mirror of https://gitee.com/openkylin/linux.git
mips: kernel: use DEFINE_DEBUGFS_ATTRIBUTE with debugfs_create_file_unsafe()
debugfs_create_file_unsafe does not protect the fops handed to it against file removal. DEFINE_DEBUGFS_ATTRIBUTE makes the fops aware of the file lifetime and thus protects it against removal. Signed-off-by: Wang Qing <wangqing@vivo.com> Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
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c6972fb9ba
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63d6c98168
arch/mips/kernel
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@ -35,7 +35,7 @@ static int ss_get(void *data, u64 *val)
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return 0;
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}
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DEFINE_SIMPLE_ATTRIBUTE(fops_ss, ss_get, NULL, "%llu\n");
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DEFINE_DEBUGFS_ATTRIBUTE(fops_ss, ss_get, NULL, "%llu\n");
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@ -114,13 +114,13 @@ static int multi_get(void *data, u64 *val)
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return 0;
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}
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DEFINE_SIMPLE_ATTRIBUTE(fops_multi, multi_get, NULL, "%llu\n");
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DEFINE_DEBUGFS_ATTRIBUTE(fops_multi, multi_get, NULL, "%llu\n");
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static int __init spinlock_test(void)
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{
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debugfs_create_file("spin_single", S_IRUGO, mips_debugfs_dir, NULL,
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debugfs_create_file_unsafe("spin_single", S_IRUGO, mips_debugfs_dir, NULL,
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&fops_ss);
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debugfs_create_file("spin_multi", S_IRUGO, mips_debugfs_dir, NULL,
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debugfs_create_file_unsafe("spin_multi", S_IRUGO, mips_debugfs_dir, NULL,
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&fops_multi);
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return 0;
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}
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