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2010-02-15omap3: Replace ARCH_OMAP34XX with ARCH_OMAP3Tony Lindgren16-80/+76
Replace ARCH_OMAP34XX with ARCH_OMAP3 Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-15omap2: Convert ARCH_OMAP24XX to ARCH_OMAP2Tony Lindgren17-61/+57
Convert ARCH_OMAP24XX to ARCH_OMAP2 Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-15omap2/3/4: Fix mbox init for multi-omapTony Lindgren1-6/+24
Fix mbox init for multi-omap Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-15omap2/3/4: Fix omap2_map_common_io for multi-omapTony Lindgren22-38/+86
Fix omap2_map_common_io for multi-omap Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-15omap: Fix dmtimer.c for multi-omap bootTony Lindgren1-51/+39
Fix dmtimer.c for multi-omap boot. Also remove legacy clk_enable/disable wrappers that are no longer needed. Note that the clock handling should be further improved to make use of the clock aliases. Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-15omap2/3: Multiboot compile fixes to compile in omap2 and omap3Tony Lindgren5-5/+52
Allows compiling in omap2 and omap3. Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-15omap2/3: Make get_irqnr_and_base common for mach-omap2 multibootTony Lindgren1-20/+57
Make get_irqnr_and_base common for mach-omap2 multiboot Thanks to a tip from Russell King <rmk+kernel@arm.linux.org.uk>, this also optimizes the code for non-multiboot configurations by using get_irqnr_preamble. Note that this will only work currently for 24xx and 34xx. Support for 44xx can be added later on for basic multiboot, and similar patch should be done for mach-omap1/entry-macro.S. Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-15Merge branch 'debug-ll' into omap-for-linusTony Lindgren58-243/+507
2010-02-15omap: Remove old DEBUG_LL serial port optionsTony Lindgren1-19/+0
These are no longer needed. Note that zoom boards should now set their own function in uncompress.h and debug-macro.S for the external UART. Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-15omap: Make uncompress code and DEBUG_LL code genericTony Lindgren4-82/+322
Define arch_decomp_setup() the same way as some other architectures do. Use arch_id to configure the debug uart based on the machine_is by storing it into the uart scratchpad register for DEBUG_LL code to use. Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-15omap: Clean the serial port definesTony Lindgren11-87/+130
This way we don't have conflicts with the defines with compiling in multiple omaps. Set the addresses for uarts in struct omap_globals for the early serial init code. Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-12Merge branch 'for-tony' of git://gitorious.org/linux-omap-dss2/linux into ↵Tony Lindgren3-12/+618
omap-for-linus
2010-02-12ARM: 5910/1: ARM: Add tmp register for addruart and loadspTony Lindgren48-64/+64
Otherwise more complicated uart configuration won't be possible. We can use r1 for tmp register for both head.S and debug.S. NOTE: This patch depends on another patch to add the the tmp register into all debug-macro.S files. That can be done with: $ sed -i -e "s/addruart,rx|addruart, rx/addruart, rx, tmp/" arch/arm/*/include/*/debug-macro.S Signed-off-by: Tony Lindgren <tony@atomide.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-02-12omap3: cm-t35: add DSS2 display supportMike Rapoport1-1/+238
Signed-off-by: Mike Rapoport <mike@compulab.co.il> Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
2010-02-12OMAP: AM3517: Enable DSS2 for AM3517EVM boardVaibhav Hiremath1-0/+145
Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com> [tomi.valkeinen@nokia.com: removed defconfig changes] Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
2010-02-12OMAP: Enable DSS2 for OMAP3EVM boardVaibhav Hiremath1-11/+235
Signed-off-by: Vaibhav Hiremath <hvaibhav@ti.com> [tomi.valkeinen@nokia.com: removed evm defconfig changes] Signed-off-by: Tomi Valkeinen <tomi.valkeinen@nokia.com>
2010-02-11Merge branch 'omap-fixes-for-linus' into omap-for-linusTony Lindgren142-3253/+5556
2010-02-10OMAP: hsmmc: fix memory leakAaro Koskinen1-1/+6
The platform data allocated with kmalloc() will become unreachable once the init is complete, so it should be freed. The problem was discovered by kmemleak. Signed-off-by: Aaro Koskinen <aaro.koskinen@nokia.com> Acked-by: Adrian Hunter <adrian.hunter@nokia.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-05Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds12-30/+195
* master.kernel.org:/home/rmk/linux-2.6-arm: ARM: Fix wrong register in proc-arm6_7.S data abort handler ARM: 5909/1: ARM: Correct the FPSCR bits setting when raising exceptions ARM: 5904/1: ARM: Always generate the IT instruction when compiling for Thumb-2 ARM: 5907/1: ARM: Fix the reset on the RealView PBX Development board mx35: add a missing comma in a pad definition mx25: make the FEC AHB clk secondary of the IPG mx25: fix time accounting mx25: properly initialize clocks mx25: remove unused mx25_clocks_init() argument i.MX25: implement secondary clocks for uarts and fec i.MX25: Allow secondary clocks in DEFINE_CLOCK ARM: MX3: Fixed typo in declared enum type name. MXC: Add AUDMUXv2 register decode to debugfs mx31ads: Provide an IRQ range to the WM835x on the 1133-EV1 module mx31ads: Provide a name for EXPIO interrupt chip mx31ads: Allow enable/disable of switchable supplies
2010-02-05Merge branch 'omap-fixes-for-linus' of ↵Linus Torvalds9-19/+77
git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6 * 'omap-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tmlind/linux-omap-2.6: omap: Disable serial port autoidle by default omap: Fix access to already released memory in clk_debugfs_register_one() omap: Fix arch/arm/mach-omap2/mux.c: Off by one error omap: Fix 3630 mux errors OMAP2/3: GPMC: ensure valid clock pointer OMAP2/3: IRQ: ensure valid base address ARCH OMAP : enable ARCH_HAS_HOLES_MEMORYMODEL for OMAP omap: Remove old unused defines for OMAP_32KSYNCT_BASE omap: define _toggle_gpio_edge_triggering only for OMAP1
2010-02-03omap: Disable serial port autoidle by defaultTony Lindgren1-2/+9
Currently the omap serial clocks are autoidled after 5 seconds. However, this causes lost characters on the serial ports. As this is considered non-standard behaviour for Linux, disable the timeout. Note that this will also cause blocking of any deeper omap sleep states. To enable the autoidling of the serial ports, do something like this for each serial port: # echo 5 > /sys/devices/platform/serial8250.0/sleep_timeout # echo 5 > /sys/devices/platform/serial8250.1/sleep_timeout ... Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-03omap: Fix access to already released memory in clk_debugfs_register_one()Marek Skuczynski1-2/+2
I have found an access to already released memory in clk_debugfs_register_one() function. Signed-off-by: Marek Skuczynski <mareksk7@gmail.com> Acked-by: Paul Walmsley <paul@pwsan.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-03omap: Fix arch/arm/mach-omap2/mux.c: Off by one errorTony Lindgren1-1/+2
David Binderman ran the sourceforge tool cppcheck over the source code of the new Linux kernel 2.6.33-rc6: [./arm/mach-omap2/mux.c:492]: (error) Buffer access out-of-bounds 13 characters + 1 digit + 1 zero byte is more than 14 characters. Also add a comment on mode0 name length in case new omaps start using longer names. Reported-by: David Binderman <dcb314@hotmail.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-03omap: Fix 3630 mux errorsTony Lindgren2-0/+54
3630 has more mux signals than 34xx. The additional pins exist in omap36xx_cbp_subset, but are not initialized as the superset is missing these offsets. This causes the following errors during the boot: mux: Unknown entry offset 0x236 mux: Unknown entry offset 0x22e mux: Unknown entry offset 0x1ec mux: Unknown entry offset 0x1ee mux: Unknown entry offset 0x1f4 mux: Unknown entry offset 0x1f6 mux: Unknown entry offset 0x1f8 mux: Unknown entry offset 0x1fa mux: Unknown entry offset 0x1fc mux: Unknown entry offset 0x22a mux: Unknown entry offset 0x226 mux: Unknown entry offset 0x230 mux: Unknown entry offset 0x22c mux: Unknown entry offset 0x228 Fix this by adding the missing offsets to omap3 superset. Note that additionally the uninitialized pins need to be skipped on 34xx. Based on an earlier patch by Allen Pais <allen.pais@ti.com>. Reported-by: Allen Pais <allen.pais@ti.com> Signed-off-by: Allen Pais <allen.pais@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-03OMAP2/3: GPMC: ensure valid clock pointerKevin Hilman1-1/+4
Ensure valid clock pointer during GPMC init. Fixes compiler warning about potential use of uninitialized variable. Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-03OMAP2/3: IRQ: ensure valid base addressKevin Hilman1-1/+3
Ensure valid base address during IRQ init. Fixes compiler warning about potential use of uninitialized variable. Signed-off-by: Kevin Hilman <khilman@deeprootsystems.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-03ARCH OMAP : enable ARCH_HAS_HOLES_MEMORYMODEL for OMAPSriram1-0/+1
OMAP platforms(like OMAP3530) include DSP or other co-processors for media acceleration. when carving out memory for the accelerators we can end up creating a hole in the memory map of sort: <kernel memory><hole(memory for accelerator)><kernel memory> To handle such a memory configuration ARCH_HAS_HOLES_MEMORYMODEL has to be enabled. For further information refer discussion at: http://www.mail-archive.com/linux-omap@vger.kernel.org/msg15262.html. Signed-off-by: Sriramakrishnan <srk@ti.com> Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-03omap: Remove old unused defines for OMAP_32KSYNCT_BASETony Lindgren1-10/+0
Remove old unused defines for OMAP_32KSYNCT_BASE Signed-off-by: Tony Lindgren <tony@atomide.com>
2010-02-03ARM: Fix wrong register in proc-arm6_7.S data abort handlerRussell King1-1/+1
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-02-03microblaze: fix interrupt state restoreSteven J. Magnani1-4/+6
Interrupts must be disabled while an interrupt state restore (prep for interrupt return) is in progress. Code to do this was lost in the port to the mainline kernel. Signed-off-by: Steven J. Magnani <steve@digidescorp.com> Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-02-03microblaze: Defconfig updateMichal Simek2-44/+169
There were several changes in Microblaze defconfig that's why is good to update defconfigs. Signed-off-by: Michal Simek <monstr@monstr.eu>
2010-02-03memory hotplug: fix a bug on /dev/mem for 64-bit kernelsShaohui Zheng1-0/+19
Newly added memory can not be accessed via /dev/mem, because we do not update the variables high_memory, max_pfn and max_low_pfn. Add a function update_end_of_memory_vars() to update these variables for 64-bit kernels. [akpm@linux-foundation.org: simplify comment] Signed-off-by: Shaohui Zheng <shaohui.zheng@intel.com> Cc: Andi Kleen <ak@linux.intel.com> Cc: Li Haicheng <haicheng.li@intel.com> Reviewed-by: Wu Fengguang <fengguang.wu@intel.com> Reviewed-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Ingo Molnar <mingo@elte.hu> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: "H. Peter Anvin" <hpa@zytor.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2010-02-02Merge branch 'sh/for-2.6.33' of ↵Linus Torvalds2-6/+6
git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6 * 'sh/for-2.6.33' of git://git.kernel.org/pub/scm/linux/kernel/git/lethal/sh-2.6: sh: Fix access to released memory in clk_debugfs_register_one() sh: Fix access to released memory in dwarf_unwinder_cleanup() usb: r8a66597-hdc disable interrupts fix spi: spi_sh_msiof: Fixed data sampling on the correct edge
2010-02-02Merge branch 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linusLinus Torvalds7-4/+31
* 'upstream' of git://ftp.linux-mips.org/pub/scm/upstream-linus: MIPS: 64-bit: Detect virtual memory size MIPS: AR7: Fix USB slave mem range typo MIPS: Alchemy: Fix dbdma ring destruction memory debugcheck.
2010-02-02MIPS: 64-bit: Detect virtual memory sizeGuenter Roeck4-1/+24
Linux kernel 2.6.32 and later allocate address space from the top of the kernel virtual memory address space. This patch implements virtual memory size detection for 64 bit MIPS CPUs to avoid resulting crashes. Signed-off-by: Guenter Roeck <guenter.roeck@ericsson.com> Cc: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/935/ Reviewed-by: David Daney <ddaney@caviumnetworks.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-02-02sh: Fix access to released memory in clk_debugfs_register_one()Marek Skuczynski1-2/+2
Signed-off-by: Marek Skuczynski <mareksk7@gmail.com> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-02sh: Fix access to released memory in dwarf_unwinder_cleanup()Marek Skuczynski1-4/+4
Signed-off-by: Marek Skuczynski <mareksk7@gmail.com> Acked-by: Matt Fleming <matt@console-pimps.org> Signed-off-by: Paul Mundt <lethal@linux-sh.org>
2010-02-01Merge branch 'for-rmk' of git://git.pengutronix.de/git/imx/linux-2.6Russell King8-25/+187
2010-02-01ARM: 5909/1: ARM: Correct the FPSCR bits setting when raising exceptionsCatalin Marinas1-1/+4
Commit c98929c07a removed the clearing of the FPSCR[31:28] bits from the vfp_raise_exceptions() function and the new bits are or'ed with the old FPSCR bits leading to unexpected results (the original commit was referring to the cumulative bits - FPSCR[4:0]). Reported-by: Tom Hameenanttila <tmhameen@marvell.com> Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-02-01MIPS: AR7: Fix USB slave mem range typoAlexander Clouter1-1/+1
Signed-off-by: Alexander Clouter <alex@digriz.org.uk> To: linux-mips@linux-mips.org Patchwork: http://patchwork.linux-mips.org/patch/919/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-02-01MIPS: Alchemy: Fix dbdma ring destruction memory debugcheck.Manuel Lauss2-2/+6
DBDMA descriptors need to be located at 32-byte aligned addresses; however kmalloc in conjunction with the SLAB allocator and CONFIG_DEBUG_SLUB enabled doesn't deliver any. The dbdma code works around that by allocating a larger area and realigning the start address within it. When freeing a channel however this adjustment is not taken into account which results in an oops: Kernel bug detected[#1]: [...] Call Trace: [<80186010>] cache_free_debugcheck+0x284/0x318 [<801869d8>] kfree+0xe8/0x2a0 [<8010b31c>] au1xxx_dbdma_chan_free+0x2c/0x7c [<80388dc8>] au1x_pcm_dbdma_free+0x34/0x4c [<80388fa8>] au1xpsc_pcm_close+0x28/0x38 [<80383cb8>] soc_codec_close+0x14c/0x1cc [<8036dbb4>] snd_pcm_release_substream+0x60/0xac [<8036dc40>] snd_pcm_release+0x40/0xa0 [<8018c7a8>] __fput+0x11c/0x228 [<80188f60>] filp_close+0x7c/0x98 [<80189018>] sys_close+0x9c/0xe4 [<801022a0>] stack_done+0x20/0x3c Fix this by recording the address delivered by kmalloc() and using it as parameter to kfree(). This fix is only necessary with the SLAB allocator and CONFIG_DEBUG_SLAB enabled; non-debug SLAB, SLUB do return nicely aligned addresses, debug-enabled SLUB currently panics early in the boot process. Signed-off-by: Manuel Lauss <manuel.lauss@gmail.com> To: Linux-MIPS <linux-mips@linux-mips.org> Cc: Manuel Lauss <manuel.lauss@gmail.com> Patchwork: http://patchwork.linux-mips.org/patch/878/ Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
2010-02-01Merge branch 'perf-fixes-for-linus' of ↵Linus Torvalds1-57/+165
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'perf-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: perf, hw_breakpoint, kgdb: Do not take mutex for kernel debugger x86, hw_breakpoints, kgdb: Fix kgdb to use hw_breakpoint API hw_breakpoints: Release the bp slot if arch_validate_hwbkpt_settings() fails. perf: Ignore perf.data.old perf report: Fix segmentation fault when running with '-g none'
2010-02-01Merge branch 'x86-fixes-for-linus' of ↵Linus Torvalds7-12/+54
git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip * 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/linux-2.6-tip: x86/agp: Fix agp_amd64_init regression x86: Add quirk for Intel DG45FC board to avoid low memory corruption x86: Add Dell OptiPlex 760 reboot quirk x86, UV: Fix RTC latency bug by reading replicated cachelines oprofile/x86: add Xeon 7500 series support oprofile/x86: fix crash when profiling more than 28 events lib/dma-debug.c: mark file-local struct symbol static. x86/amd-iommu: Fix deassignment of a device from the pt_domain x86/amd-iommu: Fix IOMMU-API initialization for iommu=pt x86/amd-iommu: Fix NULL pointer dereference in __detach_device() x86/amd-iommu: Fix possible integer overflow
2010-02-01Merge branch 'merge' of ↵Linus Torvalds26-1297/+3406
git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc: powerpc: TIF_ABI_PENDING bit removal powerpc/pseries: Fix xics build without CONFIG_SMP powerpc/4xx: Add pcix type 1 transactions powerpc/pci: Add missing call to header fixup powerpc/pci: Add missing hookup to pci_slot powerpc/pci: Add calls to set_pcie_port_type() and set_pcie_hotplug_bridge() powerpc/40x: Update the PowerPC 40x board defconfigs powerpc/44x: Update PowerPC 44x board defconfigs
2010-02-01powerpc: TIF_ABI_PENDING bit removalAndreas Schwab3-20/+2
Here are the powerpc bits to remove TIF_ABI_PENDING now that set_personality() is called at the appropriate place in exec. Signed-off-by: Andreas Schwab <schwab@linux-m68k.org> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-02-01powerpc/pseries: Fix xics build without CONFIG_SMPBenjamin Herrenschmidt1-5/+1
desc->affinity doesn't exit in that case. Let's use a macro for the UP variant of get_irq_server(), it's the easiest way, avoids evaluating arguments. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
2010-01-30ARM: 5904/1: ARM: Always generate the IT instruction when compiling for Thumb-2Catalin Marinas1-1/+1
Current behaviour is to generate the IT instruction only for Thumb-2 code. However, the kernel helpers in entry-armv.S are compiled to ARM in a unified syntax file (if THUMB2_KERNEL). Recent compilers warn about missing IT instruction in unified assembly syntax files. The patch changes the "-mimplicit-it" gas option to "always". Signed-off-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-01-30ARM: 5907/1: ARM: Fix the reset on the RealView PBX Development boardColin Tuckley1-2/+2
Signed-off-by: Colin Tuckley <colin.tuckley@arm.com> Acked-by: Catalin Marinas <catalin.marinas@arm.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
2010-01-30perf, hw_breakpoint, kgdb: Do not take mutex for kernel debuggerJason Wessel1-0/+51
This patch fixes the regression in functionality where the kernel debugger and the perf API do not nicely share hw breakpoint reservations. The kernel debugger cannot use any mutex_lock() calls because it can start the kernel running from an invalid context. A mutex free version of the reservation API needed to get created for the kernel debugger to safely update hw breakpoint reservations. The possibility for a breakpoint reservation to be concurrently processed at the time that kgdb interrupts the system is improbable. Should this corner case occur the end user is warned, and the kernel debugger will prohibit updating the hardware breakpoint reservations. Any time the kernel debugger reserves a hardware breakpoint it will be a system wide reservation. Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: kgdb-bugreport@lists.sourceforge.net Cc: K.Prasad <prasad@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: torvalds@linux-foundation.org LKML-Reference: <1264719883-7285-3-git-send-email-jason.wessel@windriver.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
2010-01-30x86, hw_breakpoints, kgdb: Fix kgdb to use hw_breakpoint APIJason Wessel1-57/+114
In the 2.6.33 kernel, the hw_breakpoint API is now used for the performance event counters. The hw_breakpoint_handler() now consumes the hw breakpoints that were previously set by kgdb arch specific code. In order for kgdb to work in conjunction with this core API change, kgdb must use some of the low level functions of the hw_breakpoint API to install, uninstall, and deal with hw breakpoint reservations. The kgdb core required a change to call kgdb_disable_hw_debug anytime a slave cpu enters kgdb_wait() in order to keep all the hw breakpoints in sync as well as to prevent hitting a hw breakpoint while kgdb is active. During the architecture specific initialization of kgdb, it will pre-allocate 4 disabled (struct perf event **) structures. Kgdb will use these to manage the capabilities for the 4 hw breakpoint registers, per cpu. Right now the hw_breakpoint API does not have a way to ask how many breakpoints are available, on each CPU so it is possible that the install of a breakpoint might fail when kgdb restores the system to the run state. The intent of this patch is to first get the basic functionality of hw breakpoints working and leave it to the person debugging the kernel to understand what hw breakpoints are in use and what restrictions have been imposed as a result. Breakpoint constraints will be dealt with in a future patch. While atomic, the x86 specific kgdb code will call arch_uninstall_hw_breakpoint() and arch_install_hw_breakpoint() to manage the cpu specific hw breakpoints. The net result of these changes allow kgdb to use the same pool of hw_breakpoints that are used by the perf event API, but neither knows about future reservations for the available hw breakpoint slots. Signed-off-by: Jason Wessel <jason.wessel@windriver.com> Acked-by: Frederic Weisbecker <fweisbec@gmail.com> Cc: kgdb-bugreport@lists.sourceforge.net Cc: K.Prasad <prasad@linux.vnet.ibm.com> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Alan Stern <stern@rowland.harvard.edu> Cc: torvalds@linux-foundation.org LKML-Reference: <1264719883-7285-2-git-send-email-jason.wessel@windriver.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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