On 05/31/2012 12:28 PM, Peter Butler wrote:
I have a system with SSE4.2 and thus hardware support for CRC32C calculations. I can manually load the crc32c_intel module, however when I do an lsmod I see: [root@peterFC16 ~]# lsmod | grep -E 'crc|sctp' crc32c_intel 12770 0 libcrc32c 12603 1 sctp sctp 203671 2 Does this mean that SCTP is not actually using the crc32c_intel module? If so, how do I remedy that?
What happens if you don't manually load crc32c_intel? Does it still show up in lsmod output?
I think you are already using it. libcrc32c doesn't do anything itself any more. It's a wrapper that's calling the crypto api to compute the checksum. Here it depends which crypto module it loads. It could load crc32c_intel or it could load crc32c_generic. If you see intel loaded, that's what you are using. If you see _generic loaded, then that's what's available.
-vlad
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