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From: Ingo Molnar <mingo@kernel.org>
To: Peter Zijlstra <peterz@infradead.org>
Cc: Mark Rutland <mark.rutland@arm.com>,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, aryabinin@virtuozzo.com,
	boqun.feng@gmail.com, catalin.marinas@arm.com,
	dvyukov@google.com, will.deacon@arm.com
Subject: [PATCH] locking/atomics: Shorten the __atomic_op() defines to __op()
Date: Sat, 5 May 2018 12:48:58 +0200	[thread overview]
Message-ID: <20180505104858.ap4bfv6ip2vprzyj@gmail.com> (raw)
In-Reply-To: <20180505092911.GC12217@hirez.programming.kicks-ass.net>


* Peter Zijlstra <peterz@infradead.org> wrote:

> On Sat, May 05, 2018 at 11:09:03AM +0200, Ingo Molnar wrote:
> > > >  # ifndef atomic_fetch_dec_acquire
> > > >  #  define atomic_fetch_dec_acquire(...)	__atomic_op_acquire(atomic_fetch_dec, __VA_ARGS__)
> > > >  # endif
> > > >  # ifndef atomic_fetch_dec_release
> > > >  #  define atomic_fetch_dec_release(...)	__atomic_op_release(atomic_fetch_dec, __VA_ARGS__)
> > > >  # endif
> > > >  # ifndef atomic_fetch_dec
> > > >  #  define atomic_fetch_dec(...)		__atomic_op_fence(atomic_fetch_dec, __VA_ARGS__)
> > > >  # endif
> > > >  #endif
> > > > 
> > > > The new variant is readable at a glance, and the hierarchy of defines is very 
> > > > obvious as well.
> > > 
> > > It wraps and looks hideous in my normal setup. And I do detest that indent
> > > after # thing.
> > 
> > You should use wider terminals if you take a look at such code - there's already 
> > numerous areas of the kernel that are not readable on 80x25 terminals.
> > 
> > _Please_ try the following experiment, for me:
> > 
> > Enter the 21st century temporarily and widen two of your terminals from 80 cols to 
> > 100 cols - it's only ~20% wider.
> 
> Doesn't work that way. The only way I get more columns is if I shrink my
> font further. I work with tiles per monitor (left/right obv.) and use
> two columns per editor. This gets me a total of 4 columns.
> 
> On my desktop that is slightly over 100 characters per column, on my
> laptop that is slightly below 100 -- mostly because I'm pixel limited on
> fontsize on that thing (FullHD sucks).
> 
> If it wraps it wraps.

Out of the 707 lines in atomic.h only 25 are wider than 100 chars - and the max 
length is 104 chars.

If that's too then there's a few more things we could do - for example the 
attached patch renames a (very minor) misnomer to a shorter name and thus saves on 
the longest lines, the column histogram now looks like this:

    79 4
    80 7
    81 3
    82 9
    84 4
    85 2
    86 3
    87 1
    88 4
    89 13
    90 7
    91 20
    92 18
    93 12
    94 11
    96 5

I.e. the longest line is down to 96 columns, and 99% of the file is 94 cols or 
shorter.

Is this still too long?

Thanks,

	Ingo

============================>
From: Ingo Molnar <mingo@kernel.org>
Date: Sat, 5 May 2018 12:41:57 +0200
Subject: [PATCH] locking/atomics: Shorten the __atomic_op() defines to __op()

The __atomic prefix is somewhat of a misnomer, because not all
APIs we use with these macros have an atomic_ prefix.

This also reduces the length of the longest lines in the header,
making them more readable on PeterZ's terminals.

Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Cc: Paul E. McKenney <paulmck@us.ibm.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Will Deacon <will.deacon@arm.com>
Cc: aryabinin@virtuozzo.com
Cc: boqun.feng@gmail.com
Cc: catalin.marinas@arm.com
Cc: dvyukov@google.com
Cc: linux-arm-kernel@lists.infradead.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 include/linux/atomic.h | 204 +++++++++++++++++++++++++------------------------
 1 file changed, 103 insertions(+), 101 deletions(-)

diff --git a/include/linux/atomic.h b/include/linux/atomic.h
index 1176cf7c6f03..f32ff6d9e4d2 100644
--- a/include/linux/atomic.h
+++ b/include/linux/atomic.h
@@ -37,33 +37,35 @@
  * variant is already fully ordered, no additional barriers are needed.
  *
  * Besides, if an arch has a special barrier for acquire/release, it could
- * implement its own __atomic_op_* and use the same framework for building
+ * implement its own __op_* and use the same framework for building
  * variants
  *
- * If an architecture overrides __atomic_op_acquire() it will probably want
+ * If an architecture overrides __op_acquire() it will probably want
  * to define smp_mb__after_spinlock().
  */
-#ifndef __atomic_op_acquire
-#define __atomic_op_acquire(op, args...)				\
+#ifndef __op_acquire
+#define __op_acquire(op, args...)					\
 ({									\
 	typeof(op##_relaxed(args)) __ret  = op##_relaxed(args);		\
+									\
 	smp_mb__after_atomic();						\
 	__ret;								\
 })
 #endif
 
-#ifndef __atomic_op_release
-#define __atomic_op_release(op, args...)				\
+#ifndef __op_release
+#define __op_release(op, args...)					\
 ({									\
 	smp_mb__before_atomic();					\
 	op##_relaxed(args);						\
 })
 #endif
 
-#ifndef __atomic_op_fence
-#define __atomic_op_fence(op, args...)					\
+#ifndef __op_fence
+#define __op_fence(op, args...)						\
 ({									\
 	typeof(op##_relaxed(args)) __ret;				\
+									\
 	smp_mb__before_atomic();					\
 	__ret = op##_relaxed(args);					\
 	smp_mb__after_atomic();						\
@@ -77,9 +79,9 @@
 # define atomic_add_return_release		atomic_add_return
 #else
 # ifndef atomic_add_return
-#  define atomic_add_return(...)		__atomic_op_fence(atomic_add_return, __VA_ARGS__)
-#  define atomic_add_return_acquire(...)	__atomic_op_acquire(atomic_add_return, __VA_ARGS__)
-#  define atomic_add_return_release(...)	__atomic_op_release(atomic_add_return, __VA_ARGS__)
+#  define atomic_add_return(...)		__op_fence(atomic_add_return, __VA_ARGS__)
+#  define atomic_add_return_acquire(...)	__op_acquire(atomic_add_return, __VA_ARGS__)
+#  define atomic_add_return_release(...)	__op_release(atomic_add_return, __VA_ARGS__)
 # endif
 #endif
 
@@ -89,9 +91,9 @@
 # define atomic_inc_return_release		atomic_inc_return
 #else
 # ifndef atomic_inc_return
-#  define atomic_inc_return(...)		__atomic_op_fence(atomic_inc_return, __VA_ARGS__)
-#  define atomic_inc_return_acquire(...)	__atomic_op_acquire(atomic_inc_return, __VA_ARGS__)
-#  define atomic_inc_return_release(...)	__atomic_op_release(atomic_inc_return, __VA_ARGS__)
+#  define atomic_inc_return(...)		__op_fence(atomic_inc_return, __VA_ARGS__)
+#  define atomic_inc_return_acquire(...)	__op_acquire(atomic_inc_return, __VA_ARGS__)
+#  define atomic_inc_return_release(...)	__op_release(atomic_inc_return, __VA_ARGS__)
 # endif
 #endif
 
@@ -101,9 +103,9 @@
 # define atomic_sub_return_release		atomic_sub_return
 #else
 # ifndef atomic_sub_return
-#  define atomic_sub_return(...)		__atomic_op_fence(atomic_sub_return, __VA_ARGS__)
-#  define atomic_sub_return_acquire(...)	__atomic_op_acquire(atomic_sub_return, __VA_ARGS__)
-#  define atomic_sub_return_release(...)	__atomic_op_release(atomic_sub_return, __VA_ARGS__)
+#  define atomic_sub_return(...)		__op_fence(atomic_sub_return, __VA_ARGS__)
+#  define atomic_sub_return_acquire(...)	__op_acquire(atomic_sub_return, __VA_ARGS__)
+#  define atomic_sub_return_release(...)	__op_release(atomic_sub_return, __VA_ARGS__)
 # endif
 #endif
 
@@ -113,9 +115,9 @@
 # define atomic_dec_return_release		atomic_dec_return
 #else
 # ifndef atomic_dec_return
-#  define atomic_dec_return(...)		__atomic_op_fence(atomic_dec_return, __VA_ARGS__)
-#  define atomic_dec_return_acquire(...)	__atomic_op_acquire(atomic_dec_return, __VA_ARGS__)
-#  define atomic_dec_return_release(...)	__atomic_op_release(atomic_dec_return, __VA_ARGS__)
+#  define atomic_dec_return(...)		__op_fence(atomic_dec_return, __VA_ARGS__)
+#  define atomic_dec_return_acquire(...)	__op_acquire(atomic_dec_return, __VA_ARGS__)
+#  define atomic_dec_return_release(...)	__op_release(atomic_dec_return, __VA_ARGS__)
 # endif
 #endif
 
@@ -125,9 +127,9 @@
 # define atomic_fetch_add_release		atomic_fetch_add
 #else
 # ifndef atomic_fetch_add
-#  define atomic_fetch_add(...)			__atomic_op_fence(atomic_fetch_add, __VA_ARGS__)
-#  define atomic_fetch_add_acquire(...)		__atomic_op_acquire(atomic_fetch_add, __VA_ARGS__)
-#  define atomic_fetch_add_release(...)		__atomic_op_release(atomic_fetch_add, __VA_ARGS__)
+#  define atomic_fetch_add(...)			__op_fence(atomic_fetch_add, __VA_ARGS__)
+#  define atomic_fetch_add_acquire(...)		__op_acquire(atomic_fetch_add, __VA_ARGS__)
+#  define atomic_fetch_add_release(...)		__op_release(atomic_fetch_add, __VA_ARGS__)
 # endif
 #endif
 
@@ -144,9 +146,9 @@
 # endif
 #else
 # ifndef atomic_fetch_inc
-#  define atomic_fetch_inc(...)			__atomic_op_fence(atomic_fetch_inc, __VA_ARGS__)
-#  define atomic_fetch_inc_acquire(...)		__atomic_op_acquire(atomic_fetch_inc, __VA_ARGS__)
-#  define atomic_fetch_inc_release(...)		__atomic_op_release(atomic_fetch_inc, __VA_ARGS__)
+#  define atomic_fetch_inc(...)			__op_fence(atomic_fetch_inc, __VA_ARGS__)
+#  define atomic_fetch_inc_acquire(...)		__op_acquire(atomic_fetch_inc, __VA_ARGS__)
+#  define atomic_fetch_inc_release(...)		__op_release(atomic_fetch_inc, __VA_ARGS__)
 # endif
 #endif
 
@@ -156,9 +158,9 @@
 # define atomic_fetch_sub_release		atomic_fetch_sub
 #else
 # ifndef atomic_fetch_sub
-#  define atomic_fetch_sub(...)			__atomic_op_fence(atomic_fetch_sub, __VA_ARGS__)
-#  define atomic_fetch_sub_acquire(...)		__atomic_op_acquire(atomic_fetch_sub, __VA_ARGS__)
-#  define atomic_fetch_sub_release(...)		__atomic_op_release(atomic_fetch_sub, __VA_ARGS__)
+#  define atomic_fetch_sub(...)			__op_fence(atomic_fetch_sub, __VA_ARGS__)
+#  define atomic_fetch_sub_acquire(...)		__op_acquire(atomic_fetch_sub, __VA_ARGS__)
+#  define atomic_fetch_sub_release(...)		__op_release(atomic_fetch_sub, __VA_ARGS__)
 # endif
 #endif
 
@@ -175,9 +177,9 @@
 # endif
 #else
 # ifndef atomic_fetch_dec
-#  define atomic_fetch_dec(...)			__atomic_op_fence(atomic_fetch_dec, __VA_ARGS__)
-#  define atomic_fetch_dec_acquire(...)		__atomic_op_acquire(atomic_fetch_dec, __VA_ARGS__)
-#  define atomic_fetch_dec_release(...)		__atomic_op_release(atomic_fetch_dec, __VA_ARGS__)
+#  define atomic_fetch_dec(...)			__op_fence(atomic_fetch_dec, __VA_ARGS__)
+#  define atomic_fetch_dec_acquire(...)		__op_acquire(atomic_fetch_dec, __VA_ARGS__)
+#  define atomic_fetch_dec_release(...)		__op_release(atomic_fetch_dec, __VA_ARGS__)
 # endif
 #endif
 
@@ -187,9 +189,9 @@
 # define atomic_fetch_or_release		atomic_fetch_or
 #else
 # ifndef atomic_fetch_or
-#  define atomic_fetch_or(...)			__atomic_op_fence(atomic_fetch_or, __VA_ARGS__)
-#  define atomic_fetch_or_acquire(...)		__atomic_op_acquire(atomic_fetch_or, __VA_ARGS__)
-#  define atomic_fetch_or_release(...)		__atomic_op_release(atomic_fetch_or, __VA_ARGS__)
+#  define atomic_fetch_or(...)			__op_fence(atomic_fetch_or, __VA_ARGS__)
+#  define atomic_fetch_or_acquire(...)		__op_acquire(atomic_fetch_or, __VA_ARGS__)
+#  define atomic_fetch_or_release(...)		__op_release(atomic_fetch_or, __VA_ARGS__)
 # endif
 #endif
 
@@ -199,9 +201,9 @@
 # define atomic_fetch_and_release		atomic_fetch_and
 #else
 # ifndef atomic_fetch_and
-#  define atomic_fetch_and(...)			__atomic_op_fence(atomic_fetch_and, __VA_ARGS__)
-#  define atomic_fetch_and_acquire(...)		__atomic_op_acquire(atomic_fetch_and, __VA_ARGS__)
-#  define atomic_fetch_and_release(...)		__atomic_op_release(atomic_fetch_and, __VA_ARGS__)
+#  define atomic_fetch_and(...)			__op_fence(atomic_fetch_and, __VA_ARGS__)
+#  define atomic_fetch_and_acquire(...)		__op_acquire(atomic_fetch_and, __VA_ARGS__)
+#  define atomic_fetch_and_release(...)		__op_release(atomic_fetch_and, __VA_ARGS__)
 # endif
 #endif
 
@@ -211,9 +213,9 @@
 # define atomic_fetch_xor_release		atomic_fetch_xor
 #else
 # ifndef atomic_fetch_xor
-#  define atomic_fetch_xor(...)			__atomic_op_fence(atomic_fetch_xor, __VA_ARGS__)
-#  define atomic_fetch_xor_acquire(...)		__atomic_op_acquire(atomic_fetch_xor, __VA_ARGS__)
-#  define atomic_fetch_xor_release(...)		__atomic_op_release(atomic_fetch_xor, __VA_ARGS__)
+#  define atomic_fetch_xor(...)			__op_fence(atomic_fetch_xor, __VA_ARGS__)
+#  define atomic_fetch_xor_acquire(...)		__op_acquire(atomic_fetch_xor, __VA_ARGS__)
+#  define atomic_fetch_xor_release(...)		__op_release(atomic_fetch_xor, __VA_ARGS__)
 # endif
 #endif
 
@@ -223,9 +225,9 @@
 #define atomic_xchg_release			atomic_xchg
 #else
 # ifndef atomic_xchg
-#  define atomic_xchg(...)			__atomic_op_fence(atomic_xchg, __VA_ARGS__)
-#  define atomic_xchg_acquire(...)		__atomic_op_acquire(atomic_xchg, __VA_ARGS__)
-#  define atomic_xchg_release(...)		__atomic_op_release(atomic_xchg, __VA_ARGS__)
+#  define atomic_xchg(...)			__op_fence(atomic_xchg, __VA_ARGS__)
+#  define atomic_xchg_acquire(...)		__op_acquire(atomic_xchg, __VA_ARGS__)
+#  define atomic_xchg_release(...)		__op_release(atomic_xchg, __VA_ARGS__)
 # endif
 #endif
 
@@ -235,9 +237,9 @@
 # define atomic_cmpxchg_release			atomic_cmpxchg
 #else
 # ifndef atomic_cmpxchg
-#  define atomic_cmpxchg(...)			__atomic_op_fence(atomic_cmpxchg, __VA_ARGS__)
-#  define atomic_cmpxchg_acquire(...)		__atomic_op_acquire(atomic_cmpxchg, __VA_ARGS__)
-#  define atomic_cmpxchg_release(...)		__atomic_op_release(atomic_cmpxchg, __VA_ARGS__)
+#  define atomic_cmpxchg(...)			__op_fence(atomic_cmpxchg, __VA_ARGS__)
+#  define atomic_cmpxchg_acquire(...)		__op_acquire(atomic_cmpxchg, __VA_ARGS__)
+#  define atomic_cmpxchg_release(...)		__op_release(atomic_cmpxchg, __VA_ARGS__)
 # endif
 #endif
 
@@ -267,9 +269,9 @@
 # define cmpxchg_release			cmpxchg
 #else
 # ifndef cmpxchg
-#  define cmpxchg(...)				__atomic_op_fence(cmpxchg, __VA_ARGS__)
-#  define cmpxchg_acquire(...)			__atomic_op_acquire(cmpxchg, __VA_ARGS__)
-#  define cmpxchg_release(...)			__atomic_op_release(cmpxchg, __VA_ARGS__)
+#  define cmpxchg(...)				__op_fence(cmpxchg, __VA_ARGS__)
+#  define cmpxchg_acquire(...)			__op_acquire(cmpxchg, __VA_ARGS__)
+#  define cmpxchg_release(...)			__op_release(cmpxchg, __VA_ARGS__)
 # endif
 #endif
 
@@ -279,9 +281,9 @@
 # define cmpxchg64_release			cmpxchg64
 #else
 # ifndef cmpxchg64
-#  define cmpxchg64(...)			__atomic_op_fence(cmpxchg64, __VA_ARGS__)
-#  define cmpxchg64_acquire(...)		__atomic_op_acquire(cmpxchg64, __VA_ARGS__)
-#  define cmpxchg64_release(...)		__atomic_op_release(cmpxchg64, __VA_ARGS__)
+#  define cmpxchg64(...)			__op_fence(cmpxchg64, __VA_ARGS__)
+#  define cmpxchg64_acquire(...)		__op_acquire(cmpxchg64, __VA_ARGS__)
+#  define cmpxchg64_release(...)		__op_release(cmpxchg64, __VA_ARGS__)
 # endif
 #endif
 
@@ -291,9 +293,9 @@
 # define xchg_release				xchg
 #else
 # ifndef xchg
-#  define xchg(...)				__atomic_op_fence(xchg, __VA_ARGS__)
-#  define xchg_acquire(...)			__atomic_op_acquire(xchg, __VA_ARGS__)
-#  define xchg_release(...)			__atomic_op_release(xchg, __VA_ARGS__)
+#  define xchg(...)				__op_fence(xchg, __VA_ARGS__)
+#  define xchg_acquire(...)			__op_acquire(xchg, __VA_ARGS__)
+#  define xchg_release(...)			__op_release(xchg, __VA_ARGS__)
 # endif
 #endif
 
@@ -330,9 +332,9 @@ static inline int atomic_add_unless(atomic_t *v, int a, int u)
 # define atomic_fetch_andnot_release		atomic_fetch_andnot
 #else
 # ifndef atomic_fetch_andnot
-#  define atomic_fetch_andnot(...)		__atomic_op_fence(atomic_fetch_andnot, __VA_ARGS__)
-#  define atomic_fetch_andnot_acquire(...)	__atomic_op_acquire(atomic_fetch_andnot, __VA_ARGS__)
-#  define atomic_fetch_andnot_release(...)	__atomic_op_release(atomic_fetch_andnot, __VA_ARGS__)
+#  define atomic_fetch_andnot(...)		__op_fence(atomic_fetch_andnot, __VA_ARGS__)
+#  define atomic_fetch_andnot_acquire(...)	__op_acquire(atomic_fetch_andnot, __VA_ARGS__)
+#  define atomic_fetch_andnot_release(...)	__op_release(atomic_fetch_andnot, __VA_ARGS__)
 # endif
 #endif
 
@@ -472,9 +474,9 @@ static inline int atomic_dec_if_positive(atomic_t *v)
 # define atomic64_add_return_release		atomic64_add_return
 #else
 # ifndef atomic64_add_return
-#  define atomic64_add_return(...)		__atomic_op_fence(atomic64_add_return, __VA_ARGS__)
-#  define atomic64_add_return_acquire(...)	__atomic_op_acquire(atomic64_add_return, __VA_ARGS__)
-#  define atomic64_add_return_release(...)	__atomic_op_release(atomic64_add_return, __VA_ARGS__)
+#  define atomic64_add_return(...)		__op_fence(atomic64_add_return, __VA_ARGS__)
+#  define atomic64_add_return_acquire(...)	__op_acquire(atomic64_add_return, __VA_ARGS__)
+#  define atomic64_add_return_release(...)	__op_release(atomic64_add_return, __VA_ARGS__)
 # endif
 #endif
 
@@ -484,9 +486,9 @@ static inline int atomic_dec_if_positive(atomic_t *v)
 # define atomic64_inc_return_release		atomic64_inc_return
 #else
 # ifndef atomic64_inc_return
-#  define atomic64_inc_return(...)		__atomic_op_fence(atomic64_inc_return, __VA_ARGS__)
-#  define atomic64_inc_return_acquire(...)	__atomic_op_acquire(atomic64_inc_return, __VA_ARGS__)
-#  define atomic64_inc_return_release(...)	__atomic_op_release(atomic64_inc_return, __VA_ARGS__)
+#  define atomic64_inc_return(...)		__op_fence(atomic64_inc_return, __VA_ARGS__)
+#  define atomic64_inc_return_acquire(...)	__op_acquire(atomic64_inc_return, __VA_ARGS__)
+#  define atomic64_inc_return_release(...)	__op_release(atomic64_inc_return, __VA_ARGS__)
 # endif
 #endif
 
@@ -496,9 +498,9 @@ static inline int atomic_dec_if_positive(atomic_t *v)
 # define atomic64_sub_return_release		atomic64_sub_return
 #else
 # ifndef atomic64_sub_return
-#  define atomic64_sub_return(...)		__atomic_op_fence(atomic64_sub_return, __VA_ARGS__)
-#  define atomic64_sub_return_acquire(...)	__atomic_op_acquire(atomic64_sub_return, __VA_ARGS__)
-#  define atomic64_sub_return_release(...)	__atomic_op_release(atomic64_sub_return, __VA_ARGS__)
+#  define atomic64_sub_return(...)		__op_fence(atomic64_sub_return, __VA_ARGS__)
+#  define atomic64_sub_return_acquire(...)	__op_acquire(atomic64_sub_return, __VA_ARGS__)
+#  define atomic64_sub_return_release(...)	__op_release(atomic64_sub_return, __VA_ARGS__)
 # endif
 #endif
 
@@ -508,9 +510,9 @@ static inline int atomic_dec_if_positive(atomic_t *v)
 # define atomic64_dec_return_release		atomic64_dec_return
 #else
 # ifndef atomic64_dec_return
-#  define atomic64_dec_return(...)		__atomic_op_fence(atomic64_dec_return, __VA_ARGS__)
-#  define atomic64_dec_return_acquire(...)	__atomic_op_acquire(atomic64_dec_return, __VA_ARGS__)
-#  define atomic64_dec_return_release(...)	__atomic_op_release(atomic64_dec_return, __VA_ARGS__)
+#  define atomic64_dec_return(...)		__op_fence(atomic64_dec_return, __VA_ARGS__)
+#  define atomic64_dec_return_acquire(...)	__op_acquire(atomic64_dec_return, __VA_ARGS__)
+#  define atomic64_dec_return_release(...)	__op_release(atomic64_dec_return, __VA_ARGS__)
 # endif
 #endif
 
@@ -520,9 +522,9 @@ static inline int atomic_dec_if_positive(atomic_t *v)
 # define atomic64_fetch_add_release		atomic64_fetch_add
 #else
 # ifndef atomic64_fetch_add
-#  define atomic64_fetch_add(...)		__atomic_op_fence(atomic64_fetch_add, __VA_ARGS__)
-#  define atomic64_fetch_add_acquire(...)	__atomic_op_acquire(atomic64_fetch_add, __VA_ARGS__)
-#  define atomic64_fetch_add_release(...)	__atomic_op_release(atomic64_fetch_add, __VA_ARGS__)
+#  define atomic64_fetch_add(...)		__op_fence(atomic64_fetch_add, __VA_ARGS__)
+#  define atomic64_fetch_add_acquire(...)	__op_acquire(atomic64_fetch_add, __VA_ARGS__)
+#  define atomic64_fetch_add_release(...)	__op_release(atomic64_fetch_add, __VA_ARGS__)
 # endif
 #endif
 
@@ -539,9 +541,9 @@ static inline int atomic_dec_if_positive(atomic_t *v)
 # endif
 #else
 # ifndef atomic64_fetch_inc
-#  define atomic64_fetch_inc(...)		__atomic_op_fence(atomic64_fetch_inc, __VA_ARGS__)
-#  define atomic64_fetch_inc_acquire(...)	__atomic_op_acquire(atomic64_fetch_inc, __VA_ARGS__)
-#  define atomic64_fetch_inc_release(...)	__atomic_op_release(atomic64_fetch_inc, __VA_ARGS__)
+#  define atomic64_fetch_inc(...)		__op_fence(atomic64_fetch_inc, __VA_ARGS__)
+#  define atomic64_fetch_inc_acquire(...)	__op_acquire(atomic64_fetch_inc, __VA_ARGS__)
+#  define atomic64_fetch_inc_release(...)	__op_release(atomic64_fetch_inc, __VA_ARGS__)
 # endif
 #endif
 
@@ -551,9 +553,9 @@ static inline int atomic_dec_if_positive(atomic_t *v)
 # define atomic64_fetch_sub_release		atomic64_fetch_sub
 #else
 # ifndef atomic64_fetch_sub
-#  define atomic64_fetch_sub(...)		__atomic_op_fence(atomic64_fetch_sub, __VA_ARGS__)
-#  define atomic64_fetch_sub_acquire(...)	__atomic_op_acquire(atomic64_fetch_sub, __VA_ARGS__)
-#  define atomic64_fetch_sub_release(...)	__atomic_op_release(atomic64_fetch_sub, __VA_ARGS__)
+#  define atomic64_fetch_sub(...)		__op_fence(atomic64_fetch_sub, __VA_ARGS__)
+#  define atomic64_fetch_sub_acquire(...)	__op_acquire(atomic64_fetch_sub, __VA_ARGS__)
+#  define atomic64_fetch_sub_release(...)	__op_release(atomic64_fetch_sub, __VA_ARGS__)
 # endif
 #endif
 
@@ -570,9 +572,9 @@ static inline int atomic_dec_if_positive(atomic_t *v)
 # endif
 #else
 # ifndef atomic64_fetch_dec
-#  define atomic64_fetch_dec(...)		__atomic_op_fence(atomic64_fetch_dec, __VA_ARGS__)
-#  define atomic64_fetch_dec_acquire(...)	__atomic_op_acquire(atomic64_fetch_dec, __VA_ARGS__)
-#  define atomic64_fetch_dec_release(...)	__atomic_op_release(atomic64_fetch_dec, __VA_ARGS__)
+#  define atomic64_fetch_dec(...)		__op_fence(atomic64_fetch_dec, __VA_ARGS__)
+#  define atomic64_fetch_dec_acquire(...)	__op_acquire(atomic64_fetch_dec, __VA_ARGS__)
+#  define atomic64_fetch_dec_release(...)	__op_release(atomic64_fetch_dec, __VA_ARGS__)
 # endif
 #endif
 
@@ -582,9 +584,9 @@ static inline int atomic_dec_if_positive(atomic_t *v)
 # define atomic64_fetch_or_release		atomic64_fetch_or
 #else
 # ifndef atomic64_fetch_or
-#  define atomic64_fetch_or(...)		__atomic_op_fence(atomic64_fetch_or, __VA_ARGS__)
-#  define atomic64_fetch_or_acquire(...)	__atomic_op_acquire(atomic64_fetch_or, __VA_ARGS__)
-#  define atomic64_fetch_or_release(...)	__atomic_op_release(atomic64_fetch_or, __VA_ARGS__)
+#  define atomic64_fetch_or(...)		__op_fence(atomic64_fetch_or, __VA_ARGS__)
+#  define atomic64_fetch_or_acquire(...)	__op_acquire(atomic64_fetch_or, __VA_ARGS__)
+#  define atomic64_fetch_or_release(...)	__op_release(atomic64_fetch_or, __VA_ARGS__)
 # endif
 #endif
 
@@ -594,9 +596,9 @@ static inline int atomic_dec_if_positive(atomic_t *v)
 # define atomic64_fetch_and_release		atomic64_fetch_and
 #else
 # ifndef atomic64_fetch_and
-#  define atomic64_fetch_and(...)		__atomic_op_fence(atomic64_fetch_and, __VA_ARGS__)
-#  define atomic64_fetch_and_acquire(...)	__atomic_op_acquire(atomic64_fetch_and, __VA_ARGS__)
-#  define atomic64_fetch_and_release(...)	__atomic_op_release(atomic64_fetch_and, __VA_ARGS__)
+#  define atomic64_fetch_and(...)		__op_fence(atomic64_fetch_and, __VA_ARGS__)
+#  define atomic64_fetch_and_acquire(...)	__op_acquire(atomic64_fetch_and, __VA_ARGS__)
+#  define atomic64_fetch_and_release(...)	__op_release(atomic64_fetch_and, __VA_ARGS__)
 # endif
 #endif
 
@@ -606,9 +608,9 @@ static inline int atomic_dec_if_positive(atomic_t *v)
 # define atomic64_fetch_xor_release		atomic64_fetch_xor
 #else
 # ifndef atomic64_fetch_xor
-#  define atomic64_fetch_xor(...)		__atomic_op_fence(atomic64_fetch_xor, __VA_ARGS__)
-#  define atomic64_fetch_xor_acquire(...)	__atomic_op_acquire(atomic64_fetch_xor, __VA_ARGS__)
-#  define atomic64_fetch_xor_release(...)	__atomic_op_release(atomic64_fetch_xor, __VA_ARGS__)
+#  define atomic64_fetch_xor(...)		__op_fence(atomic64_fetch_xor, __VA_ARGS__)
+#  define atomic64_fetch_xor_acquire(...)	__op_acquire(atomic64_fetch_xor, __VA_ARGS__)
+#  define atomic64_fetch_xor_release(...)	__op_release(atomic64_fetch_xor, __VA_ARGS__)
 # endif
 #endif
 
@@ -618,9 +620,9 @@ static inline int atomic_dec_if_positive(atomic_t *v)
 # define atomic64_xchg_release			atomic64_xchg
 #else
 # ifndef atomic64_xchg
-#  define atomic64_xchg(...)			__atomic_op_fence(atomic64_xchg, __VA_ARGS__)
-#  define atomic64_xchg_acquire(...)		__atomic_op_acquire(atomic64_xchg, __VA_ARGS__)
-#  define atomic64_xchg_release(...)		__atomic_op_release(atomic64_xchg, __VA_ARGS__)
+#  define atomic64_xchg(...)			__op_fence(atomic64_xchg, __VA_ARGS__)
+#  define atomic64_xchg_acquire(...)		__op_acquire(atomic64_xchg, __VA_ARGS__)
+#  define atomic64_xchg_release(...)		__op_release(atomic64_xchg, __VA_ARGS__)
 # endif
 #endif
 
@@ -630,9 +632,9 @@ static inline int atomic_dec_if_positive(atomic_t *v)
 # define atomic64_cmpxchg_release		atomic64_cmpxchg
 #else
 # ifndef atomic64_cmpxchg
-#  define atomic64_cmpxchg(...)			__atomic_op_fence(atomic64_cmpxchg, __VA_ARGS__)
-#  define atomic64_cmpxchg_acquire(...)		__atomic_op_acquire(atomic64_cmpxchg, __VA_ARGS__)
-#  define atomic64_cmpxchg_release(...)		__atomic_op_release(atomic64_cmpxchg, __VA_ARGS__)
+#  define atomic64_cmpxchg(...)			__op_fence(atomic64_cmpxchg, __VA_ARGS__)
+#  define atomic64_cmpxchg_acquire(...)		__op_acquire(atomic64_cmpxchg, __VA_ARGS__)
+#  define atomic64_cmpxchg_release(...)		__op_release(atomic64_cmpxchg, __VA_ARGS__)
 # endif
 #endif
 
@@ -664,9 +666,9 @@ static inline int atomic_dec_if_positive(atomic_t *v)
 # define atomic64_fetch_andnot_release		atomic64_fetch_andnot
 #else
 # ifndef atomic64_fetch_andnot
-#  define atomic64_fetch_andnot(...)		__atomic_op_fence(atomic64_fetch_andnot, __VA_ARGS__)
-#  define atomic64_fetch_andnot_acquire(...)	__atomic_op_acquire(atomic64_fetch_andnot, __VA_ARGS__)
-#  define atomic64_fetch_andnot_release(...)	__atomic_op_release(atomic64_fetch_andnot, __VA_ARGS__)
+#  define atomic64_fetch_andnot(...)		__op_fence(atomic64_fetch_andnot, __VA_ARGS__)
+#  define atomic64_fetch_andnot_acquire(...)	__op_acquire(atomic64_fetch_andnot, __VA_ARGS__)
+#  define atomic64_fetch_andnot_release(...)	__op_release(atomic64_fetch_andnot, __VA_ARGS__)
 # endif
 #endif
 

  reply	other threads:[~2018-05-05 10:49 UTC|newest]

Thread overview: 61+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2018-05-04 17:39 [PATCH 0/6] arm64: add instrumented atomics Mark Rutland
2018-05-04 17:39 ` [PATCH 1/6] locking/atomic, asm-generic: instrument ordering variants Mark Rutland
2018-05-04 18:01   ` Peter Zijlstra
2018-05-04 18:09     ` Mark Rutland
2018-05-04 18:24       ` Peter Zijlstra
2018-05-05  9:12         ` Mark Rutland
2018-05-05  8:11       ` [PATCH] locking/atomics: Clean up the atomic.h maze of #defines Ingo Molnar
2018-05-05  8:36         ` [PATCH] locking/atomics: Simplify the op definitions in atomic.h some more Ingo Molnar
2018-05-05  8:54           ` [PATCH] locking/atomics: Combine the atomic_andnot() and atomic64_andnot() API definitions Ingo Molnar
2018-05-06 12:15             ` [tip:locking/core] " tip-bot for Ingo Molnar
2018-05-06 14:15             ` [PATCH] " Andrea Parri
2018-05-06 12:14           ` [tip:locking/core] locking/atomics: Simplify the op definitions in atomic.h some more tip-bot for Ingo Molnar
2018-05-09  7:33             ` Peter Zijlstra
2018-05-09 13:03               ` Will Deacon
2018-05-15  8:54                 ` Ingo Molnar
2018-05-15  8:35               ` Ingo Molnar
2018-05-15 11:41                 ` Peter Zijlstra
2018-05-15 12:13                   ` Peter Zijlstra
2018-05-15 15:43                   ` Mark Rutland
2018-05-15 17:10                     ` Peter Zijlstra
2018-05-15 17:53                       ` Mark Rutland
2018-05-15 18:11                         ` Peter Zijlstra
2018-05-15 18:15                           ` Peter Zijlstra
2018-05-15 18:52                             ` Linus Torvalds
2018-05-15 19:39                               ` Peter Zijlstra
2018-05-21 17:12                           ` Mark Rutland
2018-05-06 14:12           ` [PATCH] " Andrea Parri
2018-05-06 14:57             ` Ingo Molnar
2018-05-07  9:54               ` Andrea Parri
2018-05-18 18:43               ` Palmer Dabbelt
2018-05-05  8:47         ` [PATCH] locking/atomics: Clean up the atomic.h maze of #defines Peter Zijlstra
2018-05-05  9:04           ` Ingo Molnar
2018-05-05  9:24             ` Peter Zijlstra
2018-05-05  9:38             ` Ingo Molnar
2018-05-05 10:00               ` [RFC PATCH] locking/atomics/powerpc: Introduce optimized cmpxchg_release() family of APIs for PowerPC Ingo Molnar
2018-05-05 10:26                 ` Boqun Feng
2018-05-06  1:56                 ` Benjamin Herrenschmidt
2018-05-05 10:16               ` [PATCH] locking/atomics: Clean up the atomic.h maze of #defines Boqun Feng
2018-05-05 10:35                 ` [RFC PATCH] locking/atomics/powerpc: Clarify why the cmpxchg_relaxed() family of APIs falls back to full cmpxchg() Ingo Molnar
2018-05-05 11:28                   ` Boqun Feng
2018-05-05 13:27                     ` [PATCH] locking/atomics/powerpc: Move cmpxchg helpers to asm/cmpxchg.h and define the full set of cmpxchg APIs Ingo Molnar
2018-05-05 14:03                       ` Boqun Feng
2018-05-06 12:11                         ` Ingo Molnar
2018-05-07  1:04                           ` Boqun Feng
2018-05-07  6:50                             ` Ingo Molnar
2018-05-06 12:13                     ` [tip:locking/core] " tip-bot for Boqun Feng
2018-05-07 13:31                       ` [PATCH v2] " Boqun Feng
2018-05-05  9:05           ` [PATCH] locking/atomics: Clean up the atomic.h maze of #defines Dmitry Vyukov
2018-05-05  9:32             ` Peter Zijlstra
2018-05-07  6:43               ` [RFC PATCH] locking/atomics/x86/64: Clean up and fix details of <asm/atomic64_64.h> Ingo Molnar
2018-05-05  9:09           ` [PATCH] locking/atomics: Clean up the atomic.h maze of #defines Ingo Molnar
2018-05-05  9:29             ` Peter Zijlstra
2018-05-05 10:48               ` Ingo Molnar [this message]
2018-05-05 10:59                 ` [PATCH] locking/atomics: Shorten the __atomic_op() defines to __op() Ingo Molnar
2018-05-06 12:15                 ` [tip:locking/core] " tip-bot for Ingo Molnar
2018-05-06 12:14         ` [tip:locking/core] locking/atomics: Clean up the atomic.h maze of #defines tip-bot for Ingo Molnar
2018-05-04 17:39 ` [PATCH 2/6] locking/atomic, asm-generic: instrument atomic*andnot*() Mark Rutland
2018-05-04 17:39 ` [PATCH 3/6] arm64: use <linux/atomic.h> for cmpxchg Mark Rutland
2018-05-04 17:39 ` [PATCH 4/6] arm64: fix assembly constraints " Mark Rutland
2018-05-04 17:39 ` [PATCH 5/6] arm64: use instrumented atomics Mark Rutland
2018-05-04 17:39 ` [PATCH 6/6] arm64: instrument smp_{load_acquire,store_release} Mark Rutland

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