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* Merge ../linux-2.6Paul Mackerras2005-11-01
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| * Revert "i386: move apic init in init_IRQs"Linus Torvalds2005-10-31
| | | | | | | | | | | | | | | | Commit f2b36db692b7ff6972320ad9839ae656a3b0ee3e causes a bootup hang on at least one machine. Revert for now until we understand why. The old code may be ugly, but it works. Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * [PATCH] i386: CONFIG_PC removalArthur Othieno2005-10-31
| | | | | | | | | | | | | | | | | | CONFIG_PC is left-over cruft after the introduction of CONFIG_X86_PC with the subarch split. Remove it, and fixup the remaining users to depend on CONFIG_X86_PC instead. Signed-off-by: Arthur Othieno <a.othieno@bluewin.ch> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * Merge master.kernel.org:/home/rmk/linux-2.6-drvmodelLinus Torvalds2005-10-31
| |\ | | | | | | | | | Manual #include fixups for clashes - there may be some unnecessary
| | * Create platform_device.h to contain all the platform device details.Russell King2005-10-29
| | | | | | | | | | | | | | | | | | | | | | | | Convert everyone who uses platform_bus_type to include linux/platform_device.h. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk> Acked-by: Greg Kroah-Hartman <gregkh@suse.de>
* | | powerpc: clean up bug.h furtherPaul Mackerras2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | This simplifies the macros which are different between 32-bit and 64-bit. It also fixes a couple of printks on the bug->line element, which is now a long. Signed-off-by: Paul Mackerras <paulus@samba.org>
* | | powerpc: exclude powerbook sleep code with CONFIG_PPC64 and CONFIG_PMPaul Mackerras2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | We were getting powerbook sleep code included, and giving compile errors, with CONFIG_PM=y on a 64-bit build. This excludes that code so the kernel will compile. One day BenH will implement on sleep on the G5... Signed-off-by: Paul Mackerras <paulus@samba.org>
* | | powerpc: Fix compile error with CONFIG_TAU=yPaul Mackerras2005-11-01
| | | | | | | | | | | | | | | | | | | | | A couple of instances of "i" that needed to be changed to "cpu_id" got missed in the merge, because they were in CONFIG_TAU code. Signed-off-by: Paul Mackerras <paulus@samba.org>
* | | powerpc: Use rtas_call not call_rtas in CHRP codePaul Mackerras2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | The nvram driver imported from the ppc code uses call_rtas, but rtas_call is the name we are using in merged code (since ppc64 used that name, and it uses far more RTAS calls than ppc32). Signed-off-by: Paul Mackerras <paulus@samba.org>
* | | powerpc: Fix pseries (64-bit) buildPaul Mackerras2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | A recent commit that removed rtas-fw.h and moved its contents to include/asm-powerpc/rtas.h forgot to also remove the inclusion of it in arch/powerpc/platforms/pseries/setup.c. Signed-off-by: Paul Mackerras <paulus@samba.org>
* | | [PATCH] powerpc: Merge bitops.hDavid Gibson2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Here's a revised version. This re-introduces the set_bits() function from ppc64, which I removed because I thought it was unused (it exists on no other arch). In fact it is used in the powermac interrupt code (but not on pSeries). - We use LARXL/STCXL macros to generate the right (32 or 64 bit) instructions, similar to LDL/STL from ppc_asm.h, used in fpu.S - ppc32 previously used a full "sync" barrier at the end of test_and_*_bit(), whereas ppc64 used an "isync". The merged version uses "isync", since I believe that's sufficient. - The ppc64 versions of then minix_*() bitmap functions have changed semantics. Previously on ppc64, these functions were big-endian (that is bit 0 was the LSB in the first 64-bit, big-endian word). On ppc32 (and x86, for that matter, they were little-endian. As far as I can tell, the big-endian usage was simply wrong - I guess no-one ever tried to use minixfs on ppc64. - On ppc32 find_next_bit() and find_next_zero_bit() are no longer inline (they were already out-of-line on ppc64). - For ppc64, sched_find_first_bit() has moved from mmu_context.h to the merged bitops. What it was doing in mmu_context.h in the first place, I have no idea. - The fls() function is now implemented using the cntlzw instruction on ppc64, instead of generic_fls(), as it already was on ppc32. - For ARCH=ppc, this patch requires adding arch/powerpc/lib to the arch/ppc/Makefile. This in turn requires some changes to arch/powerpc/lib/Makefile which didn't correctly handle ARCH=ppc. Built and running on G5. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | | [PATCH] powerpc: move arch/ppc64/kernel/bpa* to arch/powerpc/platforms/cellArnd Bergmann2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | This patch simply moves files over to arch/powerpc without making any changes to them. Signed-off-by: Arnd Bergmann <arndb@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | | [PATCH] powerpc: move mmio_nvram.c over to arch/powerpcArnd Bergmann2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The nvram code formally known as bpa_nvram.c is rather generic really, so it is quite likely to be useful to future boards not based on cell. This patch puts it into arch/powerpc/sysdev. Signed-off-by: Arnd Bergmann <arndb@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | | [PATCH] powerpc: move rtas_fw.c out of platforms/pseriesArnd Bergmann2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Cell uses the same code as pSeries for flashing the firmware through rtas, so the implementation should not be part of platforms/pseries. Put it into arch/powerpc/kernel instead. Signed-off-by: Arnd Bergmann <arndb@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | | [PATCH] powerpc: create a new arch/powerpc/platforms/cell/smp.cArnd Bergmann2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | During the conversion to the merge tree, the Cell specific SMP initialization was removed from the pSeries code. This creates a new Cell specific SMP implementation file. Signed-off-by: Arnd Bergmann <arndb@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | | [PATCH] powerpc: Rename BPA to CellArnd Bergmann2005-11-01
| | | | | | | | | | | | | | | | | | | | | | | | | | | The official name for BPA is now CBEA (Cell Broadband Engine Architecture). This patch renames all occurences of the term BPA to 'Cell' for easier recognition. Signed-off-by: Arnd Bergmann <arndb@de.ibm.com> Signed-off-by: Paul Mackerras <paulus@samba.org>
* | | powerpc: make mem= work on iSeries againStephen Rothwell2005-10-31
| | | | | | | | | | | | | | | | | | | | | | | | By parsing the command line earlier, we can add the mem= value to the flattened device tree and let the generic code sort out the memory limit for us. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
* | | powerpc: fix __strnlen_user in merge treeStephen Rothwell2005-10-31
|/ / | | | | | | | | | | | | | | Change USER/KERNEL_DS so that the merged version of __strnlen_user can be used which allows us to complete the removal of arch/ppc64/lib/. Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
* | powerpc: import a fix from arch/ppc/mm/pgtable.cPaul Mackerras2005-10-30
| | | | | | | | | | | | ... namely, the change to the 2-argument pte_alloc_kernel. Signed-off-by: Paul Mackerras <paulus@samba.org>
* | powerpc: apply recent changes to merged codePaul Mackerras2005-10-30
| | | | | | | | Signed-off-by: Paul Mackerras <paulus@samba.org>
* | Merge ../linux-2.6 by handPaul Mackerras2005-10-30
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| * \ Merge master.kernel.org:/home/rmk/linux-2.6-armLinus Torvalds2005-10-30
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| | * | [ARM] fix ixp2x00 defconfig NR_UARTS optionsDeepak Saxena2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | IXDP2[48]00 have only 1 UART on the board. Signed-off-by: Deepak Saxena <dsaxena@plexity.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * | [ARM] 3049/1: More optimized libgcc functionsNicolas Pitre2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Nicolas Pitre This patch gets rid of the last C implementations of needed libgcc functions for the kernel, replacing them with optimized assembly versions. Those functions are: __ashldi3 __ashrdi3 __lshrdi3 __muldi3 __ucmpdi2 The first 3 were lifted from gcc, the other two were written from scratch. Signed-off-by: Nicolas Pitre <nico@cam.org> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * | [ARM] Clean up dmabounceRussell King2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Encapsulate pool data into dmabounce_pool. Only account successful allocations. Use dma_mapping_error(). Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * | [ARM] Make v6 copypage function static and cleanup pgprotsRussell King2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | We know what pgprot we're going to use, so don't #define it. Also, since we select the nonaliasing/aliasing copypage implementation at run time, there's no point having it globally visible. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * | [ARM] Re-organise die()Russell King2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Provide __die() which can be called from various contexts to provide an oops report. Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * | [ARM] 3069/1: Add spitz irda platform supportRichard Purdie2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Richard Purdie Add spitz irda platform support Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * | [ARM] 3068/1: Add corgi irda platform supportRichard Purdie2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Richard Purdie Add corgi irda platform support Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| | * | [ARM] 3067/1: Add poodle irda platform supportRichard Purdie2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Patch from Richard Purdie Add poodle irda platform support Signed-off-by: Richard Purdie <rpurdie@rpsys.net> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
| * | | [PATCH] fix missing includesTim Schmielau2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I recently picked up my older work to remove unnecessary #includes of sched.h, starting from a patch by Dave Jones to not include sched.h from module.h. This reduces the number of indirect includes of sched.h by ~300. Another ~400 pointless direct includes can be removed after this disentangling (patch to follow later). However, quite a few indirect includes need to be fixed up for this. In order to feed the patches through -mm with as little disturbance as possible, I've split out the fixes I accumulated up to now (complete for i386 and x86_64, more archs to follow later) and post them before the real patch. This way this large part of the patch is kept simple with only adding #includes, and all hunks are independent of each other. So if any hunk rejects or gets in the way of other patches, just drop it. My scripts will pick it up again in the next round. Signed-off-by: Tim Schmielau <tim@physik3.uni-rostock.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | | [PATCH] hpet-RTC: cache the comparator registerClemens Ladisch2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Reads from an HPET register require a round trip to the south bridge and are almost as slow as PCI reads. By caching the last value we've written to the comparator register, we can eliminate all HPET reads from the fast path in the emulated RTC interrupt handler. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | | [PATCH] hpet-RTC: fix timer config register accessesClemens Ladisch2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make sure that the RTC timer is in non-periodic mode; some stupid BIOS might have initialized it to periodic mode. Furthermore, don't set the SETVAL bit in the config register. This wouldn't have any effect unless the timer was in period mode (which it isn't), and then the actual timer frequency would be half that of the desired one because incrementing the comparator in the interrupt handler would be done after the hardware has already incremented it itself. Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | | [PATCH] hpet-RTC: disable interrupt when no longer neededClemens Ladisch2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | When the emulated RTC interrupt is no longer needed, we better disable it; otherwise, we get a spurious interrupt whenever the timer has rolled over and reaches the same comparator value. Having a superfluous interrupt every five minutes doesn't hurt much, but it's bad style anyway. ;-) Signed-off-by: Clemens Ladisch <clemens@ladisch.de> Acked-by: "Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com> Cc: Andi Kleen <ak@muc.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | | [PATCH] sparse cleanups: NULL pointers, C99 struct init.Randy Dunlap2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Convert most of the remaining "Using plain integer as NULL pointer" sparse warnings to use NULL. (Not duplicating patches that are already in -mm, -bird, or -kj.) Convert isdn driver struct initializer to use C99 syntax. Signed-off-by: Randy Dunlap <rdunlap@xenotime.net> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | | [PATCH] jiffies_64 cleanupThomas Gleixner2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Define jiffies_64 in kernel/timer.c rather than having 24 duplicated defines in each architecture. Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | | [PATCH] Remove orphaned TIOCGDEV compat ioctlBrian Gerst2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This ioctl doesn't exist for native i386. Signed-off-by: Brian Gerst <bgerst@didntduck.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | | [PATCH] unify sys_ptrace prototypeChristoph Hellwig2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make sure we always return, as all syscalls should. Also move the common prototype to <linux/syscalls.h> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Miklos Szeredi <miklos@szeredi.hu> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | | [PATCH] adjust parisc sys_ptrace prototypeChristoph Hellwig2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make the pid argument a long as on every other arcihtecture. Despite pid_t beeing a 32bit type even on 64bit parisc this is not an ABI change due to the parisc calling conventions. And even if it did it wouldn't matter too much because 64bit userspace on parisc is in an embrionic stage. Acked-by: Matthew Wilcox <matthew@wil.cx> Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | | [PATCH] Don't uselessly export task_struct to userspace in core dumpsEric W. Biederman2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | task_struct is an internal structure to the kernel with a lot of good information, that is probably interesting in core dumps. However there is no way for user space to know what format that information is in making it useless. I grepped the GDB 6.3 source code and NT_TASKSTRUCT while defined is not used anywhere else. So I would be surprised if anyone notices it is missing. In addition exporting kernel pointers to all the interesting kernel data structures sounds like the very definition of an information leak. I haven't a clue what someone with evil intentions could do with that information, but in any attack against the kernel it looks like this is the perfect tool for aiming that attack. So since NT_TASKSTRUCT is useless as currently defined and is potentially dangerous, let's just not export it. (akpm: Daniel Jacobowitz <dan@debian.org> "would be amazed" if anything was using NT_TASKSTRUCT). Signed-off-by: Eric W. Biederman <ebiederm@xmission.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | | [PATCH] remove timer debug fieldAndrew Morton2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove timer_list.magic and associated debugging code. I originally added this when a spinlock was added to timer_list - this meant that an all-zeroes timer became illegal and init_timer() was required. That spinlock isn't even there any more, although timer.base must now be initialised. I'll keep this debugging code in -mm. Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | | [PATCH] remove some more check_region stuffJeff Garzik2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Removed some more references to check_region(). I checked these changes into the 'checkreg' branch of rsync://rsync.kernel.org/pub/scm/linux/kernel/git/jgarzik/misc-2.6.git The only valid references remaining are in: drivers/scsi/advansys.c drivers/scsi/BusLogic.c drivers/cdrom/sbpcd.c sound/oss/pss.c Remove last vestiges of ide_check_region() drivers/char/specialix: trim trailing whitespace drivers/char/specialix: eliminate use of check_region() Remove outdated and unused references to check_region() [sound oss] remove check_region() usage from cs4232, wavfront [netdrvr eepro] trim trailing whitespace [netdrvr eepro] remove check_region() usage Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | | [PATCH] TIOC* compat ioctl handlingChristoph Hellwig2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | TIOCSTART and TIOCSTOP are defined in asm/ioctls.h and asm/termios.h by various architectures but not actually implemented anywhere but in the IRIX compatibility layer, so remove their COMPATIBLE_IOCTL from parisc, ppc64 and sparc64. Move the TIOCSLTC COMPATIBLE_IOCTL to common code, guided by an ifdef to only show up on architectures that support it (same as the code handling it in tty_ioctl.c), aswell as it's brother TIOCGLTC that wasn't handled so far. Signed-off-by: Christoph Hellwig <hch@lst.de> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | | [PATCH] introduce setup_timer() helperOleg Nesterov2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Every user of init_timer() also needs to initialize ->function and ->data fields. This patch adds a simple setup_timer() helper for that. The schedule_timeout() is patched as an example of usage. Signed-off-by: Oleg Nesterov <oleg@tv-sign.ru> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | | [PATCH] s390: export ipl device parametersHeiko Carstens2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Sysfs interface to export ipl device parameters. Dependent on the ipl type the interface will look like this: - ccw ipl: /sys/firmware/ipl/device /ipl_type - fcp ipl: /sys/firmware/ipl/binary_parameter /bootprog /br_lba /device /ipl_type /lun /scp_data /wwpn - otherwise (unknown that is): /sys/firmware/ipl/ipl_type Acked-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Cc: Greg KH <greg@kroah.com> Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | | [PATCH] s390: 3270 fullscreen viewRichard Hitt2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Martin Schwidefsky <schwidefsky@de.ibm.com> Fix fullscreen view of the 3270 device driver. Signed-off-by: Richard Hitt <rbh00@utsglobal.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | | [PATCH] i386: use -mcpu, not -mtune, for GCCs older than 3.4Paolo 'Blaisorblade' Giarrusso2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | I just noted that -mtune is used, which is only supported on recent GCCs; by reading http://gcc.gnu.org/gcc-3.4/changes.html, you see "-mcpu has been renamed to -mtune.", so for GCC < 3.4 we're not using any specific tuning in the appropriate cases. However -mcpu is deprecated, so use -mtune when possible. This was introduced by commit e9d4dce954a60dc23dd1d967766ca2347b780e54 of the old tree (between 2.6.10-rc3 and 2.6.10) by Linus Torvalds, to remove the use of -march, since that could trigger gcc using SSE on its own. But no attention was used about using -mcpu vs. -mtune. And btw, the old 2.6.4 code (for instance) was: cflags-$(CONFIG_MPENTIUMII) += $(call check_gcc,-march=pentium2,-march=i686) cflags-$(CONFIG_MPENTIUMIII) += $(call check_gcc,-march=pentium3,-march=i686) cflags-$(CONFIG_MPENTIUMM) += $(call check_gcc,-march=pentium3,-march=i686) cflags-$(CONFIG_MPENTIUM4) += $(call check_gcc,-march=pentium4,-march=i686) Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | | [PATCH] uml: remove old UM_FASTCALL, and make the thing work againPaolo 'Blaisorblade' Giarrusso2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This was used in the old dark age of 2.4, ARCH_CFLAGS doesn't work any more since some time, and UM_FASTCALL was never used in 2.6. Instead, reintroduce the thing more properly now, directly in include/asm-um/linkage.h. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | | [PATCH] uml: fix "reuse i386 cpu optimizations"Paolo 'Blaisorblade' Giarrusso2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Remove RWSEM_GENERIC_SPINLOCK, it's now defined (only if needed) by the underlying arch/i386/Kconfig.cpu. Leave it only for x86_64. Even there, it's totally wrong, as they even have the code to support XCHG_ADD. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| * | | [PATCH] uml: reuse i386 cpu-specific tuningPaolo 'Blaisorblade' Giarrusso2005-10-30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Make UML share the underlying cpu-specific tuning done on i386. Actually, for now many config options aren't used a lot - but that can be done later. Also, UML relies on GCC optimization for things like memcpy and such more than i386, so specifying the correct -march and -mtune should be enough. Later, we may want to correct some other stuff. For instance, since FPU context switching, for us, is done (at least partially, i.e. between our kernelspace and userspace) by the host, we may allow usage of FPU operations by GCC. This doesn't hold for kernelspace vs. kernelspace, but we don't support preemption. Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
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