- Feb 12, 2006
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Heiko Carstens authored
Initiliazing of cpu_possible_map was done in smp_prepare_cpus which is way too late. Therefore assign a static value to cpu_possible_map, since we don't have access to max_cpus in setup_arch. 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>
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Peter Oberparleiter authored
When the sclp interface takes very long to serve a request, the sclp core driver will report a failed request to the sclp tty driver even though the request is still being processed by the sclp interface. Eventually the sclp interface completes the request and updates some fields in the request buffer which leads to a corrupted tty pages list. The next time function sclp_tty_write_room is called, the corrupted list will be traversed, resulting in an oops. To avoid this remove the busy retry limit and increase retry intervals. Signed-off-by:
Peter Oberparleiter <peter.oberparleiter@de.ibm.com> Signed-off-by:
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Heiko Carstens authored
Switch on CONFIG_DEBUG_FS again. Signed-off-by:
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Cornelia Huck authored
Fix locking in __chp_add() and s390_subchannel_remove_chpid(): Need to disable/enable because they are always called from a thread (and not directly from a machine check...) Signed-off-by:
Cornelia Huck <cornelia.huck@de.ibm.com> Signed-off-by:
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Ingo Molnar authored
Lost a few hours debugging an early-bootup fault within printk itself, which manifested itself as a hard to debug early hang. This patch makes it much easier by printing out early faults via early_printk(), which function is a lot simpler than a full printk, and hence more likely to succeed in emergencies. (We do not recover from early faults anyway, so there's no loss from not having these messages in the normal printk buffer.) Signed-off-by:
Ingo Molnar <mingo@elte.hu> Signed-off-by:
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Christoph Lameter authored
This puts the variables and the way to get to reclaim_mapped in one block. And allows zone_reclaim or other things to skip the determination (maybe this whole block of code does not belong into refill_inactive_zone()?) Signed-off-by:
Christoph Lameter <clameter@sgi.com> Signed-off-by:
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Christoph Lameter authored
shrink_zone() already increments reclaim_in_progress. No need to do it in balance_pgdat. Signed-off-by:
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Christoph Lameter authored
shrink_list() and refill_inactive() check all ptes pointing to a page for reference bits in order to decide if the page should be put on the active list. This is not necessary for zone_reclaim since we are only interested in removing unmapped pages. Skip the checks in both functions. Signed-off-by:
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Andrew Morton authored
With David Woodhouse <dwmw2@infradead.org> select() presently has a habit of increasing the value of the user's `timeout' argument on return. We were writing back a timeout larger than the original. We _deliberately_ round up, since we know we must wait at _least_ as long as the caller asks us to. The patch adds a couple of helper functions for magnitude comparison of timespecs and of timevals, and uses them to prevent the various poll and select functions from returning a timeout which is larger than the one which was passed in. The patch also fixes a bug in compat_sys_pselect7(): it was adding the new timeout value to the old one and was returning that. It should just return the new timeout value. (We have various handy timespec/timeval-to-from-nsec conversion functions in time.h. But this code open-codes it all). Cc: "David S. Miller" <davem@davemloft.net> Cc: Andi Kleen <ak@muc.de> Cc: Ulrich Drepper <drepper@redhat.com> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: george anzinger <george@mvista.com> Signed-off-by:
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Chris McDermott authored
[description from AK] The IBM Summit 3 chipset doesn't implement the HPET timer replacement option. Since the current Linux code relies on it use a mixed mode with both PIT for the interrupt and HPET counters for the time keeping. That was already implemented, but didn't work properly because it was still using the last interrupt offset in HPET. This resulted in x460 not booting. Fix this up by using the free running HPET counter. Shouldn't affect any other machine because they either use full HPET mode or no HPET at all. TBD needs a similar 32bit fix. Signed-off-by:
Andi Kleen <ak@suse.de> Cc: Pallipadi, Venkatesh" <venkatesh.pallipadi@intel.com> Cc: Bob Picco <bob.picco@hp.com> Cc: Bjorn Helgaas <bjorn.helgaas@hp.com> Cc: john stultz <johnstul@us.ibm.com> Signed-off-by:
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Matt Waddel authored
Acked-by:
Alan Cox <alan@redhat.com> Signed-off-by:
Matt Waddel <Matt.Waddel@freescale.com> Cc: Roman Zippel <zippel@linux-m68k.org> Signed-off-by:
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Ulrich Drepper authored
The *at patches introduced fstatat and, due to inusfficient research, I used the newfstat functions generally as the guideline. The result is that on 32-bit platforms we don't have all the information needed to implement fstatat64. This patch modifies the code to pass up 64-bit information if __ARCH_WANT_STAT64 is defined. I renamed the syscall entry point to make this clear. Other archs will continue to use the existing code. On x86-64 the compat code is implemented using a new sys32_ function. this is what is done for the other stat syscalls as well. This patch might break some other archs (those which define __ARCH_WANT_STAT64 and which already wired up the syscall). Yet others might need changes to accomodate the compatibility mode. I really don't want to do that work because all this stat handling is a mess (more so in glibc, but the kernel is also affected). It should be done by the arch maintainers. I'll provide some stand-alone test shortly. Those who are eager could compile glibc and run 'make check' (no installation needed). The patch below has been tested on x86 and x86-64. Signed-off-by:
Ulrich Drepper <drepper@redhat.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Andi Kleen <ak@muc.de> Signed-off-by:
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- Feb 10, 2006
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Linus Torvalds authored
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Linus Torvalds authored
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Ben Dooks authored
Patch from Ben Dooks Define the bits for the two board control latches that control various items on the H1940 iPAQ. Signed-off-by:
Ben Dooks <ben-linux@fluff.org> Signed-off-by:
Arnaud Patard <arnaud.patard@rtp-net.org> Signed-off-by:
Russell King <rmk+kernel@arm.linux.org.uk>
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Russell King authored
Serial drivers in general should not write uart_info->flags - they're private to serial_core. Serial drivers have no need to fiddle with tty->alt_speed, nor manipulate TTY_IO_ERROR in tty->flags. Fix the ioc4 serial driver for both these points by simply removing the offending code. Acked-by:
<pfg@sgi.com> Signed-off-by:
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Dave Jones authored
arch/s390/kernel/compat_signal.c:199: error: conflicting types for 'do_sigaction' include/linux/sched.h:1115: error: previous declaration of 'do_sigaction' was here Signed-off-by:
Dave Jones <davej@redhat.com> Signed-off-by:
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Christoph Lameter authored
This adds some additional comments in order to help others figure out how exactly the code works. And fix a variable name. Also swap_page does need to ignore all reference bits when unmapping a page. Otherwise we may have to repeatedly unmap a frequently touched page. So change the try_to_unmap parameter to 1. Signed-off-by:
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Paul Fulghum authored
Prevent stalled processing of received data when a driver allocates tty buffer space but does not immediately follow the allocation with more data and a call to schedule receive tty processing. (example: hvc_console) This bug was introduced by the first locking patch for the new tty buffering. Signed-off-by:
Paul Fulghum <paulkf@microgate.com> Cc: Alan Cox <alan@lxorguk.ukuu.org.uk> Signed-off-by:
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Ravikiran G Thirumalai authored
Prevents deadlock situation between kmem_cache_create()/kmem_cache_destory(), and kmem_cache_create() /cpu hotplug. The locking order probably got moved over time. Signed-off-by:
Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by:
Shai Fultheim <shai@scalex86.org> Signed-off-by:
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KAMEZAWA Hiroyuki authored
sys_shmdt() can manage shm segments which are covered by multiple vmas. (This can happen when a user uses mprotect() after shmat().) This works well if shm is aligned to PAGE_SIZE, but if not, the last segment cannot be detached. It is because a comparison in sys_shmdt() (vma->vm_end - addr) < size addr == return address of shmat() size == shmsize, argments to shmget() size should be aligned to PAGE_SIZE before being compared with vma->vm_end, which is aligned. Signed-off-by:
KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com> Cc: Manfred Spraul <manfred@colorfullife.com> Acked-by:
Hugh Dickins <hugh@veritas.com> Cc: <stable@kernel.org> Signed-off-by:
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Jan Beulich authored
When panic_timeout is zero, suppress triggering a nested panic due to soft lockup detection. Signed-off-by:
Jan Beulich <jbeulich@novell.com> Signed-off-by:
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Andrew Morton authored
Initialising cpu_possible_map to all-ones with CONFIG_HOTPLUG_CPU means that a) All for_each_cpu() loops will iterate across all NR_CPUS CPUs, rather than over possible ones. That can be quite expensive. b) Soon we'll be allocating per-cpu areas only for possible CPUs. So with CPU_MASK_ALL, we'll be wasting memory. I also switched voyager over to not use CPU_MASK_ALL in the non-CPU-hotplug case. Should be OK.. I note that parisc is also using CPU_MASK_ALL. Suggest that it stop doing that. Cc: James Bottomley <James.Bottomley@steeleye.com> Cc: Kyle McMartin <kyle@mcmartin.ca> Cc: Paul Jackson <pj@sgi.com> Cc: Ashok Raj <ashok.raj@intel.com> Cc: Zwane Mwaikambo <zwane@linuxpower.ca> Cc: Paul Jackson <pj@sgi.com> Signed-off-by:
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Andreas Gruenbacher authored
We are setting up sources for building external modules like this: /usr/src/linux-obj> # create a .config file /usr/src/linux-obj> make -C /usr/src/linux O=$PWD oldconfig /usr/src/linux-obj> make -C /usr/src/linux O=$PWD prepare /usr/src/linux-obj> make -C /usr/src/linux O=$PWD scripts /usr/src/linux-obj> make -C /usr/src/linux O=$PWD clean After that, external modules can be built with: /usr/src/module> make -C /usr/src/linux-obj M=$PWD This fails for ppc32 because the `make clean' removes the arch/powerpc/include directory. This should be done in archmrproper instead of in archclean. Signed-off-by:
Andreas Gruenbacher <agruen@suse.de> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Paul Mackerras <paulus@samba.org> Cc: Sam Ravnborg <sam@ravnborg.org> Signed-off-by:
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Heiko Carstens authored
Remove bogus comment from init function which could lead to the assumption that cpu_possible_map is setup in smp_prepare_cpus(). Signed-off-by:
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Haren Myneni authored
It is possible that the reserved crashkernel region can be overlapped with initrd since the bootloader sets the initrd location. When the initrd region is freed, the second kernel memory will not be contiguous. The Kexec_load can cause an oops since there is no contiguous memory to write the second kernel or this memory could be used in the first kernel itself and may not be part of the dump. For example, on powerpc, the initrd is located at 36MB and the crashkernel starts at 32MB. The kexec_load caused panic since writing into non-allocated memory (after 36MB). We could see the similar issue even on other archs. One possibility is to move the initrd outside of crashkernel region. But, the initrd region will be freed anyway before the system is up. This patch fixes this issue and frees only regions that are not part of crashkernel memory in case overlaps. Signed-off-by:
Haren Myneni <haren@us.ibm.com> Acked-by:
"Eric W. Biederman" <ebiederm@xmission.com> Cc: Vivek Goyal <vgoyal@in.ibm.com> Signed-off-by:
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Jesper Juhl authored
Firmware should go into /lib/firmware, not /etc/firmware. Found by Alejandro Bonilla. Signed-off-by:
Jesper Juhl <jesper.juhl@gmail.com> Signed-off-by:
Adrian Bunk <bunk@stusta.de> Acked-by:
Zhu Yi <yi.zhu@intel.com> Signed-off-by:
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Nicholas Piggin authored
I don't think the code is quite ready, which is why I asked for Peter's additions to also be merged before I acked it (although it turned out that it still isn't quite ready with his additions either). Basically I have had similar observations to Suresh in that it does not play nicely with the rest of the balancing infrastructure (and raised similar concerns in my review). The samples (group of 4) I got for "maximum recorded imbalance" on a 2x2 SMP+HT Xeon are as follows: | Following boot | hackbench 20 | hackbench 40 -----------+----------------+---------------------+--------------------- 2.6.16-rc2 | 30,37,100,112 | 5600,5530,6020,6090 | 6390,7090,8760,8470 +nosmpnice | 3, 2, 4, 2 | 28, 150, 294, 132 | 348, 348, 294, 347 Hackbench raw performance is down around 15% with smpnice (but that in itself isn't a huge deal because it is just a benchmark). However, the samples show that the imbalance passed into move_tasks is increased by about a factor of 10-30. I think this would also go some way to explaining latency blips turning up in the balancing code (though I haven't actually measured that). We'll probably have to revert this in the SUSE kernel. Cc: "Siddha, Suresh B" <suresh.b.siddha@intel.com> Acked-by: -
Linus Torvalds authored
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Kumar Gala authored
Embedded boards that u-boot require a kernel image in the uImage format. This allows a given board to specify it wants a uImage built by default. This also fixes a warning at config time, as this symbol is referred to in arch/powerpc/platforms/83xx/Kconfig. Signed-off-by:
Kumar Gala <galak@kernel.crashing.org> Signed-off-by:
Paul Mackerras <paulus@samba.org>
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Becky Bruce authored
Updated the documentation to include the definition of the USB device node format for Freescale SOC devices. Signed-off-by:
Becky Bruce <becky.bruce@freescale.com> Signed-off-by:
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JANAK DESAI authored
Registers system call for the powerpc architecture. Signed-off-by:
Janak Desai <janak@us.ibm.com> Cc: Al Viro <viro@ftp.linux.org.uk> Cc: Christoph Hellwig <hch@lst.de> Cc: Michael Kerrisk <mtk-manpages@gmx.net> Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org> Cc: Andi Kleen <ak@muc.de> Signed-off-by:
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Paul Mackerras authored
With this, new system calls only have to be wired up in one place for ARCH=ppc and ARCH=powerpc, rather than 2. Signed-off-by: -
Stephen Hemminger authored
Refactor how the bridge code interacts with kobject system. It should still use kobjects even if not using sysfs. Fix the error unwind handling in br_add_if. Signed-off-by:
Stephen Hemminger <shemminger@osdl.org> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Stephen Hemminger authored
Bridge netfilter code needs to handle the case where device is removed from bridge while packet in process. In these cases the bridge_parent can become null while processing. This should fix: http://bugzilla.kernel.org/show_bug.cgi?id=5803 Signed-off-by:
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Stephen Hemminger authored
Change Bridge receive path to correctly handle RCU removal of device from bridge. Also fixes deadlock between carrier_check and del_nbp. This replaces the previous deleted flag fix. Signed-off-by:
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John Heffner authored
The rcvbuf lock should probably be honored here. Signed-off-by:
John Heffner <jheffner@psc.edu> Signed-off-by:
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David Binderman authored
This patch fixes an out of range array access in irnet_irda.c. Author: David Binderman <dcb314@hotmail.com> Signed-off-by:
Samuel Ortiz <samuel.ortiz@nokia.com> Signed-off-by:
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