- 13 Feb, 2007 38 commits
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Carl Love authored
This is a clean up patch that includes the following changes: -Some comments were added to clarify the code based on feedback from the community. -The write_pm_cntrl() and set_count_mode() were passed a structure element from a global variable. The argument was removed so the functions now just operate on the global directly. -The set_pm_event() function call in the cell_virtual_cntr() routine was moved to a for-loop before the for_each_cpu loop Signed-off-by:
Carl Love <carll@us.ibm.com> Signed-off-by:
Maynard Johnson <mpjohn@us.ibm.com> Signed-off-by:
Arnd Bergmann <arnd.bergmann@de.ibm.com>
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Masato Noguchi authored
I found an exploit in current kernel. Currently, there is no range check about mmapping "/mem" node in spufs. Thus, an application can access privilege memory region. In case this kernel already worked on a public server, I send this information only here. If there are such servers in somewhere, please replace it, ASAP. Signed-off-by:
Masato Noguchi <Masato.Noguchi@jp.sony.com> Signed-off-by:
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Christoph Hellwig authored
For SCHED_RR tasks we can do some really trivial timeslicing. Basically we fire up a time for every scheduler tick that searches for a higher or same priority thread that is on the runqueue and if there is one context switches to it. Because we can't lock spus from timer context we actually run this from a delayed runqueue instead of a timer. A nice optimization would be to skip the actual priority bitmap search when there are less contexts than physical spus available. To implement this I need a so far unpublished patch from Andre, and it will be added after we have that patch in. Note that right now we only do the time slicing for SCHED_RR tasks. The code would work for SCHED_OTHER tasks aswell, but their prio value is defered from the one the PPU thread has at time of spu_run, and using this for spu scheduling decisions would make the code very unfair. SCHED_OTHER support will be enabled once we the spu scheduler knows how to calculcate cpu_context.prio (very soon) Signed-off-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
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Christoph Hellwig authored
use DECLARE_BITMAP in the spu scheduler instead of reimplementing it. Signed-off-by:
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Christoph Hellwig authored
If we start a spu context with realtime priority we want it to run immediately and not wait until some other lower priority thread has finished. Try to find a suitable victim and use it's spu in this case. Signed-off-by:
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Christoph Hellwig authored
Give spu_yield a kerneldoc comment and remove the old comment documenting spu_activate, spu_deactive and spu_yield as all of them now have descriptive kerneldoc comments of their own. Signed-off-by:
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Christoph Hellwig authored
If we call spu_remove_from_active_list that spu is always guaranteed to be on the active list and in runnable state, so we can simply do a list_del to remove it and unconditionally take the was_active codepath. Signed-off-by:
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Christoph Hellwig authored
There is no need to directly wake up contexts in spu_activate when called from spu_run, so add a flag to surpress this wakeup. Signed-off-by:
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Christoph Hellwig authored
This is the biggest patch in this series, and it reworks the guts of the spu scheduler runqueue mechanism: - instead of embedding a waitqueue in the runqueue there is now a simple doubly-linked list, the actual wakeups happen by reusing the stop_wq in the spu context (maybe we should rename it one day) - spu_free and spu_prio_wakeup are merged into a single spu_reschedule function - various functionality is split out into small helpers, and kerneldoc comments are added in various places to document what's going on. - spu_activate is rewritten into a tight loop by removing test for various impossible conditions and using the infrastructure in this patch. Signed-off-by:
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Christoph Hellwig authored
It doesn't make any sense to have a priority field in the physical spu structure. Move it into the spu context instead. Signed-off-by:
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Christoph Hellwig authored
Various cleanups in code surrounding the state semaphore: - inline spu_acquire/spu_release - cleanup spu_acquire_* and add kerneldoc comments to these functions - remove spu_release_exclusive and replace it with spu_release Signed-off-by:
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Christoph Hellwig authored
The r/w semaphore to lock the spus was overkill and can be replaced with a mutex to make it faster, simpler and easier to debug. It also helps to allow making most spufs interruptible in future patches. Signed-off-by:
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Christoph Hellwig authored
Various cleanups to sched.c that don't change the global control flow: - add kerneldoc comments to various functions - add spu_ prefixes to various functions - add/remove context from the runqueue in bind/unbind_context as it's part of the logical operation - add a call to put_active_spu to spu_unbind_contex as it's logically part of the unbind operation Signed-off-by:
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Christoph Hellwig authored
Only bind_context/unbind_context change the spu context state. Thus we can move all assignents of SPU_STATE_RUNNABLE into bind_context, which parallels the unbind side aswell. Signed-off-by:
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Christoph Hellwig authored
unbind_context already sets the context state to SPU_STATE_SAVED, thus the spu_deactivate callers don't need to do it again. Signed-off-by:
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Christoph Hellwig authored
Remove the empty last line in arch/powerpc/platforms/cell/spufs/run.c. Signed-off-by:
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Christoph Hellwig authored
Remove the SPU_CONTEXT_PREEMPT define. It's unused and won't be used in this form after the scheduler rework. Signed-off-by:
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Benjamin Herrenschmidt authored
It looks like we've had some serious bitrot there mostly due to tracking of address_space's of mmap'ed files getting out of sync with the actual mmap code. The mfc, mss and psmap were not tracked properly and thus not invalidated on context switches (oops !) I also removed the various file->f_mapping = inode->i_mapping; assignments that were done in the other open() routines since that is already done for us by __dentry_open. One improvement we might want to do later is to assign the various ctx-> fields at mmap time instead of file open/close time so that we don't call unmap_mapping_range() on thing that have not been mmap'ed Finally, I added some smp_wmb's after assigning the ctx-> fields to make sure they are visible to other CPUs. I don't think this is really necessary as I suspect locking in the fs layer will make that happen anyway but better safe than sorry. Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
Paul Mackerras <paulus@samba.org>
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Benjamin Herrenschmidt authored
Struct page are no longer needed for SPUs, so let's not create them on PS3 anymore. Signed-off-by:
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Benjamin Herrenschmidt authored
This patch removes the need for struct page for SPE local store and registers from spufs. It also makes the locking much more obvious and no longer relying on the truncate logic black magic for protecting against races between unmap_mapping_range() and new pages faulted in. It does so by switching to a nopfn() handler and using the new vm_insert_pfn() to setup the PTEs itself while holding a lock on the SPE. The nice thing is that this patch actually removes a lot more code than it adds :-) Signed-off-by:
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Sylvain Munaut authored
The efika platform used three files efika-pci.c efika-setup.c and a 2 line efika.h to link the two. The total of code in those is really not much and therefore, I think they're better merged in a single file. There is absolutely _no_code_change_ at all, just merged the files. Signed-off-by:
Sylvain Munaut <tnt@246tNt.com> Acked-by:
Grant Likely <grant.likely@secretlab.ca> Signed-off-by:
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Sylvain Munaut authored
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Sylvain Munaut authored
Now that the device tree has the good properties, we can remove all the efika_init code by a single call to common code. While we're modifying that file, a few whitespaces/alignement/typo fixes are made (nothing significant). Signed-off-by:
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Sylvain Munaut authored
The 52xx was put before CHRP to allow EFIKA to be recognized properly. Now the efika tree is fixed up in prom_init so no need for this ugly hack. So we restore the 'normal' order. Signed-off-by:
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Sylvain Munaut authored
We make the efika device tree compliant with the defined bindings (at least compliant enough). This is mostly done by mangling the device_type and compatible properties, but also adding some missing bits. Signed-off-by:
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Grant Likely authored
Much needed refinement of mpc5200 device tree binding specifications. Short list: - drop mpc52xx designator; only two supported chips exist, 5200 and 5200b. It's premature to refer to them as '52xx'. - Specify optional 'model' and 'revision' properties in the soc5200 node - Specify reqiured 'cell-index' property to identify between multiple SOC devices of the same type. (Useful for arbitrating shared register access) - Specify optional 'port-number' property for adjusting the logical serial port assignments. - Specify optional 'has-wdt' property for gpt0 node. - Add system-frequency property to soc5200 node Signed-off-by:
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Grant Likely authored
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Stephen Rothwell authored
This rids us of a warning. Signed-off-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
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Stephen Rothwell authored
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Stefan Roese authored
This patch adds support for the AMCC Taishan PPC440GX evaluation board. This is still an arch/ppc port. I'm aware that the move of 4xx to arch/powerpc is making good progress right now. So this patch is mainly intended to make the Taishan support available for the community right now. Signed-off-by:
Stefan Roese <sr@denx.de> Signed-off-by:
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Benjamin Herrenschmidt authored
The recent vDSO consolidation patches broke powerpc due to a mistake in the definition of MAXPAGES constants. This fixes it by moving to a dynamically allocated array of pages instead as I don't like much hard coded size limits. Also move the vdso initialisation to an initcall since it doesn't really need to be done -that- early. Applogies for not catching the breakage earlier, Roland _did_ CC me on his patches a while ago, I got busy with other things and forgot to test them. Signed-off-by:
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Olaf Hering authored
/proc/pmu/info contains AC Power: 0 when booting without battery. Force AC Power, it will be updated whenever the battery state changes. Signed-off-by:
Olaf Hering <olaf@aepfle.de> Signed-off-by:
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Olaf Hering authored
libata calls pci_request_regions to claim PCI BAR 0 - 5 pci_request_regions fails if one of the regions cant be claimed. bar 5 has start == 0, __request_resource will fail. Tested on a p630 in SMP mode with pata_sl82c105 00:03.1 IDE interface: Symphony Labs SL82c105 (rev 05) (prog-if 8f [Master SecP SecO PriP PriO]) Control: I/O+ Mem- BusMaster- SpecCycle- MemWINV- VGASnoop- ParErr+ Stepping- SERR+ FastB2B- Status: Cap- 66MHz- UDF- FastB2B+ ParErr- DEVSEL=medium >TAbort- <TAbort- <MAbort- >SERR- <PERR- Interrupt: pin A routed to IRQ 86 Region 0: I/O ports at 3fd3000f000 [size=8] Region 1: I/O ports at 3fd3000f010 [size=4] Region 2: I/O ports at 3fd3000f020 [size=8] Region 3: I/O ports at 3fd3000f030 [size=4] Region 4: I/O ports at 3fd3000f040 [size=16] Region 5: I/O ports at 3fd30000000 [size=16] 00: ad 10 05 01 41 01 80 02 05 8f 01 01 08 48 80 00 10: 01 f0 00 00 11 f0 00 00 21 f0 00 00 31 f0 00 00 20: 41 f0 00 00 01 00 00 00 00 00 00 00 00 00 00 00 30: 00 00 00 00 00 00 00 00 00 00 00 00 56 01 02 28 40: b3 08 ff 00 09 09 00 00 09 09 00 00 09 09 00 00 50: 09 09 00 00 00 00 00 00 00 00 00 00 00 00 00 00 60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 70: 00 00 00 00 00 00 00 00 00 00 00 00 ff 00 00 00 80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 90: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 a0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 b0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 c0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 d0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 e0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 f0: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 name "ide" linux,phandle 00d5cdc0 (14011840) assigned-addresses 81001910 00000000 0000f000 00000000 00000008 81001914 00000000 0000f010 00000000 00000004 81001918 00000000 0000f020 00000000 00000008 8100191c 00000000 0000f030 00000000 00000004 81001920 00000000 0000f040 00000000 00000010 81001924 00000000 00000000 00000000 00000010 interrupts 00000003 built-in #size-cells 00000000 #address-cells 00000001 device_type "ide" reg 00001900 00000000 00000000 00000000 00000000 41001910 00000000 00000000 00000000 00000008 41001914 00000000 00000000 00000000 00000004 41001918 00000000 00000000 00000000 00000008 4100191c 00000000 00000000 00000000 00000004 41001920 00000000 00000000 00000000 00000010 41001924 00000000 00000000 00000000 00000010 compatible "pci10ad,105" "pciclass,01018f" ibm,fw-slot-number 00000000 fast-back-to-back devsel-speed 00000001 max-latency 00000028 (40) min-grant 00000002 class-code 0001018f (65935) revision-id 00000005 device-id 00000105 (261) vendor-id 000010ad (4269) ibm,loc-code "U0.1-P1/Q6" Signed-off-by: -
Olaf Hering authored
Move all the initialized variables to bss. Mark a version string as const. Signed-off-by:
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Pavel Fedin authored
During ppc64+ppc merge virtual DMA code for floppy driver was not ported. This patch restores virtual DMA support for floppy in new powerpc target. It is necessary at least on Pegasos and AmigaOne machines for the floppy drive to function. ISA DMA controller works incorrectly there due to its addressing limitations. Virtual DMA mode is activated by floppy=nodma option passed to the kernel (or module). There's no automatic switch like on i386. Signed-off-by:
Pavel Fedin <sonic_amiga@rambler.ru> Signed-off-by:
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Akira Iguchi authored
Disabling IRQ is required only in invalidation. This changes "spin_lock_irqsave" to "spin_lock" in other ops. Signed-off-by:
Kou Ishizaki <kou.ishizaki@toshiba.co.jp> Signed-off-by:
Akira Iguchi <akira2.iguchi@toshiba.co.jp> Acked-by:
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David Gibson authored
ARCH=powerpc should not use the ghastly un-multiplatformable tangle of includes that starts with asm-ppc/ibm4xx.h. This patch removes a compile-breaking include of it from head_44x.S. Signed-off-by:
David Gibson <dwg@au1.ibm.com> Signed-off-by:
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Paul Mackerras authored
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- 12 Feb, 2007 2 commits
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Linus Torvalds authored
* master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6: [SPARC]: Re-export saved_command_line to modules. [SPARC64]: Increase command line size to 2048 like other arches. [SPARC64]: We do not need ZONE_DMA.
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Linus Torvalds authored
* master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6: (25 commits) [XFRM]: Fix OOPSes in xfrm_audit_log(). [TCP]: cleanup of htcp (resend) [TCP]: Use read mostly for CUBIC parameters. [NETFILTER]: nf_conntrack_tcp: make sysctl variables static [NETFILTER]: ip6t_mh: drop piggyback payload packet on MH packets [NETFILTER]: Fix whitespace errors [NETFILTER]: Kconfig: improve dependency handling [NETFILTER]: xt_mac/xt_CLASSIFY: use IPv6 hook names for IPv6 registration [NETFILTER]: nf_conntrack: change nf_conntrack_l[34]proto_unregister to void [NETFILTER]: nf_conntrack: properly use RCU for nf_conntrack_destroyed callback [NETFILTER]: ip_conntrack: properly use RCU for ip_conntrack_destroyed callback [NETFILTER]: nf_conntrack: fix invalid conntrack statistics RCU assumption [NETFILTER]: ip_conntrack: fix invalid conntrack statistics RCU assumption [NETFILTER]: nf_conntrack: properly use RCU API for nf_ct_protos/nf_ct_l3protos arrays [NETFILTER]: ip_conntrack: properly use RCU API for ip_ct_protos array [NETFILTER]: nf_nat: properly use RCU API for nf_nat_protos array [NETFILTER]: ip_nat: properly use RCU API for ip_nat_protos array [NETFILTER]: nf_log: minor cleanups [NETFILTER]: nf_log: switch logger registration/unregistration to mutex [NETFILTER]: nf_log: make nf_log_unregister_pf return void ...
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