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* Create the ZONE_MOVABLE zoneMel Gorman2007-07-177-10/+260
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The following 8 patches against 2.6.20-mm2 create a zone called ZONE_MOVABLE that is only usable by allocations that specify both __GFP_HIGHMEM and __GFP_MOVABLE. This has the effect of keeping all non-movable pages within a single memory partition while allowing movable allocations to be satisfied from either partition. The patches may be applied with the list-based anti-fragmentation patches that groups pages together based on mobility. The size of the zone is determined by a kernelcore= parameter specified at boot-time. This specifies how much memory is usable by non-movable allocations and the remainder is used for ZONE_MOVABLE. Any range of pages within ZONE_MOVABLE can be released by migrating the pages or by reclaiming. When selecting a zone to take pages from for ZONE_MOVABLE, there are two things to consider. First, only memory from the highest populated zone is used for ZONE_MOVABLE. On the x86, this is probably going to be ZONE_HIGHMEM but it would be ZONE_DMA on ppc64 or possibly ZONE_DMA32 on x86_64. Second, the amount of memory usable by the kernel will be spread evenly throughout NUMA nodes where possible. If the nodes are not of equal size, the amount of memory usable by the kernel on some nodes may be greater than others. By default, the zone is not as useful for hugetlb allocations because they are pinned and non-migratable (currently at least). A sysctl is provided that allows huge pages to be allocated from that zone. This means that the huge page pool can be resized to the size of ZONE_MOVABLE during the lifetime of the system assuming that pages are not mlocked. Despite huge pages being non-movable, we do not introduce additional external fragmentation of note as huge pages are always the largest contiguous block we care about. Credit goes to Andy Whitcroft for catching a large variety of problems during review of the patches. This patch creates an additional zone, ZONE_MOVABLE. This zone is only usable by allocations which specify both __GFP_HIGHMEM and __GFP_MOVABLE. Hot-added memory continues to be placed in their existing destination as there is no mechanism to redirect them to a specific zone. [y-goto@jp.fujitsu.com: Fix section mismatch of memory hotplug related code] [akpm@linux-foundation.org: various fixes] Signed-off-by: Mel Gorman <mel@csn.ul.ie> Cc: Andy Whitcroft <apw@shadowen.org> Signed-off-by: Yasunori Goto <y-goto@jp.fujitsu.com> Cc: William Lee Irwin III <wli@holomorphy.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Add __GFP_MOVABLE for callers to flag allocations from high memory that may ↵Mel Gorman2007-07-1719-30/+114
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | be migrated It is often known at allocation time whether a page may be migrated or not. This patch adds a flag called __GFP_MOVABLE and a new mask called GFP_HIGH_MOVABLE. Allocations using the __GFP_MOVABLE can be either migrated using the page migration mechanism or reclaimed by syncing with backing storage and discarding. An API function very similar to alloc_zeroed_user_highpage() is added for __GFP_MOVABLE allocations called alloc_zeroed_user_highpage_movable(). The flags used by alloc_zeroed_user_highpage() are not changed because it would change the semantics of an existing API. After this patch is applied there are no in-kernel users of alloc_zeroed_user_highpage() so it probably should be marked deprecated if this patch is merged. Note that this patch includes a minor cleanup to the use of __GFP_ZERO in shmem.c to keep all flag modifications to inode->mapping in the shmem_dir_alloc() helper function. This clean-up suggestion is courtesy of Hugh Dickens. Additional credit goes to Christoph Lameter and Linus Torvalds for shaping the concept. Credit to Hugh Dickens for catching issues with shmem swap vector and ramfs allocations. [akpm@linux-foundation.org: build fix] [hugh@veritas.com: __GFP_ZERO cleanup] Signed-off-by: Mel Gorman <mel@csn.ul.ie> Cc: Andy Whitcroft <apw@shadowen.org> Cc: Christoph Lameter <clameter@sgi.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Fix read/truncate raceNeilBrown2007-07-171-44/+28
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | do_generic_mapping_read currently samples the i_size at the start and doesn't do so again unless it needs to call ->readpage to load a page. After ->readpage it has to re-sample i_size as a truncate may have caused that page to be filled with zeros, and the read() call should not see these. However there are other activities that might cause ->readpage to be called on a page between the time that do_generic_mapping_read samples i_size and when it finds that it has an uptodate page. These include at least read-ahead and possibly another thread performing a read. So do_generic_mapping_read must sample i_size *after* it has an uptodate page. Thus the current sampling at the start and after a read can be replaced with a sampling before the copy-out. The same change applied to __generic_file_splice_read. Note that this fixes any race with truncate_complete_page, but does not fix a possible race with truncate_partial_page. If a partial truncate happens after do_generic_mapping_read samples i_size and before the copy_out, the nuls that truncate_partial_page place in the page could be copied out incorrectly. I think the best fix for that is to *not* zero out parts of the page in truncate_partial_page, but rather to zero out the tail of a page when increasing i_size. Signed-off-by: Neil Brown <neilb@suse.de> Cc: Jens Axboe <jens.axboe@oracle.com> Acked-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mm: remove ptep_test_and_clear_dirty and ptep_clear_flush_dirtyMartin Schwidefsky2007-07-1712-173/+0
| | | | | | | | | | Nobody is using ptep_test_and_clear_dirty and ptep_clear_flush_dirty. Remove the functions from all architectures. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* mm: remove ptep_establish()Martin Schwidefsky2007-07-175-59/+26
| | | | | | | | | | The last user of ptep_establish in mm/ is long gone. Remove the architecture primitive as well. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Hugh Dickins <hugh@veritas.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* parse error, drivers/i2c/busses/i2c-pmcmsp.cYoann Padioleau2007-07-171-1/+1
| | | | | | | Signed-off-by: Yoann Padioleau <padator@wanadoo.fr> Cc: Jean Delvare <khali@linux-fr.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'drm-patches' of ↵Linus Torvalds2007-07-172-1/+3
|\ | | | | | | | | | | | | | | ssh://master.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-patches' of ssh://master.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: drm: add idr_init to drm_stub.c drm: fix problem with SiS typedef with sisfb enabled.
| * drm: add idr_init to drm_stub.cDave Airlie2007-07-171-0/+2
| | | | | | | | | | | | Brown paper bag for me this patch chunk didn't make it in the first application Signed-off-by: Dave Airlie <airlied@linux.ie>
| * drm: fix problem with SiS typedef with sisfb enabled.Dave Airlie2007-07-171-1/+1
| | | | | | | | | | | | Reported by: Avuton Olrich <avuton@gmail.com> Signed-off-by: Dave Airlie <airlied@linux.ie>
* | Merge branch 'drm-patches' of ↵Linus Torvalds2007-07-164-312/+93
|\ \ | |/ | | | | | | | | | | | | ssh://master.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6 * 'drm-patches' of ssh://master.kernel.org/pub/scm/linux/kernel/git/airlied/drm-2.6: drm: convert drawable code to using idr drm: convert drm context code to use Linux idr
| * drm: convert drawable code to using idrDave Airlie2007-07-173-209/+60
| | | | | | | | | | | | | | | | This converts the code for allocating drawables to the Linux idr, Fixes from: Michel Dänzer <michel@tungstengraphics.com>, Kristian Høgsberg <krh@redhat.com> Signed-off-by: Dave Airlie <airlied@linux.ie>
| * drm: convert drm context code to use Linux idrDave Airlie2007-07-172-103/+33
| | | | | | | | | | | | | | | | | | This converts the drm context allocator to an idr, using the new idr interface features from Kristian. Fixes from Kristian Hoegsberg <krh@redhat.com> Signed-off-by: Dave Airlie <airlied@linux.ie>
* | Merge branch 'merge' of ↵Linus Torvalds2007-07-16280-6951/+10941
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (209 commits) [POWERPC] Create add_rtc() function to enable the RTC CMOS driver [POWERPC] Add H_ILLAN_ATTRIBUTES hcall number [POWERPC] xilinxfb: Parameterize xilinxfb platform device registration [POWERPC] Oprofile support for Power 5++ [POWERPC] Enable arbitary speed tty ioctls and split input/output speed [POWERPC] Make drivers/char/hvc_console.c:khvcd() static [POWERPC] Remove dead code for preventing pread() and pwrite() calls [POWERPC] Remove unnecessary #undef printk from prom.c [POWERPC] Fix typo in Ebony default DTS [POWERPC] Check for NULL ppc_md.init_IRQ() before calling [POWERPC] Remove extra return statement [POWERPC] pasemi: Don't auto-select CONFIG_EMBEDDED [POWERPC] pasemi: Rename platform [POWERPC] arch/powerpc/kernel/sysfs.c: Move NUMA exports [POWERPC] Add __read_mostly support for powerpc [POWERPC] Modify sched_clock() to make CONFIG_PRINTK_TIME more sane [POWERPC] Create a dummy zImage if no valid platform has been selected [POWERPC] PS3: Bootwrapper support. [POWERPC] powermac i2c: Use mutex [POWERPC] Schedule removal of arch/ppc ... Fixed up conflicts manually in: Documentation/feature-removal-schedule.txt arch/powerpc/kernel/pci_32.c arch/powerpc/kernel/pci_64.c include/asm-powerpc/pci.h and asked the powerpc people to double-check the result..
| * \ Merge branch 'for-2.6.23' into mergePaul Mackerras2007-07-11280-6951/+10940
| |\ \
| | * | [POWERPC] Create add_rtc() function to enable the RTC CMOS driverWade Farnsworth2007-07-112-0/+50
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | In order to use the RTC CMOS driver, each architecture must register a platform device for the RTC. This creates a function to register the platform device based on the RTC device node and verifies that the RTC port against the hard-coded value in asm/mc146818rtc.h. Signed-off-by: Wade Farnsworth <wfarnsworth@mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] Add H_ILLAN_ATTRIBUTES hcall numberBrian King2007-07-111-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Adds the number for the H_ILLAN_ATTRIBUTES hcall. Signed-off-by: Brian King <brking@linux.vnet.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] xilinxfb: Parameterize xilinxfb platform device registrationGrant Likely2007-07-111-13/+25
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This allows multiple xilinxfb devices to be registered and used. Signed-off-by: Grant Likely <grant.likely@secretlab.ca> cc: Andrei Konovalov <akonovalov@ru.mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] Oprofile support for Power 5++Mike Wolf2007-07-111-0/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds a new oprofile cpu type for Power 5 revision 3 chips. The new name is ppc64/power5++ and is used so that the performance counters can be set up correctly. Signed-off-by: Mike Wolf <mjw@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] Enable arbitary speed tty ioctls and split input/output speedDavid Woodhouse2007-07-101-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Adding the defines/macros activates the existing code in the tty layer and allows this platform to use the arbitary speed ioctl setting layer Signed-off-by: David Woodhouse <dwmw2@infradead.org> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] Make drivers/char/hvc_console.c:khvcd() staticAdrian Bunk2007-07-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Adrian Bunk <bunk@stusta.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] Remove dead code for preventing pread() and pwrite() callsRobert P. J. Day2007-07-101-10/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove the deactivated code for checking for pread() and pwrite() calls on the PPC-based BRIQ. Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] Remove unnecessary #undef printk from prom.cMathieu Desnoyers2007-07-101-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@polymtl.ca> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] Fix typo in Ebony default DTSLi Yang2007-07-101-2/+2
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Li Yang <leoli@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] Check for NULL ppc_md.init_IRQ() before callingSonny Rao2007-07-101-1/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Check to make sure ppc_md.init_IRQ has been set before calling it. Signed-off-by: Sonny Rao <sonny@burdell.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] Remove extra return statementManish Ahuja2007-07-101-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Found 2 instances of return one right after each other in arch_add_memory(). This removes the superfluous one. Signed-off-by: Manish Ahuja <mahuja@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] pasemi: Don't auto-select CONFIG_EMBEDDEDOlof Johansson2007-07-101-1/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Disable auto-select of CONFIG_EMBEDDED. ELECTRA_IDE selects PATA_PLATFORM which should be sufficient. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] pasemi: Rename platformOlof Johansson2007-07-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Rename the pasemi platform to "pasemi" to be in line with the platform's directory name. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] arch/powerpc/kernel/sysfs.c: Move NUMA exportsJohannes Berg2007-07-101-3/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | With !CONFIG_NUMA, these are static inlines in the header file so don't generate exports for them in that case. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] Add __read_mostly support for powerpcTony Breeds2007-07-102-0/+10
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] Modify sched_clock() to make CONFIG_PRINTK_TIME more saneTony Breeds2007-07-101-3/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When booting a current kernel with CONFIG_PRINTK_TIME enabled you'll see messages like: [ 0.000000] time_init: decrementer frequency = 188.044000 MHz [ 0.000000] time_init: processor frequency = 1504.352000 MHz [3712914.436297] Console: colour dummy device 80x25 This cause by the initialisation of tb_to_ns_scale in time_init(), suddenly the multiplication in sched_clock() now does something :). This patch modifies sched_clock() to report the offset since the machine booted so the same printk's now look like: [ 0.000000] time_init: decrementer frequency = 188.044000 MHz [ 0.000000] time_init: processor frequency = 1504.352000 MHz [ 0.000135] Console: colour dummy device 80x25 Effectivly including the uptime in printk()s. This patch makes tb_to_ns_scale and tb_to_ns_shift static and read_mostly for good measure. Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] Create a dummy zImage if no valid platform has been selectedTony Breeds2007-07-101-0/+10
| | | | | | | | | | | | | | | | | | | | | | | | | | | | This simply prevents a build error if no platform is selected. Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] PS3: Bootwrapper support.Geoff Levand2007-07-107-11/+542
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Add support to build the PS3 flash rom image and remove some unneeded lmb calls. The PS3's lv1 loader supports loading gzipped binary images from flash rom to addr zero. The loader enters the image at addr 0x100. In this implementation a bootwrapper overlay is use to arrange for the kernel to be loaded to addr zero and to have a suitable bootwrapper entry at 0x100. To construct the rom image, 0x100 bytes from offset 0x100 in the kernel is copied to the bootwrapper symbol __system_reset_kernel. The 0x100 bytes at the bootwrapper symbol __system_reset_overlay is then copied to offset 0x100. At runtime the bootwrapper program copies the 0x100 bytes at __system_reset_kernel to addr 0x100. zImage.ps3 is a wrapped image that contains a flat device tree, an lv1 compatible entry point, and an optional initrd. otheros.bld is the gzip compresed rom image built from zImage.ps3. otheros.bld is suitable for programming into the PS3 boot flash memory. Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] powermac i2c: Use mutexJohannes Berg2007-07-101-11/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Convert the semaphores in low_i2c that are used as mutexes to real mutexes. Signed-off-by: Johannes Berg <johannes@sipsolutions.net> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] Schedule removal of arch/ppcJosh Boyer2007-07-101-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The arch/ppc tree has been in a semi-nebulous "bug fix only" state for a few kernel releases now. The patch below officially declares this as of the 2.6.22 kernel release and schedules arch/ppc for removal in June of 2008. Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] Consolidate PowerPC 750 cputable featuresJosh Boyer2007-07-101-20/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The 750 CPU_FTR macros have quite a bit of duplication in them. Consolidate them to use CPU_FTRS_750 and only list the unique features for derivatives. Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] Oprofile enhanced instruction sampling supportwill schmidt2007-07-102-0/+16
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Oprofile enhanced instruction sampling support. When performing instruction sampling, the mmcra[SLOT] field can be used to more accurately identify the address of the sampled instruction. Tested on power4, js20, power5 and power5+. Signed-off-by: Will Schmidt <will_schmidt@vnet.ibm.com> cc: Maynard Johnson <maynardj@us.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] Make two xmon variables staticOlaf Hering2007-07-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | xmon_early and xmon_off are only used in this file. Signed-off-by: Olaf Hering <olaf@aepfle.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] Make the debugfs "powerpc" dir globally accessibleMichael Ellerman2007-07-103-6/+18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The prom.c debugging code creates a "powerpc" directory in debugfs, which is nice, but doesn't allow any other debugging code to stick things under "powerpc" in debugfs. So make it global. While we're there we should make the prom.c debugging code depend on CONFIG_DEBUG_FS, because it doesn't work otherwise. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] Add a check for keyboard/mouse device nodes in check_legacy_ioport()Wade Farnsworth2007-07-101-0/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The device tree for the MPC8641 HPCN does not implement the device type property for I8042 nodes. In addition to checking the I8042 node's device type, also match the keyboard and/or mouse nodes' compatible property. Signed-off-by: Wade Farnsworth <wfarnsworth@mvista.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] Add a warning to help trackdown device_node refcounting bugsMichael Ellerman2007-07-102-0/+12
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the refcount for a device node goes to 0, we call the destructor - of_node_release(). This should only happen if we've already detached the node from the device tree. So add a flag OF_DETACHED which tracks detached-ness, and if we find ourselves in of_node_release() without it set, issue a warning and don't free the device_node. To avoid warning continuously reinitialise the kref to a sane value. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] Generalise device_node flag interfaceMichael Ellerman2007-07-103-5/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The struct device_node currently has a _flags variable, although it's only used for one flag - OF_DYNAMIC. Generalise the flag accessors so we can use them with other flags in future. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] Check for the root node in of_detach_node()Michael Ellerman2007-07-101-0/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | It's not sensible to call of_detach_node() on the root node, but we should check for it just to be safe. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] Add cputable entry for PowerPC 440SPe Rev. BRoland Dreier2007-07-101-5/+15
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When adding the cputable entry for 440SPe Rev. B, we also need to adjust the existing entries for 440SP Rev. A and 440SPe Rev. B so that they look more bits of the PVR. The 440SPe Rev. B has PVR 53421891, which would match the current 440SP Rev. A pattern of 53xxx891. To distinguish between 440SP and 440SPe, we need to use the first three digits of the PVR, which are respectively 532 and 534. Signed-off-by: Roland Dreier <rolandd@cisco.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] Fix drivers/rtc/Kconfig for powerpcWade Farnsworth2007-07-101-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The powerpc arch uses CONFIG_PPC instead of CONFIG_POWERPC. This fixes drivers/rtc/Kconfig to use the correct config option. Signed-off-by: Wade Farnsworth <wfarnsworth@mvista.com> Acked-by: Jon Loeliger <jdl@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] of_serial: add port type checkingIshizaki Kou2007-07-101-3/+24
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Currently, of_serial driver supports only 8250 compatible ports, but prepares that others can easily be added. Yet unregister routine assumes port is 8250. This corrects unregister routine to check port type. Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] of_serial: Ignore unknown serial portIshizaki Kou2007-07-101-4/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Current of_serial driver assumes unknown serial port to be 8250. But this behavior may cause fatal problems when the serial port is not 8250. This corrects probe routine to ignore unknown serial port. Signed-off-by: Kou Ishizaki <kou.ishizaki@toshiba.co.jp> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] VIOTAPE: Use designated initializers for fops member structures.Robert P. J. Day2007-07-101-6/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Replace the old-style member initializers with the newer designated initializers. Signed-off-by: Robert P. J. Day <rpjday@mindspring.com> Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] Remove unused do_signal exportChristoph Hellwig2007-07-102-2/+0
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | do_signal is never used in modular code (obviously), and no other architecture exports it either. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] Fix viodasd geometry calculationsStephen Rothwell2007-07-101-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Commit a885c8c4316e1c1d2d2c8755da3f3d14f852528d that introduced the getgeo block device method changed the fallback number of sectors and introduced a bug into the fallback cylinder number calculation. Thanks to Rusty Russell for noticing this. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
| | * | [POWERPC] dts: kill hardcoded phandlesVitaly Bordug2007-07-103-75/+43
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Removed explicit linux,phandle usage. Using references and labels now in PQ and PQ2 boards currently supported in arch/powerpc. Signed-off-by: Vitaly Bordug <vitb@kernel.crashing.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Olof Johansson <olof@lixom.net> Cc: Dominik Brodowski <linux@dominikbrodowski.net> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
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