Christian Lamparter 714abd2d69 crypto: crypto4xx - increase context and scatter ring buffer elements ... [ Upstream commit 778f81d6cd ] 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 14:26:25 +01:00
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Makefile	crypto4xx: integrate ppc4xx-rng into crypto4xx	2016-04-20 17:50:02 +08:00
crypto4xx_alg.c	…
crypto4xx_core.c	crypto: crypto4xx - fix an error code	2017-06-20 11:21:14 +08:00
crypto4xx_core.h	crypto: crypto4xx - increase context and scatter ring buffer elements	2017-12-25 14:26:25 +01:00
crypto4xx_reg_def.h	crypto: crypto4xx - rename ce_ring_contol to ce_ring_control	2017-04-24 18:11:06 +08:00
crypto4xx_sa.c	…
crypto4xx_sa.h	…
crypto4xx_trng.c	crypto4xx: integrate ppc4xx-rng into crypto4xx	2016-04-20 17:50:02 +08:00
crypto4xx_trng.h	crypto4xx: integrate ppc4xx-rng into crypto4xx	2016-04-20 17:50:02 +08:00