add new system file

hc

2024-02-20 102a0743326a03cd1a1202ceda21e175b7d3575c

 kernel/drivers/misc/lkdtm/refcount.c
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@@ -6,14 +6,6 @@
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 #include "lkdtm.h"
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 #include <linux/refcount.h>
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-#ifdef CONFIG_REFCOUNT_FULL
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-#define REFCOUNT_MAX		(UINT_MAX - 1)
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-#define REFCOUNT_SATURATED	UINT_MAX
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-#else
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-#define REFCOUNT_MAX		INT_MAX
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-#define REFCOUNT_SATURATED	(INT_MIN / 2)
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-#endif
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-
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 static void overflow_check(refcount_t *ref)
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 {
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 	switch (refcount_read(ref)) {
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@@ -127,7 +119,7 @@
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 static void check_negative(refcount_t *ref, int start)
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 {
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 	/*
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-	 * CONFIG_REFCOUNT_FULL refuses to move a refcount at all on an
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+	 * refcount_t refuses to move a refcount at all on an
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 	 * over-sub, so we have to track our starting position instead of
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 	 * looking only at zero-pinning.
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 	 */
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@@ -210,7 +202,6 @@
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 /*
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  * A refcount_inc() from zero should pin to zero or saturate and may WARN.
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- * Only CONFIG_REFCOUNT_FULL provides this protection currently.
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  */
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 void lkdtm_REFCOUNT_INC_ZERO(void)
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 {