)]}' { "log": [ { "commit": "c10fde0d9e2112c25052a8742e893ec5965c0007", "tree": "8d0e3ad337e44e9e06caabd5f0667f27e9ddaca3", "parents": [ "dbd70fb499952d0ba282f0159dafacfc31d50313" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Thu Apr 17 07:46:13 2008 +0200" }, "committer": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Thu Apr 17 07:47:01 2008 +0200" }, "message": "[S390] Vertical cpu management.\n\nIf vertical cpu polarization is active then the hypervisor will\ndispatch certain cpus for a longer time than other cpus for maximum\nperformance. For example if a guest would have three virtual cpus,\neach of them with a share of 33 percent, then in case of vertical\ncpu polarization all of the processing time would be combined to a\nsingle cpu which would run all the time, while the other two cpus\nwould get nearly no cpu time.\n\nThere are three different types of vertical cpus: high, medium and\nlow. Low cpus hardly get any real cpu time, while high cpus get a\nfull real cpu. Medium cpus get something in between.\n\nIn order to switch between the two possible modes (default is\nhorizontal) a 0 for horizontal polarization or a 1 for vertical\npolarization must be written to the dispatching sysfs attribute:\n\n/sys/devices/system/cpu/dispatching\n\nThe polarization of each single cpu can be figured out by the\npolarization sysfs attribute of each cpu:\n\n/sys/devices/system/cpu/cpuX/polarization\n\nhorizontal, vertical:high, vertical:medium, vertical:low or unknown.\n\nWhen switching polarization the polarization attribute may contain\nthe value unknown until the configuration change is done and the\nkernel has figured out the new polarization of each cpu.\n\nNote that running a system with different types of vertical cpus may\nresult in significant performance regressions. If possible only one\ntype of vertical cpus should be used. All other cpus should be\nofflined.\n\nSigned-off-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\n" }, { "commit": "dbd70fb499952d0ba282f0159dafacfc31d50313", "tree": "317ff61d9a98e61f233ac88950f7d9a3d3067965", "parents": [ "7b758389a29cb7f456ec2d27b7a08cb3cc4e1f1c" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Thu Apr 17 07:46:12 2008 +0200" }, "committer": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Thu Apr 17 07:47:01 2008 +0200" }, "message": "[S390] cpu topology support for s390.\n\nAdd s390 backend so we can give the scheduler some hints about the\ncpu topology.\n\nSigned-off-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\n" }, { "commit": "dab5209cd878c146d9f6923f061d1c2725ff210f", "tree": "4b6bae43bc7050c11efb526ad1f535deba95726c", "parents": [ "7dc1da9ffae5a344f7115d019e2be069d3e1bb8d" ], "author": { "name": "Carsten Otte", "email": "cotte@de.ibm.com", "time": "Sat Jan 26 14:11:27 2008 +0100" }, "committer": { "name": "Martin Schwidefsky", "email": "schwidefsky@de.ibm.com", "time": "Sat Jan 26 14:11:31 2008 +0100" }, "message": "[S390] add smp_call_function_mask\n\nThis patch adds the s390 variant for smp_call_function_mask(). The\nimplementation is pretty straight forward using the wrapper\n__smp_call_function_map() which already takes a cpumask_t argument.\n\nSigned-off-by: Carsten Otte \u003ccotte@de.ibm.com\u003e\nSigned-off-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\n" }, { "commit": "48483b3290988952a593c6e66ca354c19f1a4350", "tree": "b2b11f14a2ca1a49fe61752064c8897d478536fb", "parents": [ "519580fc179be6d06a40edd918747bd5f0e1b899" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Sat Jan 26 14:11:05 2008 +0100" }, "committer": { "name": "Martin Schwidefsky", "email": "schwidefsky@de.ibm.com", "time": "Sat Jan 26 14:11:15 2008 +0100" }, "message": "[S390] Get rid of additional_cpus kernel parameter.\n\nIt caused only a lot of confusion. From now on cpu hotplug of up to\nNR_CPUS will work by default. If somebody wants to limit that then\nthe possible_cpus parameter can be used.\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nSigned-off-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\n" }, { "commit": "3bb447fc8bb6523cb1cec7a0277d831a2b0462b7", "tree": "e5f11fda2ff91d5670f1c046b53a12b4dbef55aa", "parents": [ "d941cf5e373c356723fa648b9f0302a11c9b1770" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Fri Jul 27 12:29:08 2007 +0200" }, "committer": { "name": "Martin Schwidefsky", "email": "schwidefsky@de.ibm.com", "time": "Fri Jul 27 12:29:17 2007 +0200" }, "message": "[S390] Convert to smp_call_function_single.\n\nsmp_call_function_single now has the same semantics as s390\u0027s\nsmp_call_function_on. Therefore convert to the *single variant\nand get rid of some architecture specific code.\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nSigned-off-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\n" }, { "commit": "2f4dfe206a2fc07099dfad77a8ea2f4b4ae2140f", "tree": "b66a624ba68766282fa0ddb509ff641552703da4", "parents": [ "dd2a345f8f002845636dbf5d2d768bb5cd8a5f59" ], "author": { "name": "Fernando Luis Vazquez Cao", "email": "fernando@oss.ntt.co.jp", "time": "Wed May 09 02:33:25 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Wed May 09 12:30:48 2007 -0700" }, "message": "Remove hardcoding of hard_smp_processor_id on UP systems\n\nWith the advent of kdump, the assumption that the boot CPU when booting an UP\nkernel is always the CPU with a particular hardware ID (often 0) (usually\nreferred to as BSP on some architectures) is not valid anymore. The reason\nbeing that the dump capture kernel boots on the crashed CPU (the CPU that\ninvoked crash_kexec), which may be or may not be that particular CPU.\n\nMove definition of hard_smp_processor_id for the UP case to\narchitecture-specific code (\"asm/smp.h\") where it belongs, so that each\narchitecture can provide its own implementation.\n\nSigned-off-by: Fernando Luis Vazquez Cao \u003cfernando@oss.ntt.co.jp\u003e\nCc: \"Luck, Tony\" \u003ctony.luck@intel.com\u003e\nAcked-by: Andi Kleen \u003cak@suse.de\u003e\nCc: \"Eric W. Biederman\" \u003cebiederm@xmission.com\u003e\nCc: Vivek Goyal \u003cvgoyal@in.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "39ce010d38bf6703b49f59eb73bef030b1d659f2", "tree": "76a0ca6ba8289644def45c30d214dd7d8b2921a4", "parents": [ "9ff6f4577e69801a43c0d58606a80040aecbc4bc" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Fri Apr 27 16:02:00 2007 +0200" }, "committer": { "name": "Martin Schwidefsky", "email": "schwidefsky@de.ibm.com", "time": "Fri Apr 27 16:01:47 2007 +0200" }, "message": "[S390] Clean up smp code in preparation for some larger changes.\n\nSigned-off-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\n" }, { "commit": "411ed3225733dbd83b4cbaaa992ef80d6ec1534e", "tree": "388aeac39e9fad5f7cadcc8fcbf0838811f5829d", "parents": [ "7039d3a11c4b4b59f9ef933b4b0a28304bdd07d1" ], "author": { "name": "Michael Holzheu", "email": "holzheu@de.ibm.com", "time": "Fri Apr 27 16:01:49 2007 +0200" }, "committer": { "name": "Martin Schwidefsky", "email": "schwidefsky@de.ibm.com", "time": "Fri Apr 27 16:01:44 2007 +0200" }, "message": "[S390] zfcpdump support.\n\ns390 machines provide hardware support for creating Linux dumps on SCSI\ndisks. For creating a dump a special purpose dump Linux is used. The first\n32 MB of memory are saved by the hardware before the dump Linux is\nbooted. Via an SCLP interface, the saved memory can be accessed from\nLinux. This patch exports memory and registers of the crashed Linux to\nuserspace via a debugfs file. For more information refer to\nDocumentation/s390/zfcpdump.txt, which is included in this patch.\n\nSigned-off-by: Michael Holzheu \u003cholzheu@de.ibm.com\u003e\nSigned-off-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\n" }, { "commit": "c1821c2e9711adc3cd298a16b7237c92a2cee78d", "tree": "9155b089db35a37d95863125ea4c5f918bd7801b", "parents": [ "86aa9fc2456d8a662f299a70bdb70987209170f0" ], "author": { "name": "Gerald Schaefer", "email": "geraldsc@de.ibm.com", "time": "Mon Feb 05 21:18:17 2007 +0100" }, "committer": { "name": "Martin Schwidefsky", "email": "schwidefsky@de.ibm.com", "time": "Mon Feb 05 21:18:17 2007 +0100" }, "message": "[S390] noexec protection\n\nThis provides a noexec protection on s390 hardware. Our hardware does\nnot have any bits left in the pte for a hw noexec bit, so this is a\ndifferent approach using shadow page tables and a special addressing\nmode that allows separate address spaces for code and data.\n\nAs a special feature of our \"secondary-space\" addressing mode, separate\npage tables can be specified for the translation of data addresses\n(storage operands) and instruction addresses. The shadow page table is\nused for the instruction addresses and the standard page table for the\ndata addresses.\nThe shadow page table is linked to the standard page table by a pointer\nin page-\u003elru.next of the struct page corresponding to the page that\ncontains the standard page table (since page-\u003eprivate is not really\nprivate with the pte_lock and the page table pages are not in the LRU\nlist).\nDepending on the software bits of a pte, it is either inserted into\nboth page tables or just into the standard (data) page table. Pages of\na vma that does not have the VM_EXEC bit set get mapped only in the\ndata address space. Any try to execute code on such a page will cause a\npage translation exception. The standard reaction to this is a SIGSEGV\nwith two exceptions: the two system call opcodes 0x0a77 (sys_sigreturn)\nand 0x0aad (sys_rt_sigreturn) are allowed. They are stored by the\nkernel to the signal stack frame. Unfortunately, the signal return\nmechanism cannot be modified to use an SA_RESTORER because the\nexception unwinding code depends on the system call opcode stored\nbehind the signal stack frame.\n\nThis feature requires that user space is executed in secondary-space\nmode and the kernel in home-space mode, which means that the addressing\nmodes need to be switched and that the noexec protection only works\nfor user space.\nAfter switching the addressing modes, we cannot use the mvcp/mvcs\ninstructions anymore to copy between kernel and user space. A new\nmvcos instruction has been added to the z9 EC/BC hardware which allows\nto copy between arbitrary address spaces, but on older hardware the\npage tables need to be walked manually.\n\nSigned-off-by: Gerald Schaefer \u003cgeraldsc@de.ibm.com\u003e\nSigned-off-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\n" }, { "commit": "2b67fc46061b2171fb8fbb55d1ac717abd533569", "tree": "d4e9db6e7d51d2fc3cf782bf11e24ed7fbc544a0", "parents": [ "55dff5224abeb734b12c1661c34ccf534955bee7" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Mon Feb 05 21:16:47 2007 +0100" }, "committer": { "name": "Martin Schwidefsky", "email": "schwidefsky@de.ibm.com", "time": "Mon Feb 05 21:16:47 2007 +0100" }, "message": "[S390] Get rid of a lot of sparse warnings.\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nSigned-off-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\n" }, { "commit": "c6b5b847a7cf11f131c43fe0041443ec11697fc7", "tree": "d15fb7302bd446394ab373128be0a77826566e30", "parents": [ "740b5706b9c4b3767f597b3ea76654c6f2a800b2" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Mon Dec 04 15:40:33 2006 +0100" }, "committer": { "name": "Martin Schwidefsky", "email": "schwidefsky@de.ibm.com", "time": "Mon Dec 04 15:40:33 2006 +0100" }, "message": "[S390] cpu shutdown rework\n\nLet one master cpu kill all other cpus instead of sending an external\ninterrupt to all other cpus so they can kill themselves.\nSimplifies reipl/shutdown functions a lot.\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nSigned-off-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\n" }, { "commit": "94c12cc7d196bab34aaa98d38521549fa1e5ef76", "tree": "8e0cec0ed44445d74a2cb5160303d6b4dfb1bc31", "parents": [ "25d83cbfaa44e1b9170c0941c3ef52ca39f54ccc" ], "author": { "name": "Martin Schwidefsky", "email": "schwidefsky@de.ibm.com", "time": "Thu Sep 28 16:56:43 2006 +0200" }, "committer": { "name": "Martin Schwidefsky", "email": "schwidefsky@de.ibm.com", "time": "Thu Sep 28 16:56:43 2006 +0200" }, "message": "[S390] Inline assembly cleanup.\n\nMajor cleanup of all s390 inline assemblies. They now have a common\ncoding style. Quite a few have been shortened, mainly by using register\nasm variables. Use of the EX_TABLE macro helps as well. The atomic ops,\nbit ops and locking inlines new use the Q-constraint if a newer gcc\nis used. That results in slightly better code.\n\nThanks to Christian Borntraeger for proof reading the changes.\n\nSigned-off-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\n" }, { "commit": "39b083fe1c3c7b88939f6fa1b0b96e579f12e96f", "tree": "b56864fed4a0aa286696cb4e63cbea6d8a962c8a", "parents": [ "ff6b8ea68f4b7353f88b97024f28127e2148aa00" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Wed Sep 20 15:58:51 2006 +0200" }, "committer": { "name": "Martin Schwidefsky", "email": "schwidefsky@de.ibm.com", "time": "Wed Sep 20 15:58:51 2006 +0200" }, "message": "[S390] empty function defines.\n\nUse do { } while (0) constructs instead of empty defines to avoid\nsubtle compile bugs.\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nSigned-off-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\n" }, { "commit": "62c4f0a2d5a188f73a94f2cb8ea0dba3e7cf0a7f", "tree": "e85ca2d0dd43f90dccf758338764c3caa55f333f", "parents": [ "089f26d5e31b7bf42a9a8fefec08b30cd27f4b0e" ], "author": { "name": "David Woodhouse", "email": "dwmw2@infradead.org", "time": "Wed Apr 26 12:56:16 2006 +0100" }, "committer": { "name": "David Woodhouse", "email": "dwmw2@infradead.org", "time": "Wed Apr 26 12:56:16 2006 +0100" }, "message": "Don\u0027t include linux/config.h from anywhere else in include/\n\nSigned-off-by: David Woodhouse \u003cdwmw2@infradead.org\u003e\n" }, { "commit": "255acee706b333b79f593dd366f16e1f107cccc3", "tree": "47c68487eda1df3bf026444045106301bd3a3ff5", "parents": [ "1fca251f36fac3fae7d9cf10de69c2c93f6c0000" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Fri Feb 17 13:52:46 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Feb 17 13:59:26 2006 -0800" }, "message": "[PATCH] s390: additional_cpus parameter\n\nIntroduce additional_cpus command line option. By default no additional cpu\ncan be attached to the system anymore. Only the cpus present at IPL time can\nbe switched on/off. If it is desired that additional cpus can be attached to\nthe system the maximum number of additional cpus needs to be specified with\nthis option.\n\nThis change is necessary in order to limit the waste of per_cpu data\nstructures.\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "a386fba2516b5404864647906219ced57bf2f2b7", "tree": "d5f483a67be2b94025afa38a3e6d56968cea63b8", "parents": [ "5238da45f345898a8bfcd14e53b0431fcee36a04" ], "author": { "name": "Heiko Carstens", "email": "heiko.carstens@de.ibm.com", "time": "Sat Feb 11 17:56:01 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Sat Feb 11 21:41:12 2006 -0800" }, "message": "[PATCH] s390: fix non smp build of kexec\n\nAdd missing smp_cpu_not_running define to avoid build warnings in the non smp\ncase.\n\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "4448aaf0faafff3f275d15937c28b6346760e028", "tree": "d0477d4d0871c94a6eff7761d06b16a682e9ec53", "parents": [ "0fbeb5a45dccd493c35a68a5548e6a9d9882a791" ], "author": { "name": "Adrian Bunk", "email": "bunk@stusta.de", "time": "Tue Nov 08 21:34:42 2005 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Wed Nov 09 07:55:52 2005 -0800" }, "message": "[PATCH] s390: \"extern inline\" -\u003e \"static inline\"\n\n\"extern inline\" -\u003e \"static inline\"\n\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "39c715b71740c4a78ba4769fb54826929bac03cb", "tree": "94dd679dfc8e6c2db65971739aa8c8c6206f8174", "parents": [ "84929801e14d968caeb84795bfbb88f04283fbd9" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Tue Jun 21 17:14:34 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Tue Jun 21 18:46:13 2005 -0700" }, "message": "[PATCH] smp_processor_id() cleanup\n\nThis patch implements a number of smp_processor_id() cleanup ideas that\nArjan van de Ven and I came up with.\n\nThe previous __smp_processor_id/_smp_processor_id/smp_processor_id API\nspaghetti was hard to follow both on the implementational and on the\nusage side.\n\nSome of the complexity arose from picking wrong names, some of the\ncomplexity comes from the fact that not all architectures defined\n__smp_processor_id.\n\nIn the new code, there are two externally visible symbols:\n\n - smp_processor_id(): debug variant.\n\n - raw_smp_processor_id(): nondebug variant. Replaces all existing\n uses of _smp_processor_id() and __smp_processor_id(). Defined\n by every SMP architecture in include/asm-*/smp.h.\n\nThere is one new internal symbol, dependent on DEBUG_PREEMPT:\n\n - debug_smp_processor_id(): internal debug variant, mapped to\n smp_processor_id().\n\nAlso, i moved debug_smp_processor_id() from lib/kernel_lock.c into a new\nlib/smp_processor_id.c file. All related comments got updated and/or\nclarified.\n\nI have build/boot tested the following 8 .config combinations on x86:\n\n {SMP,UP} x {PREEMPT,!PREEMPT} x {DEBUG_PREEMPT,!DEBUG_PREEMPT}\n\nI have also build/boot tested x64 on UP/PREEMPT/DEBUG_PREEMPT. (Other\narchitectures are untested, but should work just fine.)\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\nSigned-off-by: Arjan van de Ven \u003carjan@infradead.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "1da177e4c3f41524e886b7f1b8a0c1fc7321cac2", "tree": "0bba044c4ce775e45a88a51686b5d9f90697ea9d", "parents": [], "author": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sat Apr 16 15:20:36 2005 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@ppc970.osdl.org", "time": "Sat Apr 16 15:20:36 2005 -0700" }, "message": "Linux-2.6.12-rc2\n\nInitial git repository build. I\u0027m not bothering with the full history,\neven though we have it. We can create a separate \"historical\" git\narchive of that later if we want to, and in the meantime it\u0027s about\n3.2GB when imported into git - space that would just make the early\ngit days unnecessarily complicated, when we don\u0027t have a lot of good\ninfrastructure for it.\n\nLet it rip!\n" } ] }