Christian Lamparter d7ae9928a2 crypto: crypto4xx - increase context and scatter ring buffer elements ... [ Upstream commit 778f81d6cdb7d25360f082ac0384d5103f04eca5 ] If crypto4xx is used in conjunction with dm-crypt, the available ring buffer elements are not enough to handle the load properly. On an aes-cbc-essiv:sha256 encrypted swap partition the read performance is abyssal: (tested with hdparm -t) /dev/mapper/swap_crypt: Timing buffered disk reads: 14 MB in 3.68 seconds = 3.81 MB/sec The patch increases both PPC4XX_NUM_SD and PPC4XX_NUM_PD to 256. This improves the performance considerably: /dev/mapper/swap_crypt: Timing buffered disk reads: 104 MB in 3.03 seconds = 34.31 MB/sec Furthermore, PPC4XX_LAST_SD, PPC4XX_LAST_GD and PPC4XX_LAST_PD can be easily calculated from their respective PPC4XX_NUM_* constant. Signed-off-by: Christian Lamparter <chunkeey@gmail.com> Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Sasha Levin <alexander.levin@verizon.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2017-12-25 14:22:14 +01:00
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crypto4xx_alg.c	crypto: crypto4xx - Staticize local symbols	2013-08-14 20:42:03 +10:00
crypto4xx_core.c	crypto: amcc - replace get_sg_count by sg_nents_for_len	2015-09-21 23:05:53 +08:00
crypto4xx_core.h	crypto: crypto4xx - increase context and scatter ring buffer elements	2017-12-25 14:22:14 +01:00
crypto4xx_reg_def.h	fix typos concerning "initiali[zs]e"	2010-06-16 18:05:05 +02:00
crypto4xx_sa.c	crypto: amcc - Remove unused function	2015-01-05 21:36:07 +11:00
crypto4xx_sa.h	Fix common misspellings	2011-03-31 11:26:23 -03:00
Makefile	crypto: Makefile - replace the use of <module>-objs with <module>-y	2010-10-19 20:52:26 +08:00