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* Merge branch 'sh/cachetlb' into sh-fixes-for-linusPaul Mundt2010-12-01
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| * sh: Assume new page cache pages have dirty dcache lines.Paul Mundt2010-12-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This follows the ARM change c01778001a4f5ad9c62d882776235f3f31922fdd ("ARM: 6379/1: Assume new page cache pages have dirty D-cache") for the same rationale: There are places in Linux where writes to newly allocated page cache pages happen without a subsequent call to flush_dcache_page() (several PIO drivers including USB HCD). This patch changes the meaning of PG_arch_1 to be PG_dcache_clean and always flush the D-cache for a newly mapped page in update_mmu_cache(). This addresses issues seen with executing binaries from MMC, in addition to some of the other HCDs that don't explicitly do cache management for their pipe-in buffers. Requested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* | sh: Add div6_reparent_clks to clock framework for FSIKuninori Morimoto2010-11-28
|/ | | | | | | | | | | | Current clk_ops doesn't support .init which is used to select external clock on ecovec without CONFIG_SH_CLK_CPG_LEGACY. To solve this problem, this patch add div6_reparent_clks to clock-sh7724. This patch solve compile error too. Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* sh: Use GCC __builtin_prefetch() to implement prefetch().Giuseppe CAVALLARO2010-11-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | GCC's __builtin_prefetch() was introduced a long time ago, all supported GCC versions have it. So this patch is to use it for implementing the prefetch on SH2A and SH4. The current prefetch implementation is almost equivalent with __builtin_prefetch. The third parameter in the __builtin_prefetch is the locality that it's not supported on SH architectures. It has been set to three and it should be verified if it's suitable for SH2A as well. I didn't test on this architecture. The builtin usage should be more efficient that an __asm__ because less barriers, and because the compiler doesn't see the inst as a "black box" allowing better code generation. This has been already done on other architectures (see the commit: 0453fb3c528c5eb3483441a466b24a4cb409eec5). Many thanks to Christian Bruel <christain.bruel@st.com> for his support on evaluate the impact of the gcc built-in on SH4 arch. No regressions found while testing with LMbench on STLinux targets. Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com> Signed-off-by: Stuart Menefy <stuart.menefy@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
*---. Merge branches 'sh/pio-death', 'sh/nommu', 'sh/clkfwk', 'sh/core' and ↵Paul Mundt2010-11-07
|\ \ \ | | | | | | | | | | | | 'sh/intc-extension' into sh-fixes-for-linus
| | | * sh: Simplify phys_addr_mask()/PTE_PHYS_MASK for 29/32-bit.Paul Mundt2010-11-03
| |_|/ |/| | | | | | | | | | | | | | | | | | | | Given that __in_29bit_mode() is a constant for the non-PMB case, we can simply use the PMB-facing version of phys_addr_mask() and drop the other variants. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * sh: nommu: Support building without an uncached mapping.Paul Mundt2010-11-03
| | | | | | | | | | | | | | | | | | | | | | | | | | | Now that nommu selects 32BIT we run in to the situation where SH-2A supports an uncached identity mapping by way of the BSC, while the SH-2 does not. This provides stubs for the PC manglers and tidies up some of the system*.h mess in the process. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| | * sh: nommu: use 32-bit phys mode.Paul Mundt2010-11-03
| |/ |/| | | | | | | | | | | | | | | The nommu code has regressed somewhat in that 29BIT gets set for the SH-2/2A configs regardless of the fact that they are really 32BIT sans MMU or PMB. This does a bit of tidying to get nommu properly selecting 32BIT as it was before. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: mach-edosk7705: Kill off machtype, consolidate board def.Paul Mundt2010-10-29
| | | | | | | | | | | | Trivial shuffling and tidying. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: mach-systemh: Kill off dead board.Paul Mundt2010-10-29
| | | | | | | | | | | | | | | | | | This code has been untouched since it was merged many years ago, and has severely bitrotted since, suggesting that the board has no real users left. Notice of intent to remove has been sent out over the last few years, with no takers. Kill it off. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: mach-snapgear: Kill off machtype, consolidate board def.Paul Mundt2010-10-29
| | | | | | | | | | | | | | Only the secureedge5410 was ever supported by this code, so make the board specification explicit rather than perpetuating a mach group. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: mach-snapgear: Rip out superfluous PIO routines.Paul Mundt2010-10-29
| | | | | | | | | | | | | | None of these PIO routines do anything other than basic error checking, get rid of them and use the generic fallbacks. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: mach-microdev: SuperIO-relative ioport mapping.Paul Mundt2010-10-29
|/ | | | | | | | | | | | | The microdev only has to contend with silly PIO mangling on anything within the SuperIO range. As each of the SuperIO modules is already speciail cased, we just shift that logic over to the ioport map. With microdev PCI never being merged (and being fudamentally broken in hardware), and the ethernet chip only doing 16-bit accesses already, there's no need to maintain any of the extra special casing. Kill it all off. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6Linus Torvalds2010-10-28
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (32 commits) sh: intc: switch irq_desc iteration to new active IRQ iterator. sh: fix up cpu hotplug IRQ migration for irq_data changes. sh: oprofile: Make sure the backtrace op is available for timer-fallback. sh64: oprofile: Fix up kernel stack pointer size mismatch. sh: oprofile: Fix up and extend op_name_from_perf_id(). sh: lockless get_user_pages_fast() sh64: _PAGE_SPECIAL support. sound: sh: ctrl_in/outX to __raw_read/writeX conversion. sh: disable deprecated genirq support. sh: update show_interrupts() for irq_data chip lookup. sh: intc: irq_data conversion. sh64: irq_data conversion. sh64: update for IRQ flag handling naming changes. rtc: rtc-rs5c313: ctrl_in/outX to __raw_read/writeX conversion. sh: mach-se: irq_data conversion. input: hp680_ts_input: ctrl_in/outX to __raw_read/writeX conversion. input: jornada680_kbd: ctrl_in/outX to __raw_read/writeX conversion. sh: hd64461: irq_data conversion. sh: mach-x3proto: irq_data conversion. sh: mach-systemh: irq_data conversion. ...
| * sh64: _PAGE_SPECIAL support.Paul Mundt2010-10-27
| | | | | | | | | | | | | | Now that sh64 has grown extended page flag support we finally have a free bit for _PAGE_SPECIAL. Wire it up. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Expose physical addressing mode through cpuinfo.Paul Mundt2010-10-26
| | | | | | | | | | | | | | | | | | | | | | CPUs can be in either the legacy 29-bit or 32-bit physical addressing modes. This follows the x86 approach of tracking the phys bits in cpuinfo and exposing it to userspace through procfs. This change was requested to permit kexec-tools to detect the physical addressing mode in order to determine the appropriate address mangling. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* | mm: remove pte_*map_nested()Peter Zijlstra2010-10-26
|/ | | | | | | | | | | | | | | | | | | | | | Since we no longer need to provide KM_type, the whole pte_*map_nested() API is now redundant, remove it. Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl> Acked-by: Chris Metcalf <cmetcalf@tilera.com> Cc: David Howells <dhowells@redhat.com> Cc: Hugh Dickins <hughd@google.com> Cc: Rik van Riel <riel@redhat.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Cc: Steven Rostedt <rostedt@goodmis.org> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: David Miller <davem@davemloft.net> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6Linus Torvalds2010-10-25
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: (110 commits) sh: i2c-sh7760: Replase from ctrl_* to __raw_* sh: clkfwk: Shuffle around to match the intc split up. sh: clkfwk: modify for_each_frequency end condition sh: fix clk_get() error handling sh: clkfwk: Fix fault in frequency iterator. sh: clkfwk: Add a helper for rate rounding by divisor ranges. sh: clkfwk: Abstract rate rounding helper. sh: clkfwk: support clock remapping. sh: pci: Convert to upper/lower_32_bits() helpers. sh: mach-sdk7786: Add support for the FPGA SRAM. sh: Provide a generic SRAM pool for tiny memories. sh: pci: Support secondary FPGA-driven PCIe clocks on SDK7786. sh: pci: Support slot 4 routing on SDK7786. sh: Fix up PMB locking. sh: mach-sdk7786: Add support for fpga gpios. sh: use pr_fmt for clock framework, too. sh: remove name and id from struct clk sh: free-without-alloc fix for sh_mobile_lcdcfb sh: perf: Set up perf_max_events. sh: perf: Support SH-X3 hardware counters. ... Fix up trivial conflicts (perf_max_events got removed) in arch/sh/kernel/perf_event.c
| * sh: mach-sdk7786: Add support for the FPGA SRAM.Paul Mundt2010-10-14
| | | | | | | | | | | | This ties in the 2KiB of FPGA SRAM in to the generic SRAM pool. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Provide a generic SRAM pool for tiny memories.Paul Mundt2010-10-14
| | | | | | | | | | | | | | | | | | | | | | | | This sets up a generic SRAM pool for CPUs and platform code to insert their otherwise unused memories into. A simple alloc/free interface is provided (lifed from avr32) for generic code. This only applies to tiny SRAMs that are otherwise unmanaged, and does not take in to account the more complex SRAMs sitting behind transfer engines, or that employ an I/D split. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: pci: Support secondary FPGA-driven PCIe clocks on SDK7786.Paul Mundt2010-10-13
| | | | | | | | | | | | | | | | | | | | The SDK7786 FPGA has secondary control over the PCIe clocks, specifically relating to the slots and oscillator. This ties the FPGA clocks in to the clock framework and balances the refcounting similar to how the primary on-chip clocks are managed. While the on-chip clocks are per-port, the FPGA clock enable/disable is global for the entire block. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: pci: Support slot 4 routing on SDK7786.Paul Mundt2010-10-13
| | | | | | | | | | | | | | | | | | | | | | | | | | SDK7786 supports connecting either slot3 or 4 to the same PCIe port by way of FPGA muxing. By default the vertical slot 3 on the baseboard is enabled, so this adds in a command line option for forcibly enabling the slot 4 edge connector. If nothing has been specified on the command line, we fall back to reading the resistor values for card presence to figure out where to route the port to. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: wire up perf alignment and emulation faults.Paul Mundt2010-10-12
| | | | | | | | | | | | | | This plugs in the alignment and emulation fault reporting for perf sw events. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Fix up the SH-3 build.Paul Mundt2010-10-06
| | | | | | | | | | | | | | | | | | | | SH-3 lacks an MMUCR_TI definition for global TLB flushes. As SH-3 parts lack a split TLB, the same global flush behaviour is accomplished through the flush bit, which just happens to be the same as on SH-4. This fixes up the build for all SH-3 MMU parts. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: mach-x3proto: Support for baseboard GPIOs.Paul Mundt2010-10-03
| | | | | | | | | | | | | | This adds trivial support for the GPIOs implemented through the baseboard CPLD, used for driving the button matrix. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: mach-x3proto: Move the ilsel header to a better place.Paul Mundt2010-10-03
| | | | | | | | | | | | | | We'll be adding more headers for this board, so move this over to its own directory. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Allow GPIO chips to register IRQ mappings.Paul Mundt2010-10-02
| | | | | | | | | | | | | | As non-PFC chips are added that may support IRQs, pass through to the generic helper instead of triggering the WARN_ON(). Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: pinmux support for SH-X3 proto CPUs.Paul Mundt2010-10-02
| | | | | | | | | | | | | | This adds in support for GPIO/pinmux on the SH-X3 proto CPUs. This will subsequently be used by the x3proto board. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Update SH-X3 subtype for clkdev lookups.Paul Mundt2010-10-01
| | | | | | | | | | | | Rewrite the SH-X3 proto CPU clock framework for clkdev. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: provide generic arch_debugfs_dir.Paul Mundt2010-09-23
| | | | | | | | | | | | | | | | | | While sh previously had its own debugfs root, there now exists a common arch_debugfs_dir prototype, so we switch everything over to that. Presumably once more architectures start making use of this we'll be able to just kill off the stub kdebugfs wrapper. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: pci: Use a generic raw spinlock for PCI config access locking.Paul Mundt2010-09-20
| | | | | | | | | | | | | | | | | | | | This copies the pci_config_lock idea from x86 over, allowing us to kill off a couple of existing private locks. At the same time, these need to be converted to raw spinlocks for -rt kernels, so we make that change at the same time. This should make it easier for future parts to get the locking right instead of inevitable ending up with lock type mismatches. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Provide a non-multiplexed sys_recvmmsg path.Paul Mundt2010-09-14
| | | | | | | | | | | | | | | | | | Now that the rest of the socket calls are provided through their own paths, do the same for sys_recvmmsg. It's unlikely we'll ever be able to kill off the socketcall path, but this at least permits userspace to gradually begin migrating. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * sh: Add syscall entries for non multiplexed socket callsCarmelo AMOROSO2010-09-14
| | | | | | | | | | | | | | | | | | | | | | | | Linux kernel already has socket syscalls that can be invoked without the multiplexing sys_socketcall wrapper. C library wrappers are ready to use them directly. It needs just to define the missing syscall numbers and provide the related entries into the syscalls table, like sh64 aleady does. Signed-off-by: Francesco Rundo <francesco.rundo@st.com> Signed-off-by: Carmelo Amoroso <carmelo.amoroso@st.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * Merge branch 'master' of ↵Paul Mundt2010-08-20
| |\ | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: arch/sh/kernel/process_32.c Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | sh: wire up fanotify/prlimit64 syscalls.Paul Mundt2010-08-16
| | | | | | | | | | | | Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | Merge branch 'master' of ↵Paul Mundt2010-08-16
| |\| | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6 Conflicts: arch/sh/include/asm/Kbuild drivers/Makefile Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | Merge branch 'master' of ↵Paul Mundt2010-08-04
| |\ \ | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
| * | | sh: modify pinmux for SH7757 2nd cutYoshihiro Shimoda2010-07-06
| | | | | | | | | | | | | | | | | | | | Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | sh: modify NR_IRQS from 256 to 512Yoshihiro Shimoda2010-07-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Newer parts need NR_IRQS > 256, so simply bump this up to 512 across the board. At this point sparseirq is used unconditionally across all CPUs, so this introduces minimal overhead. Signed-off-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | sh: Drop dependence for 29bit mode of trigger_address_error()Nobuhiro Iwamatsu2010-07-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When CONFIG_PMB enable, ITLB is not cleared by reset of watchdog timer. This should use trigger_address_error(). Signed-off-by: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | sh: Provide a global TLB flush for U/I-TLB clear.Paul Mundt2010-07-02
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This provides a sledgehammer approach for clearing the TLBs, only to be used in cases where we know we will never want to use the mappings again and have no interest in preserving state. This also destroys wired entries. The primary use for this is when we are either entering or exiting the kernel completely, in the latter case as a precursor for CPU reset by MMU. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | sh: fix up an off-by-1 in the number of early ioremap fixmaps.Paul Mundt2010-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | There was an off-by-1 in the begin/end of the ioremap fixmaps, leaving us with a spurious entry. In practice this wasn't a problem since we aligned on a PMD boundary anyways, but this makes it consistent with the intention and the other fixmaps. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | sh: SH-2007 board support.Hitoshi Mitake2010-06-21
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch series adds support for ITO Co., Ltd.'s SH-2007 reference platform (A PC-104 based SH7780 platform). This is a direct port of the out-of-tree board support from the vendor's kernel, originally located at: http://ms-n.org/sh-linux/kernel/ More information on the board and the vendor can be obtained from the vendor's site at: http://www.itonet.co.jp/ Presently supported peripherals are CF and ethernet, with support for the on-board IDE still pending further testing. Reviewed-by: Nobuhiro Iwamatsu <iwamatsu@nigauri.org> Reviewed-by: Magnus Damm <magnus.damm@gmail.com> Signed-off-by: Hitoshi Mitake <mitake@dcl.info.waseda.ac.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | sh: update the FDPIC relocations.Paul Mundt2010-06-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Now that the FDPIC relocations have been given fixed numbers upstream, switch to using those. The previous values only applied to experimental toolchains that never made it in to the wild, so the impact remains minimal. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | sh: split out ptrace header for _32/_64 variants.Paul Mundt2010-06-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | asm/ptrace.h is getting a bit messy, with the _32/_64-specific changes being fairly insular. This splits out the header accordingly. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
| * | | sh: Add kprobe-based event tracer.Paul Mundt2010-06-14
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This follows the x86/ppc changes for kprobe-based event tracing on sh. While kprobes is only supported on 32-bit sh, we provide the API for HAVE_REGS_AND_STACK_ACCESS_API for both 32 and 64-bit. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
* | | | Merge branch 'core-memblock-for-linus' of ↵Linus Torvalds2010-10-21
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'core-memblock-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: (74 commits) x86-64: Only set max_pfn_mapped to 512 MiB if we enter via head_64.S xen: Cope with unmapped pages when initializing kernel pagetable memblock, bootmem: Round pfn properly for memory and reserved regions memblock: Annotate memblock functions with __init_memblock memblock: Allow memblock_init to be called early memblock/arm: Fix memblock_region_is_memory() typo x86, memblock: Remove __memblock_x86_find_in_range_size() memblock: Fix wraparound in find_region() x86-32, memblock: Make add_highpages honor early reserved ranges x86, memblock: Fix crashkernel allocation arm, memblock: Fix the sparsemem build memblock: Fix section mismatch warnings powerpc, memblock: Fix memblock API change fallout memblock, microblaze: Fix memblock API change fallout x86: Remove old bootmem code x86, memblock: Use memblock_memory_size()/memblock_free_memory_size() to get correct dma_reserve x86: Remove not used early_res code x86, memblock: Replace e820_/_early string with memblock_ x86: Use memblock to replace early_res x86, memblock: Use memblock_debug to control debug message print out ... Fix up trivial conflicts in arch/x86/kernel/setup.c and kernel/Makefile
| * \ \ \ Merge commit 'v2.6.36-rc3' into x86/memblockIngo Molnar2010-08-31
| |\ \ \ \ | | | |_|/ | | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Conflicts: arch/x86/kernel/trampoline.c mm/memblock.c Merge reason: Resolve the conflicts, update to latest upstream. Signed-off-by: Ingo Molnar <mingo@elte.hu>
| * | | | memblock: Introduce default allocation limit and use it to replace explicit onesBenjamin Herrenschmidt2010-08-04
| | |_|/ | |/| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This introduce memblock.current_limit which is used to limit allocations from memblock_alloc() or memblock_alloc_base(..., MEMBLOCK_ALLOC_ACCESSIBLE). The old MEMBLOCK_ALLOC_ANYWHERE changes value from 0 to ~(u64)0 and can still be used with memblock_alloc_base() to allocate really anywhere. It is -no-longer- cropped to MEMBLOCK_REAL_LIMIT which disappears. Note to archs: I'm leaving the default limit to MEMBLOCK_ALLOC_ANYWHERE. I strongly recommend that you ensure that you set an appropriate limit during boot in order to guarantee that an memblock_alloc() at any time results in something that is accessible with a simple __va(). The reason is that a subsequent patch will introduce the ability for the array to resize itself by reallocating itself. The MEMBLOCK core will honor the current limit when performing those allocations. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
* | | | Merge git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-irqflagsLinus Torvalds2010-10-21
|\ \ \ \ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/dhowells/linux-2.6-irqflags: Fix IRQ flag handling naming MIPS: Add missing #inclusions of <linux/irq.h> smc91x: Add missing #inclusion of <linux/irq.h> Drop a couple of unnecessary asm/system.h inclusions SH: Add missing consts to sys_execve() declaration Blackfin: Rename IRQ flags handling functions Blackfin: Add missing dep to asm/irqflags.h Blackfin: Rename DES PC2() symbol to avoid collision Blackfin: Split the BF532 BFIN_*_FIO_FLAG() functions to their own header Blackfin: Split PLL code from mach-specific cdef headers
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