)]}' { "log": [ { "commit": "fb8642db19d57361be671a30d3f13defaf6b6cff", "tree": "0b3620291663dbf4d69d9af080e628ab32ab1889", "parents": [ "ea24608f02dbdfd83c77749445df58616a18a770" ], "author": { "name": "Stephen Rothwell", "email": "sfr@canb.auug.org.au", "time": "Mon Feb 11 11:38:40 2008 +1100" }, "committer": { "name": "Paul Mackerras", "email": "paulus@samba.org", "time": "Thu Feb 14 22:11:01 2008 +1100" }, "message": "[POWERPC] Wire up new timerfd syscalls\n\nSigned-off-by: Stephen Rothwell \u003csfr@canb.auug.org.au\u003e\nSigned-off-by: Paul Mackerras \u003cpaulus@samba.org\u003e\n" }, { "commit": "4d672e7ac79b5ec5cdc90e450823441e20464691", "tree": "66da3aa0bf7f7ac80376a93f17edbb2246b2df06", "parents": [ "5e05ad7d4e3b11f935998882b5d9c3b257137f1b" ], "author": { "name": "Davide Libenzi", "email": "davidel@xmailserver.org", "time": "Mon Feb 04 22:27:26 2008 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Feb 05 09:44:07 2008 -0800" }, "message": "timerfd: new timerfd API\n\nThis is the new timerfd API as it is implemented by the following patch:\n\nint timerfd_create(int clockid, int flags);\nint timerfd_settime(int ufd, int flags,\n\t\t const struct itimerspec *utmr,\n\t\t struct itimerspec *otmr);\nint timerfd_gettime(int ufd, struct itimerspec *otmr);\n\nThe timerfd_create() API creates an un-programmed timerfd fd. The \"clockid\"\nparameter can be either CLOCK_MONOTONIC or CLOCK_REALTIME.\n\nThe timerfd_settime() API give new settings by the timerfd fd, by optionally\nretrieving the previous expiration time (in case the \"otmr\" parameter is not\nNULL).\n\nThe time value specified in \"utmr\" is absolute, if the TFD_TIMER_ABSTIME bit\nis set in the \"flags\" parameter. Otherwise it\u0027s a relative time.\n\nThe timerfd_gettime() API returns the next expiration time of the timer, or\n{0, 0} if the timerfd has not been set yet.\n\nLike the previous timerfd API implementation, read(2) and poll(2) are\nsupported (with the same interface). Here\u0027s a simple test program I used to\nexercise the new timerfd APIs:\n\nhttp://www.xmailserver.org/timerfd-test2.c\n\n[akpm@linux-foundation.org: coding-style cleanups]\n[akpm@linux-foundation.org: fix ia64 build]\n[akpm@linux-foundation.org: fix m68k build]\n[akpm@linux-foundation.org: fix mips build]\n[akpm@linux-foundation.org: fix alpha, arm, blackfin, cris, m68k, s390, sparc and sparc64 builds]\n[heiko.carstens@de.ibm.com: fix s390]\n[akpm@linux-foundation.org: fix powerpc build]\n[akpm@linux-foundation.org: fix sparc64 more]\nSigned-off-by: Davide Libenzi \u003cdavidel@xmailserver.org\u003e\nCc: Michael Kerrisk \u003cmtk-manpages@gmx.net\u003e\nCc: Thomas Gleixner \u003ctglx@linutronix.de\u003e\nCc: Davide Libenzi \u003cdavidel@xmailserver.org\u003e\nCc: Michael Kerrisk \u003cmtk-manpages@gmx.net\u003e\nCc: Martin Schwidefsky \u003cschwidefsky@de.ibm.com\u003e\nSigned-off-by: Heiko Carstens \u003cheiko.carstens@de.ibm.com\u003e\nCc: Michael Kerrisk \u003cmtk.manpages@gmail.com\u003e\nCc: Davide Libenzi \u003cdavidel@xmailserver.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "fa28237cfcc5827553044cbd6ee52e33692b0faa", "tree": "2e34678548e5323eef7392a94a7415e1754cbd1e", "parents": [ "0a0a5af30b9831e4f049610b5a2d9d5108ff027a" ], "author": { "name": "Paul Mackerras", "email": "paulus@samba.org", "time": "Thu Jan 24 08:35:13 2008 +1100" }, "committer": { "name": "Paul Mackerras", "email": "paulus@samba.org", "time": "Thu Jan 24 10:06:01 2008 +1100" }, "message": "[POWERPC] Provide a way to protect 4k subpages when using 64k pages\n\nUsing 64k pages on 64-bit PowerPC systems makes life difficult for\nemulators that are trying to emulate an ISA, such as x86, which use a\nsmaller page size, since the emulator can no longer use the MMU and\nthe normal system calls for controlling page protections. Of course,\nthe emulator can emulate the MMU by checking and possibly remapping\nthe address for each memory access in software, but that is pretty\nslow.\n\nThis provides a facility for such programs to control the access\npermissions on individual 4k sub-pages of 64k pages. The idea is\nthat the emulator supplies an array of protection masks to apply to a\nspecified range of virtual addresses. These masks are applied at the\nlevel where hardware PTEs are inserted into the hardware page table\nbased on the Linux PTEs, so the Linux PTEs are not affected. Note\nthat this new mechanism does not allow any access that would otherwise\nbe prohibited; it can only prohibit accesses that would otherwise be\nallowed. This new facility is only available on 64-bit PowerPC and\nonly when the kernel is configured for 64k pages.\n\nThe masks are supplied using a new subpage_prot system call, which\ntakes a starting virtual address and length, and a pointer to an array\nof protection masks in memory. The array has a 32-bit word per 64k\npage to be protected; each 32-bit word consists of 16 2-bit fields,\nfor which 0 allows any access (that is otherwise allowed), 1 prevents\nwrite accesses, and 2 or 3 prevent any access.\n\nImplicit in this is that the regions of the address space that are\nprotected are switched to use 4k hardware pages rather than 64k\nhardware pages (on machines with hardware 64k page support). In fact\nthe whole process is switched to use 4k hardware pages when the\nsubpage_prot system call is used, but this could be improved in future\nto switch only the affected segments.\n\nThe subpage protection bits are stored in a 3 level tree akin to the\npage table tree. The top level of this tree is stored in a structure\nthat is appended to the top level of the page table tree, i.e., the\npgd array. Since it will often only be 32-bit addresses (below 4GB)\nthat are protected, the pointers to the first four bottom level pages\nare also stored in this structure (each bottom level page contains the\nprotection bits for 1GB of address space), so the protection bits for\naddresses below 4GB can be accessed with one fewer loads than those\nfor higher addresses.\n\nSigned-off-by: Paul Mackerras \u003cpaulus@samba.org\u003e\n" }, { "commit": "f2205fbb5a8933514fd343cc329df631802b4543", "tree": "6d3a07146de64900ef44d4e443c50eb30139f23d", "parents": [ "b37ceefe7cfc56f27f03269206a53faedb8be9fd" ], "author": { "name": "Patrick Mansfield", "email": "patmans@us.ibm.com", "time": "Sun Nov 04 04:42:03 2007 +1100" }, "committer": { "name": "Paul Mackerras", "email": "paulus@samba.org", "time": "Thu Nov 08 14:15:32 2007 +1100" }, "message": "[POWERPC] Change fallocate to match unistd.h on powerpc\n\nFix the fallocate system call on powerpc to match its unistd.h.\n\nThis implies none of these system calls are currently working with the\nunistd.h sys call values:\n\tfallocate\n\tsignalfd\n\ttimerfd\n\teventfd\n\tsync_file_range2\n\nSigned-off-by: Patrick Mansfield \u003cpatmans@us.ibm.com\u003e\nAcked-by: Anton Blanchard \u003canton@samba.org\u003e\nSigned-off-by: Paul Mackerras \u003cpaulus@samba.org\u003e\n" }, { "commit": "97ac73506c0ba93f30239bb57b4cfc5d73e68a62", "tree": "4d02848d6c792a70b413deadcaffd7bf8c8d61de", "parents": [ "cb32da0416b823b7f4b65e7e85d6cba16ca4d1e1" ], "author": { "name": "Amit Arora", "email": "aarora@in.ibm.com", "time": "Tue Jul 17 21:42:44 2007 -0400" }, "committer": { "name": "Theodore Ts\u0027o", "email": "tytso@mit.edu", "time": "Tue Jul 17 21:42:44 2007 -0400" }, "message": "sys_fallocate() implementation on i386, x86_64 and powerpc\n\nfallocate() is a new system call being proposed here which will allow\napplications to preallocate space to any file(s) in a file system.\nEach file system implementation that wants to use this feature will need\nto support an inode operation called -\u003efallocate().\nApplications can use this feature to avoid fragmentation to certain\nlevel and thus get faster access speed. With preallocation, applications\nalso get a guarantee of space for particular file(s) - even if later the\nthe system becomes full.\n\nCurrently, glibc provides an interface called posix_fallocate() which\ncan be used for similar cause. Though this has the advantage of working\non all file systems, but it is quite slow (since it writes zeroes to\neach block that has to be preallocated). Without a doubt, file systems\ncan do this more efficiently within the kernel, by implementing\nthe proposed fallocate() system call. It is expected that\nposix_fallocate() will be modified to call this new system call first\nand incase the kernel/filesystem does not implement it, it should fall\nback to the current implementation of writing zeroes to the new blocks.\nToDos:\n1. Implementation on other architectures (other than i386, x86_64,\n and ppc). Patches for s390(x) and ia64 are already available from\n previous posts, but it was decided that they should be added later\n once fallocate is in the mainline. Hence not including those patches\n in this take.\n2. Changes to glibc,\n a) to support fallocate() system call\n b) to make posix_fallocate() and posix_fallocate64() call fallocate()\n\nSigned-off-by: Amit Arora \u003caarora@in.ibm.com\u003e\n" }, { "commit": "edd5cd4a9424f22b0fa08bef5e299d41befd5622", "tree": "dba461b19b066c862a2c4e443b2deb9443bc78c5", "parents": [ "2f4d4da8f82c2598b8713f4a01f360f3751d90be" ], "author": { "name": "David Woodhouse", "email": "dwmw2@infradead.org", "time": "Wed Jun 27 14:10:09 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Thu Jun 28 11:38:30 2007 -0700" }, "message": "Introduce fixed sys_sync_file_range2() syscall, implement on PowerPC and ARM\n\nNot all the world is an i386. Many architectures need 64-bit arguments to be\naligned in suitable pairs of registers, and the original\nsys_sync_file_range(int, loff_t, loff_t, int) was therefore wasting an\nargument register for padding after the first integer. Since we don\u0027t\nnormally have more than 6 arguments for system calls, that left no room for\nthe final argument on some architectures.\n\nFix this by introducing sys_sync_file_range2(int, int, loff_t, loff_t) which\nall fits nicely. In fact, ARM already had that, but called it\nsys_arm_sync_file_range. Move it to fs/sync.c and rename it, then implement\nthe needed compatibility routine. And stop the missing syscall check from\nbitching about the absence of sys_sync_file_range() if we\u0027ve implemented\nsys_sync_file_range2() instead.\n\nTested on PPC32 and with 32-bit and 64-bit userspace on PPC64.\n\nSigned-off-by: David Woodhouse \u003cdwmw2@infradead.org\u003e\nAcked-by: Russell King \u003crmk+kernel@arm.linux.org.uk\u003e\nCc: Arnd Bergmann \u003carnd@arndb.de\u003e\nCc: Paul Mackerras \u003cpaulus@samba.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "3692b9444b15ad12e5ec56ec77b1009bb75f8d42", "tree": "f3d2b480f5dbfc68cd8158405cb7454a7f44efcc", "parents": [ "7c40542ffaa20e361f5f37d112aba41a725fc759" ], "author": { "name": "Stephen Rothwell", "email": "sfr@canb.auug.org.au", "time": "Mon May 14 13:50:33 2007 +1000" }, "committer": { "name": "Paul Mackerras", "email": "paulus@samba.org", "time": "Thu May 17 21:11:13 2007 +1000" }, "message": "[POWERPC] Wire up some more syscalls\n\nsignalfd, timerfd and eventfd\n\nSigned-off-by: Stephen Rothwell \u003csfr@canb.auug.org.au\u003e\nSigned-off-by: Paul Mackerras \u003cpaulus@samba.org\u003e\n" }, { "commit": "ab5570f093585a124cd440f5229393e36c5d600e", "tree": "d49e2fcaa672121f6a2c4100831bd5142640eda2", "parents": [ "2ecf042ef530dd0943e41d84b6344f507941af3e" ], "author": { "name": "Stephen Rothwell", "email": "sfr@canb.auug.org.au", "time": "Wed May 09 17:32:33 2007 +1000" }, "committer": { "name": "Paul Mackerras", "email": "paulus@samba.org", "time": "Thu May 10 21:28:12 2007 +1000" }, "message": "[POWERPC] Wire up sys_utimensat\n\nSigned-off-by: Stephen Rothwell \u003csfr@canb.auug.org.au\u003e\nSigned-off-by: Paul Mackerras \u003cpaulus@samba.org\u003e\n" }, { "commit": "c4b7e8754e3198eb5392568e523da6440143c2cd", "tree": "95af9b699851d63fe4d6487d193a71b4037893c3", "parents": [ "6f29e35e2d4cdbc3e8785982314e54ec5df4ad37" ], "author": { "name": "Don Zickus", "email": "dzickus@redhat.com", "time": "Mon Apr 16 22:53:12 2007 -0700" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@woody.linux-foundation.org", "time": "Tue Apr 17 16:36:26 2007 -0700" }, "message": "allow vmsplice to work in 32-bit mode on ppc64\n\nTrivial change to pass vmsplice arguments through the compat layer on\npp64.\n\nSigned-off-by: Don Zickus \u003cdzickus@redhat.com\u003e\nAcked-by: Stephen Rothwell \u003csfr@canb.auug.org.au\u003e\nAcked-by: Paul Mackerras \u003cpaulus@samba.org\u003e\nCc: Benjamin Herrenschmidt \u003cbenh@kernel.crashing.org\u003e\nSigned-off-by: Andrew Morton \u003cakpm@linux-foundation.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@linux-foundation.org\u003e\n" }, { "commit": "7b3c384db1ff0f336b59d5062617915e216eaec1", "tree": "41e9b3f429a7df0e461ab27d54120de4b8e3ca02", "parents": [ "4b0092c215fc678e325193cf97ddcb4be6a550c3" ], "author": { "name": "Stephen Rothwell", "email": "sfr@canb.auug.org.au", "time": "Fri Mar 09 11:58:11 2007 +1100" }, "committer": { "name": "Paul Mackerras", "email": "paulus@samba.org", "time": "Mon Mar 12 15:48:35 2007 +1100" }, "message": "[POWERPC] sys_move_pages should be callable from an SPU\n\nSigned-off-by: Stephen Rothwell \u003csfr@canb.auug.org.au\u003e\nSigned-off-by: Paul Mackerras \u003cpaulus@samba.org\u003e\n" }, { "commit": "4b0092c215fc678e325193cf97ddcb4be6a550c3", "tree": "e3d29e4cd98a7743a6b1e18ca6527f41da976d4a", "parents": [ "4cd723b4a0cc3e061e0a3fd86a1ec9a227f17c0b" ], "author": { "name": "Stephen Rothwell", "email": "sfr@canb.auug.org.au", "time": "Fri Mar 09 11:57:10 2007 +1100" }, "committer": { "name": "Paul Mackerras", "email": "paulus@samba.org", "time": "Mon Mar 12 15:48:35 2007 +1100" }, "message": "[POWERPC] Wire up sys_epoll_pwait\n\nSigned-off-by: Stephen Rothwell \u003csfr@canb.auug.org.au\u003e\nSigned-off-by: Paul Mackerras \u003cpaulus@samba.org\u003e\n" }, { "commit": "9b96ea662b404b9ed882c78cb844510d804a83e6", "tree": "1c7194861bd76b36bf7ab778acf920a8bf41db5e", "parents": [ "ab9367e38fa97c2ed7f72fd5fa29d0d70d58df89" ], "author": { "name": "Stephen Rothwell", "email": "sfr@canb.auug.org.au", "time": "Mon Feb 12 22:09:18 2007 +1100" }, "committer": { "name": "Paul Mackerras", "email": "paulus@samba.org", "time": "Tue Feb 13 15:35:52 2007 +1100" }, "message": "[POWERPC] Wire up sys_getcpu\n\nSigned-off-by: Stephen Rothwell \u003csfr@canb.auug.org.au\u003e\nSigned-off-by: Paul Mackerras \u003cpaulus@samba.org\u003e\n" }, { "commit": "9716a340310a383751a06589d0775fad04bd3f54", "tree": "d7dd09226ef83271a1265d11f57a8183af8eb36e", "parents": [ "056f4faa572f64fa926491a7d42c627c9dc507a7" ], "author": { "name": "Stephen Rothwell", "email": "sfr@canb.auug.org.au", "time": "Mon Nov 13 14:52:42 2006 +1100" }, "committer": { "name": "Paul Mackerras", "email": "paulus@samba.org", "time": "Thu Nov 16 10:31:14 2006 +1100" }, "message": "[POWERPC] Wire up sys_move_pages\n\nAll the infrastructure is already in place for this, so we only need\nto allocate a syscall number and hook it up.\n\nSigned-off-by: Stephen Rothwell \u003csfr@canb.auug.org.au\u003e\nSigned-off-by: Paul Mackerras \u003cpaulus@samba.org\u003e\n" }, { "commit": "43530d2b04b63ac4bb4ac25deee5f1180ccedc2e", "tree": "cf84c8fbca91a9d6352eafadd235653d4636a643", "parents": [ "3fd593979802f81ff6452596ac61e3840f917589" ], "author": { "name": "Stephen Rothwell", "email": "sfr@canb.auug.org.au", "time": "Thu Nov 02 22:07:24 2006 -0800" }, "committer": { "name": "Linus Torvalds", "email": "torvalds@g5.osdl.org", "time": "Fri Nov 03 12:27:59 2006 -0800" }, "message": "[PATCH] powerpc: wire up sys_migrate_pages\n\nSigned-off-by: Stephen Rothwell \u003csfr@canb.auug.org.au\u003e\nCc: Christoph Lameter \u003cclameter@sgi.com\u003e\nSigned-off-by: Andrew Morton \u003cakpm@osdl.org\u003e\nSigned-off-by: Linus Torvalds \u003ctorvalds@osdl.org\u003e\n" }, { "commit": "72abd54035a3d71fd8f02596e659257e8bba16ca", "tree": "006ddd84ad8d7290bbadccd15633be0d36737c25", "parents": [ "868ea0c9256b658b14603e1ad7361b81b92ccacd" ], "author": { "name": "Andreas Schwab", "email": "schwab@suse.de", "time": "Mon Jun 19 22:45:04 2006 +0200" }, "committer": { "name": "Paul Mackerras", "email": "paulus@samba.org", "time": "Wed Jun 21 15:01:32 2006 +1000" }, "message": "[POWERPC] Unify ppc syscall tables\n\nAvoid duplication of the syscall table for the cell platform. Based on an\nidea from David Woodhouse.\n\nSigned-off-by: Andreas Schwab \u003cschwab@suse.de\u003e\nAcked-by: Arnd Bergmann \u003carnd.bergmann@de.ibm.com\u003e\nSigned-off-by: Paul Mackerras \u003cpaulus@samba.org\u003e\n" } ] }