svn commit: r349276 - head/sys/compat/linuxkpi/common/include/asm

[Johannes Lundberg]

Author: johalun
Date: Fri Jun 21 16:43:16 2019
New Revision: 349276
URL: https://svnweb.freebsd.org/changeset/base/349276

Log:
  LinuxKPI: Add atomic_long_sub macro.
  
  Reviewed by:	imp (mentor), hps
  Approved by:	imp (mentor), hps
  MFC after:	1 week
  Differential Revision:	D20718

Modified:
  head/sys/compat/linuxkpi/common/include/asm/atomic-long.h

Modified: head/sys/compat/linuxkpi/common/include/asm/atomic-long.h
==============================================================================
--- head/sys/compat/linuxkpi/common/include/asm/atomic-long.h	Fri Jun 21 16:02:26 2019	(r349275)
+++ head/sys/compat/linuxkpi/common/include/asm/atomic-long.h	Fri Jun 21 16:43:16 2019	(r349276)
@@ -42,6 +42,7 @@ typedef struct {
 } atomic_long_t;
 
 #define	atomic_long_add(i, v)		atomic_long_add_return((i), (v))
+#define	atomic_long_sub(i, v)		atomic_long_add_return(-(i), (v))
 #define	atomic_long_inc_return(v)	atomic_long_add_return(1, (v))
 #define	atomic_long_inc_not_zero(v)	atomic_long_add_unless((v), 1, 0)