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

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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
This commit is contained in:
Linus Torvalds 2014-10-12 09:33:42 -04:00
commit d0ca47575a
1 changed files with 6 additions and 10 deletions
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16
arch/parisc/include/uapi/asm/signal.h
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@ -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 */
/*