26 Jun, 2005
40 commits
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This fixes typos/formatting in video_extension.txt.
Signed-off-by: Pavel Machek
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Sleep code uses wrong version of lgdt, that does the wrong thing when
gdt is beyond 16MB or so.Signed-off-by: Pavel Machek
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
CONFIG_PM_DISK is long gone, but it still managed to survived at few
places.Signed-off-by: Pavel Machek
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This updates documentation and fixes pointers in MAINTAINERS file.
Signed-off-by: Pavel Machek
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Using CPU hotplug to support suspend/resume SMP. Both S3 and S4 use
disable/enable_nonboot_cpus API. The S4 part is based on Pavel's original S4
SMP patch.Signed-off-by: Li Shaohua
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
We already do kobject_hotplug for cpu offline; this adds a kobject_hotplug
call for the online case. This is being requested by developers of an
application which wants to be notified about both kinds of events.Signed-off-by: Nathan Lynch
Cc: Rusty Russell
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Dead CPU notifies online CPU that it's dead using cpu_state variable.
After switching to physical cpu hotplug, we forgot setting the variable.
This patch fixes it. Currently only __cpu_die uses it. We changed other
locations for consistency in case others use it.Signed-off-by: Shaohua Li
Acked-by: Ashok Raj
Cc: "Luck, Tony"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch provides an option to switch broadcast or use mask version for
sending IPI's. If CONFIG_HOTPLUG_CPU is defined, we choose not to use
broadcast shortcuts by default, otherwise we choose broadcast mode as default.both cases, one can change this via startup cmd line option, to choose
no-broadcast mode.no_ipi_broadcast=1
This is provided on request from Andi Kleen, since he doesnt agree with
replacing IPI shortcuts as a solution for CPU hotplug. Without removing
broadcast IPI's, it would mean lots of new code for __cpu_up() path, which
would acheive the same results.Signed-off-by: Ashok Raj
Acked-by: Andi Kleen
Acked-by: Zwane Mwaikambo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Broadcast IPI's provide un-expected behaviour for cpu hotplug. CPU's in
offline state also end up receiving the IPI. Once the cpus become online they
receive these stale IPI's which are bad and introduce unexpected behaviour.This is easily avoided by not sending a broadcast and addressing just the
CPU's in online map. Doing prelim cycle counts it appears there is no big
overhead and numbers seem around 0x3000-0x3900 on an average on x86 and x86_64
systems with CPUS running 3G, both for broadcast and mask version of the
API's.The shortcuts are useful only for flat mode (where the perf shows no
degradation), and in cluster mode, its unicast anyway. Its simpler to just
not use broadcast anymore.Signed-off-by: Ashok Raj
Acked-by: Andi Kleen
Acked-by: Zwane Mwaikambo
Signed-off-by: Shaohua Li
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch is a minor cleanup to the cpu sibling/core map. It is required
that this setup happens on a per-cpu bringup time.Signed-off-by: Ashok Raj
Acked-by: Andi Kleen
Acked-by: Zwane Mwaikambo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Experimental CPU hotplug patch for x86_64
-----------------------------------------
This supports logical CPU online and offline.
- Test with maxcpus=1, and then kick other cpu's off to test if init code
is all cleaned up. CONFIG_SCHED_SMT works as well.
- idle threads are forked on demand from keventd threads for clean startupTBD:
1. Not tested on a real NUMA machine (tested with numa=fake=2)
2. Handle ACPI pieces for physical hotplug support.Signed-off-by: Ashok Raj
Acked-by: Andi Kleen
Acked-by: Zwane Mwaikambo
Signed-off-by: Shaohua.li
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch adds __cpuinit and __cpuinitdata sections that need to exist past
boot to support cpu hotplug.Caveat: This is done *only* for EM64T CPU Hotplug support, on request from
Andi Kleen. Much of the generic hotplug code in kernel, and none of the other
archs that support CPU hotplug today, i386, ia64, ppc64, s390 and parisc dont
mark sections with __cpuinit, but only mark them as __devinit, and
__devinitdata.If someone is motivated to change generic code, we need to make sure all
existing hotplug code does not break, on other arch's that dont use __cpuinit,
and __cpudevinit.Signed-off-by: Ashok Raj
Acked-by: Andi Kleen
Acked-by: Zwane Mwaikambo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
I really wish smp_prepare_cpu() would disappear eventually. In the interim
this is ideally a weak function, so we dont end up changing several places
to define this dummy in headers.Today since the dummy declaration is done only in drivers/base/cpu.c but
the function is called in kernel/power/smp.c i get undefined reference in
my cpu hotplug code for x86_64 under development.Signed-off-by: Ashok Raj
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Clean CPU states in order to reuse smp boot code for CPU hotplug.
Signed-off-by: Li Shaohua
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Trival patch for CPU hotplug. In CPU identify part, only did cleaup for intel
CPUs. Need do for other CPUs if they support S3 SMP.Signed-off-by: Li Shaohua
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Make sibling map init per-cpu. Hotplug CPU may change the map at runtime.
Signed-off-by: Li Shaohua
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Make SEP init per-cpu, so it is hotplug safe.
Signed-off-by: Li Shaohua
Signed-off-by: Ashok Raj
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch introduces a startup parameter no_broadcast. When we enable
CONFIG_HOTPLUG_CPU, we dont want to use broadcast shortcut as it has ill
effects on a offline cpu. If we issue broadcast, the IPI is also delivered
to offline cpus, or partially up cpu causing stale IPI's to be handled,
which is a problem and can cause undesirable effects.Introduces a new startup cmdline option no_ipi_broadcast, that can be
switched at cmdline if necessary.Signed-off-by: Ashok Raj
Acked-by: Shaohua Li
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
(The i386 CPU hotplug patch provides infrastructure for some work which Pavel
is doing as well as for ACPI S3 (suspend-to-RAM) work which Li Shaohua
is doing)The following provides i386 architecture support for safely unregistering and
registering processors during runtime, updated for the current -mm tree. In
order to avoid dumping cpu hotplug code into kernel/irq/* i dropped the
cpu_online check in do_IRQ() by modifying fixup_irqs(). The difference being
that on cpu offline, fixup_irqs() is called before we clear the cpu from
cpu_online_map and a long delay in order to ensure that we never have any
queued external interrupts on the APICs. There are additional changes to s390
and ppc64 to account for this change.1) Add CONFIG_HOTPLUG_CPU
2) disable local APIC timer on dead cpus.
3) Disable preempt around irq balancing to prevent CPUs going down.
4) Print irq stats for all possible cpus.
5) Debugging check for interrupts on offline cpus.
6) Hacky fixup_irqs() to redirect irqs when cpus go off/online.
7) play_dead() for offline cpus to spin inside.
8) Handle offline cpus set in flush_tlb_others().
9) Grab lock earlier in smp_call_function() to prevent CPUs going down.
10) Implement __cpu_disable() and __cpu_die().
11) Enable local interrupts in cpu_enable() after fixup_irqs()
12) Don't fiddle with NMI on dead cpu, but leave intact on other cpus.
13) Program IRQ affinity whilst cpu is still in cpu_online_map on offline.Signed-off-by: Zwane Mwaikambo
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
I'm doing the cpu hotplug stress test and found a variable ('ready') is
overflow after several hundreds rounds of cpu hotplug. Here is a fix.Signed-off-by: Shaohua Li
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
With hpet enabled, cpu hotplug uses some routines marked with __init.
Signed-off-by: Shaohua Li
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Whitespace and CodingStyle cleanup. No functionality changes.
Signed-off-by: Andrey Panin
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Since last dmi quirk looks useless (it just prints 404 compliant url) we can
finally remove central dmi blacklist.Signed-off-by: Andrey Panin
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch moves ACPI sleep quirk out of dmi_scan.c
Signed-off-by: Andrey Panin
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch moves ACPI boot quirks out of dmi_scan.c
Signed-off-by: Andrey Panin
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Stephen's patch to remove LparData.h missed an include in lparcfg.c This
fixes a few compile warnings.Signed-off-by: Michael Ellerman
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Continue the Good Fight: Limit bootmem.h include creep.
Signed-off-by: Jon Loeliger
Signed-off-by: Kumar Gala
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
All consumers of the driver MPC10x, MPC52xx, MPC824x, MPC83xx, and MPC85xx are
all using platform devices. We can get ride of the dead code to support using
this driver with the old OCP based modelSigned-off-by: Kumar Gala
Cc: Greg KH
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Support for the OCP device model on Freescale (FSL) PPC's is no longer used.
All FSL PPC's that were using OCP have be converted to using the platform
device model.Signed-off-by: Kumar Gala
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
The e200 core is a Book-E core (similar to e500) that has a unified L1 cache
and is not cache coherent on the bus. The e200 core also adds a separate
exception level for debug exceptions. Part of this patch helps to cleanup a
few cases that are true for all Freescale Book-E parts, not just e500.Signed-off-by: Kim Phillips
Signed-off-by: Kumar Gala
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Ensure that the returned pointer from ppc_sys_get_pdata is not NULL before we
start using it. This handles any cases where we have variants of processors
on the same board with different functionality.Signed-off-by: Kumar Gala
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch,based on sample code by Roland McGrath, adds an execheap
permission check that controls the ability to make the heap executable so
that this can be prevented in almost all cases (the X server is presently
an exception, but this will hopefully be resolved in the future) so that
even programs with execmem permission will need to have the anonymous
memory mapped in order to make it executable.The only reason that we use a permission check for such restriction (vs.
making it unconditional) is that the X module loader presently needs it; it
could possibly be made unconditional in the future when X is changed.The policy patch for the execheap permission is available at:
http://pearls.tuxedo-es.org/patches/selinux/policy-execheap.patchSigned-off-by: Lorenzo Hernandez Garcia-Hierro
Acked-by: James Morris
Acked-by: Stephen Smalley
Cc: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
This patch adds an execstack permission check that controls the ability to
make the main process stack executable so that attempts to make the stack
executable can still be prevented even if the process is allowed the
existing execmem permission in order to e.g. perform runtime code
generation. Note that this does not yet address thread stacks. Note also
that unlike the execmem check, the execstack check is only applied on
mprotect calls, not mmap calls, as the current security_file_mmap hook is
not passed the necessary information presently.The original author of the code that makes the distinction of the stack
region, is Ingo Molnar, who wrote it within his patch for
/proc//maps markers.
(http://marc.theaimsgroup.com/?l=linux-kernel&m=110719881508591&w=2)The patches also can be found at:
http://pearls.tuxedo-es.org/patches/selinux/policy-execstack.patch
http://pearls.tuxedo-es.org/patches/selinux/kernel-execstack.patchpolicy-execstack.patch is the patch that needs to be applied to the policy in
order to support the execstack permission and exclude it
from general_domain_access within macros/core_macros.te.kernel-execstack.patch adds such permission to the SELinux code within
the kernel and adds the proper permission check to the selinux_file_mprotect() hook.Signed-off-by: Lorenzo Hernandez Garcia-Hierro
Acked-by: James Morris
Acked-by: Stephen Smalley
Cc: Ingo Molnar
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Out-of-tree user of remap_pfn_range hit kernel BUG at mm/memory.c:1112! It
passes an unrounded size to remap_pfn_range, which was okay before 2.6.12,
but misses remap_pte_range's new end condition. An audit of all the other
ptwalks confirms that this is the only one so exposed.Signed-off-by: Hugh Dickins
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Fix a bug on error handling in the direct I/O function.
Currently, if a file is opened with the O_DIRECT|O_SYNC flag, the write()
syscall cannot receive the EIO error after an I/O error (SCSI cable is
disconnected etc.).Return values of other points that call generic_osync_inode() are treated
appropriately.Signed-off-by: Hisashi Hifumi
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
2.6.12-git6 doesn't boot on some MIPS machines. They need the support of flat
memory and discontig memory.Signed-off-by: Yoichi Yuasa
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
A couple of drivers declare register_serial/unregister_serial prototypes
but don't use them. FRV contains a commented out call to register_serial.
Since these are deprecated, remove these unnecessary references.Signed-off-by: Russell King
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
Gcc4 doesn't like volatile casts as lvalues. Make the structure members
volatile instead.Signed-off-by: Dave Jones
Cc: "Luck, Tony"
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
I8K: add BIOS signatures of a newer Dell laptops, also there can be
more than one temperature sensor reported by BIOS. Lifted from
driver 1.25 on Massimo Dal Zotto's site.Signed-off-by: Dmitry Torokhov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds -
I8K: use module_{init|exit} instead of old style #ifdef MODULE
code, some formatting changes.Signed-off-by: Dmitry Torokhov
Signed-off-by: Andrew Morton
Signed-off-by: Linus Torvalds
