)]}' { "log": [ { "commit": "0609697eab9775564845d4c94f9e3780fb791ffd", "tree": "0acb503e18c4a807d2a5d9a2417ecd3c292a7026", "parents": [ "cdf57cab27aef72f13a19c86858c6cac9951dc24" ], "author": { "name": "Paul Mundt", "email": "lethal@linux-sh.org", "time": "Wed Jan 21 18:51:53 2009 +0900" }, "committer": { "name": "Paul Mundt", "email": "lethal@linux-sh.org", "time": "Wed Jan 21 18:51:53 2009 +0900" }, "message": "dma-coherent: Restore dma_alloc_from_coherent() large alloc fall back policy.\n\nWhen doing large allocations (larger than the per-device coherent area)\nthe generic memory allocators are silently fallen back on regardless of\nconsideration for the per-device constraints.\n\nIn the DMA_MEMORY_EXCLUSIVE case falling back on generic memory is not\nan option, as it tends not to be addressable by the DMA hardware in\nquestion. This issue showed up with the 8139too breakage on the\nDreamcast, where non-addressable buffers were silently allocated due to\nthe size mismatch calculation -- while it should have simply errored out\nupon being unable to satisfy the allocation with the given device\nconstraints.\n\nThis restores fall back behaviour to what it was before the oversized\nrequest change caused multiple regressions.\n\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.org\u003e\n" }, { "commit": "cdf57cab27aef72f13a19c86858c6cac9951dc24", "tree": "86226edbbe82c3f3ddca7e1ad929037e2f0ea6ad", "parents": [ "2afb447f33c29cb000a494396559f8005d3e33c1" ], "author": { "name": "Adrian McMenamin", "email": "adrian@mcmen.demon.co.uk", "time": "Wed Jan 21 18:47:38 2009 +0900" }, "committer": { "name": "Paul Mundt", "email": "lethal@linux-sh.org", "time": "Wed Jan 21 18:47:38 2009 +0900" }, "message": "dma-coherent: per-device coherent area is in pages, not bytes.\n\nCommit 58c6d3dfe436eb8cfb451981d8fdc9044eaf42da (\"dma-coherent: catch\noversized requests to dma_alloc_from_coherent()\") attempted to add a\nsanity check to bail out on allocations larger than the coherent area.\n\nUnfortunately when this was implemented, the fact the coherent area\nis tracked in pages rather than bytes was overlooked, which subsequently\nbroke every single dma_alloc_from_coherent() user, forcing the allocation\nsilently through generic memory instead.\n\nSigned-off-by: Adrian McMenamin \u003cadrian@mcmen.demon.co.uk \u003e\nSigned-off-by: Paul Mundt \u003clethal@linux-sh.org\u003e\n" }, { "commit": "58c6d3dfe436eb8cfb451981d8fdc9044eaf42da", "tree": "c4f7fd8f6a24c5d242dd7bd0a876413f15e26fcd", "parents": [ "eccd83e116e7f414a1da3aae3745384b7b171883" ], "author": { "name": "Johannes Weiner", "email": "hannes@cmpxchg.org", "time": "Tue Jan 06 14:43:10 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 06 15:59:31 2009 -0800" }, "message": "dma-coherent: catch oversized requests to dma_alloc_from_coherent()\n\nPrevent passing an order to bitmap_find_free_region() that is larger than\nthe actual bitmap can represent.\n\nThese requests can come from device drivers that have no idea how big the\ndma region is and need to rely on dma_alloc_from_coherent() to sort it out\nfor them.\n\nReported-by: Guennadi Liakhovetski \u003clg@denx.de\u003e\nSigned-off-by: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nCc: Dmitry Baryshkov \u003cdbaryshkov@gmail.com\u003e\nCc: Jesse Barnes \u003cjbarnes@virtuousgeek.org\u003e\nCc: Tetsuo Handa \u003cpenguin-kernel@i-love.sakura.ne.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "eccd83e116e7f414a1da3aae3745384b7b171883", "tree": "3cc2e2778ecafa34be3380bc85ec9d72b94b5292", "parents": [ "0bef3c2dc7d0c8238330785c8f4504761b0e370b" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Tue Jan 06 14:43:09 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 06 15:59:31 2009 -0800" }, "message": "dma_alloc_coherent: clean it up\n\nThis thing was rather stupidly coded. Rework it all prior to making\nchanges.\n\nAlso, rename local variable `page\u0027: kernel readers expect something called\n`page\u0027 to have type `struct page *\u0027.\n\nCc: Guennadi Liakhovetski \u003clg@denx.de\u003e\nCc: Johannes Weiner \u003channes@cmpxchg.org\u003e\nCc: Pekka Enberg \u003cpenberg@cs.helsinki.fi\u003e\nCc: Dmitry Baryshkov \u003cdbaryshkov@gmail.com\u003e\nCc: Jesse Barnes \u003cjbarnes@virtuousgeek.org\u003e\nCc: Tetsuo Handa \u003cpenguin-kernel@i-love.sakura.ne.jp\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "0bef3c2dc7d0c8238330785c8f4504761b0e370b", "tree": "f43e7c7e49f5e67823e7e077c821e8f8d2571e48", "parents": [ "8375d4909aee4c18798f373ecf24a79f040f75fc" ], "author": { "name": "Andrew Morton", "email": "akpm@linux-foundation.org", "time": "Tue Jan 06 14:43:08 2009 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Jan 06 15:59:30 2009 -0800" }, "message": "dma_alloc_from_coherent(): fix fallback to generic memory\n\nIf bitmap_find_free_region() fails and DMA_MEMORY_EXCLUSIVE is not set,\nthe function will fail to write anything to *ret and will return 1. This will cause dma_alloc_coherent() to return an uninitialised value,\ncrashing the kernel, perhaps via DMA to a random address.\n\nFix that by changing it to return zero in this case, so the caller will\nproceed to allocate the memory from the generic memory allocator.\n\nCc: Tetsuo Handa \u003cpenguin-kernel@i-love.sakura.ne.jp\u003e\nCc: Dmitry Baryshkov \u003cdbaryshkov@gmail.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Johannes Weiner \u003channes@cmpxchg.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a38409fbb5181324fb73b359189a72e02b6c7030", "tree": "9e8f5cc174abdcb54899f8e58b9e9e46f914a01e", "parents": [ "2cd54961caff9fe9109807c6603a0af0729b9591" ], "author": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Wed Aug 20 12:16:09 2008 +0200" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Aug 22 08:34:53 2008 +0200" }, "message": "dma-coherent: export dma_[alloc|release]_from_coherent methods\n\nfixes modular builds:\n\n ERROR: \"dma_alloc_from_coherent\" [sound/core/snd-page-alloc.ko] undefined!\n ERROR: \"dma_release_from_coherent\" [sound/core/snd-page-alloc.ko] undefined!\n\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "cb3952bf7853667a1cb3515e67f27e67f0fce9e8", "tree": "b861e4e3636dbac1d17b8feb8c25e744c9e4f80a", "parents": [ "bba81165867313766534dd31603de51bdd36ef9b" ], "author": { "name": "Dmitry Baryshkov", "email": "dbaryshkov@gmail.com", "time": "Wed Jul 30 14:46:50 2008 +0400" }, "committer": { "name": "Jesse Barnes", "email": "jbarnes@virtuousgeek.org", "time": "Thu Aug 07 06:52:01 2008 -0700" }, "message": "DMA: make dma-coherent.c documentation kdoc-friendly\n\nSpotted by Randy.\n\nAcked-by: Randy Dunlap \u003crandy.dunlap@oracle.com\u003e\nSigned-off-by: Dmitry Baryshkov \u003cdbaryshkov@gmail.com\u003e\nSigned-off-by: Jesse Barnes \u003cjbarnes@virtuousgeek.org\u003e\n" }, { "commit": "d2dc1f4adb4b5b02d87e49e115e5107f4da790c0", "tree": "37b5d2a3dd97a89981541b96bf6043741f09f92d", "parents": [ "978cc90c469b38bcbbfd00a8c183d74e5b17bf45" ], "author": { "name": "Jan Beulich", "email": "jbeulich@novell.com", "time": "Tue Aug 05 13:01:31 2008 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Tue Aug 05 14:33:49 2008 -0700" }, "message": "dma: fix order calculation in dma_mark_declared_memory_occupied()\n\nget_order() takes byte-sized input, not a page-granular one.\n\nIrrespective of this fix I\u0027m inclined to believe that this doesn\u0027t work\nright anyway - bitmap_allocate_region() has an implicit assumption of\n\u0027pos\u0027 being suitable for \u0027order\u0027, which this function doesn\u0027t seem to\nenforce (and since it\u0027s being called with a byte-granular value there\u0027s no\nreason to believe that the callers would make sure device_addr is passed\naccordingly - it\u0027s also not documented that way).\n\nSigned-off-by: Jan Beulich \u003cjbeulich@novell.com\u003e\nCc: James E.J. Bottomley \u003cJames.Bottomley@HansenPartnership.com\u003e\nCc: Ingo Molnar \u003cmingo@elte.hu\u003e\nCc: Dmitry Baryshkov \u003cdbaryshkov@gmail.com\u003e\nCc: Jesse Barnes \u003cjbarnes@virtuousgeek.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "b6d4f7e3ef25beb8c658c97867d98883e69dc544", "tree": "b89a6c5588cae046ab9e007e22354ebdacb9318a", "parents": [ "8fa8b9fbab90c74139e8e868fe5b30b6a9f6be65" ], "author": { "name": "Dmitry Baryshkov", "email": "dbaryshkov@gmail.com", "time": "Sun Jul 20 15:01:10 2008 +0400" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Sun Jul 20 21:22:00 2008 +0200" }, "message": "dma-coherent: add documentation to new interfaces\n\nSigned-off-by: Dmitry Baryshkov \u003cdbaryshkov@gmail.com\u003e\nCc: Jesse Barnes \u003cjbarnes@virtuousgeek.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "538c29d43ebdac2edcef96ac07982d2296a63077", "tree": "c68b2e64c9c10e02adf6d24390df16d0f7dcb530", "parents": [ "f6dc8ccaab6d8f63cbae1e6c73fe972b26f5376c" ], "author": { "name": "Dmitry Baryshkov", "email": "dbaryshkov@gmail.com", "time": "Fri Jul 18 13:29:57 2008 +0400" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Fri Jul 18 21:14:01 2008 +0200" }, "message": "Generic dma-coherent: fix DMA_MEMORY_EXCLUSIVE\n\nDon\u0027t rewrite successfull allocation return values\nin case the memory was marked with DMA_MEMORY_EXCLUSIVE.\n\nSigned-off-by: Dmitry Baryshkov \u003cdbaryshkov@gmail.com\u003e\nCc: Jesse Barnes \u003cjbarnes@virtuousgeek.org\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" }, { "commit": "ee7e5516be4f2107535ad5a3d47d9c79f93661a2", "tree": "57bdb330864036d6241deb8e69f351ee5ee01adb", "parents": [ "543cf4cb3fe6f6cae3651ba918b9c56200b257d0" ], "author": { "name": "Dmitry Baryshkov", "email": "dbaryshkov@gmail.com", "time": "Sun Jun 29 14:18:46 2008 +0400" }, "committer": { "name": "Ingo Molnar", "email": "mingo@elte.hu", "time": "Mon Jun 30 12:51:05 2008 +0200" }, "message": "generic: per-device coherent dma allocator\n\nCurrently x86_32, sh and cris-v32 provide per-device coherent dma\nmemory allocator.\n\nHowever their implementation is nearly identical. Refactor out\ncommon code to be reused by them.\n\nSigned-off-by: Dmitry Baryshkov \u003cdbaryshkov@gmail.com\u003e\nSigned-off-by: Ingo Molnar \u003cmingo@elte.hu\u003e\n" } ] }