)]}' { "log": [ { "commit": "c65c9bc3efa5589f691276bb9db689119a711222", "tree": "ccb86ffb28ecafa77623fb2789faae8e4c1e2c4b", "parents": [ "e8b70e7d3e86319a8b2aaabde3866833d92cd80f" ], "author": { "name": "Alan Cox", "email": "alan@linux.intel.com", "time": "Thu Jun 11 12:50:12 2009 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Thu Jun 11 08:51:01 2009 -0700" }, "message": "tty: rewrite the ldisc locking\n\nThere are several pretty much unfixable races in the old ldisc code, especially\nwith respect to pty behaviour and also to hangup. It\u0027s easier to rewrite the\ncode than simply try and patch it up.\n\nThis patch\n- splits the ldisc from the tty (so we will be able to refcount it more cleanly\n later)\n- introduces a mutex lock for ldisc changing on an active device\n- fixes the complete mess that hangup caused\n- implements hopefully correct setldisc/close/hangup locking\n\nThere are still some problems around pty pairs that have always been there but\nat least it is now possible to understand the code and fix further problems.\n\nThis fixes the following known bugs\n- hang up can leak ldisc references\n- hang up may not call open/close on ldisc in a matched way\n- pty/tty pairs can deadlock during an ldisc change\n- reading the ldisc proc files can cause every ldisc to be loaded\n\nand probably a few other of the mysterious ldisc race reports.\n\nI\u0027m sure it also adds the odd new one.\n\nSigned-off-by: Alan Cox \u003calan@linux.intel.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "878b8619f711280fd05845e21956434b5e588cc4", "tree": "e2cb6be1d6e16bd0da18a79a8a85f4194df33d6f", "parents": [ "f984d024190d5df98e448e35aa9e89a46fe50bb9" ], "author": { "name": "Mikulas Patocka", "email": "mpatocka@redhat.com", "time": "Fri Jan 30 15:27:14 2009 -0500" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sat Jan 31 15:51:31 2009 -0800" }, "message": "Fix memory corruption in console selection\n\nFix an off-by-two memory error in console selection.\n\nThe loop below goes from sel_start to sel_end (inclusive), so it writes\none more character. This one more character was added to the allocated\nsize (+1), but it was not multiplied by an UTF-8 multiplier.\n\nThis patch fixes a memory corruption when UTF-8 console is used and the\nuser selects a few characters, all of them 3-byte in UTF-8 (for example\na frame line).\n\nWhen memory redzones are enabled, a redzone corruption is reported.\nWhen they are not enabled, trashing of random memory occurs.\n\nSigned-off-by: Mikulas Patocka \u003cmpatocka@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "c9f19e96a2f33cd56c2bd19f87a0c4982d011c2b", "tree": "7ebb5f6e6648e7e8eb975944d4a18aadb05851bf", "parents": [ "0ac6053c4db9369d7b0f9b39c30f4fb04405666b" ], "author": { "name": "Alan Cox", "email": "alan@redhat.com", "time": "Fri Jan 02 13:47:26 2009 +0000" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Fri Jan 02 10:19:40 2009 -0800" }, "message": "tty: Remove some pointless casts\n\ndisc_data and driver_data are void *\n\nSigned-off-by: Alan Cox \u003calan@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "a352def21a642133758b868c71bee12ab34ad5c5", "tree": "95d0f7229f9e4afccdc6fbbf11f7f5c6dd83b0fd", "parents": [ "e1e5770bb63fb9d71619a68f52cb0ba4b2ae58a6" ], "author": { "name": "Alan Cox", "email": "alan@redhat.com", "time": "Wed Jul 16 21:53:12 2008 +0100" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@linux-foundation.org", "time": "Sun Jul 20 17:12:34 2008 -0700" }, "message": "tty: Ldisc revamp\n\nMove the line disciplines towards a conventional -\u003eops arrangement. For\nthe moment the actual \u0027tty_ldisc\u0027 struct in the tty is kept as part of\nthe tty struct but this can then be changed if it turns out that when it\nall settles down we want to refcount ldiscs separately to the tty.\n\nPull the ldisc code out of /proc and put it with our ldisc code.\n\nSigned-off-by: Alan Cox \u003calan@redhat.com\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "759448f459234bfcf34b82471f0dba77a9aca498", "tree": "61cbf8501bdad78c03e034072791fbf3e0436d43", "parents": [ "aa0ac36518be648dda3a32f0b37a8b2b546e1b24" ], "author": { "name": "Jan Engelhardt", "email": "jengelh@linux01.gwdg.de", "time": "Sun Jul 15 23:40:40 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Mon Jul 16 09:05:46 2007 -0700" }, "message": "Kernel utf-8 handling\n\nThis patch fixes dead keys and copy/paste of non-ASCII characters in UTF-8\nmode on Linux console. See more details about the original patch at:\nhttp://chris.heathens.co.nz/linux/utf8.html\n\nAlready posted on\n\t(Oldest) http://lkml.org/lkml/2003/5/31/148\n\t http://lkml.org/lkml/2005/12/24/69\n\t(Recent) http://lkml.org/lkml/2006/8/7/75\n\n[bunk@stusta.de: make drivers/char/selection.c:store_utf8() static]\nSigned-off-by: Jan Engelhardt \u003cjengelh@gmx.de\u003e\nCc: Alexander E. Patrakov \u003cpatrakov@ums.usu.ru\u003e\nCc: Dmitry Torokhov \u003cdtor@mail.ru\u003e\nCc: \"Antonino A. Daplas\" \u003cadaplas@pol.net\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nCc: David Woodhouse \u003cdwmw2@infradead.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "cc0a8fbb7ce00f65dc337dd91389b7151f44ed30", "tree": "2d33013f99e7b889932618ff02a77dae7734023d", "parents": [ "5ab2f7e0fdd04148e08348701d6bd6a292ce2d26" ], "author": { "name": "Milind Arun Choudhary", "email": "milindchoudhary@gmail.com", "time": "Tue May 08 00:30:52 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue May 08 11:15:13 2007 -0700" }, "message": "drivers/char: use __set_current_state()\n\nuse __set_current_state(TASK_*) instead of current-\u003estate \u003d TASK_*,\n\nSigned-off-by: Milind Arun Choudhary \u003cmilindchoudhary@gmail.com\u003e\nCc: Jiri Slaby \u003cjirislaby@gmail.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "ca9bda00b4aafc42cd3d1b9d32934463e2993b4c", "tree": "dbb7ba5320bb8d1cbf97b3493687cb87932ad5f4", "parents": [ "ae78bf9c4f5fde3c67e2829505f195d7347ce3e4" ], "author": { "name": "Alan Cox", "email": "alan@lxorguk.ukuu.org.uk", "time": "Fri Sep 29 02:00:03 2006 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Sep 29 09:18:12 2006 -0700" }, "message": "[PATCH] tty locking on resize\n\nThe current kernel serializes console resizes but does not serialize the\nresize against the tty structure updates. This means that while two\nparallel resizes cannot mess up the console you can get incorrect results\nreported.\n\nSecondly while doing this I added vc_lock_resize() to lock and resize the\nconsole. This leaves all knowledge of the console_sem in the vt/console\ndriver and kicks it out of the tty layer, which is good\n\nThirdly while doing this I decided I couldn\u0027t stand \"disallocate\" any\nlonger so I switched it to \"deallocate\".\n\nSigned-off-by: Alan Cox \u003calan@redhat.com\u003e\nCc: Paul Fulghum \u003cpaulkf@microgate.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "33f0f88f1c51ae5c2d593d26960c760ea154c2e2", "tree": "f53a38cf49406863f079d74d0e8f91b276f7c1a9", "parents": [ "6ed80991a2dce4afc113be35089c564d62fa1f11" ], "author": { "name": "Alan Cox", "email": "alan@lxorguk.ukuu.org.uk", "time": "Mon Jan 09 20:54:13 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Tue Jan 10 08:01:59 2006 -0800" }, "message": "[PATCH] TTY layer buffering revamp\n\nThe API and code have been through various bits of initial review by\nserial driver people but they definitely need to live somewhere for a\nwhile so the unconverted drivers can get knocked into shape, existing\ndrivers that have been updated can be better tuned and bugs whacked out.\n\nThis replaces the tty flip buffers with kmalloc objects in rings. In the\nnormal situation for an IRQ driven serial port at typical speeds the\nbehaviour is pretty much the same, two buffers end up allocated and the\nkernel cycles between them as before.\n\nWhen there are delays or at high speed we now behave far better as the\nbuffer pool can grow a bit rather than lose characters. This also means\nthat we can operate at higher speeds reliably.\n\nFor drivers that receive characters in blocks (DMA based, USB and\nespecially virtualisation) the layer allows a lot of driver specific\ncode that works around the tty layer with private secondary queues to be\nremoved. The IBM folks need this sort of layer, the smart serial port\npeople do, the virtualisers do (because a virtualised tty typically\noperates at infinite speed rather than emulating 9600 baud).\n\nFinally many drivers had invalid and unsafe attempts to avoid buffer\noverflows by directly invoking tty methods extracted out of the innards\nof work queue structs. These are no longer needed and all go away. That\nfixes various random hangs with serial ports on overflow.\n\nThe other change in here is to optimise the receive_room path that is\nused by some callers. It turns out that only one ldisc uses receive room\nexcept asa constant and it updates it far far less than the value is\nread. We thus make it a variable not a function call.\n\nI expect the code to contain bugs due to the size alone but I\u0027ll be\nwatching and squashing them and feeding out new patches as it goes.\n\nBecause the buffers now dynamically expand you should only run out of\nbuffering when the kernel runs out of memory for real. That means a lot of\nthe horrible hacks high performance drivers used to do just aren\u0027t needed any\nmore.\n\nDescription:\n\ntty_insert_flip_char is an old API and continues to work as before, as does\ntty_flip_buffer_push() [this is why many drivers dont need modification]. It\ndoes now also return the number of chars inserted\n\nThere are also\n\ntty_buffer_request_room(tty, len)\n\nwhich asks for a buffer block of the length requested and returns the space\nfound. This improves efficiency with hardware that knows how much to\ntransfer.\n\nand tty_insert_flip_string_flags(tty, str, flags, len)\n\nto insert a string of characters and flags\n\nFor a smart interface the usual code is\n\n len \u003d tty_request_buffer_room(tty, amount_hardware_says);\n tty_insert_flip_string(tty, buffer_from_card, len);\n\nMore description!\n\nAt the moment tty buffers are attached directly to the tty. This is causing a\nlot of the problems related to tty layer locking, also problems at high speed\nand also with bursty data (such as occurs in virtualised environments)\n\nI\u0027m working on ripping out the flip buffers and replacing them with a pool of\ndynamically allocated buffers. This allows both for old style \"byte I/O\"\ndevices and also helps virtualisation and smart devices where large blocks of\ndata suddenely materialise and need storing.\n\nSo far so good. Lots of drivers reference tty-\u003eflip.*. Several of them also\ncall directly and unsafely into function pointers it provides. This will all\nbreak. Most drivers can use tty_insert_flip_char which can be kept as an API\nbut others need more.\n\nAt the moment I\u0027ve added the following interfaces, if people think more will\nbe needed now is a good time to say\n\n int tty_buffer_request_room(tty, size)\n\nTry and ensure at least size bytes are available, returns actual room (may be\nzero). At the moment it just uses the flipbuf space but that will change.\nRepeated calls without characters being added are not cumulative. (ie if you\ncall it with 1, 1, 1, and then 4 you\u0027ll have four characters of space. The\nother functions will also try and grow buffers in future but this will be a\nmore efficient way when you know block sizes.\n\n int tty_insert_flip_char(tty, ch, flag)\n\nAs before insert a character if there is room. Now returns 1 for success, 0\nfor failure.\n\n int tty_insert_flip_string(tty, str, len)\n\nInsert a block of non error characters. Returns the number inserted.\n\n int tty_prepare_flip_string(tty, strptr, len)\n\nAdjust the buffer to allow len characters to be added. Returns a buffer\npointer in strptr and the length available. This allows for hardware that\nneeds to use functions like insl or mencpy_fromio.\n\nSigned-off-by: Alan Cox \u003calan@redhat.com\u003e\nCc: Paul Fulghum \u003cpaulkf@microgate.com\u003e\nSigned-off-by: Hirokazu Takata \u003ctakata@linux-m32r.org\u003e\nSigned-off-by: Serge Hallyn \u003cserue@us.ibm.com\u003e\nSigned-off-by: Jeff Dike \u003cjdike@addtoit.com\u003e\nSigned-off-by: John Hawkes \u003chawkes@sgi.com\u003e\nSigned-off-by: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nSigned-off-by: Adrian Bunk \u003cbunk@stusta.de\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "735d5661d5c5f023a78fbe68e771e261040ff1b7", "tree": "b9865f0322d8e74661639f5f33b1897b23004659", "parents": [ "fa671646f61182cd18234461a6e65f50c6558695" ], "author": { "name": "Jesper Juhl", "email": "jesper.juhl@gmail.com", "time": "Mon Nov 07 01:01:29 2005 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Mon Nov 07 07:54:02 2005 -0800" }, "message": "[PATCH] kfree cleanup: drivers/char\n\nThis is the drivers/char/ part of the big kfree cleanup patch.\n\nRemove pointless checks for NULL prior to calling kfree() in drivers/char/.\n\nSigned-off-by: Jesper Juhl \u003cjesper.juhl@gmail.com\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" } ] }