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Groups > linux.kernel > #1418381
| From | David Howells <dhowells@redhat.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [PATCH] bitmap_equal memcmp optimization for s390 |
| Date | 2016-06-09 16:30 +0200 |
| Message-ID | <rI985-7ym-17@gated-at.bofh.it> (permalink) |
| References | <rI985-7ym-19@gated-at.bofh.it> |
| Organization | Red Hat UK Ltd. Registered Address: Red Hat UK Ltd, Amberley Place, 107-111 Peascod Street, Windsor, Berkshire, SI4 1TE, United Kingdom. Registered in England and Wales under Company Registration No. 3798903 |
Martin Schwidefsky <schwidefsky@de.ibm.com> wrote: > I hesitate to put another CONFIG_S390 into common code, alternatively > __HAVE_ARCH_MEMCMP could be used. There are 7 architectures with the > define: arc, arm64, blackfin, frv, powerpc, s390 and sparc. > Of those I guess only powerpc, s390 and sparc will have configs with > (NR_CPUS > BITS_PER_LONG). For (NR_CPUS <= BITS_PER_LONG) the xor > optimization is used. FRV doesn't have __HAVE_ARCH_MEMCMP for __KERNEL__. David
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Re: [PATCH] bitmap_equal memcmp optimization for s390 David Howells <dhowells@redhat.com> - 2016-06-09 16:30 +0200 Re: [PATCH] bitmap_equal memcmp optimization for s390 Martin Schwidefsky <schwidefsky@de.ibm.com> - 2016-06-09 16:50 +0200
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