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* ide: remove stale ide.h "configuration options"Bartlomiej Zolnierkiewicz2008-01-25
| | | | | | | | | | | | | | | | | | | | Remove stale ide.h "configuration options": * INITIAL_MULT_COUNT - always defined to 0 * SUPPORT_SLOW_DATA_PORTS - unused * OK_TO_RESET_CONTROLLER - always defined to 1 * DISABLE_IRQ_NOSYNC - always defined to 0 Leave SUPPORT_VLB_SYNC (defined to 0 for CRIS and FRV, otherwise to 1) for now but disallow overriding it by <asm/ide.h>. There should be no functionality changes caused by this patch. Acked-by: Sergei Shtylyov <sshtylyov@ru.mvista.com> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* [POWERPC] Fix boot failure on POWER6Paul Mackerras2008-01-15
| | | | | | | | | | | | | | | | Commit 473980a99316c0e788bca50996375a2815124ce1 added a call to clear the SLB shadow buffer before registering it. Unfortunately this means that we clear out the entries that slb_initialize has previously set in there. On POWER6, the hypervisor uses the SLB shadow buffer when doing partition switches, and that means that after the next partition switch, each non-boot CPU has no SLB entries to map the kernel text and data, which causes it to crash. This fixes it by reverting most of 473980a9 and instead clearing the 3rd entry explicitly in slb_initialize. This fixes the problem that 473980a9 was trying to solve, but without breaking POWER6. Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Fix CPU hotplug when using the SLB shadow bufferMichael Neuling2008-01-11
| | | | | | | | | | | | | Before we register the SLB shadow buffer, we need to invalidate the entries in the buffer, otherwise we can end up stale entries from when we previously offlined the CPU. This does this invalidate as well as unregistering the buffer with PHYP before we offline the cpu. Tested and fixes crashes seen on 970MP (thanks to tonyb) and POWER5. Signed-off-by: Michael Neuling <mikey@neuling.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Oprofile: Remove dependency on spufs moduleBob Nelson2007-12-27
| | | | | | | | | | | | This removes an OProfile dependency on the spufs module. This dependency was causing a problem for multiplatform systems that are built with support for Oprofile on Cell but try to load the oprofile module on a non-Cell system. Signed-off-by: Bob Nelson <rrnelson@us.ibm.com> Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com> Acked-by: Jeremy Kerr <jk@ozlabs.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Kill non-existent symbols from ksyms and commproc.hJochen Friedrich2007-12-13
| | | | | | | | | | | | | | | | | | | | | | Remove exports of __res and cpm_install_handler/cpm_free_handler. Remove cpm_install_handler/cpm_free_handler from the commproc.h as well. Both were used for ARCH=ppc and aren't defined for ARCH=powerpc. CC arch/powerpc/kernel/ppc_ksyms.o arch/powerpc/kernel/ppc_ksyms.c:180: error: '__res' undeclared here (not in a function) arch/powerpc/kernel/ppc_ksyms.c:180: warning: type defaults to 'int' in declaration of '__res' make[1]: *** [arch/powerpc/kernel/ppc_ksyms.o] Error 1 make: *** [arch/powerpc/kernel] Error 2 LD .tmp_vmlinux1 arch/powerpc/kernel/built-in.o:(__ksymtab+0x198): undefined reference to `cpm_free_handler' arch/powerpc/kernel/built-in.o:(__ksymtab+0x1a0): undefined reference to `cpm_install_handler' make: *** [.tmp_vmlinux1] Error 1 Signed-off-by: Jochen Friedrich <jochen@scram.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Vitaly Bordug <vitb@kernel.crashing.org> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* Merge branch 'merge' of ↵Linus Torvalds2007-12-06
|\ | | | | | | | | | | | | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc * 'merge' of master.kernel.org:/pub/scm/linux/kernel/git/paulus/powerpc: [POWERPC] virtex bug fix: Use canonical value for AC97 interrupt xparams [POWERPC] Update defconfigs [POWERPC] PS3: Update ps3_defconfig [POWERPC] Update iseries_defconfig [POWERPC] Fix hardware IRQ time accounting problem.
| * [POWERPC] Fix hardware IRQ time accounting problem.Tony Breeds2007-12-06
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The commit fa13a5a1f25f671d084d8884be96fc48d9b68275 (sched: restore deterministic CPU accounting on powerpc), unconditionally calls update_process_tick() in system context. In the deterministic accounting case this is the correct thing to do. However, in the non-deterministic accounting case we need to not do this, since doing this results in the time accounted as hardware irq time being artificially elevated. Also this collapses 2 consecutive '#ifdef CONFIG_VIRT_CPU_ACCOUNTING' checks in time.h into one for neatness. Signed-off-by: Tony Breeds <tony@bakeyournoodle.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | [POWERPC] Fix swapper_pg_dir size when CONFIG_PTE_64BIT=y on FSL_BOOKEKumar Gala2007-12-06
|/ | | | | | | | | The size of swapper_pg_dir is 8k instead of 4k when using 64-bit PTEs (CONFIG_PTE_64BIT). This was reported by Cedric Hombourger <chombourger@gmail.com> Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* Revert "[POWERPC] Fix RTAS os-term usage on kernel panic"Paul Mackerras2007-12-02
| | | | | | | | | | | | This reverts commit a2b51812a4dc5db09ab4d4638d4d8ed456e2457e. It turns out that this change caused some machines to fail to come back up when being rebooted, and generated an error in the hypervisor error log on some machines. The platform architecture (PAPR) is a little unclear on exactly when the RTAS ibm,os-term function should be called. Until that is clarified I'm reverting this commit. Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Fix RTAS os-term usage on kernel panicLinas Vepstas2007-11-20
| | | | | | | | | | | | | | | | | | | The rtas_os_term() routine was being called at the wrong time. The actual rtas call "os-term" will not ever return, and so calling it from the panic notifier is too early. Instead, call it from the machine_reset() call. This splits the rtas_os_term() routine into two: one part to capture the kernel panic message, invoked during the panic notifier, and another part that is invoked during machine_reset(). Prior to this patch, the os-term call was never being made, because panic_timeout was always non-zero. Calling os-term helps keep the hypervisor happy! We have to keep the hypervisor happy to avoid service, dump and error reporting problems. Signed-off-by: Linas Vepstas <linas@austin.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] vdso: Fixes for cache block sizesOlof Johansson2007-11-19
| | | | | | | | | | | The current VDSO implementation is hardcoded to 128 byte cache blocks, which are only used on IBM's 64-bit processors. Convert it to get the cache block sizes out of vdso_data instead, similar to how the ppc64 in-kernel cache flush does it. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Fix kmalloc alignment on non-coherent DMA platformsBenjamin Herrenschmidt2007-11-19
| | | | | | | | | | On platforms doing non-coherent DMA (4xx, 8xx, ...), it's important that the kmalloc minimum alignment is set to the cache line size, to avoid sharing cache lines between different objects, so that DMA to one of the objects doesn't corrupt the other. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Fix declaration of pcibios_free_controllerBenjamin Herrenschmidt2007-11-18
| | | | | | | | | pcibios_free_controller() is now available for both 32 and 64 bits but the header only declares it for 64 bits. This moves the declaration down next to the pcibios_alloc_controller() one. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
* [POWERPC] Avoid unpaired stwcx. on some processorsBecky Bruce2007-11-13
| | | | | | | | | | | | | | | The context switch code in the kernel issues a dummy stwcx. to clear the reservation, as recommended by the architecture. However, some processors can have issues if this stwcx to address A occurs while the reservation is already held to a different address B. To avoid this problem, the dummy stwcx. needs to be paired with a dummy lwarx to the same address. This adds the dummy lwarx, and creates a cpu feature bit to indicate which cpus are affected. Tested on mpc8641_hpcn_defconfig in arch/powerpc; build tested in arch/ppc. Signed-off-by: Becky Bruce <becky.bruce@freescale.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* Merge branch 'for-2.6.24' of ↵Paul Mackerras2007-11-12
|\ | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/galak/powerpc into merge
| * [POWERPC] Fix oops related to 4xx flush_tlb_page modificationKumar Gala2007-11-09
| | | | | | | | | | | | | | | | | | kmap_atomic calls flush_tlb_page with a NULL VMA and thus we end up dereferencing a NULL pointer to try and get the context.id. If the VMA is null use the global pid value of 0. Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
* | Merge branch 'merge' of ↵Linus Torvalds2007-11-09
|\| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (37 commits) [POWERPC] EEH: Make sure warning message is printed [POWERPC] Make altivec code in swsusp_32.S depend on CONFIG_ALTIVEC [POWERPC] windfarm: Fix windfarm thread freezer interaction [POWERPC] Fix si_addr value on low level hash failures [POWERPC] Refresh ppc64_defconfig and enable pasemi-related options [POWERPC] pasemi: Update defconfig [POWERPC] iSeries: Fix ref counting in vio setup [POWERPC] ] Fix memset size error [POWERPC] Fix link errors for allyesconfig [POWERPC] iSeries_init_IRQ non-PCI tidy [POWERPC] Change fallocate to match unistd.h on powerpc [POWERPC] EEH: Avoid crash on null device [POWERPC] EEH: Drivers that need reset trump others [POWERPC] EEH: Clean up comments [POWERPC] Fix off-by-one error in setting decrementer on Book E/4xx (v2) [POWERPC] Fix switch_slb handling of 1T ESID values [POWERPC] Fix build failure when CONFIG_VIRT_CPU_ACCOUNTING is not defined [POWERPC] Include udbg.h when using udbg_printf [POWERPC] Fix cache line vs. block size confusion [POWERPC] Fix sysctl table check failure on PowerMac ...
| * Merge branch 'for-2.6.24' of ↵Paul Mackerras2007-11-07
| |\ | | | | | | | | | master.kernel.org:/pub/scm/linux/kernel/git/jwboyer/powerpc-4xx into merge
| | * [POWERPC] 4xx: Deal with 44x virtually tagged icacheBenjamin Herrenschmidt2007-11-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The 44x family has an interesting "feature" which is a virtually tagged instruction cache (yuck !). So far, we haven't dealt with it properly, which means we've been mostly lucky or people didn't report the problems, unless people have been running custom patches in their distro... This is an attempt at fixing it properly. I chose to do it by setting a global flag whenever we change a PTE that was previously marked executable, and flush the entire instruction cache upon return to user space when that happens. This is a bit heavy handed, but it's hard to do more fine grained flushes as the icbi instruction, on those processor, for some very strange reasons (since the cache is virtually mapped) still requires a valid TLB entry for reading in the target address space, which isn't something I want to deal with. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
| | * [POWERPC] 4xx: Fix 4xx flush_tlb_page()Benjamin Herrenschmidt2007-11-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On 4xx CPUs, the current implementation of flush_tlb_page() uses a low level _tlbie() assembly function that only works for the current PID. Thus, invalidations caused by, for example, a COW fault triggered by get_user_pages() from a different context will not work properly, causing among other things, gdb breakpoints to fail. This patch adds a "pid" argument to _tlbie() on 4xx processors, and uses it to flush entries in the right context. FSL BookE also gets the argument but it seems they don't need it (their tlbivax form ignores the PID when invalidating according to the document I have). Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Acked-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Josh Boyer <jwboyer@linux.vnet.ibm.com>
| * | [POWERPC] Change fallocate to match unistd.h on powerpcPatrick Mansfield2007-11-07
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fix the fallocate system call on powerpc to match its unistd.h. This implies none of these system calls are currently working with the unistd.h sys call values: fallocate signalfd timerfd eventfd sync_file_range2 Signed-off-by: Patrick Mansfield <patmans@us.ibm.com> Acked-by: Anton Blanchard <anton@samba.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * | [POWERPC] Fix off-by-one error in setting decrementer on Book E/4xx (v2)Paul Mackerras2007-11-07
| |/ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The decrementer in Book E and 4xx processors interrupts on the transition from 1 to 0, rather than on the 0 to -1 transition as on 64-bit server and 32-bit "classic" (6xx/7xx/7xxx) processors. At the moment we subtract 1 from the count of how many decrementer ticks are required before the next interrupt before putting it into the decrementer, which is correct for server/classic processors, but could possibly cause the interrupt to happen too early on Book E and 4xx if the timebase/decrementer frequency is low. This fixes the problem by making set_dec subtract 1 from the count for server and classic processors, instead of having the callers subtract 1. Since set_dec already had a bunch of ifdefs to handle different processor types, there is no net increase in ugliness. :) Note that calling set_dec(0) may not generate an interrupt on some processors. To make sure that decrementer_set_next_event always calls set_dec with an interval of at least 1 tick, we set min_delta_ns of the decrementer_clockevent to correspond to 2 ticks (2 rather than 1 to compensate for truncations in the conversions between ticks and ns). This also removes a redundant call to set the decrementer to 0x7fffffff - it was already set to that earlier in timer_interrupt. Signed-off-by: Paul Mackerras <paulus@samba.org>
* / cpm_load_patch() - declartion conflictKamalesh Babulal2007-11-05
|/ | | | | | | | | Commit f2a0bd3753dad7ea4605ebd5435716b39e9f92bb defines the function with "void cpm_load_patch(cpm8xx_t *cp)" prtotype and is declared as "extern void cpm_load_patch(volatile immap_t *immr)" in the header file. Signed-off-by: Kamalesh Babulal <kamalesh@linux.vnet.ibm.com> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* powerpc: Fix fallout from sg_page() changesOlof Johansson2007-10-23
| | | | | | | | | | | | | | | | | | | | | Fix fallout from 18dabf473e15850c0dbc8ff13ac1e2806d542c15: In file included from include/linux/dma-mapping.h:52, from drivers/base/dma-mapping.c:10: include/asm/dma-mapping.h: In function 'dma_map_sg': include/asm/dma-mapping.h:288: error: 'struct scatterlist' has no member named 'page' include/asm/dma-mapping.h:288: error: 'struct scatterlist' has no member named 'page' include/asm/dma-mapping.h:288: error: 'struct scatterlist' has no member named 'page' include/asm/dma-mapping.h:289: error: 'struct scatterlist' has no member named 'page' include/asm/dma-mapping.h:290: error: 'struct scatterlist' has no member named 'page' include/asm/dma-mapping.h: In function 'dma_sync_sg_for_cpu': include/asm/dma-mapping.h:331: error: 'struct scatterlist' has no member named 'page' drivers/scsi/ps3rom.c: In function 'fetch_to_dev_buffer': drivers/scsi/ps3rom.c:150: error: 'struct scatterlist' has no member named 'page' Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* Merge branch 'master' of ↵Linus Torvalds2007-10-22
|\ | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: [POWERPC] Enable restart support for lite5200 board [POWERPC] Add restart support for mpc52xx based platforms [POWERPC] Update device tree binding for mpc5200 gpt [POWERPC] Add mpc52xx_find_and_map_path(), refactor utility functions [POWERPC] bestcomm: Restrict bus prefetch bugfix to original mpc5200 silicon.
| * [POWERPC] Add restart support for mpc52xx based platformsMarian Balakowicz2007-10-21
| | | | | | | | | | | | | | | | Add common helper routines: mpc52xx_map_wdt() and mpc52xx_restart(). Signed-off-by: Marian Balakowicz <m8@semihalf.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * [POWERPC] Add mpc52xx_find_and_map_path(), refactor utility functionsMarian Balakowicz2007-10-21
| | | | | | | | | | | | | | | | Add helper routine mpc52xx_find_and_map_path(). Extract common code to mpc52xx_map_node() and refactor mpc52xx_find_and_map(). Signed-off-by: Jan Wrobel <wrr@semihalf.com> Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
| * [POWERPC] bestcomm: Restrict bus prefetch bugfix to original mpc5200 silicon.Grant Likely2007-10-21
| | | | | | | | | | | | Only the MPC5200 needs this bug fix. MPC5200B is okay. Signed-off-by: Grant Likely <grant.likely@secretlab.ca>
* | Add CONFIG_DEBUG_SG sg validationJens Axboe2007-10-22
| | | | | | | | | | | | | | Add a Kconfig entry which will toggle some sanity checks on the sg entry and tables. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* | Change table chaining layoutJens Axboe2007-10-22
|/ | | | | | | | | | | | | | | | | Change the page member of the scatterlist structure to be an unsigned long, and encode more stuff in the lower bits: - Bits 0 and 1 zero: this is a normal sg entry. Next sg entry is located at sg + 1. - Bit 0 set: this is a chain entry, the next real entry is at ->page_link with the two low bits masked off. - Bit 1 set: this is the final entry in the sg entry. sg_next() will return NULL when passed such an entry. It's thus important that sg table users use the proper accessors to get and set the page member. Signed-off-by: Jens Axboe <jens.axboe@oracle.com>
* Merge git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivialLinus Torvalds2007-10-19
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * git://git.kernel.org/pub/scm/linux/kernel/git/bunk/trivial: (74 commits) fix do_sys_open() prototype sysfs: trivial: fix sysfs_create_file kerneldoc spelling mistake Documentation: Fix typo in SubmitChecklist. Typo: depricated -> deprecated Add missing profile=kvm option to Documentation/kernel-parameters.txt fix typo about TBI in e1000 comment proc.txt: Add /proc/stat field small documentation fixes Fix compiler warning in smount example program from sharedsubtree.txt docs/sysfs: add missing word to sysfs attribute explanation documentation/ext3: grammar fixes Documentation/java.txt: typo and grammar fixes Documentation/filesystems/vfs.txt: typo fix include/asm-*/system.h: remove unused set_rmb(), set_wmb() macros trivial copy_data_pages() tidy up Fix typo in arch/x86/kernel/tsc_32.c file link fix for Pegasus USB net driver help remove unused return within void return function Typo fixes retrun -> return x86 hpet.h: remove broken links ...
| * powerpc: Remove obsolete prototypeJulio M. Merino Vidal2007-10-19
| | | | | | | | | | | | | | | | | | | | The include/asm-powerpc/paca.h file has a prototype for a function that does not exist any more; its name is setup_boot_paca. This function was removed in commit 4ba99b97dadd35b9ce1438b2bc7c992a4a14a8b1, so its prototype should have been removed at that time too. Signed-off-by: Julio M. Merino Vidal <jmerino@ac.upc.edu> Signed-off-by: Adrian Bunk <bunk@kernel.org>
| * Spelling fix: explicitlyJean Delvare2007-10-19
| | | | | | | | | | | | | | From: Jean Delvare <khali@linux-fr.org> Signed-off-by: Jean Delvare <khali@linux-fr.org> Signed-off-by: Adrian Bunk <bunk@kernel.org>
* | ide: add hwif->ack_intr hookBartlomiej Zolnierkiewicz2007-10-19
| | | | | | | | | | | | | | | | | | | | | | * Add hwif->ack_intr hook and use it instead of hwif->hw.ack_intr. * Add missing brackets to cris-v32 and powerpc ide_ack_intr() macros. Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* | ide: add CONFIG_IDE_ARCH_OBSOLETE_INITBartlomiej Zolnierkiewicz2007-10-19
|/ | | | | | | Add CONFIG_IDE_ARCH_OBSOLETE_INIT to drivers/ide/Kconfig and use it instead of defining IDE_ARCH_OBSOLETE_INIT in <arch/ide.h>. Signed-off-by: Bartlomiej Zolnierkiewicz <bzolnier@gmail.com>
* forbid asm/bitops.h direct inclusionJiri Slaby2007-10-19
| | | | | | | | | | | | | forbid asm/bitops.h direct inclusion Because of compile errors that may occur after bit changes if asm/bitops.h is included directly without e.g. linux/kernel.h which includes linux/bitops.h, forbid direct inclusion of asm/bitops.h. Thanks to Adrian Bunk. Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Cc: Adrian Bunk <bunk@kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* remove asm/bitops.h includesJiri Slaby2007-10-19
| | | | | | | | | | | | | remove asm/bitops.h includes including asm/bitops directly may cause compile errors. don't include it and include linux/bitops instead. next patch will deny including asm header directly. Cc: Adrian Bunk <bunk@kernel.org> Signed-off-by: Jiri Slaby <jirislaby@gmail.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* remove unused flush_tlb_pgtablesBenjamin Herrenschmidt2007-10-19
| | | | | | | | | | Nobody uses flush_tlb_pgtables anymore, this patch removes all remaining traces of it from all archs. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* powerpc: lock bitopsNick Piggin2007-10-18
| | | | | | | | | | Add non-trivial lock bitops implementation for powerpc. Signed-off-by: Nick Piggin <npiggin@suse.de> Acked-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* bitops: introduce lock opsNick Piggin2007-10-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Introduce test_and_set_bit_lock / clear_bit_unlock bitops with lock semantics. Convert all architectures to use the generic implementation. Signed-off-by: Nick Piggin <npiggin@suse.de> Acked-By: David Howells <dhowells@redhat.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: Russell King <rmk@arm.linux.org.uk> Cc: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: Bryan Wu <bryan.wu@analog.com> Cc: Mikael Starvik <starvik@axis.com> Cc: David Howells <dhowells@redhat.com> Cc: Yoshinori Sato <ysato@users.sourceforge.jp> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Hirokazu Takata <takata@linux-m32r.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Cc: Roman Zippel <zippel@linux-m68k.org> Cc: Greg Ungerer <gerg@uclinux.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Matthew Wilcox <willy@debian.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Martin Schwidefsky <schwidefsky@de.ibm.com> Cc: Paul Mundt <lethal@linux-sh.org> Cc: Kazumoto Kojima <kkojima@rr.iij4u.or.jp> Cc: Richard Curnow <rc@rc0.org.uk> Cc: William Lee Irwin III <wli@holomorphy.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Miles Bader <uclinux-v850@lsi.nec.co.jp> Cc: Andi Kleen <ak@muc.de> Cc: Chris Zankel <chris@zankel.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* powerpc: add scaled time accountingMichael Neuling2007-10-18
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This adds POWERPC specific hooks for scaled time accounting. POWER6 includes a SPURR register. The SPURR is based off the PURR register but is scaled based on CPU frequency and issue rates. This gives a more accurate account of the instructions used per task. The PURR and timebase will be constant relative to the wall clock, irrespective of the CPU frequency. This implementation reads the SPURR register in account_system_vtime which is only call called on context witch and hard and soft irq entry and exit. The percentage of user and system time is then estimated using the ratio of these accounted by the PURR. If the SPURR is not present, the PURR read. An earlier implementation of this patch read the SPURR whenever the PURR was read, which included the system call entry and exit path. Unfortunately this showed a performance regression on lmbench runs, so was re-implemented. I've included the lmbench results here when run bare metal on POWER6. 1st column is the unpatch results. 2nd column is the results using the below patch and the 3rd is the % diff of these results from the base. 4th and 5th columns are the results and % differnce from the base using the older patch (SPURR read in syscall entry/exit path). Base Scaled-Acct SPURR-in-syscall Result Result % diff Result % diff Simple syscall: 0.3086 0.3086 0.0000 0.3452 11.8600 Simple read: 0.4591 0.4671 1.7425 0.5044 9.86713 Simple write: 0.4364 0.4366 0.0458 0.4731 8.40971 Simple stat: 2.0055 2.0295 1.1967 2.0669 3.06158 Simple fstat: 0.5962 0.5876 -1.442 0.6368 6.80979 Simple open/close: 3.1283 3.1009 -0.875 3.2088 2.57328 Select on 10 fd's: 0.8554 0.8457 -1.133 0.8667 1.32101 Select on 100 fd's: 3.5292 3.6329 2.9383 3.6664 3.88756 Select on 250 fd's: 7.9097 8.1881 3.5197 8.2242 3.97613 Select on 500 fd's: 15.2659 15.836 3.7357 15.873 3.97814 Select on 10 tcp fd's: 0.9576 0.9416 -1.670 0.9752 1.83792 Select on 100 tcp fd's: 7.248 7.2254 -0.311 7.2685 0.28283 Select on 250 tcp fd's: 17.7742 17.707 -0.375 17.749 -0.1406 Select on 500 tcp fd's: 35.4258 35.25 -0.496 35.286 -0.3929 Signal handler installation: 0.6131 0.6075 -0.913 0.647 5.52927 Signal handler overhead: 2.0919 2.1078 0.7600 2.1831 4.35967 Protection fault: 0.7345 0.7478 1.8107 0.8031 9.33968 Pipe latency: 33.006 16.398 -50.31 33.475 1.42368 AF_UNIX sock stream latency: 14.5093 30.910 113.03 30.715 111.692 Process fork+exit: 219.8 222.8 1.3648 229.37 4.35623 Process fork+execve: 876.14 873.28 -0.32 868.66 -0.8533 Process fork+/bin/sh -c: 2830 2876.5 1.6431 2958 4.52296 File /var/tmp/XXX write bw: 1193497 1195536 0.1708 118657 -0.5799 Pagefaults on /var/tmp/XXX: 3.1272 3.2117 2.7020 3.2521 3.99398 Also, kernel compile times show no difference with this patch applied. [pbadari@us.ibm.com: Avoid unnecessary PURR reading] Signed-off-by: Michael Neuling <mikey@neuling.org> Cc: Balbir Singh <balbir@in.ibm.com> Cc: Jay Lan <jlan@engr.sgi.com> Cc: Paul Mackerras <paulus@samba.org> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Badari Pulavarty <pbadari@us.ibm.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* PM: Rework struct platform_suspend_opsRafael J. Wysocki2007-10-18
| | | | | | | | | | | | | | | | | There is no reason why the .prepare() and .finish() methods in 'struct platform_suspend_ops' should take any arguments, since architectures don't use these methods' argument in any practically meaningful way (ie. either the target system sleep state is conveyed to the platform by .set_target(), or there is only one suspend state supported and it is indicated to the PM core by .valid(), or .prepare() and .finish() aren't defined at all).  There also is no reason why .finish() should return any result. Signed-off-by: Rafael J. Wysocki <rjw@sisk.pl> Acked-by: Pavel Machek <pavel@ucw.cz> Cc: Len Brown <lenb@kernel.org> Cc: Greg KH <greg@kroah.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* Merge branch 'merge' of ↵Linus Torvalds2007-10-17
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc * 'merge' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/powerpc: (24 commits) [POWERPC] Fix vmemmap warning in init_64.c [POWERPC] Fix 64 bits vDSO DWARF info for CR register [POWERPC] Add 1TB workaround for PA6T [POWERPC] Enable NO_HZ and high res timers for pseries and ppc64 configs [POWERPC] Quieten cache information at boot [POWERPC] Quieten clockevent printk [POWERPC] Enable SLUB in *_defconfig [POWERPC] Fix 1TB segment detection [POWERPC] Fix iSeries_hpte_insert prototype [POWERPC] Fix copyright symbol [POWERPC] ibmebus: Move to of_device and of_platform_driver, match eHCA and eHEA drivers [POWERPC] ibmebus: Add device creation and bus probing based on of_device [POWERPC] ibmebus: Remove bus match/probe/remove functions [POWERPC] Move of_device allocation into of_device.[ch] [POWERPC] mpc52xx: device tree changes for FEC and MDIO [POWERPC] bestcomm: GenBD task support [POWERPC] bestcomm: FEC task support [POWERPC] bestcomm: ATA task support [POWERPC] bestcomm: core bestcomm support for Freescale MPC5200 [POWERPC] mpc52xx: Update mpc52xx_psc structure with B revision changes ...
| * [POWERPC] Add 1TB workaround for PA6TOlof Johansson2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | PA6T has a bug where the slbie instruction does not honor the large segment bit. As a result, we have to always use slbia when switching context. We don't have to worry about changing the slbie's during fault processing, since they should never be replacing one VSID with another using the same ESID. I.e. there's no risk for inserting duplicate entries due to a failed slbie of the old entry. So as long as we clear it out on context switch we should be fine. Signed-off-by: Olof Johansson <olof@lixom.net> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] ibmebus: Move to of_device and of_platform_driver, match eHCA and ↵Joachim Fenkes2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | eHEA drivers Replace struct ibmebus_dev and struct ibmebus_driver with struct of_device and struct of_platform_driver, respectively. Match the external ibmebus interface and drivers using it. Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Acked-by: Roland Dreier <rolandd@cisco.com> Acked-by: Jeff Garzik <jeff@garzik.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
| * [POWERPC] Move of_device allocation into of_device.[ch]Joachim Fenkes2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | Extract generic of_device allocation code from of_platform_device_create() and move it into of_device.[ch], called of_device_alloc(). Also, there's now of_device_free() which puts the device node. This way, bus drivers that build on of_platform (like ibmebus will) can build upon this code instead of reinventing the wheel. Signed-off-by: Joachim Fenkes <fenkes@de.ibm.com> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | increase AT_VECTOR_SIZE to terminate saved_auxv properlyOlaf Hering2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | include/asm-powerpc/elf.h has 6 entries in ARCH_DLINFO. fs/binfmt_elf.c has 14 unconditional NEW_AUX_ENT entries and 2 conditional NEW_AUX_ENT entries. So in the worst case, saved_auxv does not get an AT_NULL entry at the end. The saved_auxv array must be terminated with an AT_NULL entry. Make the size of mm_struct->saved_auxv arch dependend, based on the number of ARCH_DLINFO entries. Signed-off-by: Olaf Hering <olh@suse.de> Cc: Roland McGrath <roland@redhat.com> Cc: Jakub Jelinek <jakub@redhat.com> Cc: Richard Henderson <rth@twiddle.net> Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru> Cc: "Luck, Tony" <tony.luck@intel.com> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Paul Mundt <lethal@linux-sh.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | Remove dma_cache_(wback|inv|wback_inv) functionsRalf Baechle2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | dma_cache_(wback|inv|wback_inv) were the earliest attempt on a generalized cache managment API for I/O purposes. Originally it was basically the raw MIPS low level cache API exported to the entire world. The API has suffered from a lack of documentation, was not very widely used unlike it's more modern brothers and can easily be replaced by dma_cache_sync. So remove it rsp. turn the surviving bits back into an arch private API, as discussed on linux-arch. Signed-off-by: Ralf Baechle <ralf@linux-mips.org> Acked-by: Paul Mundt <lethal@linux-sh.org> Acked-by: Paul Mackerras <paulus@samba.org> Acked-by: David S. Miller <davem@davemloft.net> Acked-by: Kyle McMartin <kyle@parisc-linux.org> Acked-by: Haavard Skinnemoen <hskinnemoen@atmel.com> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | remove include/asm-*/ipc.hAdrian Bunk2007-10-17
| | | | | | | | | | | | | | | | | | | | | | | | All asm/ipc.h files do only #include <asm-generic/ipc.h>. This patch therefore removes all include/asm-*/ipc.h files and moves the contents of include/asm-generic/ipc.h to include/linux/ipc.h. Signed-off-by: Adrian Bunk <bunk@kernel.org> Cc: <linux-arch@vger.kernel.org> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* | cleanup floppy.hJan Beulich2007-10-17
| | | | | | | | | | | | | | | | | | AUTO_DMA and FLOPPY_MOTOR_MASK in include/asm-*/floppy.h are dead symbols - remove them. Signed-off-by: Jan Beulich <jbeulich@novell.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
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