOMEM; debugfs_remove(failslab.ignore_gfp_wait_file); cleanup_fault_attr_dentries(&failslab.attr); } return err;}late_initcall(failslab_debugfs_init);#endif /* CONFIG_FAULT_INJECTION_DEBUG_FS */?? 快捷鍵說明
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