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2008-10-20container freezer: add TIF_FREEZE flag to all architecturesMatt Helsley
This patch series introduces a cgroup subsystem that utilizes the swsusp freezer to freeze a group of tasks. It's immediately useful for batch job management scripts. It should also be useful in the future for implementing container checkpoint/restart. The freezer subsystem in the container filesystem defines a cgroup file named freezer.state. Reading freezer.state will return the current state of the cgroup. Writing "FROZEN" to the state file will freeze all tasks in the cgroup. Subsequently writing "RUNNING" will unfreeze the tasks in the cgroup. * Examples of usage : # mkdir /containers/freezer # mount -t cgroup -ofreezer freezer /containers # mkdir /containers/0 # echo $some_pid > /containers/0/tasks to get status of the freezer subsystem : # cat /containers/0/freezer.state RUNNING to freeze all tasks in the container : # echo FROZEN > /containers/0/freezer.state # cat /containers/0/freezer.state FREEZING # cat /containers/0/freezer.state FROZEN to unfreeze all tasks in the container : # echo RUNNING > /containers/0/freezer.state # cat /containers/0/freezer.state RUNNING This patch: The first step in making the refrigerator() available to all architectures, even for those without power management. The purpose of such a change is to be able to use the refrigerator() in a new control group subsystem which will implement a control group freezer. [akpm@linux-foundation.org: fix sparc] Signed-off-by: Cedric Le Goater <clg@fr.ibm.com> Signed-off-by: Matt Helsley <matthltc@us.ibm.com> Acked-by: Pavel Machek <pavel@suse.cz> Acked-by: Serge E. Hallyn <serue@us.ibm.com> Acked-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Nigel Cunningham <nigel@tuxonice.net> Tested-by: Matt Helsley <matthltc@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-16[PATCH] remove unused ibcs2/PER_SVR4 in SET_PERSONALITYMartin Schwidefsky
The SET_PERSONALITY macro is always called with a second argument of 0. Remove the ibcs argument and the various tests to set the PER_SVR4 personality. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2008-10-13Merge git://git.infradead.org/users/dwmw2/random-2.6Linus Torvalds
* git://git.infradead.org/users/dwmw2/random-2.6: Fix autoloading of MacBook Pro backlight driver. Automatic MODULE_ALIAS() for DMI match tables. Remove asm/a.out.h files for all architectures without a.out support. Introduce HAVE_AOUT symbol to remove hard-coded arch list for BINFMT_AOUT Remove redundant CONFIG_ARCH_SUPPORTS_AOUT S390: Update comments about why we don't use <asm-generic/statfs.h> SPARC: Use <asm-generic/statfs.h> PowerPC: Use <asm-generic/statfs.h> PARISC: Use <asm-generic/statfs.h> x86_64: Use <asm-generic/statfs.h> IA64: Use <asm-generic/statfs.h> ARM: Use <asm-generic/statfs.h> Make <asm-generic/statfs.h> suitable for 64-bit platforms. Define and use PCI_DEVICE_ID_MARVELL_88ALP01_CCIC for CAFÉ camera driver [MTD] [NAND] Define and use PCI_DEVICE_ID_MARVELL_88ALP01_NAND for CAFÉ Use PCI_DEVICE_ID_88ALP01 for CAFÉ chip, rather than PCI_DEVICE_ID_CAFE. EFS: Don't set f_fsid in statfs().
2008-10-13serial: allow 8250 to be used on sparcDavid Miller
This requires three changes: 1) Remove !SPARC restriction in Kconfig. 2) Move Sparc specific serial drivers before 8250, so that serial console devices don't change names on us, even if 8250 finds devices. 3) Since the Sparc specific serial drivers try to use the same major/minor device namespace as 8250, some coordination is necessary. Use the sunserial_*() layer routines to allocate minor number space within TTY_MAJOR when CONFIG_SPARC. This has no effect on other platforms. Thanks to Josip Rodin for bringing up this issue and testing plus debugging various revisions of this patch. Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Alan Cox <alan@redhat.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2008-10-13Merge branch 'master' of ↵David Woodhouse
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: include/asm-x86/statfs.h
2008-09-19sparc32: Delete master_l10_limit.David S. Miller
It is only set, never used. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-19sparc32: Use PROM device probing for sun4c timers.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-19sparc32: Use PROM infrastructure for probing and mapping sun4d timers.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-13sparc32: Use PROM device probing for sun4m timer registers.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-12sparc64: Fix sparse warnings in fault.cDavid S. Miller
1) set_brkpt() is referenced by nothing and hasn't been used by anyone to my knowledge for many many years. So just delete it. 2) add extern decl for do_sparc64_fault() in asm/pgtable_64.h Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-11sparc64: Fix sparse warnings in visemul.cDavid S. Miller
1) edge8 tables should be static 2) add vis_emul() extern decl. to asm/visasm.h Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-11sparc64: Define WANT_PAGE_VIRTUALDavid S. Miller
As sparse warns, without this struct page pointer subtraction is extremely expensive, and this is a pretty common operation in fast paths. With this define struct page becomes 64 bytes which makes for a simple subtract and shift, instead of a costly divide or reciprocol multiply. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-11sysctl: Use header file for sysctl knob declarations on sparc.David S. Miller
This also takes care of a sparse warning as scons_pwroff's definition point. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-11sparc64: Fix sparse warnings in global reg snapshotting.David S. Miller
Lots of shadowed local variables and global_reg_snapshot[] needs an extern declaration in asm/ptrace_64.h. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-10sparc64: Get rid of pci_controller_info.David S. Miller
It is just used as a parent to encapsulate two PBM objects. But that layout is only really relevant and necessary for psycho PCI controllers, which unlike all the others share a single IOMMU instance between sibling PCI busses. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-09sparc: remove unused includesBjoern B. Brandenburg
The spinlock code does not use NR_CPUS. Compile tested using allyesconfig and allnoconfig. Signed-off-by: Bjoern B. Brandenburg <bbb@cs.unc.edu> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-08sparc32: Move sun4d show_leds() out of asm/obio.hDavid S. Miller
Put it, as well as cpu_leds[] array, into sun4d_irq.c Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-08Merge branch 'master' of ↵David S. Miller
master.kernel.org:/pub/scm/linux/kernel/git/davem/sparc-2.6 Conflicts: arch/sparc/kernel/of_device.c
2008-09-06SPARC: Use <asm-generic/statfs.h>David Woodhouse
Signed-off-by: David Woodhouse <David.Woodhouse@intel.com>
2008-09-03sparc: Remove asm/rtc.hDavid S. Miller
No more users. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-03sparc32: Kill asm/mostek.h.David S. Miller
No longer used. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-02sparc64: Implement SSTATE purely using notifiers and initcalls.David S. Miller
Don't clutter up the tree with sstate_blah() scattered all over the place. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-09-02sparc64: Move reboot handling into seperate file and kill power reg programming.David S. Miller
We should always use prom_power_off(). Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-31sparc64: Clean up CPU chip type probing code.David S. Miller
Three main things: 1) Make prober an arch initcall instead of using hard-coded invocation from paging_init() 2) Shrink table size, the fpu ident stuff was never used. 3) Use named struct initialized in table. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-31sparc: remove CONFIG_SUN4Adrian Bunk
While doing some easy cleanups on the sparc code I noticed that the CONFIG_SUN4 code seems to be worse than the rest - there were some "I don't know how it should work, but the current code definitely cannot work." places. And while I have seen people running Linux on machines like a SPARCstation 5 a few years ago I don't recall having seen sun4 machines, even less ones running Linux. Signed-off-by: Adrian Bunk <bunk@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-31sparc64: Rewrite central driver.David S. Miller
This driver is now limited to just doing the basic clock board and FHC chip initialization and registering the platform devices for the per-board LEDs, which are driven by the new LEDS_STARFIRE driver. The IRQ register handling is already confined purely to the device tree code. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-31sparc64: Delete starfire_cpu_setup().David S. Miller
It does nothing. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-31sparc: Annotate of_device_id arrays with const or __initdata.David S. Miller
As suggested by Stephen Rothwell. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-30sparc: Kill ebus_bus_type.David S. Miller
No longer used. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-30sparc: Kill EBUS driver layer.David S. Miller
All that remains is the EBUS DMA programming library for sparc64. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29sparc64: Convert EBUS floppy support to pure OF driver.David S. Miller
Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29sparc: Move EBUS DMA interfaces into seperate header file.David S. Miller
These have no dependencies on the EBUS probing layer, the clients setup the registers and all of those details. The EBUS DMA layer just programs and manages the DMA controller found in EBUS. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29sparc64: Use generic CMOS driver.David S. Miller
Based largely upon a patch by Krzysztof Helt <krzysztof.h1@poczta.fm> Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29sparc: asm/mostek.h is now 32-bit onlyDavid S. Miller
No need for the 64-bit header version any more. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29sparc: Delete asm/sbus*.hDavid S. Miller
No longer used. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29sparc: Kill now spurious includes of sbus.hDavid S. Miller
In order to make this week I also had to add an include of linux/dma-mapping.h to asm/pci_32.h because drivers/pci/pci.c really depends upon getting this header somehow. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29sparc32: Kill iounit_map_dma_*().David S. Miller
Unused. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29sparc: Kill sbus_bus_type.David S. Miller
No longer used. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29sparc: Remove generic SBUS probing layer.David S. Miller
The individual SBUS IOMMU arch code now sets the IOMMU information directly into the OF device objects. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29sparc: Add OF archdata propagation helper.David S. Miller
Add a helper function that, given a bus of_device node, propagates all iommu, stc, and host_controller values down to the child nodes. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29sparc32: Kill sbus_is_slave().David S. Miller
Unused. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29sparc: Kill OBP property members of sbus_dev and sbus_busDavid S. Miller
Unused. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29sparc: Kill sbus_devaddr() and sbus_dev_slot().David S. Miller
Unused. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29sparc: Kill sbus_ioremap() and sbus_iounmap().David S. Miller
No more users. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29sparc: Convert remaining sbus_ioremap() and sbus_iounmap() users.David S. Miller
Use of_ioremap() and of_iounmap() instead. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29sparc: Remove dinky old-style SBUS probing facilities.David S. Miller
No drivers or code uses this stuff any more, every driver has been converted over to OF device probing. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29sparc: Remove SBUS layer resource and irq handling.David S. Miller
All the drivers use OF device objects now for this information. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29sparc: Kill SBUS layer IRQ hooks.David S. Miller
IRQs are obtained by drivers from the of_device struct. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29sparc32: Make mmu_map_dma_area and mmu_unmap_dma_area take a device pointer.David S. Miller
This lets us kill this "map it in every IOMMU" crazy code, and also some of the final references to sbus_root. Signed-off-by: David S. Miller <davem@davemloft.net>
2008-08-29sparc32: Kill mmu_translate_dvma and implementations.David S. Miller
No longer used. Signed-off-by: David S. Miller <davem@davemloft.net>
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