- 29 Jul, 2005 40 commits
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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:
Bodo Stroesser <bstroesser@fujitsu-siemens.com> Signed-off-by:
Jeff Dike <jdike@addtoit.com> Cc: 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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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:
Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> Cc: Jeff Dike <jdike@addtoit.com> 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:
Domen Puncer <domen@coderock.org> 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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Andi Kleen authored
Various code needs this information now before the actual SMP bootup. Instead of computing it on the fly while booting the other CPUs set it up now while initial MPtable/MADT parsing. Signed-off-by:
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Andi Kleen authored
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Andi Kleen authored
Makes it slightly more efficient. Signed-off-by:
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Andi Kleen authored
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Andi Kleen authored
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Alexander Nyberg authored
When the x86_64 cpu hotplug changes went in it added a check in default_do_nmi() which kills NMI delivery on any CPU but the BSP. The NMI watchdog is brought up quite some time before the online bit is set in num_online_cpus so this won't work very well. The nmi watchdogs on cpus that are not BSP will never be reprogrammed and no NMIs. Why was this check added? How does an offlined cpu receive an NMI? Signed-off-by:
Alexander Nyberg <alexn@telia.com> Cc: Andi Kleen <ak@suse.de> Cc: Andrew Morton <akpm@osdl.org> Cc: Zwane Mwaikambo <zwane@arm.linux.org.uk> Cc: <ashok.raj@intel.com> Signed-off-by:
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