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| * | | Blackfin: fix DMA/cache bug when resuming from suspend to RAMMichael Hennerich2010-08-061-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The dma_memcpy() function takes care of flushing different caches for us. Normally this is what we want, but when resuming from mem, we don't yet have caches enabled. If these functions happen to be placed into L1 mem (which is what we're trying to relocate), then things aren't going to work. So define a non-cache dma_memcpy() variant to utilize in situations like this. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * | | Blackfin: fix typo in hweight asmMike Frysinger2010-08-061-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Run ONES on the incoming value rather than random garbage. This fixes random crashes with some networking code. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * | | Blackfin: stub fpregs dumpingMike Frysinger2010-08-061-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | The Blackfin processor has no FPU, so there are no FPU regs to dump. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * | | Blackfin: new dynamic bfin read/write mmr helpersMike Frysinger2010-08-061-0/+17
| | |/ | |/| | | | | | | | | | | | | | | | These are useful when working with C structs of MMRs as the appropriate size is selected based on the given argument. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* | | arch: Implement local64_tPeter Zijlstra2010-06-091-0/+1
|/ / | | | | | | | | | | | | | | | | | | | | | | | | | | | | On 64bit, local_t is of size long, and thus we make local64_t an alias. On 32bit, we fall back to atomic64_t. (architecture can provide optimized 32-bit version) (This new facility is to be used by perf events optimizations.) Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: linux-arch@vger.kernel.org Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> LKML-Reference: <new-submission> Signed-off-by: Ingo Molnar <mingo@elte.hu>
* | blackfin: use use asm-generic/scatterlist.hFUJITA Tomonori2010-05-271-21/+1
| | | | | | | | | | | | | | Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Mike Frysinger <vapier@gentoo.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Blackfin: set ARCH_KMALLOC_MINALIGNFUJITA Tomonori2010-05-221-0/+2
| | | | | | | | | | | | | | | | | | | | Architectures that handle DMA-non-coherent memory need to set ARCH_KMALLOC_MINALIGN to make sure that kmalloc'ed buffer is DMA-safe: the buffer doesn't share a cache with the others. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Acked-by: Pekka Enberg <penberg@cs.helsinki.fi> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* | Blackfin: move string functions to normal lib/ assemblyRobin Getz2010-05-221-109/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Since 'extern inline' doesn't work correctly in the context of the Linux kernel (too many overriding defines), move the string functions to normal lib/ assembly files (like the existing mem funcs). This avoids the forced inline all over the kernel and allows us to place them constantly in L1. This also avoids some module failures when gcc inserts calls to string functions but the kernel build system doesn't fully consult the library archives. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* | Blackfin: add support for the DBG (debug output) pseudo insnRobin Getz2010-05-221-0/+1
| | | | | | | | | | | | | | | | Another pseudo insn used by Blackfin simulators. Also factor some now common register lookup code out of the DBGA handlers. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* | Blackfin: change the BUG opcode to an unused 16-bit opcodeRobin Getz2010-05-221-1/+6
| | | | | | | | | | | | | | | | | | The current BUG opcode includes the bit that flags the insn as a 32bit opcode, but it wasn't declaring it as 32bits. So pick an unused 16bit. URL: http://blackfin.uclinux.org/gf/tracker/5973 Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* | Blackfin: add support for the DBGA (debug assert) pseudo insnRobin Getz2010-05-221-0/+17
| | | | | | | | | | | | | | | | | | | | | | A few pseudo debug insns exist to make testing of simulators easier. Since these don't actually exist in the hardware, we have to have the exception handler take care of emulating these. This allows sim test cases to be executed unmodified under Linux and thus simplify debugging greatly. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* | Blackfin: SMP: add flush_tlb_kernel_range stubGraf Yang2010-05-211-0/+1
| | | | | | | | | | | | | | Newer code in mm/page_alloc.c requires this function now in arches. Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* | Blackfin: make hardware trace output a little more usefulRobin Getz2010-05-211-3/+3
| | | | | | | | | | | | | | | | Decode the vast majority of insns that appear in the trace buffer to get a better idea of what's going on at a glance. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* | Blackfin: remove CONFIG_DEBUG_VERBOSE from trace.cRobin Getz2010-05-212-0/+11
| | | | | | | | | | | | | | | | | | | | Now that the split traps code has moved all the verbose output to the trace.c file, we can unify all the CONFIG_DEBUG_VERBOSE handling. This gets rid of much of the crappy ifdef forest and enables usage of normal pr_xxx functions so checkpatch stops complaining. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* | Blackfin: split kernel/traps.cRobin Getz2010-05-211-0/+2
| | | | | | | | | | | | | | | | | | | | The current kernel/traps.c file has grown a bit unwieldy as more debugging functionality has been added over time, so split it up into more logical files. There should be no functional changes here, just minor whitespace tweaking. This should make future extensions easier to manage. Signed-off-by: Robin Getz <robin.getz@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* | Blackfin: punt Blackfin-specific GPIO wakeup APIMichael Hennerich2010-05-211-11/+11
| | | | | | | | | | | | | | | | | | | | | | This patch removes a custom GPIO wakeup API which allowed GPIOs to act as wakeup sources, which are not configured as Interrupts. This API is a leftover from the time before irq_wake was established. From now on people must use enable_irq_wake(GPIO_IRQx) and the GPIO in question needs to be configured as Interrupt. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* | Blackfin: drop unused bad_page pages and move zero_page to the bssMike Frysinger2010-05-211-1/+2
|/ | | | | | | | The empty_bad_page/empty_bad_page_table pages are unused, so punt them. The zero_page is always allocated, so push it out to the bss to speed up the booting process a bit and pack data nicer. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* add descriptive comment for TIF_MEMDIE task flag declaration.Andreas Dilger2010-05-141-1/+1
| | | | | | Signed-off-by: Andreas Dilger <adilger@dilger.ca> Acked-by: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* include cleanup: Update gfp.h and slab.h includes to prepare for breaking ↵Tejun Heo2010-03-301-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | implicit slab.h inclusion from percpu.h percpu.h is included by sched.h and module.h and thus ends up being included when building most .c files. percpu.h includes slab.h which in turn includes gfp.h making everything defined by the two files universally available and complicating inclusion dependencies. percpu.h -> slab.h dependency is about to be removed. Prepare for this change by updating users of gfp and slab facilities include those headers directly instead of assuming availability. As this conversion needs to touch large number of source files, the following script is used as the basis of conversion. http://userweb.kernel.org/~tj/misc/slabh-sweep.py The script does the followings. * Scan files for gfp and slab usages and update includes such that only the necessary includes are there. ie. if only gfp is used, gfp.h, if slab is used, slab.h. * When the script inserts a new include, it looks at the include blocks and try to put the new include such that its order conforms to its surrounding. It's put in the include block which contains core kernel includes, in the same order that the rest are ordered - alphabetical, Christmas tree, rev-Xmas-tree or at the end if there doesn't seem to be any matching order. * If the script can't find a place to put a new include (mostly because the file doesn't have fitting include block), it prints out an error message indicating which .h file needs to be added to the file. The conversion was done in the following steps. 1. The initial automatic conversion of all .c files updated slightly over 4000 files, deleting around 700 includes and adding ~480 gfp.h and ~3000 slab.h inclusions. The script emitted errors for ~400 files. 2. Each error was manually checked. Some didn't need the inclusion, some needed manual addition while adding it to implementation .h or embedding .c file was more appropriate for others. This step added inclusions to around 150 files. 3. The script was run again and the output was compared to the edits from #2 to make sure no file was left behind. 4. Several build tests were done and a couple of problems were fixed. e.g. lib/decompress_*.c used malloc/free() wrappers around slab APIs requiring slab.h to be added manually. 5. The script was run on all .h files but without automatically editing them as sprinkling gfp.h and slab.h inclusions around .h files could easily lead to inclusion dependency hell. Most gfp.h inclusion directives were ignored as stuff from gfp.h was usually wildly available and often used in preprocessor macros. Each slab.h inclusion directive was examined and added manually as necessary. 6. percpu.h was updated not to include slab.h. 7. Build test were done on the following configurations and failures were fixed. CONFIG_GCOV_KERNEL was turned off for all tests (as my distributed build env didn't work with gcov compiles) and a few more options had to be turned off depending on archs to make things build (like ipr on powerpc/64 which failed due to missing writeq). * x86 and x86_64 UP and SMP allmodconfig and a custom test config. * powerpc and powerpc64 SMP allmodconfig * sparc and sparc64 SMP allmodconfig * ia64 SMP allmodconfig * s390 SMP allmodconfig * alpha SMP allmodconfig * um on x86_64 SMP allmodconfig 8. percpu.h modifications were reverted so that it could be applied as a separate patch and serve as bisection point. Given the fact that I had only a couple of failures from tests on step 6, I'm fairly confident about the coverage of this conversion patch. If there is a breakage, it's likely to be something in one of the arch headers which should be easily discoverable easily on most builds of the specific arch. Signed-off-by: Tejun Heo <tj@kernel.org> Guess-its-ok-by: Christoph Lameter <cl@linux-foundation.org> Cc: Ingo Molnar <mingo@redhat.com> Cc: Lee Schermerhorn <Lee.Schermerhorn@hp.com>
* Merge branch 'for-linus' of ↵Linus Torvalds2010-03-1825-196/+1284
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/vapier/blackfin: (96 commits) Blackfin: stop cleaning include/asm/asm-offsets.h Blackfin: scale calibration when cpu freq changes Blackfin: eat spurious space in asm/dpmc.h Blackfin: fix anomaly 283 handling with exact hardware error Blackfin: bf537-stamp: add example ADXL346 orientation resources Blackfin: bf537-stamp: add example AD2S1210 IIO resources Blackfin: don't support keypad wakeup from hibernate Blackfin: bf537-stamp: add example AD7416 IIO resources Blackfin: bf537-stamp: add example ADP8860 backlight/led resources Blackfin: bf537-stamp: add example AD7414 temp sensor resources Blackfin: rename AD1836 to AD183X in board files Blackfin: bf537-stamp: add example AD2S120x resources Blackfin: add support for the on-chip MAC status interrupts Blackfin: asm/page.h: pull in asm-generic headers Blackfin: mark gpio lib functions static Blackfin: bf537-stamp: add example ADAU1361 resources Blackfin: GPIO: implement to_irq handler Blackfin: bf537-stamp: add example ADP122/ADP150 power regulator resources Blackfin: bf537-stamp: add example AD2S90 resources Blackfin: bf537-stamp: add example AD5398 power regulator resources ...
| * Blackfin: eat spurious space in asm/dpmc.hMike Frysinger2010-03-091-2/+2
| | | | | | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: asm/page.h: pull in asm-generic headersMike Frysinger2010-03-091-0/+3
| | | | | | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: GPIO: implement to_irq handlerJoachim Eastwood2010-03-091-4/+13
| | | | | | | | | | | | | | | | This makes it possible to support IRQs coming from off-chip GPIO controllers. Signed-off-by: Joachim Eastwood <joachim.eastwood@jotron.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: fix single stepping over system callsMike Frysinger2010-03-091-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | On Blackfin systems, the hardware single step exception triggers before the system call exception, so we need to save this info to process it later on. Otherwise, single stepping in userspace misses a few insns right after the system call. This is based a bit on the SuperH code added in commit 4b505db9c4c72dbd. Reported-by: Roland McGrath <roland@redhat.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: initial tracehook supportMike Frysinger2010-03-092-0/+119
| | | | | | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: initial regset supportMike Frysinger2010-03-091-1/+7
| | | | | | | | | | | | We don't support core dumps (yet?), but this should make things easier. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: simplify PTRACE_{PEEK,POKE}USR in preperation for regset supportMike Frysinger2010-03-091-0/+2
| | | | | | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: rewrite resync_core_{i,d}cache() SMP logic to avoid per_cpu dataGraf Yang2010-03-092-2/+7
| | | | | | | | | | | | | | | | | | | | | | This functions are implicitly called by core functions like cpu_relax(), and since those functions may be called early on before common code has initialized the per-cpu data area, we need to tweak the stats gathering. Now the statistics are maintained in common bss which makes these funcs safe to use as soon as the C runtime env is setup. Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: add support for cpufreq on SMP systemsGraf Yang2010-03-091-3/+4
| | | | | | | | | | Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: add CALLER_ADDR ftrace macrosYi Li2010-03-091-0/+53
| | | | | | | | | | | | | | | | Since GCC doesn't support __builtin_frame_address(n) where n!=0, add our own function to walk the stack frame pointers. Signed-off-by: Yi Li <yi.li@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: split watchdog definitions into a dedicated header fileGraf Yang2010-03-091-0/+30
| | | | | | | | | | | | | | This allows things to be shared between the different watchdog sources. Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: add dma_disable_irq_nosync() API for irq handlersBarry Song2010-03-091-0/+4
| | | | | | | | | | | | | | Some IRQ handlers need to disable a DMA channel without waiting. Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: fix whitespace damage in thread_info.hMike Frysinger2010-03-091-12/+11
| | | | | | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: implement ndelay()Barry Song2010-03-091-2/+14
| | | | | | | | | | Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: implement nmi_watchdog for SMP on BF561Graf Yang2010-03-093-0/+17
| | | | | | | | | | Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: increase NR_IRQS beyond NR on-chip IRQsMichael Hennerich2010-03-091-0/+3
| | | | | | | | | | | | | | This makes room for off-chip IRQ controllers. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: add support for irqflags tracingYi Li2010-03-091-0/+12
| | | | | | | | | | Signed-off-by: Yi Li <yi.li@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: initial XIP supportBarry Song2010-03-092-0/+13
| | | | | | | | | | Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: SMP: add PM/CPU hotplug supportGraf Yang2010-03-091-0/+7
| | | | | | | | | | Signed-off-by: Graf Yang <graf.yang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: SMP: make core timers per-cpu clock events for HRTYi Li2010-03-091-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | SMP systems require per-cpu local clock event devices in order to enable HRT support. One a BF561, we can use local core timer for this purpose. Originally, there was one global core-timer clock event device set up for core A. To accomplish this feat, we need to split the gptimer0/core timer logic so that each is a standalone clock event. There is no requirement that we only have one clock event source anyways. Once we have this, we just define per-cpu clock event devices for each local core timer. Signed-off-by: Yi Li <yi.li@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: unify MMR helpersMike Frysinger2010-03-091-44/+12
| | | | | | | | Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: add optimized version of Hamming Weight functionsMichael Hennerich2010-03-091-19/+55
| | | | | | | | | | Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: dma-mapping: fix thinko in constant optimizationSonic Zhang2010-03-091-6/+9
| | | | | | | | | | | | | | | | Make sure the non-constant version of the dma_sync functions actually complete instead of recursively calling itself forever. Signed-off-by: Sonic Zhang <sonic.zhang@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: merge common CAN defines into one headersMike Frysinger2010-03-091-0/+725
| | | | | | | | | | | | | | Rather than copy and paste the MMR defines and register layout, consolidate everything in one place. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: extend bfin-lq035q1-fb resources to include PPI modeMichael Hennerich2010-03-091-0/+12
| | | | | | | | | | | | | | | | This lets us support the new BF527-EZKIT V2.1 via platform resources tweaks only. Signed-off-by: Michael Hennerich <michael.hennerich@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: fix MPU page permission masks overflow when dealing with async memoryBarry Song2010-03-091-3/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | Attempting to use the MPU while doing XIP out of parallel flash hooked up to the async memory bus would often result in random crashes as the MPU slowly corrupted memory. The fallout here is that the async banks gain MPU protection from user space too. So any accesses have to go through the mmap() interface rather than just using hardcoded pointers. Signed-off-by: Barry Song <barry.song@analog.com> Signed-off-by: Mike Frysinger <vapier@gentoo.org>
| * Blackfin: bfin_sport: unify & standardize SPORT masksMike Frysinger2010-03-092-97/+132
| | | | | | | | | | | | | | Rather than have every SPORT driver copy & paste things, declare the C structure and MMR bitmasks in one place for everyone to use. Signed-off-by: Mike Frysinger <vapier@gentoo.org>
* | Merge branch 'for-linus' of ↵Linus Torvalds2010-03-121-2/+2
|\ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial * 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jikos/trivial: (56 commits) doc: fix typo in comment explaining rb_tree usage Remove fs/ntfs/ChangeLog doc: fix console doc typo doc: cpuset: Update the cpuset flag file Fix of spelling in arch/sparc/kernel/leon_kernel.c no longer needed Remove drivers/parport/ChangeLog Remove drivers/char/ChangeLog doc: typo - Table 1-2 should refer to "status", not "statm" tree-wide: fix typos "ass?o[sc]iac?te" -> "associate" in comments No need to patch AMD-provided drivers/gpu/drm/radeon/atombios.h devres/irq: Fix devm_irq_match comment Remove reference to kthread_create_on_cpu tree-wide: Assorted spelling fixes tree-wide: fix 'lenght' typo in comments and code drm/kms: fix spelling in error message doc: capitalization and other minor fixes in pnp doc devres: typo fix s/dev/devm/ Remove redundant trailing semicolons from macros fix typo "definetly" -> "definitely" in comment tree-wide: s/widht/width/g typo in comments ... Fix trivial conflict in Documentation/laptops/00-INDEX
| * | Fix spelling of 'platform' in comments and docStefan Weil2010-02-051-2/+2
| |/ | | | | | | | | | | | | | | | | Replace platfrom -> platform. This is a frequent spelling bug. Signed-off-by: Stefan Weil <weil@mail.berlios.de> Signed-off-by: Jiri Kosina <jkosina@suse.cz>
* | dma-mapping: blackfin: remove the obsolete and unnecessary DMA API commentsFUJITA Tomonori2010-03-121-36/+0
|/ | | | | | | | | | | | | | | | | pci_dma_sync_single was obsoleted long ago. All the comments are generic, not architecture specific, simply describes some of the DMA-API (and the same comments are in other files). Documentation/DMA-API.txt have more detailed descriptions. This removes the above obsolete and unnecessary DMA API comments. Let's describe the DMA API in only Documentation/DMA-API.txt. Signed-off-by: FUJITA Tomonori <fujita.tomonori@lab.ntt.co.jp> Cc: Mike Frysinger <vapier@gentoo.org> Cc: Jesse Barnes <jbarnes@virtuousgeek.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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