[tip: locking/core] locking/refcount: Consolidate REFCOUNT_{MAX,SATURATED} definitions

[tip-bot2 for Will Deacon]

The following commit has been merged into the locking/core branch of tip:

Commit-ID:     65b008552469f1c37f5e06e0016924502e40b4f5
Gitweb:        https://git.kernel.org/tip/65b008552469f1c37f5e06e0016924502e40b4f5
Author:        Will Deacon <will@xxxxxxxxxx>
AuthorDate:    Thu, 21 Nov 2019 11:58:59 
Committer:     Ingo Molnar <mingo@xxxxxxxxxx>
CommitterDate: Mon, 25 Nov 2019 09:15:27 +01:00

locking/refcount: Consolidate REFCOUNT_{MAX,SATURATED} definitions

The definitions of REFCOUNT_MAX and REFCOUNT_SATURATED are the same,
regardless of CONFIG_REFCOUNT_FULL, so consolidate them into a single
pair of definitions.

Signed-off-by: Will Deacon <will@xxxxxxxxxx>
Reviewed-by: Ard Biesheuvel <ardb@xxxxxxxxxx>
Reviewed-by: Kees Cook <keescook@xxxxxxxxxxxx>
Tested-by: Hanjun Guo <guohanjun@xxxxxxxxxx>
Cc: Ard Biesheuvel <ard.biesheuvel@xxxxxxxxxx>
Cc: Elena Reshetova <elena.reshetova@xxxxxxxxx>
Cc: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx>
Cc: Peter Zijlstra <peterz@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Link: https://lkml.kernel.org/r/20191121115902.2551-8-will@xxxxxxxxxx
Signed-off-by: Ingo Molnar <mingo@xxxxxxxxxx>
---
 include/linux/refcount.h |  9 ++-------
 1 file changed, 2 insertions(+), 7 deletions(-)

diff --git a/include/linux/refcount.h b/include/linux/refcount.h
index 1cd0a87..757d463 100644
--- a/include/linux/refcount.h
+++ b/include/linux/refcount.h
@@ -22,6 +22,8 @@ typedef struct refcount_struct {
 } refcount_t;
 
 #define REFCOUNT_INIT(n)	{ .refs = ATOMIC_INIT(n), }
+#define REFCOUNT_MAX		INT_MAX
+#define REFCOUNT_SATURATED	(INT_MIN / 2)
 
 enum refcount_saturation_type {
 	REFCOUNT_ADD_NOT_ZERO_OVF,
@@ -57,9 +59,6 @@ static inline unsigned int refcount_read(const refcount_t *r)
 #ifdef CONFIG_REFCOUNT_FULL
 #include <linux/bug.h>
 
-#define REFCOUNT_MAX		INT_MAX
-#define REFCOUNT_SATURATED	(INT_MIN / 2)
-
 /*
  * Variant of atomic_t specialized for reference counts.
  *
@@ -300,10 +299,6 @@ static inline void refcount_dec(refcount_t *r)
 		refcount_warn_saturate(r, REFCOUNT_DEC_LEAK);
 }
 #else /* CONFIG_REFCOUNT_FULL */
-
-#define REFCOUNT_MAX		INT_MAX
-#define REFCOUNT_SATURATED	(INT_MIN / 2)
-
 # ifdef CONFIG_ARCH_HAS_REFCOUNT
 #  include <asm/refcount.h>
 # else