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[POWERPC] system call micro optimisation
authorAnton Blanchard <anton@samba.org>
Sat, 10 Jun 2006 15:15:55 +0000 (01:15 +1000)
committerPaul Mackerras <paulus@samba.org>
Thu, 15 Jun 2006 09:31:26 +0000 (19:31 +1000)
commitbd19c8994a828e70b5472f0ce9df5831c6c3db84
tree5462c6d574b995084aa9ed4472257851c4b6ad54tree | snapshot
parent9e6e3c2c796f1e0ef335804d5c87073e365dea50commit | diff
[POWERPC] system call micro optimisation

In the syscall path we currently have:

       crclr   so
       mfcr    r9

If we shift the crclr up we can avoid a stall on some CPUs.

Signed-off-by: Anton Blanchard <anton@samba.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
arch/powerpc/kernel/entry_64.S diff | blob | history
Beck SC1x5 Kernel