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2007-07-20[CELL] cell: indexing of SPUs based on firmware vicinity propertiesArnd Bergmann
This patch links spus according to their physical position using information provided by the firmware through a special vicinity device-tree property. This property is present in current version of Malta firmware. Example of vicinity properties for a node in Malta: Node: Vicinity property contains phandles of: spe@0 [ spe@100000 , mic-tm@50a000 ] spe@100000 [ spe@0 , spe@200000 ] spe@200000 [ spe@100000 , spe@300000 ] spe@300000 [ spe@200000 , bif0@512000 ] spe@80000 [ spe@180000 , mic-tm@50a000 ] spe@180000 [ spe@80000 , spe@280000 ] spe@280000 [ spe@180000 , spe@380000 ] spe@380000 [ spe@280000 , bif0@512000 ] Only spe@* have a vicinity property (e.g., bif0@512000 and mic-tm@50a000 do not have it). Signed-off-by: Andre Detsch <adetsch@br.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] spufs: integration of SPE affinity with the schedullerArnd Bergmann
This patch makes the scheduller honor affinity information for each context being scheduled. If the context has no affinity information, behaviour is unchanged. If there are affinity information, context is schedulled to be run on the exact spu recommended by the affinity placement algorithm. Signed-off-by: Andre Detsch <adetsch@br.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] cell: add placement computation for scheduling of affinity contextsArnd Bergmann
This patch provides the spu affinity placement logic for the spufs scheduler. Each time a gang is going to be scheduled, the placement of a reference context is defined. The placement of all other contexts with affinity from the gang is defined based on this reference context location and on a precomputed displacement offset. Signed-off-by: Andre Detsch <adetsch@br.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] spufs: extension of spu_create to support affinity definitionArnd Bergmann
This patch adds support for additional flags at spu_create, which relate to the establishment of affinity between contexts and contexts to memory. A fourth, optional, parameter is supported. This parameter represent a affinity neighbor of the context being created, and is used when defining SPU-SPU affinity. Affinity is represented as a doubly linked list of spu_contexts. Signed-off-by: Andre Detsch <adetsch@br.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] cell: add hardcoded spu vicinity information for QS20Arnd Bergmann
This patch allows the use of spu affinity on QS20, whose original FW does not provide affinity information. This is done through two hardcoded arrays, and by reading the reg property from each spu. Signed-off-by: Andre Detsch <adetsch@br.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] cell: add vicinity information on spusArnd Bergmann
This patch adds affinity data to each spu instance. A doubly linked list is created, meant to connect the spus in the physical order they are placed in the BE. SPUs near to memory should be marked as having memory affinity. Adjustments of the fields acording to FW properties is done in separate patches, one for CPBW, one for Malta (patch for Malta under testing). Signed-off-by: Andre Detsch <adetsch@br.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] cell: add per BE structure with info about its SPUsArnd Bergmann
Addition of a spufs-global "cbe_info" array. Each entry contains information about one Cell/B.E. node, namelly: * list of spus (both free and busy spus are in this list); * list of free spus (replacing the static spu_list from spu_base.c) * number of spus; * number of reserved (non scheduleable) spus. SPE affinity implementation actually requires only access to one spu per BE node (since it implements its own pointer to walk through the other spus of the ring) and the number of scheduleable spus (n_spus - non_sched_spus) However having this more general structure can be useful for other functionalities, concentrating per-cbe statistics / data. Signed-off-by: Andre Detsch <adetsch@br.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] spufs: use find_first_bit() instead of sched_find_first_bit()Masato Noguchi
spu_sched->bitmap has MAX_PRIO(=140) width in bits.However, since ff80a77f20f811c0cc5b251d0f657cbc6f788385, sched_find_first_bit() only supports 100-bit bitmaps. Thus, spu_sched->bitmap should be treated by generic find_first_bit(). Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] spufs: remove unused file argument from spufs_run_spu()Jeremy Kerr
From: Sebastian Siewior <cbe-oss-dev@ml.breakpoint.cc> The 'file' argument is unused in spufs_run_spu(). This change removes it. Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] spufs: change decrementer restore timingMasato Noguchi
The SPU decrementer should be restored after the LSCSA DMA has completed. Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] spufs: dont halt decrementer at restore step 47Masato Noguchi
No need to halt the SPE decrementer at context restore step 47, it will be done in step 7. Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] spufs: limit saving MFC_CNTL bitsMasato Noguchi
At save step 8, the mfc control register in the CSA should be written _only_ with Sc and Sm bits (at least MFC_CNTL[Dh] should be set to 0) Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] spufs: fix read and write for decr_status fileMasato Noguchi
The decr_status in the LSCSA is valid only in the sequence of context restore. Thus, it's nonsense to read and/or write it through spufs. This patch changes decr_status node to access MFC_CNTL[Ds] in the CSA. Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] spufs: fix decr_status meaningsMasato Noguchi
The decr_status in the LSCSA is confusedly used as two meanings: * SPU decrementer was running * SPU decrementer was wrapped as a result of adjust and the code to set decr_status is missing. This patch fixes these problems by using the decr_status argument as a set of flags. This requires a rebuild of the shipped spu_restore code. Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] spufs: remove needless context save/restore codeMasato Noguchi
The following steps are not needed in the SPE context save/restore paths: Save Step 12: save_mfc_decr() save suspend_time to CSA (It will be done by step 14) save ch 7 (decrementer value will be saved in LSCSA by spe-side step 10) Restore Step 59: restore_ch_part1() restore ch 1 (it will be done by spe-side step 15) This change removes the unnecessary steps. Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] spufs: fix array size of channel indexJeremy Kerr
Based on a fix from Masato Noguchi <Masato.Noguchi@jp.sony.com>. Remove the (incorrect) array size declarations in the spufs channel arrays, and use ARRAY_SIZE rather than hardcoded values. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] spufs: make sure context are scheduled again after spu_acquire_savedChristoph Hellwig
Currently a process is removed from the physical spu when spu_acquire_saved is saved but never put back. This patch adds a new spu_release_saved that is to be paired with spu_acquire_saved and put the process back if it has been in RUNNABLE state before. Niether Jeremy not be are entirely happy about this exact patch because it adds another spu_activate call outside of the owner thread, but I feel this is the best short-term fix we can come up with. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] spufs: add spu stats in sysfs and ctx stat file in spufsAndre Detsch
This patch exports per-context statistics in spufs as long as spu statistics in sysfs. It was formed by merging: "spufs: add spu stats in sysfs" From: Christoph Hellwig "spufs: add stat file to spufs" From: Christoph Hellwig "spufs: fix libassist accounting" From: Jeremy Kerr "spusched: fix spu utilization statistics" From: Luke Browning And some adjustments by myself, after suggestions on cbe-oss-dev. Having separate patches was making the review process harder than it should, as we end up integrating spus and ctx statistics accounting much more than it was on the first implementation. Signed-off-by: Andre Detsch <adetsch@br.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] spufs: Remove spurious WARN_ON for spu_deactivate for NOSCHED contextsJeremy Kerr
In 6cbf93960e64f313f6e247cbca7afaa50e3ee2c we added a WARN_ON for calling spu_deactivate on contexts created with the SPU_CREATE_NOSCHED flag. However, all NOSCHED contexts will need to be deactivated when the context is destroyed, so this gives a spurious warning when any NOSCHED context is closed. This change removes the WARN_ON. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] spufs: Make signal-notification files readonly for NOSCHED contextsJeremy Kerr
Reading from the signal{1,2} files requires a spu_acquire_saved, so make these files write-only for contexts created with SPU_CREATE_NOSCHED. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] spufs: Avoid unexpectedly restaring MFC during context saveKazunori Asayama
The current SPU context saving procedure in SPUFS unexpectedly restarts MFC when halting decrementer, because MFC_CNTL[Dh] is set without MFC_CNTL[Sm]. This bug causes, for example, saving broken DMA queues. Here is a patch to fix the problem. Signed-off-by: Kazunori Asayama <asayama@sm.sony.co.jp> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] spufs: remove section mismatch warningSebastian Siewior
WARNING: arch/powerpc/platforms/cell/spufs/spufs.o(.init.text+0x158): Section mismatch: reference to .exit.text:.spu_sched_exit (between '.init_module' and '.spu_sched_init') was introduced by c99c1994a2bb9493b4ac372b2b6ee2606d291171 This patch removes the warning. Cc: Christoph Hellwig <hch@lst.de> Signed-off-by: Sebastian Siewior <sebastian@breakpoint.cc> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] add support for MSI on Axon-based Cell systemsMichael Ellerman
This patch adds support for the setup and decoding of MSIs on Axon-based Cell systems, using the MSIC mechanism. This involves setting up an area of BE memory which the Axon then uses as a FIFO for MSI messages. When one or more MSIs are decoded by the MSIC we receive an interrupt on the MPIC, and the MSI messages are written into the FIFO. At the moment we use a 64KB FIFO, one per MSIC/BE. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] saving spus information for kexec crashAndre Detsch
This patch adds support for investigating spus information after a kernel crash event, through kdump vmcore file. Implementation is based on xmon code, but the new functionality was kept independent from xmon. Signed-off-by: Lucio Jose Herculano Correia <luciojhc@br.ibm.com> Signed-off-by: Andre Detsch <adetsch@br.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] allow linux to map Cell regs on legacy SLOF tree.Jean-Christophe DUBOIS
The platforms missing the "cpus" property in the "be" node are mono-Cell platforms such as CAB or Getaway. Therefore it is possible to assume that if there is no "cpus" properties under the "be" node then we can safely return the "device node" without more checking. This is a bit hacky but ... it allows it to work on these platforms. Signed-off-by: Jean-Christophe DUBOIS <jcd@tribudubois.net> Acked-by: Christian Krafft <krafft@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] fix cbe_thermal for legacy SLOF tree.Jean-Christophe DUBOIS
Previous patch changed based on Christian Krafft's comment. On some legacy SLOF tree the generic code is unable to ioremap some Cell BE registers. Therefore the "generic" functions are returning a NULL pointer, triggering a crash on such platforms. Let's handle this more gracefully. Signed-off-by: Jean-Christophe DUBOIS <jcd@tribudubois.net> Acked-by: Christian Kraff <krafft@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] fix cbe_cpufreq for legacy SLOF tree.Jean-Christophe DUBOIS
Previous patch changed based on Christian Krafft's comment. On some legacy SLOF tree the generic code is unable to ioremap some Cell BE registers. Therefore the "generic" functions are returning a NULL pointer, triggering a crash on such platforms. Let's handle this more gracefully. Signed-off-by: Jean-Christophe DUBOIS <jcd@tribudubois.net> Acked-by: Christian Kraff <krafft@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] cbe_cpufreq: reorganize codeChristian Krafft
This patch reorganizes the code of the driver into three files. Two cbe_cpufreq_pmi.c and cbe_cpufreq_pervasive.c care about hardware. cbe_cpufreq.c contains the logic. There is no changed behaviour, except that the PMI related function is now located in a seperate module cbe_cpufreq_pmi. This module will be required by cbe_cpufreq, if CONFIG_CBE_CPUFREQ_PMI has been set. Signed-off-by: Christian Krafft <krafft@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] cbe_cpufreq: fix minor issuesChristian Krafft
Minor issues have been fixed: * added a missing call to of_node_put() * signedness of a function parameter * added some line breaks * changed global pmi_frequency_limit to a per node pmi_slow_mode_limit array Signed-off-by: Christian Krafft <krafft@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] cbe_cpufreq: fix initializationChristian Krafft
This patch fixes the initialization of the cbe_cpufreq driver. The code that initializes the PMI related functions was called per cpu: * registering cpufreq notifier block * registering a pmi handler This ends in a bug that the notifier block gets called in an endless loop. The initialization code is being put to the module init code path by this patch. This way it only gets called once. Signed-off-by: Christian Krafft <krafft@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] cbe_cpufreq: fix latency measurementChristian Krafft
This patch fixes the debug code that calculates the transition time when changing the slow modes on a Cell BE cpu. Signed-off-by: Christian Krafft <krafft@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20[CELL] pmi: remove support for mutiple devices.Christian Krafft
The pmi driver got simplified by removing support for multiple devices. As there is no more than one pmi device per maschine, there is no need to specify the device for listening and sending messages. This way the caller (cbe_cpufreq) doesn't need to scan the device tree. When registering the handler on a board without a pmi interface, pmi.c will just return -ENODEV. The patch that fixed the breakage of cell_defconfig has been broken out of the earlier version of this patch. So this is the version that applies cleanly on top of it. Signed-off-by: Christian Krafft <krafft@de.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
2007-07-20mm: Remove slab destructors from kmem_cache_create().Paul Mundt
Slab destructors were no longer supported after Christoph's c59def9f222d44bb7e2f0a559f2906191a0862d7 change. They've been BUGs for both slab and slub, and slob never supported them either. This rips out support for the dtor pointer from kmem_cache_create() completely and fixes up every single callsite in the kernel (there were about 224, not including the slab allocator definitions themselves, or the documentation references). Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2007-07-19fix spufs build after ->fault changesChristoph Hellwig
83c54070ee1a2d05c89793884bea1a03f2851ed4 broke spufs by incorrectly updating the code, this patch gets it to compile again. It's probably still broken due to the scheduler changes, but this at least makes sure cell kernels can still be built. Signed-off-by: Christoph Hellwig <hch@lst.de> Cc: Arnd Bergmann <arnd@arndb.de> Acked-by: Geoff Levand <geoffrey.levand@am.sony.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Nick Piggin <nickpiggin@yahoo.com.au> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-19mm: fault feedback #2Nick Piggin
This patch completes Linus's wish that the fault return codes be made into bit flags, which I agree makes everything nicer. This requires requires all handle_mm_fault callers to be modified (possibly the modifications should go further and do things like fault accounting in handle_mm_fault -- however that would be for another patch). [akpm@linux-foundation.org: fix alpha build] [akpm@linux-foundation.org: fix s390 build] [akpm@linux-foundation.org: fix sparc build] [akpm@linux-foundation.org: fix sparc64 build] [akpm@linux-foundation.org: fix ia64 build] Signed-off-by: Nick Piggin <npiggin@suse.de> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ian Molton <spyro@f2s.com> Cc: Bryan Wu <bryan.wu@analog.com> Cc: Mikael Starvik <starvik@axis.com> Cc: David Howells <dhowells@redhat.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Greg Ungerer <gerg@uclinux.org> Cc: Matthew Wilcox <willy@debian.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp> Cc: Richard Curnow <rc@rc0.org.uk> Cc: William Lee Irwin III <wli@holomorphy.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp> Cc: Chris Zankel <chris@zankel.net> Acked-by: Kyle McMartin <kyle@mcmartin.ca> Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Acked-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> [ Still apparently needs some ARM and PPC loving - Linus ] Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-17Cell: Draw SPE helper penguin logosGeert Uytterhoeven
Let spu_management_ops.enumerate_spus() return the number of found SPEs and use that information to draw some little helper penguin logos. Signed-off-by: Geert Uytterhoeven <Geert.Uytterhoeven@sonycom.com> Signed-off-by: Geoff Levand <geoffrey.levand@am.sony.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-By: James Simmons <jsimmons@infradead.org> Cc: "Antonino A. Daplas" <adaplas@pol.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-07-11Merge branch 'for-2.6.23' into mergePaul Mackerras
2007-07-03[POWERPC] spufs: Save dma_tagstatus_R in CSAKazunori Asayama
The function backing_ops->read_mfc_tagstatus() doesn't return a correct value because the dma_tagstatus_R register isn't saved in CSA. This fixes the problem. Signed-off-by: Kazunori Asayama <asayama@sm.sony.co.jp> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-03[POWERPC] spufs: Fix lost events in poll/epoll on mfcKazunori Asayama
When waiting for I/O events on mfc in an SPU context by using poll/epoll syscalls, some of the events can be lost because of wrong order of poll_wait and MFC status checks in the spufs_mfc_poll function and non-atomic update of tagwait. This fixes the problem. Signed-off-by: Kazunori Asayama <asayama@sm.sony.co.jp> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-03[POWERPC] spufs: Add spu stats in sysfsChristoph Hellwig
Export spu statistics in sysfs. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-03[POWERPC] spusched: Fix runqueue corruptionChristoph Hellwig
spu_activate can be called from multiple threads at the same time on behalf of the same spu context. We need to make sure to only add it once to avoid runqueue corruption. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-03[POWERPC] spusched: Disable tick when not neededChristoph Hellwig
Only enable the scheduler tick if we have any context waiting to be scheduled. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-03[POWERPC] spufs: Fix libassist accountingJeremy Kerr
We're currently too permissive with counting libassist calls - fix the check on the SPE stop-and-signal status. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-03[POWERPC] spufs: Add stat file to spufsChristoph Hellwig
Export per-context statistics in spufs. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-03[POWERPC] spufs: Implement /proc/spu_loadavgChristoph Hellwig
Provide load average information for spu context. The format is identical to /proc/loadavg, which is also where a lot of code and concepts is borrowed from. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-03[POWERPC] spufs: Add tid fileChristoph Hellwig
The new tid file contains the ID of the thread currently running the context, if any. This is used so that the new spu-top and spu-ps tools can find the thread in /proc. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-03[POWERPC] spufs: Trivial whitespace fixesJeremy Kerr
Remove redundant whitespace in arch/powerpc/platforms/cell/spufs/ Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-03[POWERPC] spufs: Remove spufs_dir_inode_operationsJeremy Kerr
spufs_dir_inode_operations is exactly the same as simple_dir_inode_operations. Use that instead. Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-03[POWERPC] spusched: No preemption for nosched contextsChristoph Hellwig
And last but not least we need to make sure the scheduler tick never preempts a nosched context. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
2007-07-03[POWERPC] spusched: Catch nosched contexts in spu_deactivateChristoph Hellwig
spu_deactivate should never be called for nosched contets. Put in a check so we can print a stacktrace and exit early in case it happes erroneously. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Signed-off-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>