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* block: make blk_init_free_list and elevator_init idempotentMike Snitzer2010-06-042-2/+7
| | | | | | | | | blk_init_allocated_queue_node may fail and the caller _could_ retry. Accommodate the unlikely event that blk_init_allocated_queue_node is called on an already initialized (possibly partially) request_queue. Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
* block: avoid unconditionally freeing previously allocated request_queueMike Snitzer2010-06-041-6/+11
| | | | | | | | | | | | | | | | | On blk_init_allocated_queue_node failure, only free the request_queue if it is wasn't previously allocated outside the block layer (e.g. blk_init_queue_node was blk_init_allocated_queue_node caller). This addresses an interface bug introduced by the following commit: 01effb0 block: allow initialization of previously allocated request_queue Otherwise the request_queue may be free'd out from underneath a caller that is managing the request_queue directly (e.g. caller uses blk_alloc_queue + blk_init_allocated_queue_node). Signed-off-by: Mike Snitzer <snitzer@redhat.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
* pipe: change /proc/sys/fs/pipe-max-pages to byte sized interfaceJens Axboe2010-06-033-17/+49
| | | | | | | | | | | This changes the interface to be based on bytes instead. The API matches that of F_SETPIPE_SZ in that it rounds up the passed in size so that the resulting page array is a power-of-2 in size. The proc file is renamed to /proc/sys/fs/pipe-max-size to reflect this change. Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
* pipe: change the privilege required for growing a pipe beyond system maxJens Axboe2010-06-031-1/+1
| | | | | | | | Change it to CAP_SYS_RESOURCE, as that more accurately models what we want to control. Suggested-by: Michael Kerrisk <mtk.manpages@googlemail.com> Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
* pipe: adjust minimum pipe size to 1 pageJens Axboe2010-06-031-7/+1
| | | | | | | | We don't need to pages to guarantee the POSIX requirement that upto a page size write must be atomic to an empty pipe. Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
* Merge branch 'master' into for-linusJens Axboe2010-06-011915-34060/+119606
|\ | | | | | | | | | | | | Conflicts: fs/pipe.c Signed-off-by: Jens Axboe <jaxboe@fusionio.com>
| * Linux 2.6.35-rc1Linus Torvalds2010-05-301-2/+2
| | | | | | | | .. and thus endeth the merge window.
| * Merge branch 'slub/urgent' of ↵Linus Torvalds2010-05-302-29/+15
| |\ | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6 * 'slub/urgent' of git://git.kernel.org/pub/scm/linux/kernel/git/penberg/slab-2.6: SLUB: Allow full duplication of kmalloc array for 390 slub: move kmem_cache_node into it's own cacheline
| | * SLUB: Allow full duplication of kmalloc array for 390Christoph Lameter2010-05-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit 756dee75872a2a764b478e18076360b8a4ec9045 ("SLUB: Get rid of dynamic DMA kmalloc cache allocation") makes S390 run out of kmalloc caches. Increase the number of kmalloc caches to a safe size. Cc: <stable@kernel.org> [ .33 and .34 ] Reported-by: Heiko Carstens <heiko.carstens@de.ibm.com> Tested-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
| | * slub: move kmem_cache_node into it's own cachelineAlexander Duyck2010-05-242-28/+14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch is meant to improve the performance of SLUB by moving the local kmem_cache_node lock into it's own cacheline separate from kmem_cache. This is accomplished by simply removing the local_node when NUMA is enabled. On my system with 2 nodes I saw around a 5% performance increase w/ hackbench times dropping from 6.2 seconds to 5.9 seconds on average. I suspect the performance gain would increase as the number of nodes increases, but I do not have the data to currently back that up. Bugzilla-Reference: http://bugzilla.kernel.org/show_bug.cgi?id=15713 Cc: <stable@kernel.org> Reported-by: Alex Shi <alex.shi@intel.com> Tested-by: Alex Shi <alex.shi@intel.com> Acked-by: Yanmin Zhang <yanmin_zhang@linux.intel.com> Acked-by: Christoph Lameter <cl@linux-foundation.org> Signed-off-by: Alexander Duyck <alexander.h.duyck@intel.com> Signed-off-by: Pekka Enberg <penberg@cs.helsinki.fi>
| * | Merge branch 'core-fixes-for-linus' of ↵Linus Torvalds2010-05-301-0/+7
| |\ \ | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: mutex: Fix optimistic spinning vs. BKL
| | * | mutex: Fix optimistic spinning vs. BKLTony Breeds2010-05-191-0/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, we can hit a nasty case with optimistic spinning on mutexes: CPU A tries to take a mutex, while holding the BKL CPU B tried to take the BLK while holding the mutex This looks like a AB-BA scenario but in practice, is allowed and happens due to the auto-release on schedule() nature of the BKL. In that case, the optimistic spinning code can get us into a situation where instead of going to sleep, A will spin waiting for B who is spinning waiting for A, and the only way out of that loop is the need_resched() test in mutex_spin_on_owner(). This patch fixes it by completely disabling spinning if we own the BKL. This adds one more detail to the extensive list of reasons why it's a bad idea for kernel code to be holding the BKL. Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Acked-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: <stable@kernel.org> LKML-Reference: <20100519054636.GC12389@ozlabs.org> [ added an unlikely() attribute to the branch ] Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds2010-05-308-16/+45
| |\ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf tui: Fix last use_browser problem related to .perfconfig perf symbols: Add the build id cache to the vmlinux path perf tui: Reset use_browser if stdout is not a tty ring-buffer: Move zeroing out excess in page to ring buffer code ring-buffer: Reset "real_end" when page is filled
| | * \ \ Merge branch 'tip/perf/core' of ↵Ingo Molnar2010-05-292-8/+17
| | |\ \ \ | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-trace into perf/urgent
| | | * | | ring-buffer: Move zeroing out excess in page to ring buffer codeSteven Rostedt2010-05-252-8/+9
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently the trace splice code zeros out the excess bytes in the page before sending it off to userspace. This is to make sure userspace is not getting anything it should not be when reading the pages, because the excess data was never initialized to zero before writing (for perfomance reasons). But the splice code has no business in doing this work, it should be done by the ring buffer. With the latest changes for recording lost events, the splice code gets it wrong anyway. Move the zeroing out of excess bytes into the ring buffer code. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| | | * | | ring-buffer: Reset "real_end" when page is filledSteven Rostedt2010-05-251-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The code to store the "lost events" requires knowing the real end of the page. Since the 'commit' includes the padding at the end of a page a "real_end" variable was used to keep track of the end not including the padding. If events were lost, the reader can place the count of events in the padded area if there is enough room. The bug this patch fixes is that when we fill the page we do not reset the real_end variable, and if the writer had wrapped a few times, the real_end would be incorrect. This patch simply resets the real_end if the page was filled. Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| | * | | | perf tui: Fix last use_browser problem related to .perfconfigArnaldo Carvalho de Melo2010-05-271-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When we moved to using ~/.perfconfig to set the value of use_browser, it changed from a boolean to an int so that the convention used for use_pager was followed. That convention is: -1: unspecified, that is what use_{browser,pager} is initialized 0: Don't use the browser (should be TUI), because was explicitely set to 0/off/false on ~/.perfconfig [tui] cmd =, or because we're redirecting the stdout to a file or piping it to some other command (!isatty()). 1: Use the TUI Some code was not properly audited and continued testing it as a boolean, this seems to be the last one. Reported-by: Frédéric Weisbecker <fweisbec@gmail.com> Tested-by: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * | | | perf symbols: Add the build id cache to the vmlinux pathArnaldo Carvalho de Melo2010-05-263-6/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | So that if the kernel DSO has a build id because record inserted it in the perf.data build id table in the header, or a BUILD_ID event was inserted in the stream, we first look at the build id cache ($HOME/.debug/). If we find it there, try to use it, allowing offline annotation in addition to 'perf report'. Reported-by: Stephane Eranian <eranian@google.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| | * | | | perf tui: Reset use_browser if stdout is not a ttyArnaldo Carvalho de Melo2010-05-262-1/+2
| | |/ / / | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The newt initialization routines weren't being called because the output was a file (perf annotate > /tmp/bla) but use_browser was still 1, because ~/.perfconfig had it as 'on', so, later on newt routines segfaulted. Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Paul Mackerras <paulus@samba.org> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Stephane Eranian <eranian@google.com> Cc: Tom Zanussi <tzanussi@gmail.com> LKML-Reference: <new-submission> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
| * | | | ia64: revert __node_random additionLinus Torvalds2010-05-301-17/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This partially reverts commit 4ec37de89d8c758ee8115e0e64b3f994910789ee ("[IA64] Fix build breakage"), since the commit that made it necessary got reverted earlier (see commit 35926ff5fba8, 'Revert "cpusets: randomize node rotor used in cpuset_mem_spread_node()"') Even if we ever re-introduce this, there is no reason to make __node_random be some architecture-specific function. Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
| * | | | Merge branch 'for-linus' of ↵Linus Torvalds2010-05-307-82/+500
| |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mszeredi/fuse: mm: export generic_pipe_buf_*() to modules fuse: support splice() reading from fuse device fuse: allow splice to move pages mm: export remove_from_page_cache() to modules mm: export lru_cache_add_*() to modules fuse: support splice() writing to fuse device fuse: get page reference for readpages fuse: use get_user_pages_fast() fuse: remove unneeded variable
| | * | | | mm: export generic_pipe_buf_*() to modulesMiklos Szeredi2010-05-261-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is needed by fuse device code which wants to create pipe buffers. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
| | * | | | fuse: support splice() reading from fuse deviceMiklos Szeredi2010-05-251-41/+187
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allow userspace filesystem implementation to use splice() to read from the fuse device. The userspace filesystem can now transfer data coming from a WRITE request to an arbitrary file descriptor (regular file, block device or socket) without having to go through a userspace buffer. The semantics of using splice() to read messages are: 1) with a single splice() call move the whole message from the fuse device to a temporary pipe 2) read the header from the pipe and determine the message type 3a) if message is a WRITE then splice data from pipe to destination 3b) else read rest of message to userspace buffer Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
| | * | | | fuse: allow splice to move pagesMiklos Szeredi2010-05-253-15/+167
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When splicing buffers to the fuse device with SPLICE_F_MOVE, try to move pages from the pipe buffer into the page cache. This allows populating the fuse filesystem's cache without ever touching the page contents, i.e. zero copy read capability. The following steps are performed when trying to move a page into the page cache: - buf->ops->confirm() to make sure the new page is uptodate - buf->ops->steal() to try to remove the new page from it's previous place - remove_from_page_cache() on the old page - add_to_page_cache_locked() on the new page If any of the above steps fail (non fatally) then the code falls back to copying the page. In particular ->steal() will fail if there are external references (other than the page cache and the pipe buffer) to the page. Also since the remove_from_page_cache() + add_to_page_cache_locked() are non-atomic it is possible that the page cache is repopulated in between the two and add_to_page_cache_locked() will fail. This could be fixed by creating a new atomic replace_page_cache_page() function. fuse_readpages_end() needed to be reworked so it works even if page->mapping is NULL for some or all pages which can happen if the add_to_page_cache_locked() failed. A number of sanity checks were added to make sure the stolen pages don't have weird flags set, etc... These could be moved into generic splice/steal code. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
| | * | | | mm: export remove_from_page_cache() to modulesMiklos Szeredi2010-05-251-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is needed to enable moving pages into the page cache in fuse with splice(..., SPLICE_F_MOVE). Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
| | * | | | mm: export lru_cache_add_*() to modulesMiklos Szeredi2010-05-251-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is needed to enable moving pages into the page cache in fuse with splice(..., SPLICE_F_MOVE). Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
| | * | | | fuse: support splice() writing to fuse deviceMiklos Szeredi2010-05-252-32/+148
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Allow userspace filesystem implementation to use splice() to write to the fuse device. The semantics of using splice() are: 1) buffer the message header and data in a temporary pipe 2) with a *single* splice() call move the message from the temporary pipe to the fuse device The READ reply message has the most interesting use for this, since now the data from an arbitrary file descriptor (which could be a regular file, a block device or a socket) can be tranferred into the fuse device without having to go through a userspace buffer. It will also allow zero copy moving of pages. One caveat is that the protocol on the fuse device requires the length of the whole message to be written into the header. But the length of the data transferred into the temporary pipe may not be known in advance. The current library implementation works around this by using vmplice to write the header and modifying the header after splicing the data into the pipe (error handling omitted): struct fuse_out_header out; iov.iov_base = &out; iov.iov_len = sizeof(struct fuse_out_header); vmsplice(pip[1], &iov, 1, 0); len = splice(input_fd, input_offset, pip[1], NULL, len, 0); /* retrospectively modify the header: */ out.len = len + sizeof(struct fuse_out_header); splice(pip[0], NULL, fuse_chan_fd(req->ch), NULL, out.len, flags); This works since vmsplice only saves a pointer to the data, it does not copy the data itself. Since pipes are currently limited to 16 pages and messages need to be spliced atomically, the length of the data is limited to 15 pages (or 60kB for 4k pages). Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
| | * | | | fuse: get page reference for readpagesMiklos Szeredi2010-05-251-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Acquire a page ref on pages in ->readpages() and release them when the read has finished. Not acquiring a reference didn't seem to cause any trouble since the page is locked and will not be kicked out of the page cache during the read. However the following patches will want to remove the page from the cache so a separate ref is needed. Making the reference in req->pages explicit also makes the code easier to understand. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
| | * | | | fuse: use get_user_pages_fast()Miklos Szeredi2010-05-252-8/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace uses of get_user_pages() with get_user_pages_fast(). It looks nicer and should be faster in most cases. Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
| | * | | | fuse: remove unneeded variableDan Carpenter2010-05-251-2/+2
| | | |_|/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | "map" isn't needed any more after: 0bd87182d3ab18 "fuse: fix kunmap in fuse_ioctl_copy_user" Signed-off-by: Dan Carpenter <error27@gmail.com> Signed-off-by: Miklos Szeredi <mszeredi@suse.cz>
| * | | | Merge branch 'for-linus' of ↵Linus Torvalds2010-05-301-4/+5
| |\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-kconfig * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/rostedt/linux-2.6-kconfig: kconfig: Hide error output in find command in streamline_config.pl kconfig: Fix typo in comment in streamline_config.pl kconfig: Make a variable local in streamline_config.pl
| | * | | | kconfig: Hide error output in find command in streamline_config.plToralf Förster2010-05-281-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Finding the list of Makefiles in streamline-config should not report errors. Also move the "chomp" to the @makefiles array instead of doing it in the for loop. This is more efficient, and does not make it any less readable by C programmers. Signed-off-by: Toralf Foerster <toralf.foerster@gmx.de> LKML-Reference: <201005262022.02928.toralf.foerster@gmx.de> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| | * | | | kconfig: Fix typo in comment in streamline_config.plToralf Foerster2010-05-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Toralf Foerster <toralf.foerster@gmx.de> LKML-Reference: <201005281025.52753.toralf.foerster@gmx.de> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| | * | | | kconfig: Make a variable local in streamline_config.plToralf Foerster2010-05-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Proper perl requires that local variables should be declared with 'my', otherwise this may produce errors. Signed-off-by: Toralf Foerster <toralf.foerster@gmx.de> LKML-Reference: <201005281025.00358.toralf.foerster@gmx.de> Signed-off-by: Steven Rostedt <rostedt@goodmis.org>
| * | | | | Merge branch 'for-next' of ↵Linus Torvalds2010-05-3062-1251/+7999
| |\ \ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6 * 'for-next' of git://git.kernel.org/pub/scm/linux/kernel/git/sameo/mfd-2.6: (47 commits) mfd: Rename twl5031 sih modules mfd: Storage class for timberdale should be before const qualifier mfd: Remove unneeded and dangerous clearing of clientdata mfd: New AB8500 driver gpio: Fix inverted rdc321x gpio data out registers mfd: Change rdc321x resources flags to IORESOURCE_IO mfd: Move pcf50633 irq related functions to its own file. mfd: Use threaded irq for pcf50633 mfd: pcf50633-adc: Fix potential race in pcf50633_adc_sync_read mfd: Fix pcf50633 bitfield logic in interrupt handler gpio: rdc321x needs to select MFD_CORE mfd: Use menuconfig for quicker config editing ARM: AB3550 board configuration and irq for U300 mfd: AB3550 core driver mfd: AB3100 register access change to abx500 API mfd: Renamed ab3100.h to abx500.h gpio: Add TC35892 GPIO driver mfd: Add Toshiba's TC35892 MFD core mfd: Delay to mask tsc irq in max8925 mfd: Remove incorrect wm8350 kfree ...
| | * | | | | mfd: Rename twl5031 sih modulesIlkka Koskinen2010-05-281-5/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the names of twl5031 specific sih modules to match the documentation. Signed-off-by: Ilkka Koskinen <ilkka.koskinen@nokia.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
| | * | | | | mfd: Storage class for timberdale should be before const qualifierTobias Klauser2010-05-281-10/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The C99 specification states in section 6.11.5: The placement of a storage-class specifier other than at the beginning of the declaration specifiers in a declaration is an obsolescent feature. Signed-off-by: Tobias Klauser <tklauser@distanz.ch> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
| | * | | | | mfd: Remove unneeded and dangerous clearing of clientdataWolfram Sang2010-05-282-3/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Unlike real i2c-devices which get detached from the driver, dummy-devices get truly unregistered. So, there has never been a need to clear the clientdata because the device will go away anyhow. For the occasions fixed here, clearing clientdata was even dangerous as the structure was freed already. Signed-off-by: Wolfram Sang <w.sang@pengutronix.de> Acked-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
| | * | | | | mfd: New AB8500 driverRabin Vincent2010-05-288-477/+712
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add a new driver to support the AB8500 Power Management chip, replacing the current AB4500. The new driver replaces the old one, instead of an incremental modification, because this is a substantial overhaul including: - Split of the driver into -core and -spi portions, to allow another interface layer to be added - Addition of interrupt support - Switch to MFD core API for handling subdevices - Simplification of the APIs to remove a redundant block parameter - Rename of the APIs and macros from ab4500_* to ab8500_* - Rename of the files from ab4500* to ab8500* - Change of the driver name from ab4500 to ab8500 Acked-by: Linus Walleij <linus.walleij@stericsson.com> Acked-by: Srinidhi Kasagar <srinidhi.kasagar@stericsson.com> Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
| | * | | | | gpio: Fix inverted rdc321x gpio data out registersFlorian Fainelli2010-05-281-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | rdc_gpio_set_value_impl has the gpio data registers 1 and 2 inverted, fix this. Signed-off-by: Bernhard Loos <bernhardloos@gmail.com> Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
| | * | | | | mfd: Change rdc321x resources flags to IORESOURCE_IOFlorian Fainelli2010-05-283-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The rdc321x southbridge PCI device has no MEM PCI resources that we could pass to mfd_add_devices. Since 33254dd5, mfd_add_device checks for the mem_base argument that we set to NULL. Changing the resources passed to our MFD cells from IORESOURCE_MEM to IORESOURCE_IO fixes that. Since we use those resources as offsets to the PCI configuration space base address of the southbridge device this is also more adequate. Signed-off-by: Florian Fainelli <florian@openwrt.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
| | * | | | | mfd: Move pcf50633 irq related functions to its own file.Lars-Peter Clausen2010-05-283-294/+330
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This reduces code clutter a bit and will ease an migration to genirq. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
| | * | | | | mfd: Use threaded irq for pcf50633Lars-Peter Clausen2010-05-282-49/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Use threaded oneshot irq handler instead of normal irq handler and a workqueue. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
| | * | | | | mfd: pcf50633-adc: Fix potential race in pcf50633_adc_sync_readLars-Peter Clausen2010-05-281-24/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently it's not guaranteed that request struct is not already freed when reading from it. Fix this by moving synced request related fields from the pcf50633_adc_request struct to its own struct and store it on the functions stack. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
| | * | | | | mfd: Fix pcf50633 bitfield logic in interrupt handlerLars-Peter Clausen2010-05-281-4/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Those constants are alreay bitfields. Signed-off-by: Lars-Peter Clausen <lars@metafoo.de> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
| | * | | | | gpio: rdc321x needs to select MFD_CORERandy Dunlap2010-05-281-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix rdc321x-southbridge build: GPIO_RDC321X needs to select MFD_CORE so that the core is built at the same (or higher) tristate level. rdc321x-southbridge.c:(.devinit.text+0x6103): undefined reference to `mfd_add_devices' rdc321x-southbridge.c:(.devexit.text+0xe5f): undefined reference to `mfd_remove_devices' Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Cc: Florian Fainelli <florian@openwrt.org> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
| | * | | | | mfd: Use menuconfig for quicker config editingRandy Dunlap2010-05-281-2/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Change MFD 'menu' to 'menuconfig' to facilitate easy (one-click) disabling of all MFD drivers. Signed-off-by: Randy Dunlap <randy.dunlap@oracle.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
| | * | | | | ARM: AB3550 board configuration and irq for U300Mattias Wallin2010-05-282-0/+62
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch adds the i2c board configuration needed for the Mixed Signal chip AB3550. It also adds the irq numbers needed for the irq_chip implementation. Signed-off-by: Mattias Wallin <mattias.wallin@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
| | * | | | | mfd: AB3550 core driverMattias Wallin2010-05-283-0/+1416
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a core driver for the AB3550 mixed-signal circuit found in the ST-Ericsson U300 platforms. This driver is a singleton proxy for all access to the AB3550 sub functionality drivers which can be added on top of this one: RTC, regulators, battery and system power control, vibrator, LEDs and an ALSA codec. Signed-off-by: Mattias Wallin <mattias.wallin@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
| | * | | | | mfd: AB3100 register access change to abx500 APIMattias Wallin2010-05-288-92/+390
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The interface for the AB3100 is changed to make way for the ABX500 family of chips: AB3550, AB5500 and future ST-Ericsson Analog Baseband chips. The register access functions are moved out to a separate struct abx500_ops. In this way the interface is moved from the implementation and the sub functionality drivers can keep their interface intact when chip infrastructure and communication mechanisms changes. We also define the AB3550 device IDs and the AB3550 platform data struct and convert the catenated 32bit event to an array of 3 x 8bits. Signed-off-by: Mattias Wallin <mattias.wallin@stericsson.com> Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Samuel Ortiz <sameo@linux.intel.com>
generated by cgit v1.1 at 2024-11-01 04:28:02 +0000