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2010-04-03sparc64: Update defconfig.David S. Miller1-12/+16
Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-03sparc64: Fix array size reported by vmemmap_populate()Ben Hutchings1-1/+1
vmemmap_populate() attempts to report the used index and total size of vmemmap_table, but it wrongly shifts the total size so that it is always shown as 0. Signed-off-by: Ben Hutchings <ben@decadent.org.uk> Signed-off-by: David S. Miller <davem@davemloft.net>
2010-04-02PCI quirk: RS780/RS880: disable MSI behind the PCI bridgeClemens Ladisch1-33/+3
The missing initialization of the nb_cntl.strap_msi_enable does not seem to be the only problem that prevents MSI, so that quirk is not sufficient to enable MSI on all machines. To be safe, disable MSI unconditionally for the internal graphics and HDMI audio on these chipsets. [rjw: Added the PCI_VENDOR_ID_AI quirk.] Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-04-02tty: release_one_tty() forgets to put pidsOleg Nesterov1-0/+2
release_one_tty(tty) can be called when tty still has a reference to pgrp/session. In this case we leak the pid. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Reported-by: Catalin Marinas <catalin.marinas@arm.com> Reported-and-tested-by: Tetsuo Handa <penguin-kernel@I-love.SAKURA.ne.jp> Acked-by: Linus Torvalds <torvalds@linux-foundation.org> Acked-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-04-02kgdb: Turn off tracing while in the debuggerJason Wessel1-0/+8
The kernel debugger should turn off kernel tracing any time the debugger is active and restore it on resume. Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Reviewed-by: Steven Rostedt <rostedt@goodmis.org>
2010-04-02kgdb: use atomic_inc and atomic_dec instead of atomic_setJason Wessel1-8/+7
Memory barriers should be used for the kgdb cpu synchronization. The atomic_set() does not imply a memory barrier. Reported-by: Will Deacon <will.deacon@arm.com> Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
2010-04-02kgdb: eliminate kgdb_wait(), all cpus enter the same wayJason Wessel1-83/+82
This is a kgdb architectural change to have all the cpus (master or slave) enter the same function. A cpu that hits an exception (wants to be the master cpu) will call kgdb_handle_exception() from the trap handler and then invoke a kgdb_roundup_cpu() to synchronize the other cpus and bring them into the kgdb_handle_exception() as well. A slave cpu will enter kgdb_handle_exception() from the kgdb_nmicallback() and set the exception state to note that the processor is a slave. Previously the salve cpu would have called kgdb_wait(). This change allows the debug core to change cpus without resuming the system in order to inspect arch specific cpu information. Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
2010-04-02kgdbts,sh: Add in breakpoint pc offset for superhJason Wessel1-0/+6
The kgdb test suite mimics the behavior of gdb. For the sh architecture the pc must be decremented by 2 for software breakpoint. Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Acked-by: Paul Mundt <lethal@linux-sh.org>
2010-04-02kgdb: have ebin2mem call probe_kernel_write onceJason Wessel1-14/+9
Rather than call probe_kernel_write() one byte at a time, process the whole buffer locally and pass the entire result in one go. This way, architectures that need to do special handling based on the length can do so, or we only end up calling memcpy() once. [sonic.zhang@analog.com: Reported original problem and preliminary patch] Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
2010-04-02sh: Fix up the SH-3 build for recent TLB changes.Paul Mundt4-28/+75
While the MMUCR.URB and ITLB/UTLB differentiation works fine for all SH-4 and later TLBs, these features are absent on SH-3. This splits out local_flush_tlb_all() in to SH-4 and PTEAEX copies while restoring the old SH-3 one, subsequently fixing up the build. This will probably want some further reordering and tidying in the future, but that's out of scope at present. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-04-02sh: export return_address() symbol.Paul Mundt1-0/+3
This is needed with some of the tracing code built as modules, so provide the export. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-04-01oom: fix the unsafe usage of badness() in proc_oom_score()Oleg Nesterov1-2/+3
proc_oom_score(task) has a reference to task_struct, but that is all. If this task was already released before we take tasklist_lock - we can't use task->group_leader, it points to nowhere - it is not safe to call badness() even if this task is ->group_leader, has_intersects_mems_allowed() assumes it is safe to iterate over ->thread_group list. - even worse, badness() can hit ->signal == NULL Add the pid_alive() check to ensure __unhash_process() was not called. Also, use "task" instead of task->group_leader. badness() should return the same result for any sub-thread. Currently this is not true, but this should be changed anyway. Signed-off-by: Oleg Nesterov <oleg@redhat.com> Cc: stable@kernel.org Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-04-01microblaze: Support word copying in copy_tofrom_userMichal Simek1-14/+25
Word copying is used only for aligned addresses. Here is space for improving to use any better copying technique. Look at memcpy implementation. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Print early printk information to log bufferMichal Simek1-9/+15
If early printk console is not enabled then all messages are written to log buffer. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: head.S typo fixMichal Simek1-2/+2
I forget to change register name in comments. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Use MICROBLAZE_TLB_SIZE in asm codeMichal Simek2-3/+3
TLB size was hardcoded in asm code. This patch brings ability to change TLB size only in one place. (mmu.h). Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Kconfig Fix - pciMichal Simek1-3/+0
I forget to remove pci Kconfig option. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Adding likely macrosMichal Simek6-26/+28
On the base on GCOV analytics is helpful to add likely/unlikely macros. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Add .type and .size to ASM functionsMichal Simek3-1/+22
Cachegrind analysis need this fix to be able to log asm functions. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Fix TLB macrosMichal Simek1-1/+2
To be able to do trace TLB operations. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Use instruction with delay slotMichal Simek1-8/+5
Sync labels. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Remove additional resr and rear loadingMichal Simek1-15/+3
RESR and REAR uses the same regs in whole file. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Change register usage for ESR and EARMichal Simek1-35/+35
This change synchronize register usage in code. ESR = R4 EAR = R3 Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Prepare work for optimization in exception codeMichal Simek1-6/+3
Any sync branch must follow mts instructions not mfs. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Add DEBUG optionMichal Simek1-0/+2
Disable debug option in asm code. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Support systems without lmb bramMichal Simek1-0/+6
When the system has no lmb bram, main memory should be start from zero because of microblaze vectors. DTS fragment could look like: DDR2_SDRAM: memory@0 { device_type = "memory"; reg = < 0x0 0x10000000 >; } ; Then you have to setup CONFIG_KERNEL_BASE_ADDR=0 which caused that kernel physical start address will be zero. On reset vector place will be jump to 0x100 and on 0x100 starts kernel text. You have to solve how to load the kernel before cpu starts. Tested with XMD. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: uaccess: Sync strlen, strnlen, copy_to/from_userMichal Simek1-56/+32
Last sync. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: uaccess: Unify __copy_tofrom_userMichal Simek2-39/+22
Move to generic location. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: uaccess: Move functions to generic locationMichal Simek3-200/+61
noMMU and MMU use them. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: uaccess: Fix put_user for noMMUMichal Simek1-22/+56
Here is small regression on dhrystone tests and I think that on all benchmarking tests. It is due to better checking mechanism in put_user macro Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: uaccess: Fix get_user macro for noMMUMichal Simek1-23/+66
Use unified version. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: uaccess: fix clear_user for noMMU kernelMichal Simek1-45/+36
Previous patches fixed only MMU version and this is the first patch for noMMU kernel Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: uaccess: Fix strncpy_from_user functionMichal Simek1-3/+11
Generic implementation for noMMU and MMU version Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: uaccess: fix copy_from_user macroMichal Simek1-9/+14
copy_from_user macro also use copy_tofrom_user function Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: uaccess: copy_to_user unificationMichal Simek1-9/+16
noMMU and MMU kernel will use copy copy_tofrom_user asm implementation. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: uaccess: sync put/get/clear_user macrosMichal Simek1-37/+69
Add macro description and resort. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: uaccess: fix put_user and get_user macrosMichal Simek1-51/+49
Use FIXUP macros and resort them. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: uaccess: fix __get_user_asm macroMichal Simek1-16/+17
It is used __FIXUP_SECTION and __EX_TABLE_SECTION macros. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: uaccess: fix clean user macroMichal Simek1-34/+55
This is the first patch which does uaccess unification. I choosed to do several patches to be able to use bisect in future if any fault happens. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: move noMMU __range_ok function to uaccess.hMichal Simek2-9/+6
The same noMMU and MMU functions should be placed in one file. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Move exception_table_entry upwardMichal Simek1-16/+15
Just sort to be able remove whole block. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Remove segment.hMichal Simek5-52/+34
I would like to use asm-generic uaccess.h where are segment macros defined. This is just first step. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Remove memset in free_init_pagesMichal Simek1-1/+0
We don't need to do it. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Makefile cleanupsArun Bhanu1-4/+0
If CONFIG_INITRAMFS_SOURCE is set, "scripts/gen_initramfs_list.sh" checks if the cpio image exists. Remove the duplicate check from the Makefile. Remove the "clean-kernel" variable which is unused in the Makefile and is not used by the Kbuild. Signed-off-by: Arun Bhanu <arun@bhanu.net> Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Fix Makefile to delete build generated filesArun Bhanu2-1/+3
'make clean' does not to delete the following build generated file: arch/microblaze/boot/linux.bin.ub 'make mrproper' does not to delete the following build generated files: arch/microblaze/boot/simpleImage.* Fix the Makefile to delete these build generated files. See [1] for a discussion on why simpleImage.* files are deleted with 'make mrproper' and not with 'make clean'. [1] http://lkml.org/lkml/2010/3/12/96 Signed-off-by: Arun Bhanu <arun@bhanu.net> Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Add a missing single quote to make 'make help' happyArun Bhanu1-1/+1
'make ARCH=microblaze help' fails with the following error due to a missing single quote. /bin/sh: -c: line 0: unexpected EOF while looking for matching `'' /bin/sh: -c: line 1: syntax error: unexpected end of file make: *** [help] Error 2 Signed-off-by: Arun Bhanu <arun@bhanu.net> Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01microblaze: Fix "kstack=" parsingSteven J. Magnani1-4/+2
The "kstack=" command line parameter is not parsed correctly. All proper values are interpreted as zero. Signed-off-by: Steven J. Magnani <steve@digidescorp.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-04-01drm/radeon/kms: enable ACPI powermanagement mode on radeon gpus.Dave Airlie2-0/+8
Some GPUs have an APM/ACPI PM mode selection switch and some BIOSes set this to APM. We really want this in ACPI mode for Linux. Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-04-01drm/radeon/kms: rs400/480 should set common registers.Dave Airlie1-0/+2
These GPUs should be setting these registers up also. Signed-off-by: Dave Airlie <airlied@redhat.com>
2010-04-01drm/radeon/kms: add sanity check to wptr.Dave Airlie1-0/+2
If we resume in a bad way, we'll get 0xffffffff in wptr, and then oops with no console. This just adds a sanity check so that we can avoid the oops and hopefully get more details out of people's systems. Signed-off-by: Dave Airlie <airlied@redhat.com>
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