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Programming Interface Information:
This information is NOT intended to be used as Programming Interfaces of z/VM. |
TCMBK
Control Block Contents
TCMBK DSECT
Cross Reference (Contains links to field and bit definitions)
TCMBK Prolog
NAME : HCPTCMBK
DESCRIPTION: Full Track Cache Main Control Block
DSECT : TCMBK
FUNCTION : This block is used to keep track of global
information associated with the full track
caching including cache management and hash
table.
LOCATED BY : This DSECT overlays the data entry point
HCPTCMST.
CREATED BY : HCPTCM is loaded by the system during IPL.
The TCMBK is initialized by HCPFTHIN.
DELETED BY : Never deleted.
RELOCATION CONSIDERATIONS : None
TCMBK Control Block Content
TCMBK DSECT
Hex Dec Type/Val Lng Label (dup) Comments ---- ---- --------- ---- -------------- -------- 0000 0 Structure TCMBK Full Track Cache Main Control Block 0000 0 Bitstring 1 * (256) Skip prolog and align for cache Start of Assembler Version Frequently used fields are clustered at the start of this block for cache efficiency. 0100 256 Dbl-Word 8 * (0) Actual TCMBK data 0100 256 Signed 4 TCMTSLK Hash table/cache lock byte. Hierarchically above TCMPTELK. Also contains a footprint of the location in the module which last obtained or released lock. 0104 260 Address 1 TCMFLAGS Flag byte Bits in TCMFLAGS: 1... .... TCMCACHE X'80' Caching is enabled .1.. .... TCMTHUD X'40' Unconditional deletes allowed. ..1. .... TCMFSL X'20' Flag is set when the fair share limit was calculated last time in HCPSTP. Only calculate it every other time ...1 .... TCMDMDC X'10' User issued SET MDC or RETAIN XSTORE cmd to alter MDC XSTORE size. .... 1... TCMONDEF X'08' Deferred on is set, The cache will be turned on as soon as the last access of the cache is completed and the cache flushed. .... .1.. TCMSTLX X'04' XSTORE steal in progress .... ..1. TCMSTLM X'02' Main storage steal in progress 0105 261 Bitstring 1 TCMFLAG2 More TCMBK flag bits Bits in TCMFLAG2: 1... .... TCMHSHEX X'80' Hash table is in the process of expanding. No new inserts or track accesses are allowed during expansion, only track deletions are allowed until expansion is complete. .1.. .... TCMEFAIL X'40' Hash expansion failed during this 30 second interval ..1. .... TCMFLUSH X'20' Tells HCPFMVST to call HCPFMVFX when done. ...1 .... TCMMSEME X'10' MDC main storage steal has been called for an emergency main storage shortage condition within the last 60 second interval. 0106 262 Signed 2 TCMPRIME Prime number used in hash 0108 264 Address 4 TCMHMASK Mask to create address of 1st lvl index Hash table and values required to perform hash 00000004 TCMINISZ 4 Initial hash size TCMINISZ * 2**N = TCMMAXSZ (N is an integer) 00000040 TCMMAXSZ 64 Max first level indexes. See TCMINISZ for limits 010C 268 Bitstring 4 TCMIXMSK Mask for device tbl index See also TCHIXMSK ..11 1111 TCMIXTST X'3F' Mask for device tbl index 0110 272 Signed 4 TCMRDCT Count of successful read accesses to MDC records 0114 276 Signed 4 TCMIA IOs avoided by MDC hits 0118 280 Signed 4 TCMINOTA I/Os not avoided TCMIA + TCMINOTA = MDC eligible TCMALMSK and TCMALSHF are used to convert the TCHASPAC (address space selection) bits into a displacement into the ALET/STO array starting at TCMALET1. 011C 284 Bitstring 4 TCMALMSK Mask to isolate TCHASPAC bits i.e. AL1(0,0,0,TCHASPAC) 00000003 TCMALSHF 3 Used to SRL the isolated TCHASPAC bits to form a displacement from TCMALET1 The following ALET/STO pairs are mapped by MDAS DSECT Serialized by TCMPTELK and the TCMNEWAS lock when adding new address spaces. 0120 288 Signed 4 TCMALET1 ALET for 1st MDC address space 0124 292 Signed 4 TCMSTO1 STO for 1st MDC address space 0128 296 Signed 4 TCMALET2 ALET for 2nd MDC address space 012C 300 Signed 4 TCMSTO2 STO for 2nd MDC address space 0130 304 Signed 4 TCMALET3 ALET for 3rd MDC address space 0134 308 Signed 4 TCMSTO3 STO for 3rd MDC address space 0138 312 Signed 4 TCMALET4 ALET for 4th MDC address space 013C 316 Signed 4 TCMSTO4 STO for 4th MDC address space 0140 320 Address 4 TCMHPPT (64) First level index. Each word points to a hash segment (3 pages) 0000023C TCMEOIX *-4 Pointer to last possible hash table index 0000000A TCMPSHFT 10 Shift value used to split hashed key into segment ix and relative entry within the segment 0000000A TCMGPSHF 10 Number of TCHENTRYs per 3-page group, i.e. per entry in HCPHPPT, as a shift value (2**10=1024) 00000400 TCMTCHPG 1024 Number of TCHENTRYs per 3-page group, i.e. per entry in HCPHPPT. (2**TCMGPSHF) 0240 576 Address 2 TCMBSEGS Count base hash table segments 0242 578 Signed 2 * Reserved for IBM use The following are Full Track Cache Hash Table Performance Related Counters. 0244 580 Signed 4 TCMRDAB Count of times that read simulation was aborted 0248 584 Signed 4 TCMCOLPG Hash table collision pages. Actually HSHAV blocks. 024C 588 Signed 4 TCMINSCT Hash table insertions of new TCHBKs (aka the track insertion rate) 0250 592 Signed 4 TCMDELCT Count of cache TCHBK deletions 0254 596 Signed 4 TCMDELST Count of TCHBK deletes by the steal function 0258 600 Signed 4 TCMGCFRM Count of Garbage collected frms 025C 604 Signed 4 TCMCOLCT Hash table collisions on insertion of new item 0260 608 Signed 4 TCMPFCT Count of times page fault accessed track in cache 0264 612 Signed 4 TCMRDER Count of times that add of track to cache failed (due to i/o error etc ) 0268 616 Signed 4 TCMSTKRD Count of times a CPEBK was deferred on a track (reads) 026C 620 Signed 4 TCMSTKEX Count of times a CPEBK was deferred on a track (writes) 0270 624 Signed 4 TCMSTKPF Count of times a CPEBK was deferred on a track (page fault priority) 0274 628 Signed 4 TCMSTKUD Count of times an unconditional delete was deferred 0278 632 Signed 4 TCMEXCT Count of successfull excl. access to track 027C 636 Signed 4 TCMDCCT Count of times track deleted after excl. access 0280 640 Signed 4 TCMUDFST Count of fast unconditional deletes performed 0284 644 Signed 4 TCMUDMLT Count of cache unconditional delete requests (multi-track) 0288 648 Signed 4 TCMEFCT Hash expansion failure count 028C 652 Signed 4 TCMCPURG Count of times cache purged due to write link on another system in the SSI cluster End of Performance related counts. Next fields are for available TCHBK list management. and hash table expansion. 0290 656 Address 4 TCMAVLST Available list head. This is the anchor for the collision node (CNODE) available list. 0294 660 Address 4 TCMAVPAG Available pages (HSHAV blocks). Each block containing available list nodes is linked together. 0298 664 Address 4 TCMALTBK Alternate TCMBK, the alternate TCMBK is used during hash table expansion and will become the current one after expansion is complete. Below are values for the full track cache address space. 029C 668 Bitstring 1 TCMPTELK Lock for PTE sets and address space create. Also see the TCMNEWAS lock for A/S create. Hierarchically below TCMTSLK. If no MDC tasks are outstanding, TCMTSLK held is equivalent to holding both locks as no new work can start without the main cache lock. 029D 669 Bitstring 3 * Reserved for IBM use 02A0 672 Signed 4 TCMSEGTE Queue of available SEGTE sets 02A4 676 Address 4 TCMLASTA Address of last ALET/STO pair currently in use 02A8 680 Character 80 TCMPTES (0) Mapped by PTESET DSECT 02A8 680 Signed 4 TCMPTE8 (4) PTE subbks for 8 pages/track 02B8 696 Address 2 * Count of PTEs in this set 02BA 698 Address 2 * Max sets/page of size 8 02BC 700 Signed 4 TCMPTE10 (4) PTE subbks for 10 pages/track 02CC 716 Address 2 * Count of PTEs in this set 02CE 718 Address 2 * Max sets/page of size 10 02D0 720 Signed 4 TCMPTE12 (4) PTE subbks for 12 pages/track 02E0 736 Address 2 * Count of PTEs in this set 02E2 738 Address 2 * Max sets/page for size 12 02E4 740 Signed 4 TCMPTE14 (4) PTE subbks for 14 pages/track 02F4 756 Address 2 * Count of PTEs in this set 02F6 758 Address 2 * Max sets/page of size 14 02F8 760 Signed 2 TCMRDVID Next RDEV ID to give out Serialized by TCMTSLK. 02FA 762 Bitstring 2 TCMMAXID Maximum RDEV ID 02FC 764 Character 24 TCMASNAM 030D 781 Character 1 TCMASNUM Address space number 8 FBA pages make up a "track" in full track cache. With CKD it is known that if one page is referenced on a track, it is likely that others on that track will be referenced. This information is not known for FBA. Therefore we wanted to keep the number of pages per FBA track small. 00000040 TCMBKPTK 64 Number of FBA blocks per "track". MDC does not use blocks per cyclical group since a track would not necessarily be page-aligned. 00000008 TCMPGPTK 8 Number of pages needed to read in an FBA "track". 00000006 TCMFBSHF 6 Shift factor to determine FBA "track" number from an FBA block number. Thus 1 FBA track is 8 pages: 2**6=64, 64*512 bytes/block=32K 0314 788 Signed 4 TCMMNBLW Current number of pages in main storage < 2G being used as track cache pages 0318 792 Signed 4 TCMMNABV Current number of pages in main storage >= 2G being used as track cache pages 031C 796 Address 4 * Reserved for IBM use Main storage steal information. This information is mapped by SDDATA DSECT. 0320 800 Dbl-Word 8 TCMMDATA (0) Location of main storage steal information 0320 800 Bitstring 4 TCMMIDSZ Maximum allowable number of pages in track cache (based on average age of a page in DPA). AKA "ideal main store cache size", set by arbiter logic in HCPSTP. 0324 804 Signed 4 TCMMAIN Current number of pages in main storage being used as track cache pages. = TCMMNBLW+TCMMNABV 0328 808 Signed 4 TCMMNMIN Minimum number of main storage pages used by cache as set by user command 032C 812 Signed 4 TCMMNMAX Maximum number of main storage pages used by cache as set by user command 0330 816 Signed 4 TCMMNDL Number of main storage pages stolen from cache 0334 820 Signed 4 TCMSTLMN Number of times pages steal was invoked to steal main storage pages from the track cache 0338 824 Address 4 TCMMCPE Address of CPEBK to stack to invoke main storage steal 033C 828 Address 4 * Reserved for IBM use TCMSTFRM is used by MDC main storage steal to contain the address of the next FRMTE on the MDC cyclic list to be processed. 0340 832 Address 8 TCMSTFRM (0) 0340 832 Address 4 * Addr of next FRMTE to steal ... 0344 836 Address 4 * from for main storage steal TCMFRANC is the MDC cyclic list FRMTEs representing main storage frames used to hold user data in MDC. The 1st 2 dwords are a forward and backward ptr. The 3rd dword is 0 to represent a FRMTE without a FRMDCKEY. End of the queue is indicated by a pointer to this anchor. 0348 840 Address 8 TCMFRANC (0) Equivalent of 3 ADs follow 0348 840 Address 4 * High half 034C 844 Address 4 * Anchor for MDC FRMTEs - fwd ptr 0350 848 Address 4 * High half 0354 852 Address 4 * Anchor for MDC FRMTEs - back ptr 0358 856 Address 4 * Reserved/skipped in FRMTE def'n 035C 860 Address 4 * Represent a FRMTE w/o a FRMDCKEY XSTORE steal information. This information is mapped by SDDATA DSECT. 0360 864 Dbl-Word 8 TCMXDATA (0) Location of XSTORE steal information 0360 864 Bitstring 4 TCMXIDSZ Maximum allowable number of XSTORE blocks in track cache (based on avg age of XSTORE block). AKA "ideal xstore cache size", set by arbiter logic in HCPSTP. 0364 868 Signed 4 TCMXSTOR Number of cache pages that live on XSTORE 0368 872 Signed 4 TCMXSMIN Minimum number of XSTORE blocks used by cache as set by user command 036C 876 Signed 4 TCMXSMAX Maximum number of XSTORE blocks used by cache ase set by user command 0370 880 Signed 4 TCMXSTDL Number of XSTORE blocks stolen from track cache 0374 884 Signed 4 TCMSTLXS Number of times pages steal was invoked to steal XSTORE blocks from the track cache 0378 888 Address 4 TCMXCPE Address of CPEBK to stack to invoke Xstorage steal >>>> This field is not used. It is defined primarily >>>> to maintain the similar mapping of fields >>>> between the Storage and the XStorage sections. 037C 892 Address 4 * Reserved for IBM use 0380 896 Signed 4 TCMSTXTC Address of next TCHBK to steal from for XSTORE block steal 0384 900 Signed 4 TCMSTXHP Address of hash page currently stealing from for XSTORE block steal End of steal information. 0388 904 Signed 4 TCM2IO Number of times had to do both STD and non-STD I/O 038C 908 Signed 4 TCMKLNT0 Number of times key length was not 0 when doing STD I/O 0390 912 Signed 4 TCMDLBAD Number of times data length not consistent when doing standard I/O 0394 916 Signed 4 TCMBADR0 Number of times record 0's length was greater than X'10' 0398 920 Signed 4 TCMRCBAD Number of times records were not sequential when doing standard I/O 039C 924 Signed 4 TCMBADCC Number of times cylinder and head weren't the same for each record on track 03A0 928 Signed 4 TCMREADS Count of successful read channel programs simulated 03A4 932 Signed 4 TCMNOPTE Count of times we ran out of PTE sets 03A8 936 Signed 2 * Reserved for IBM use 03AA 938 Signed 2 TCMAXSCT Count of hash entries that need to be flushed but are currently active 03AC 940 Signed 4 TCMNOTEL Number of channel programs that were not eligible for channel program simulation 03B0 944 Signed 4 TCMFSHVM Number of fair share cache inserters during this fair share interval 03B4 948 Signed 4 TCMFSHIN Number of fair share track inserts during this fair share interval 03B8 952 Signed 4 TCMNFSVM Number of non-fair share cache inserters during this fair share interval 03BC 956 Signed 4 TCMNFSIN Number of non-fair share track inserts during this fair share interval 03C0 960 Signed 4 TCMFSLIM Fair share insert limit for this interval 03C4 964 Signed 4 TCMFSLMM Minimum fair share insert limit per interval 03C8 968 Signed 4 TCMSFSIN Smoothed previous number of fair share inserts 03CC 972 Signed 4 TCMSSMIN Smoothed previous number of all (both fair share and non-fair share) inserts 03D0 976 Signed 4 TCMFSLEX Count of tracks not inserted due to fair share limit 03D4 980 Signed 4 TCMTFBA Count of track inserts done with FBA channel prg 03D8 984 Signed 4 TCMTCKST Count of standard track inserts done with CKD channel program 03DC 988 Signed 4 TCMTCKNS Count of non-std track inserts done with CKD channel program 03E0 992 Signed 4 TCMTECST Count of standard track inserts done with ECKD channel program 03E4 996 Signed 4 TCMTECNS Count of non-std track inserts done with ECKD channel program 03E8 1000 Signed 4 TCMPIN4K Count of page faults resolved with 4K aligned PGIN for standard track 03EC 1004 Signed 4 TCMPOU4K Count of page faults resolved with 4K aligned PGOUT for standard track 03F0 1008 Signed 4 TCMPINVA Count of page faults resolved with PGIN to validate page for std track (non-4K case) 03F4 1012 Signed 4 TCMPSTRD Count of page faults resolved with read from DASD for std track 03F8 1016 Signed 4 TCMPSTWR Count of page faults requesting DASD write (which are ignored) 03FC 1020 Signed 4 TCMPFNS Count of page faults for non-standard tracks 0400 1024 Signed 4 TCMNOINS Count of track inserts rejected because user's insert capability off 0404 1028 Signed 4 * Reserved for IBM use 0408 1032 Dbl-Word 8 TCMONTOD Last time cache was enabled via SET MDC or RETAIN command. Cache is not necessarily active yet. 0410 1040 Dbl-Word 8 TCMOFTOD Last time cache was disabled via SET MDC command. Cache is not necessarily flushed yet. 0418 1048 Dbl-Word 8 TCMXSTOD Last time hash table expansion started successfully. 0420 1056 Dbl-Word 8 TCMXETOD Last time hash table expansion completed. 0428 1064 Dbl-Word 8 TCMQSTOD Last time hash table quiesce started. 0430 1072 Dbl-Word 8 TCMQETOD Last time hash table quiesce completed as TCMAXSCT went to zero. 0438 1080 Dbl-Word 8 TCMFLTOD Last time all the data in all the cache address spaces was flushed. I.E. the cache itself was flushed. 0440 1088 Dbl-Word 8 TCMATTOD Last time the cache was flushed for ATTACH XSTORE command. 0448 1096 Signed 4 TCMATRNG (2) Start and ending XSTORE block number for last ATTACH XSTORE flush. 0450 1104 Dbl-Word 8 TCMUDTOD Last time a range of tracks was deleted unconditionally. 0458 1112 Signed 4 TCMUDRNG (2) Starting hash key and number of hash keys associated with the last unconditional delete of a range of tracks. 0460 1120 Signed 4 TCMNEWAS Informal non-defer, non-spin lock used when allocating a new MDC address space. Must hold TCMPTELK to obtain. If new A/S is needed and this lock is non-zero, track insert must be aborted. 0464 1124 Bitstring 12 TCMNEWCO New address space creation communication area. Must hold TCMNEWAS to change or reference any field here. 0464 1124 Signed 4 TCMNWMDA MDAS address to use for creating the new address space. 0468 1128 Signed 4 TCMNWSTO STO for new address space. Also address of 1st STE-set. 046C 1132 Signed 4 TCMNWLST Last STE-set address. 0000008E TCMBKSIZ (*-TCMBK+7)/8 Size in double words
TCMBK Storage Layout
*** TCMBK - Full Track Cache Main Control Block
*
* +-------------------------------------------------------+
* 0 |///////////////////////////////////////////////////////|
* =///////////////////////////////////////////////////////=
* |///////////////////////////////////////////////////////|
* +---------------------------+------+------+-------------+
* 100 | TCMTSLK |:FLAGS|:FLAG2| TCMPRIME |
* +---------------------------+------+------+-------------+
* 108 | TCMHMASK | TCMIXMSK |
* +---------------------------+---------------------------+
* 110 | TCMRDCT | TCMIA |
* +---------------------------+---------------------------+
* 118 | TCMINOTA | TCMALMSK |
* +---------------------------+---------------------------+
* 120 | TCMALET1 | TCMSTO1 |
* +---------------------------+---------------------------+
* 128 | TCMALET2 | TCMSTO2 |
* +---------------------------+---------------------------+
* 130 | TCMALET3 | TCMSTO3 |
* +---------------------------+---------------------------+
* 138 | TCMALET4 | TCMSTO4 |
* +---------------------------+---------------------------+
* 140 | |
* = TCMHPPT =
* | |
* +-------------+-------------+---------------------------+
* 240 | TCMBSEGS |/////////////| TCMRDAB |
* +-------------+-------------+---------------------------+
* 248 | TCMCOLPG | TCMINSCT |
* +---------------------------+---------------------------+
* 250 | TCMDELCT | TCMDELST |
* +---------------------------+---------------------------+
* 258 | TCMGCFRM | TCMCOLCT |
* +---------------------------+---------------------------+
* 260 | TCMPFCT | TCMRDER |
* +---------------------------+---------------------------+
* 268 | TCMSTKRD | TCMSTKEX |
* +---------------------------+---------------------------+
* 270 | TCMSTKPF | TCMSTKUD |
* +---------------------------+---------------------------+
* 278 | TCMEXCT | TCMDCCT |
* +---------------------------+---------------------------+
* 280 | TCMUDFST | TCMUDMLT |
* +---------------------------+---------------------------+
* 288 | TCMEFCT | TCMCPURG |
* +---------------------------+---------------------------+
* 290 | TCMAVLST | TCMAVPAG |
* +---------------------------+------+--------------------+
* 298 | TCMALTBK |:PTELK|////////////////////|
* +---------------------------+------+--------------------+
* 2A0 | TCMSEGTE | TCMLASTA |
* +---------------------------+---------------------------+
* 2A8 | TCMPTE8 |
* | |
* +-------------+-------------+---------------------------+
* 2B8 |/////////////|/////////////| |
* +-------------+-------------+ |
* | TCMPTE10 |
* | +-------------+-------------+
* 2C8 | |/////////////|/////////////|
* +---------------------------+-------------+-------------+
* 2D0 | TCMPTE12 |
* | |
* +-------------+-------------+---------------------------+
* 2E0 |/////////////|/////////////| |
* +-------------+-------------+ |
* | TCMPTE14 |
* | +-------------+-------------+
* 2F0 | |/////////////|/////////////|
* +-------------+-------------+-------------+-------------+
* 2F8 | TCMRDVID | TCMMAXID | |
* +-------------+-------------+ |
* 300 | |
* = TCMASNAM =
* | +---------------------------+
* 310 | | TCMMNBLW |
* +---------------------------+---------------------------+
* 318 | TCMMNABV |///////////////////////////|
* +---------------------------+---------------------------+
* 320 | TCMMIDSZ | TCMMAIN |
* +---------------------------+---------------------------+
* 328 | TCMMNMIN | TCMMNMAX |
* +---------------------------+---------------------------+
* 330 | TCMMNDL | TCMSTLMN |
* +---------------------------+---------------------------+
* 338 | TCMMCPE |///////////////////////////|
* +---------------------------+---------------------------+
* 340 |///////////////////////////|///////////////////////////|
* +---------------------------+---------------------------+
* 348 |///////////////////////////|///////////////////////////|
* +---------------------------+---------------------------+
* 350 |///////////////////////////|///////////////////////////|
* +---------------------------+---------------------------+
* 358 |///////////////////////////|///////////////////////////|
* +---------------------------+---------------------------+
* 360 | TCMXIDSZ | TCMXSTOR |
* +---------------------------+---------------------------+
* 368 | TCMXSMIN | TCMXSMAX |
* +---------------------------+---------------------------+
* 370 | TCMXSTDL | TCMSTLXS |
* +---------------------------+---------------------------+
* 378 | TCMXCPE |///////////////////////////|
* +---------------------------+---------------------------+
* 380 | TCMSTXTC | TCMSTXHP |
* +---------------------------+---------------------------+
* 388 | TCM2IO | TCMKLNT0 |
* +---------------------------+---------------------------+
* 390 | TCMDLBAD | TCMBADR0 |
* +---------------------------+---------------------------+
* 398 | TCMRCBAD | TCMBADCC |
* +---------------------------+---------------------------+
* 3A0 | TCMREADS | TCMNOPTE |
* +-------------+-------------+---------------------------+
* 3A8 |/////////////| TCMAXSCT | TCMNOTEL |
* +-------------+-------------+---------------------------+
* 3B0 | TCMFSHVM | TCMFSHIN |
* +---------------------------+---------------------------+
* 3B8 | TCMNFSVM | TCMNFSIN |
* +---------------------------+---------------------------+
* 3C0 | TCMFSLIM | TCMFSLMM |
* +---------------------------+---------------------------+
* 3C8 | TCMSFSIN | TCMSSMIN |
* +---------------------------+---------------------------+
* 3D0 | TCMFSLEX | TCMTFBA |
* +---------------------------+---------------------------+
* 3D8 | TCMTCKST | TCMTCKNS |
* +---------------------------+---------------------------+
* 3E0 | TCMTECST | TCMTECNS |
* +---------------------------+---------------------------+
* 3E8 | TCMPIN4K | TCMPOU4K |
* +---------------------------+---------------------------+
* 3F0 | TCMPINVA | TCMPSTRD |
* +---------------------------+---------------------------+
* 3F8 | TCMPSTWR | TCMPFNS |
* +---------------------------+---------------------------+
* 400 | TCMNOINS |///////////////////////////|
* +---------------------------+---------------------------+
* 408 | TCMONTOD |
* +-------------------------------------------------------+
* 410 | TCMOFTOD |
* +-------------------------------------------------------+
* 418 | TCMXSTOD |
* +-------------------------------------------------------+
* 420 | TCMXETOD |
* +-------------------------------------------------------+
* 428 | TCMQSTOD |
* +-------------------------------------------------------+
* 430 | TCMQETOD |
* +-------------------------------------------------------+
* 438 | TCMFLTOD |
* +-------------------------------------------------------+
* 440 | TCMATTOD |
* +-------------------------------------------------------+
* 448 | TCMATRNG |
* +-------------------------------------------------------+
* 450 | TCMUDTOD |
* +-------------------------------------------------------+
* 458 | TCMUDRNG |
* +---------------------------+---------------------------+
* 460 | TCMNEWAS | TCMNEWCO |
* +---------------------------+ |
* | |
* +-------------------------------------------------------+
* 470
*
*** TCMBK - Full Track Cache Main Control Block
*** Overlay for TCMASNAM+17 in TCMBK
*
* +------+
* 308 ... 30D |:ASNUM| 30E
* +------+
*
*** Overlay for TCMASNAM+17 in TCMBK
*** Overlay for TCMNEWCO in TCMBK
*
* +---------------------------+
* 460 ... 464 | TCMNWMDA |
* +---------------------------+---------------------------+
* 468 | TCMNWSTO | TCMNWLST |
* +---------------------------+---------------------------+
* 470
*
*** Overlay for TCMNEWCO in TCMBK
TCMBK Cross Reference
Symbol Dspl Value -------------- ---- ----- TCMALET1 0120 TCMALET2 0128 TCMALET3 0130 TCMALET4 0138 TCMALMSK 011C TCMALSHF 011C 00000003 TCMALTBK 0298 TCMASNAM 02FC TCMASNUM 030D TCMATRNG 0448 TCMATTOD 0440 TCMAVLST 0290 TCMAVPAG 0294 TCMAXSCT 03AA TCMBADCC 039C TCMBADR0 0394 TCMBKPTK 030D 00000040 TCMBKSIZ 046C 0000008E TCMBSEGS 0240 TCMCACHE 0104 80 TCMCOLCT 025C TCMCOLPG 0248 TCMCPURG 028C TCMDCCT 027C TCMDELCT 0250 TCMDELST 0254 TCMDLBAD 0390 TCMDMDC 0104 10 TCMEFAIL 0105 40 TCMEFCT 0288 TCMEOIX 0140 0000023C TCMEXCT 0278 TCMFBSHF 030D 00000006 TCMFLAGS 0104 TCMFLAG2 0105 TCMFLTOD 0438 TCMFLUSH 0105 20 TCMFRANC 0348 TCMFSHIN 03B4 TCMFSHVM 03B0 TCMFSL 0104 20 TCMFSLEX 03D0 TCMFSLIM 03C0 TCMFSLMM 03C4 TCMGCFRM 0258 TCMGPSHF 0140 0000000A TCMHMASK 0108 TCMHPPT 0140 TCMHSHEX 0105 80 TCMIA 0114 TCMINISZ 0108 00000004 TCMINOTA 0118 TCMINSCT 024C TCMIXMSK 010C TCMIXTST 010C 3F TCMKLNT0 038C TCMLASTA 02A4 TCMMAIN 0324 TCMMAXID 02FA TCMMAXSZ 0108 00000040 TCMMCPE 0338 TCMMDATA 0320 TCMMIDSZ 0320 TCMMNABV 0318 TCMMNBLW 0314 TCMMNDL 0330 TCMMNMAX 032C TCMMNMIN 0328 TCMMSEME 0105 10 TCMNEWAS 0460 TCMNEWCO 0464 TCMNFSIN 03BC TCMNFSVM 03B8 TCMNOINS 0400 TCMNOPTE 03A4 TCMNOTEL 03AC TCMNWLST 046C TCMNWMDA 0464 TCMNWSTO 0468 TCMOFTOD 0410 TCMONDEF 0104 08 TCMONTOD 0408 TCMPFCT 0260 TCMPFNS 03FC TCMPGPTK 030D 00000008 TCMPINVA 03F0 TCMPIN4K 03E8 TCMPOU4K 03EC TCMPRIME 0106 TCMPSHFT 0140 0000000A TCMPSTRD 03F4 TCMPSTWR 03F8 TCMPTELK 029C TCMPTES 02A8 TCMPTE10 02BC TCMPTE12 02D0 TCMPTE14 02E4 TCMPTE8 02A8 TCMQETOD 0430 TCMQSTOD 0428 TCMRCBAD 0398 TCMRDAB 0244 TCMRDCT 0110 TCMRDER 0264 TCMRDVID 02F8 TCMREADS 03A0 TCMSEGTE 02A0 TCMSFSIN 03C8 TCMSSMIN 03CC TCMSTFRM 0340 TCMSTKEX 026C TCMSTKPF 0270 TCMSTKRD 0268 TCMSTKUD 0274 TCMSTLM 0104 02 TCMSTLMN 0334 TCMSTLX 0104 04 TCMSTLXS 0374 TCMSTO1 0124 TCMSTO2 012C TCMSTO3 0134 TCMSTO4 013C TCMSTXHP 0384 TCMSTXTC 0380 TCMTCHPG 0140 00000400 TCMTCKNS 03DC TCMTCKST 03D8 TCMTECNS 03E4 TCMTECST 03E0 TCMTFBA 03D4 TCMTHUD 0104 40 TCMTSLK 0100 TCMUDFST 0280 TCMUDMLT 0284 TCMUDRNG 0458 TCMUDTOD 0450 TCMXCPE 0378 TCMXDATA 0360 TCMXETOD 0420 TCMXIDSZ 0360 TCMXSMAX 036C TCMXSMIN 0368 TCMXSTDL 0370 TCMXSTOD 0418 TCMXSTOR 0364 TCM2IO 0388
Copyright IBM Corporation, 1990, 2011