Date: Wed, 5 Aug 2015 21:58:33 +0000 (UTC) From: Alexander Motin <mav@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r286345 - head/sys/cam/ctl Message-ID: <201508052158.t75LwXYQ059160@repo.freebsd.org>
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Author: mav Date: Wed Aug 5 21:58:32 2015 New Revision: 286345 URL: https://svnweb.freebsd.org/changeset/base/286345 Log: Relax serialization of SYNCHRONIZE CACHE commands. Before this change SYNCHRONIZE CACHE commands were executed exclusively, as if they had ORDERED tag. But looking through SCSI specs I've found no any reason to be so strict. For reads this ordering seems pointless. For writes it looks less obvious, so I left ordering against preceeding write commands, while following ones are no longer required to wait. MFC after: 2 weeks Sponsored by: iXsystems, Inc. Modified: head/sys/cam/ctl/ctl_cmd_table.c head/sys/cam/ctl/ctl_private.h head/sys/cam/ctl/ctl_ser_table.c Modified: head/sys/cam/ctl/ctl_cmd_table.c ============================================================================== --- head/sys/cam/ctl/ctl_cmd_table.c Wed Aug 5 21:33:30 2015 (r286344) +++ head/sys/cam/ctl/ctl_cmd_table.c Wed Aug 5 21:58:32 2015 (r286345) @@ -785,8 +785,8 @@ const struct ctl_cmd_entry ctl_cmd_table {NULL, CTL_SERIDX_INVLD, CTL_CMD_FLAG_NONE, CTL_LUN_PAT_NONE}, /* 35 SYNCHRONIZE CACHE(10) */ -{ctl_sync_cache, CTL_SERIDX_START, CTL_CMD_FLAG_OK_ON_SLUN | - CTL_FLAG_DATA_NONE, +{ctl_sync_cache, CTL_SERIDX_SYNC, CTL_CMD_FLAG_OK_ON_SLUN | + CTL_FLAG_DATA_NONE, CTL_LUN_PAT_NONE, 10, {0, 0xff, 0xff, 0xff, 0xff, 0, 0xff, 0xff, 0x07}}, @@ -1138,8 +1138,8 @@ const struct ctl_cmd_entry ctl_cmd_table {NULL, CTL_SERIDX_INVLD, CTL_CMD_FLAG_NONE, CTL_LUN_PAT_NONE}, /* 91 SYNCHRONIZE CACHE(16) */ -{ctl_sync_cache, CTL_SERIDX_START, CTL_CMD_FLAG_OK_ON_SLUN | - CTL_FLAG_DATA_NONE, +{ctl_sync_cache, CTL_SERIDX_SYNC, CTL_CMD_FLAG_OK_ON_SLUN | + CTL_FLAG_DATA_NONE, CTL_LUN_PAT_NONE, 16, {0, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0xff, 0, 0x07}}, Modified: head/sys/cam/ctl/ctl_private.h ============================================================================== --- head/sys/cam/ctl/ctl_private.h Wed Aug 5 21:33:30 2015 (r286344) +++ head/sys/cam/ctl/ctl_private.h Wed Aug 5 21:58:32 2015 (r286345) @@ -141,6 +141,7 @@ typedef enum { CTL_SERIDX_READ, CTL_SERIDX_WRITE, CTL_SERIDX_UNMAP, + CTL_SERIDX_SYNC, CTL_SERIDX_MD_SNS, CTL_SERIDX_MD_SEL, CTL_SERIDX_RQ_SNS, Modified: head/sys/cam/ctl/ctl_ser_table.c ============================================================================== --- head/sys/cam/ctl/ctl_ser_table.c Wed Aug 5 21:33:30 2015 (r286344) +++ head/sys/cam/ctl/ctl_ser_table.c Wed Aug 5 21:58:32 2015 (r286345) @@ -63,19 +63,20 @@ static ctl_serialize_action ctl_serialize_table[CTL_SERIDX_COUNT][CTL_SERIDX_COUNT] = { -/**>IDX_ :: 2nd:TUR RD WRT UNM MDSN MDSL RQSN INQ RDCP RES LSNS FMT STR*/ -/*TUR */{ pS, pS, pS, pS, bK, bK, bK, pS, pS, bK, pS, bK, bK}, -/*READ */{ pS, xS, xT, bO, bK, bK, bK, pS, pS, bK, pS, bK, bK}, -/*WRITE */{ pS, xT, xT, bO, bK, bK, bK, pS, pS, bK, pS, bK, bK}, -/*UNMAP */{ pS, xO, xO, pS, bK, bK, bK, pS, pS, bK, pS, bK, bK}, -/*MD_SNS */{ bK, bK, bK, bK, pS, bK, bK, pS, pS, bK, pS, bK, bK}, -/*MD_SEL */{ bK, bK, bK, bK, bK, bK, bK, pS, pS, bK, pS, bK, bK}, -/*RQ_SNS */{ pS, pS, pS, pS, pS, pS, bK, pS, pS, bK, pS, bK, bK}, -/*INQ */{ pS, pS, pS, pS, pS, pS, bK, pS, pS, pS, pS, bK, bK}, -/*RD_CAP */{ pS, pS, pS, pS, pS, pS, bK, pS, pS, pS, pS, bK, pS}, -/*RES */{ bK, bK, bK, bK, bK, bK, bK, pS, bK, bK, bK, bK, bK}, -/*LOG_SNS */{ pS, pS, pS, pS, pS, bK, bK, pS, pS, bK, pS, bK, bK}, -/*FORMAT */{ pS, bK, bK, bK, bK, bK, pS, pS, bK, bK, bK, bK, bK}, -/*START */{ bK, bK, bK, bK, bK, bK, bK, pS, bK, bK, bK, bK, bK}, +/**>IDX_ :: 2nd:TUR RD WRT UNM SYN MDSN MDSL RQSN INQ RDCP RES LSNS FMT STR*/ +/*TUR */{ pS, pS, pS, pS, pS, bK, bK, bK, pS, pS, bK, pS, bK, bK}, +/*READ */{ pS, xS, xT, bO, pS, bK, bK, bK, pS, pS, bK, pS, bK, bK}, +/*WRITE */{ pS, xT, xT, bO, bO, bK, bK, bK, pS, pS, bK, pS, bK, bK}, +/*UNMAP */{ pS, xO, xO, pS, pS, bK, bK, bK, pS, pS, bK, pS, bK, bK}, +/*SYNC */{ pS, pS, pS, pS, pS, bK, bK, bK, pS, pS, bK, pS, bK, bK}, +/*MD_SNS */{ bK, bK, bK, bK, bK, pS, bK, bK, pS, pS, bK, pS, bK, bK}, +/*MD_SEL */{ bK, bK, bK, bK, bK, bK, bK, bK, pS, pS, bK, pS, bK, bK}, +/*RQ_SNS */{ pS, pS, pS, pS, pS, pS, pS, bK, pS, pS, bK, pS, bK, bK}, +/*INQ */{ pS, pS, pS, pS, pS, pS, pS, bK, pS, pS, pS, pS, bK, bK}, +/*RD_CAP */{ pS, pS, pS, pS, pS, pS, pS, bK, pS, pS, pS, pS, bK, pS}, +/*RES */{ bK, bK, bK, bK, bK, bK, bK, bK, pS, bK, bK, bK, bK, bK}, +/*LOG_SNS */{ pS, pS, pS, pS, pS, pS, bK, bK, pS, pS, bK, pS, bK, bK}, +/*FORMAT */{ pS, bK, bK, bK, bK, bK, bK, pS, pS, bK, bK, bK, bK, bK}, +/*START */{ bK, bK, bK, bK, bK, bK, bK, bK, pS, bK, bK, bK, bK, bK}, };
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