Merge branch 'parisc-3.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux

Pull parisc fix from Helge Deller:
 "This patch intentionally breaks the ABI on PARISC Linux!

  It assigns new numbers to SIGSTKFLT, SIGXCPU, SIGXFSZ and SIGSYS so
  that those are below 32 and thus leaves us with 32 RT signals like
  other Linux architectures (SIGRTMIN now becomes 32 instead of 37).

  Even if it breaks the ABI, it doesn't seem to have any visible impact
  on existing userspace applications.  I was able to mix new kernel
  and/or glibc without impacting normal bootup.  So, even if it breaks
  the ABI, the benefits (e.g.  being able to use systemd on PARISC
  Linux) outperforms the minimal (if any) impact it gives.

  The patch has been discussed on the parisc kernel mailing list and the
  coresponding glibc patch will be committed by the parisc glibc
  maintainer after this patch went into 3.18.

  Some more background information about this patch is in the commit
  message"

[ Side note: the "no regressions" rule has always been about *users*,
  not ABI's.  You can change ABI's all you like, until somebody actually
  notices.  At that point it gets reverted regardless of how good your
  reasons and excuses.

  And admittedly, with parisc, the distinct lack of many users makes
  that fairly unlikely anyway :^p    - Linus ]

* 'parisc-3.18-1' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Reduce SIGRTMIN from 37 to 32 to behave like other Linux architectures

1 files changed, 6 insertions, 10 deletions

diff --git a/arch/parisc/include/uapi/asm/signal.h b/arch/parisc/include/uapi/asm/signal.h
index f5645d6a89f2..10df7079f4cd 100644
--- a/arch/parisc/include/uapi/asm/signal.h
+++ b/arch/parisc/include/uapi/asm/signal.h
@@ -8,12 +8,12 @@
 #define SIGTRAP		 5
 #define SIGABRT		 6
 #define SIGIOT		 6
-#define SIGEMT		 7
+#define SIGSTKFLT	 7
 #define SIGFPE		 8
 #define SIGKILL		 9
 #define SIGBUS		10
 #define SIGSEGV		11
-#define SIGSYS		12 /* Linux doesn't use this */
+#define SIGXCPU		12
 #define SIGPIPE		13
 #define SIGALRM		14
 #define SIGTERM		15
@@ -32,16 +32,12 @@
 #define SIGTTIN		27
 #define SIGTTOU		28
 #define SIGURG		29
-#define SIGLOST		30 /* Linux doesn't use this either */
-#define	SIGUNUSED	31
-#define SIGRESERVE	SIGUNUSED
-
-#define SIGXCPU		33
-#define SIGXFSZ		34
-#define SIGSTKFLT	36
+#define SIGXFSZ		30
+#define SIGUNUSED	31
+#define SIGSYS		31 /* Linux doesn't use this */
 
 /* These should not be considered constants from userland.  */
-#define SIGRTMIN	37
+#define SIGRTMIN	32
 #define SIGRTMAX	_NSIG /* it's 44 under HP/UX */
 
 /*