- 29 Jul, 2005 40 commits
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George Anzinger authored
(We found this (after a customer complained) and it is in the kernel.org kernel. Seems that for CLOCK_MONOTONIC absolute timers and clock_nanosleep calls both the request time and wall_to_monotonic are subtracted prior to the normalize resulting in an overflow in the existing normalize test. This causes the result to be shifted ~4 seconds ahead instead of ~2 seconds back in time.) The normalize code in posix-timers.c fails when the tv_nsec member is ~1.2 seconds negative. This can happen on absolute timers (and clock_nanosleeps) requested on CLOCK_MONOTONIC (both the request time and wall_to_monotonic are subtracted resulting in the possibility of a number close to -2 seconds.) This fix uses the set_normalized_timespec() (which does not have an overflow problem) to fix the problem and as a side effect makes the code cleaner. Signed-off-by:
George Anzinger <george@mvista.com> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Paolo 'Blaisorblade' Giarrusso authored
Actually implement the hostfs "sync" method. Signed-off-by:
Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> Signed-off-by:
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Christophe Lucas authored
printk() calls should include appropriate KERN_* constant. Signed-off-by:
Christophe Lucas <clucas@rotomalug.org> Signed-off-by:
Domen Puncer <domen@coderock.org> Signed-off-by:
Jeff Dike <jdike@addtoit.com> Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Signed-off-by:
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Bodo Stroesser authored
Fix a typo in wait_stub_done. Signed-off-by:
Bodo Stroesser <bstroesser@fujitsu-siemens.com> Signed-off-by:
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Jeff Dike authored
update_process_times was missing its irq_enter/irq_exit wrapper. This caused ksoftirqd to be scheduled on every clock tick. Signed-off-by:
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Jeff Dike authored
By this point, .is_user has already been set, so this assignment is useless. Signed-off-by:
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Bodo Stroesser authored
It's wrong to pop a fixed number of words from stack before calling sigreturn, as the number depends on what code is generated by the compiler for the start of stub_segv_handler(). What we need is esp containing the address of sigcontext. So we explicitly load that pointer into esp. Signed-off-by:
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Jeff Dike authored
We added an include of asm/vm86.h in include/asm-i386/ptrace.h. Since UML includes the underlying arch's ptrace.h, it needs an asm/vm86.h in order to build. Signed-off-by:
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Paolo 'Blaisorblade' Giarrusso authored
Just a Kbuild subtlety, not listing a target file inside targets causes it to be rebuilt each time, and as a consequence everything depending on it is rebuilt. Signed-off-by:
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Jeff Dike authored
With Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Revert the following patch, because of miscompilation problems in different environments leading to UML not working *at all* in TT mode; it was merged lately in 2.6 development cycle, a little after being written, and has caused problems to lots of people; I know it's a bit too long, but it shouldn't have been merged in first place, so I still apply for inclusion in the -stable tree. Anyone using this feature currently is either using some older kernel (some reports even used 2.6.12-rc4-mm2) or using this patch, as included in my -bs patchset. For now there's not yet a fix for this patch, so for now the best thing is to drop it (which was widely reported to give a working kernel, and as such was even merged in -stable tree). "Convert the boot-time host ptrace testing from clone to fork. They were essentially doing fork anyway. This cleans up the code a bit, and makes valgrind a bit happier about grinding it." URL: http://www.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=98fdffccea6cc3fe9dba32c0fcc310bcb5d71529Signed-off-by:
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Alasdair G Kergon authored
This patch is an attempt to fix deadlocks discovered in the core dm. The problems boil down to md->lock having to be held in too many places, so I've split it into two: md->suspend_lock and md->io_lock. suspend_lock is now held throughout dm_suspended() as well as dm_resume() and dm_swap_table() so that these functions cannot run concurrently: there's no requirement for that and it added complexity. DMF_FS_LOCKED becomes redundant: DMF_SUSPENDED provides adequate protection. Signed-Off-By:
Alasdair G Kergon <agk@redhat.com> Signed-off-by:
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Alasdair G Kergon authored
Avoid another bdget_disk which can deadlock. Signed-Off-By:
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Alasdair G Kergon authored
Some code tidy-ups in preparation for the next patches. Change dm_table_pre/postsuspend_targets to accept NULL. Use dm_suspended() throughout. Signed-Off-By:
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Ravikiran G Thirumalai authored
While booting with SMT disabled in bios, when using acpi srat to setup cpu_to_node[], sparse apic_ids create problems. Without this patch, intel x86_64 boxes with hyperthreading disabled in the bios (and which rely on srat for numa setup) endup having incorrect values in cpu_to_node[] arrays, causing sched domains to be built incorrectly etc. Signed-off-by:
Ravikiran Thirumalai <kiran@scalex86.org> Signed-off-by:
Shai Fultheim <shai@scalex86.org> Cc: Andi Kleen <ak@suse.de> Signed-off-by:
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Andi Kleen authored
arch/x86_64/pci/k8-bus.c: In function `fill_mp_bus_to_cpumask': arch/x86_64/pci/k8-bus.c:32: warning: unused variable `printed' Signed-off-by:
Andi Kleen <ak@suse.de> Signed-off-by:
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Nishanth Aravamudan authored
Replace schedule_timeout() with msleep() to guarantee the task delays as expected. Signed-off-by:
Nishanth Aravamudan <nacc@us.ibm.com> Signed-off-by:
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Jesse Millan authored
This patch eliminates the GCC4 warning on the x86_64 platform: kernel/sched.c:1824: warning: control may reach end of non-void function 'sched_find_first_bit' being inlined. The change follows the lead of others, i.e. it is guaranteed that at least one of b[0], b[1], or b[2] will have a bit set and evaluate to true. That being said, GCC4.0.0 notices that the code flow does not return anything if b[0], b[1] and b[2] are not true. Since we know better, if it's not b[0] or b[1], it has to be b[2]. Signed-off-by:
Jesse Millan <jessem@cs.pdx.edu> Signed-off-by:
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Andi Kleen authored
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Andi Kleen authored
This avoids some potential stack overflows with very deep softirq callchains. i386 does this too. TOADD CFI annotation Signed-off-by:
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Andi Kleen authored
Save a byte here and there. Ultimatively useless, but these things always catch my eyes when reading the code so just fix them for now. Also I got at least one patch fixing of them already, which gives a good excuse. Signed-off-by:
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Andi Kleen authored
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Andi Kleen authored
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Andi Kleen authored
This avoids confusing the disassembler. Costs 2 bytes per BUG. Thanks to Suresh Siddha and Jan Beulich for suggesting suitable instructions. Signed-off-by:
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Andreas Gruenbacher authored
Icecream preprocesses c sources locally, and sends the result off to a remote host for compiling. It does not recognize includes at assembler level. The fix is to put the assemberincludes an a separate .s file, which will always be assembled locally. Signed-off-by:
Andreas Gruenbacher <agruen@suse.de> Signed-off-by:
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Andi Kleen authored
Use physical mode instead of logical mode to address more CPUs. This is also used in the CPU hotplug case to avoid a race. Signed-off-by:
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Andi Kleen authored
Will be obsolete with physflat. Signed-off-by:
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Andi Kleen authored
Not used anymore since quite some time. Just uses -m32 instead. Signed-off-by:
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Andi Kleen authored
This patch will create machinecheck sysdev directories per CPU. All of the cpus still share the same ctl banks. When compiled with CONFIG_HOTPLUG_CPU, it will also bring up/down sysdev directories as cpus go up/down. I have tested the patch along with CONFIG_HOTPLUG_CPU option on in 2.6.13-rc1 kernel. Minor changes by AK: remove useless unload function Signed-off-by:
Jacob Shin <jacob.shin@amd.com> Signed-off-by:
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Andi Kleen authored
From: Keith Manning Print a boot message for hotplug memory zones Signed-off-by:
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Keith Mannthey authored
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Andi Kleen authored
Harmless because the kernel didn't use it. Noticed by Travis Betak Signed-off-by:
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Andi Kleen authored
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Andi Kleen authored
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Andi Kleen authored
Were either outdated or misleading. Signed-off-by:
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Andi Kleen authored
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Andi Kleen authored
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Andi Kleen authored
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Andi Kleen authored
Minor cleanup. Move things into their include files, remove obsolete includes, fix indentation, remove obsolete special cases etc. I also added the per cpu section to asm-generic/sections.h and fixed init/main.c to use it. Signed-off-by:
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Andi Kleen authored
No need to print kernel addresses there and clarify what the APIC-ID is. Signed-off-by:
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Andi Kleen authored
Does not change any semantics because numa_add_cpu checks for CPU 0 anyways. Signed-off-by:
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