- 17 May, 2005 40 commits
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Jody McIntyre authored
This patch removes redundant NULL pointer checks before kfree() in all of drivers/ieee1394/ Signed-off-by:
Jesper Juhl <juhl-lkml@dif.dk> Signed-off-by:
Jody McIntyre <scjody@steamballoon.com> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Jody McIntyre authored
This patch contains the following possible cleanups: - #if 0 the following unused global functions: - hpsb_lock - hpsb_send_gasp - ieee1394_transactions.h: remove the stale hpsb_lock64 prototype Signed-off-by:
Adrian Bunk <bunk@stusta.de> Signed-off-by:
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Jody McIntyre authored
The options CONFIG_IEEE1394_PCILYNX_LOCALRAM and CONFIG_IEEE1394_PCILYNX_PORTS are not available for some time. Signed-off-by:
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Jody McIntyre authored
drivers/ieee1394 feature removal notices: amdtp, cmp, legacy rawiso interface Signed-off-by:
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William Lee Irwin III authored
profile=schedule parsing is not quite what it should be. First, str[7] is 'e', not ',', but then even if it did fall through, prof_on = SCHED_PROFILING would be clobbered inside if (get_option(...)) So a small amount of rearrangement is done in this patch to correct it. Signed-off-by:
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Christoph Hellwig authored
These days <linux/ioctl32.h> handles everything, no need for an asm header on just two architectures. Signed-off-by:
Christoph Hellwig <hch@lst.de> Signed-off-by:
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Randy Dunlap authored
register_chrdev() can return errors (negative) other then -EBUSY, so check for any negative error code. Signed-off-by:
Randy Dunlap <rdunlap@xenotime.net> Signed-off-by:
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Nishanth Aravamudan authored
Use helper functions to convert between timeval structure and jiffies rather than custom logic. Signed-off-by:
Nishanth Aravamudan <nacc@us.ibm.com> Signed-off-by:
Domen Puncer <domen@coderock.org> Acked-by:
Richard Henderson <rth@twiddle.net> Signed-off-by:
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Yoichi Yuasa authored
This patch had added resource management to vr41xx's pmu. Signed-off-by:
Yoichi Yuasa <yuasa@hh.iij4u.or.jp> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by:
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Stephen Smalley authored
This patch should fix the avc_alloc_node() oom condition that Andrew reported when no policy is loaded in SELinux. Prior to this patch, when no policy was loaded, the SELinux "security server" (policy engine) was only returning allowed decisions for the requested permissions for each access check. This caused the cache to thrash when trying to use SELinux for real work with no policy loaded (typically, the no policy loaded state is only for bootstrapping to the point where we can load an initial policy). This patch changes the SELinux security server to return the complete allowed access vector at once, and then to reset the cache after the initial policy load to flush the initial cache state created during bootstrapping. Signed-off-by:
Stephen Smalley <sds@tycho.nsa.gov> Signed-off-by:
James Morris <jmorris@redhat.com> Signed-off-by:
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Kirill Korotaev authored
There is a bug in do_swap_page(): when swap page happens to be unreadable, page filled with random data is mapped into user address space. The fix is to check for PageUptodate and send SIGBUS in case of error. Signed-Off-By:
Kirill Korotaev <dev@sw.ru> Signed-Off-By:
Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Acked-by:
Hugh Dickins <hugh@veritas.com> Signed-off-by:
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Andrew Morton authored
If block_read_full_page() detects an error when running get_block() it will run SetPageError(), then it will zero out the block in pagecache and will mark the buffer_head uptodate. So at the end of readahead we end up with a non-uptodate pagecache page which is marked PageError. But it has uptodate buffers. The pagefault code will run ClearPageError, will launch readpage a second time and block_read_full_page() will notice the uptodate buffers and will mark the page uptodate as well. We end up with an uptodate, !PageError page full of zeros and the error is lost. (It seems a little odd that filemap_nopage() runs ClearPageError(). I guess all of this adds up to meaning that for each attempted access to the page, the pagefault handler will retry the I/O. Which is good and bad. If the app is ignoring SIGBUS for some reason we could get a lot of back-to-back I/O errors.) Fix it by not marking the pagecache buffer_head as uptodate if the attempt to map that buffer to a disk block failed. Credit-to: Qu Fuping <fs@ercist.iscas.ac.cn> For reporting the bug and identifying its source. Signed-off-by:
Qu Fuping <fs@ercist.iscas.ac.cn> Signed-off-by:
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Matt Mackall authored
Move add_preferred_console out of CONFIG_PRINTK so serial console does the right thing. Signed-off-by:
Matt Mackall <mpm@selenic.com> Signed-off-by:
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Rik van Riel authored
The arch Makefile may override the include path order, which is used by Xen (and UML?) to make sure include/asm-xen is searched before include/asm-i386. The Makefile change to 2.6.12-rc4 made the top Makefile always override the value specified by the arch Makefile. This trivial patch makes the Xen kernel compile again. Signed-off-by:
Rik van Riel <riel@redhat.com> Signed-off-by:
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Dominik Hackl authored
Solve a dependency-problem related to the SAA7130/7134 TV-card driver. The driver won't compile with CRC32 disabled, so I added it to the select list. Signed-off-by:
Dominik Hackl <dominik@hackl.dhs.org> Signed-off-by:
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Petr Vandrovec authored
serial_cs's vendor/device identification got broken by Yum Rayan's change '[PATCH] serial_cs: Reduce stack usage in serial_event()' - it changed buf type from u_short* to char*, breaking device manufacturer & card number retrieval. Due to this my modem stopped from being recognized as special case. Code will work much better if we'll rely on first_tuple's parser instead of doing parse ourselves. Code also looks simpler after change. Signed-off-by:
Petr Vandrovec <vandrove@vc.cvut.cz> Signed-off-by:
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Zhang, Yanmin authored
On my IA64 machine, after kernel 2.6.12-rc3 boots, an edge-triggered interrupt (IRQ 46) keeps triggered over and over again. There is no IRQ 46 interrupt action handler. It has lots of impact on performance. Kernel 2.6.10 and its prior versions have no the problem. Basically, kernel 2.6.10 will mask the spurious edge interrupt if the interrupt is triggered for the second time and its status includes IRQ_DISABLE|IRQ_PENDING. Originally, IA64 kernel has its own specific _irq_desc definitions in file arch/ia64/kernel/irq.c. The definition initiates _irq_desc[irq].status to IRQ_DISABLE. Since kernel 2.6.11, it was moved to architecture independent codes, i.e. kernel/irq/handle.c, but kernel/irq/handle.c initiates _irq_desc[irq].status to 0 instead of IRQ_DISABLE. Signed-off-by:
Zhang Yanmin <yanmin.zhang@intel.com> Signed-off-by:
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Peter Osterlund authored
I found a bug in the packet writing driver that could cause data corruption. The problem arised if the driver got a write request for a sector in a "zone" it was already working on. In that case it was supposed to queue the write request until it was done processing earlier requests for the same zone, and instead work on some other zone in the mean time. However, if there was no other zone to work on, the driver would initiate two packet_data objects for the same zone, causing unpredictable things to happen. Signed-off-by:
Peter Osterlund <petero2@telia.com> Signed-off-by:
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Patrick McHardy authored
null_encrypt() needs to copy the data in case src and dst are disjunct, null_compress() needs to copy the data in any case as far as I can tell. I joined compress/decompress and encrypt/decrypt to avoid duplicating code. Without this patch ESP null_enc packets look like this: IP (tos 0x0, ttl 64, id 23130, offset 0, flags [DF], length: 128) 10.0.0.1 > 10.0.0.2: ESP(spi=0x0f9ca149,seq=0x4) 0x0000: 4500 0080 5a5a 4000 4032 cbef 0a00 0001 E...ZZ@.@2...... 0x0010: 0a00 0002 0f9c a149 0000 0004 0000 0000 .......I........ 0x0020: 0000 0000 0000 0000 0000 0000 0000 0000 ................ 0x0030: 0000 0000 0000 0000 0000 0000 0000 0000 ................ 0x0040: 0000 0000 0000 0000 0000 0000 0000 0000 ................ 0x0050: 0000 .. IP (tos 0x0, ttl 64, id 256, offset 0, flags [DF], length: 128) 10.0.0.2 > 10.0.0.1: ESP(spi=0x0e4f7b51,seq=0x2) 0x0000: 4500 0080 0100 4000 4032 254a 0a00 0002 E.....@.@2%J.... 0x0010: 0a00 0001 0e4f 7b51 0000 0002 a8a8 a8a8 .....O{Q........ 0x0020: a8a8 a8a8 a8a8 a8a8 a8a8 a8a8 a8a8 a8a8 ................ 0x0030: a8a8 a8a8 a8a8 a8a8 a8a8 a8a8 a8a8 a8a8 ................ 0x0040: a8a8 a8a8 a8a8 a8a8 a8a8 a8a8 a8a8 a8a8 ................ 0x0050: a8a8 .. Signed-off-by:Patrick McHardy <kaber@trash.net> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by:
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McMullan, Jason authored
Fix OOPS when swapping on a device that doesn't have an unplug_io_fn defined (eg, ATA Over Ethernet) Signed-off-by:
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Horst Hummel authored
dasd driver changes: - The feature check in dasd_generic_online returns an error if the devmap entry for the device is not yet available. Check for the feature after the device has been created. - Do symmetric registration/deregistration of cdev->handler. Signed-off-by:
Martin Schwidefsky <schwidefsky@de.ibm.com> Signed-off-by:
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Adrian Bunk authored
This patch fixes two possible off by one errors found by the Coverity checker (look at the period[i] and delay[j] in the two first unchanged lines). Signed-off-by:
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Adrian Bunk authored
Linus changed the second argument of __vmalloc from int to unsigned int breaking the compilation for CONFIG_MMU=n configurations (since he only changed vmalloc.c but not nommu.c). Signed-off-by:
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Andi Kleen authored
Update defconfig Signed-off-by:
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Andi Kleen authored
This patch removes the assumption that LAPIC entries contain the BSP as its first entry. This is a slight improvement to the temporary fix submitted by Suresh Siddha. - Removes assumption that LAPIC entries contain BSP first. - Builds x86_acpiid_to_apicid[] and bios_cpu_apicid[] properly with BSP as first entry. - Made maxcpus=1 boot on these systems. Since the parsing earlier in arch/x86_64/kernel/mpparse.c stopped after maxcpus entries, other entries were not processed, this causes kernel not to boot on these systems. TBD: x86_acpiid_to_apicid and bios_cpu_apicid[] seem to be exactly the same. This could be removed, but might need more work to cleanup. Signed-off-by:Ashok Raj <ashok.raj@intel.com> Signed-off-by:
Andi Kleen <ak@suse.de> Signed-off-by:
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Andi Kleen authored
Collected NMI watchdog fixes. - Fix call of check_nmi_watchdog - Remove earlier move of check_nmi_watchdog to later. It does not fix the race it was supposed to fix fully. - Remove unused P6 definitions - Add support for performance counter based watchdog on P4 systems. This allows to run it only once per second, which saves some CPU time. Previously it would run at 1000Hz, which was too much. Code ported from i386 Make this the default on Intel systems. - Use check_nmi_watchdog with local APIC based nmi - Fix race in touch_nmi_watchdog - Fix bug that caused incorrect performance counters to be programmed in a few cases on K8. - Remove useless check for local APIC - Use local_t and per_cpu variables for per CPU data. - Keep other CPUs busy during check_nmi_watchdog to make sure they really tick when in lapic mode. - Only check CPUs that are actually online. - Various other fixes. - Fix fallback path when MSRs are unimplemented Signed-off-by:
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Andi Kleen authored
Originally from Matt Tolentino Signed-off-by:
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Suresh Siddha authored
Use bitmap_zero instead of bitmap_empty to initialise cpu mask This makes it actually run reliable instead of relying on stack state. Signed-off-by:
Suresh Siddha <suresh.b.siddha@intel.com> Signed-off-by:
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Andi Kleen authored
The PTEs can point to ioremap mappings too, and these are often outside mem_map. The NUMA hash page lookup functions cannot handle out of bounds accesses properly. Signed-off-by:
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Andi Kleen authored
Allowed user programs to set a non canonical segment base, which would cause oopses in the kernel later. Credit-to: Alexander Nyberg <alexn@dsv.su.se> For identifying and reporting this bug. Signed-off-by:
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Andi Kleen authored
This works around an AMD Erratum. Signed-off-by:
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Andi Kleen authored
There are unfortunately more and more multi processor Opteron systems which don't have HPET timer support in the southbridge. This covers in particular Nvidia and VIA chipsets. They also don't guarantee that the TSCs are synchronized between CPUs; and especially with MP powernow the systems are nearly unusable because the time gets very inconsistent between CPUs. The timer code for x86-64 was originally written under the assumption that we could fall back to the HPET timer on such systems. But this doesn't work there. Another alternative is to use the ACPI PM timer as primary time source. This patch does that. The kernel only uses PM timer when there is no other choice because it has some disadvantages. Ported over from i386. It should be faster than the i386 version because I dropped the "read three times" workaround, but is still considerable slower than HPET and also does not work together with vsyscalls which have to be disabled. Cc: <mark.langsdorf@amd.com> Signed-off-by:
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Andi Kleen authored
It is unnecessary on modern Intel or AMD systems, and that is all we support on x86-64 Also causes problems on various systems Signed-off-by:
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Andi Kleen authored
It is not very useful to the user and more an kernel internal implementation detail. So hide it. Signed-off-by:
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Andi Kleen authored
Remove x86_apicid field Signed-off-by:
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Andi Kleen authored
The new TSC sync algorithm recently submitted did not work too well. The result was that some MP machines where the TSC came up of the BIOS very unsynchronized and that did not have HPET support were nearly unusable because the time would jump forwards and backwards between CPUs. After a lot of research ;-) and some more prototypes I ended up with just using the one from IA64 which looks best. It has some internal self tuning that should adapt to changing interconnect latencies. It holds up in my tests so far. I believe it was originally written by David Mosberger, I just ported it over to x86-64. See the inline comment for a description. This cleans up the code because it uses smp_call_function for syncing instead of having custom hooks in SMP bootup. Please note that the cycle numbers it outputs are too optimistic because they do not take into account the latency of WRMSR and RDTSC, which can be hundreds of cycles. It seems to be able to sync a dual Opteron to 200-300 cycles, which is probably good enough. There is a timing window during AP bootup where interrupts can see inconsistent time before the TSC is synced. It is hard to avoid unfortunately because we can only do the TSC sync after some setup, and we need to enable interrupts before that. I just ignored it for now. Signed-off-by:
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Andi Kleen authored
It could be in a memory hole not mapped in mem_map and that causes the hash lookup to go off to nirvana. Signed-off-by:
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Andi Kleen authored
Needed by big systems and only costs a few K of memory. Signed-off-by:
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Andi Kleen authored
Last round hopefully of cpu_core_id changes hopefully fow now: - Always initialize cpu_core_id for all CPUs, even when no dual core setup is detected. This prevents funny /proc/cpuinfo output - Do the same with phys_proc_id[] even when no HyperThreading - dito. - Use the CPU APIC-ID from CPUID 1 instead of the linux virtual CPU number to identify the core for AMD dual core setups. Patch for i386/x86-64. Signed-off-by:
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Andi Kleen authored
This works around a bug in the AMD K8 CPUs. Signed-off-by:
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