There have been fixes using _PPC, which seem to unhide a problem
on HP nx6125 (double cpufreq switch freezes the machine for
several seconds).
This one should provide a workaround for the nx6125 and for
possible other machines that show any weird _PPC behaviour.
Signed-off-by: Thomas Renninger <trenn@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
/proc/acpi/alarm can't be set correctly, here is a sample:
[root@localhost /]# echo "2006 09" > /proc/acpi/alarm
[root@localhost /]# cat /proc/acpi/alarm
2007-12-09 09:09:09
[root@localhost /]# echo "2006 04" > /proc/acpi/alarm
[root@localhost /]# cat /proc/acpi/alarm
2007-12-04 04:04:04
[root@localhost /]#
Obviously, it is wrong, it should consider it as an invalid input.
after this patch:
[root@localhost /]# echo "2008 09" > /proc/acpi/alarm
-bash: echo: write error: Invalid argument
[root@localhost /]#
Signed-off-by: Yi Yang <yi.y.yang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
In function acpi_system_write_alarm in file drivers/acpi/sleep/proc.c,
big sec, min, hr, mo, day and yr are counted twice to get reasonable
values, that is very superfluous, we can do that only once.
In additon, /proc/acpi/alarm can set a related value which can be
specified as YYYY years MM months DD days HH hours MM minutes SS
senconds, it isn't a date, so you can specify as +0000-00-00 96:00:00
, that means 3 days later, current code can't handle such a case.
This patch removes unnecessary code and does with the aforementioned
situation.
Before applying this patch:
[root@localhost /]# cat /proc/acpi/alarm
2007-12-00 00:00:00
[root@localhost /]# echo "0000-00-00 96:180:180" > /proc/acpi/alarm
[root@localhost /]# cat /proc/acpi/alarm
0007-12-02 **:**:**
[root@localhost /]#
After applying this patch:
[root@localhost ~]# echo "2007-12-00 00:00:00" > /proc/acpi/alarm
[root@localhost ~]# cat /proc/acpi/alarm
2007-12-00 00:00:00
[root@localhost ~]# echo "0000-00-00 96:180:180" > /proc/acpi/alarm
[root@localhost ~]# cat /proc/acpi/alarm
0007-12-04 03:03:00
[root@localhost ~]#
Signed-off-by: Yi Yang <yi.y.yang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
klaptopd assumes rate to be in same units as capacity.
http://bugzilla.kernel.org/show_bug.cgi?id=9362
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
Alarm bit should be cleared in order for other alarms to be sent.
http://bugzilla.kernel.org/show_bug.cgi?id=9362
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
ACPI tables follow a tree structure in memory.
The root of the tree is the RSDP (Root System Description Pointer).
To find the RSDP, the OS searches for the signature "RSD PTR "
in well known physical memory locations. Then the OS computes
a table checksum to verify that the signature is really part
of a valid table header.
Some systems have a proper signature but an invalid checksum;
followed elsewhere by a proper signature with valid checksum.
http://bugzilla.kernel.org/show_bug.cgi?id=9444
The Linux RSDP scanning code bailed out on those systems
and as a result they booted with ACPI disabled.
Fix this by deleting the Linux RSDP scanning code and
plugging in the ACPICA RSDP scanning code.
Signed-off-by: Len Brown <len.brown@intel.com>
More aggressively request deep C-states.
Note that the job of the OS is to minimize latency
impact to expected break events such as interrupts.
It is not the job of the OS to try to calculate if
the C-state will reach energy break-even.
The platform doesn't give the OS enough information
for it to make that calculation. Thus, it is up
to the platform to decide if it is worth it to
go as deep as the OS requested it to, or if it
should internally demote to a more shallow C-state.
But the converse is not true. The platform can not
promote into a deeper C-state than the OS requested
else it may violate latency constraints. So it is
important that the OS be aggressive in giving the
platform permission to enter deep C-states.
Signed-off-by: Len Brown <len.brown@intel.com>
for sn2_defconfig:
WARNING: vmlinux.o(.text+0x4b8601): Section mismatch: reference to .init.data:node_to_pxm_map (between '__acpi_map_pxm_to_node' and 'acpi_get_pxm')
WARNING: vmlinux.o(.text+0x4b8741): Section mismatch: reference to .init.data:pxm_to_node_map (between 'acpi_map_pxm_to_node' and 'acpi_get_node')
Signed-off-by: Jan Beulich <jbeulich@novell.com>
Signed-off-by: Len Brown <len.brown@intel.com>
.. as it it used only during early boot.
Signed-off-by: Jan Beulich <jbeulich@novell.com>
arch/ia64/kernel/acpi.c | 2 +-
arch/x86/kernel/acpi/boot.c | 4 ++--
drivers/acpi/osl.c | 3 ++-
3 files changed, 5 insertions(+), 4 deletions(-)
Signed-off-by: Len Brown <len.brown@intel.com>
The ->cap fields of struct acpi_video_device and struct acpi_video_bus
are 1B each, not 4B. The oversized memset()'s corrupted the subsequent
list_head fields. This resulted in silent corruption without
CONFIG_DEBUG_LIST and BUG's with it. This patch uses sizeof() to pass
the proper bounds to the memset() calls and thereby correct the bugs.
Signed-off-by: William Irwin <wli@holomorphy.com>
Acked-by: Mikael Pettersson <mikpe@it.uu.se>
Signed-off-by: Len Brown <len.brown@intel.com>
References: https://bugzilla.novell.com/show_bug.cgi?id=302482
Signed-off-by: Thomas Renninger <trenn@novell.com>
Signed-off-by: Kay Sievers <kasievers@novell.com>
Signed-off-by: Frank Seidel <fseidel@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
References: https://bugzilla.novell.com/show_bug.cgi?id=302482
Due to the new autloading of acpi drivers, the dock driver
wasn't loaded anymore as there is no HID to identify it with
(dock is needed if ACPI has a _DCK method).
This patch is a workaround for this, original by Thomas Renninger,
revised first by Kay Sievers and last by Frank Seidel.
V2 of this patch fixed problems on systems without a defined _CID for
the docking devices.
Signed-off-by: Thomas Renninger <trenn@novell.com>
Signed-off-by: Kay Sievers <kasievers@novell.com>
Signed-off-by: Frank Seidel <fseidel@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
The timer broadcast code might access HPET, which should not be
accessed after the busmaster disable.
In acpi_idle_enter_simple() this change also prevents, that we modify
the busmaster state without going actually idle. This might leave the
ACPI bm state in a stale state, when we leave the function early in
the need_resched() check.
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
module parameter is used to prevent the thermal_zone action upon
critical trip points.
But exporting this notification to userspace is still useful.
By setting nocrt with this patch applied, ACPI will take no action
but exporting the events to userspace upon critical/hot trip points.
http://bugzilla.kernel.org/show_bug.cgi?id=9139
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
At least some systems report technology information with trailing spaces:
{pts/1}% cat -E /var/tmp/bat/2.6.23 | grep type
battery type: Li-ION $
Use strncasecmp to compare model string to skip trailing part
Signed-off-by: Andrey Borzenkov <arvidjaar@mail.ru>
Acked-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
Level GPE should not be enabled until all work caused by it is done,
e.g. all Notify() methods are completed.
This can be accomplished by appending enable_gpe function to the end
of notify queue.
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Acked-by: Shaohua Li <shaohua.li@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Changed resolution of named references in packages
Fixed a problem with the Package operator where all named
references were created as object references and left otherwise
unresolved. According to the ACPI specification, a Package can
only contain Data Objects or references to control methods. The
implication is that named references to Data Objects (Integer,
Buffer, String, Package, BufferField, Field) should be resolved
immediately upon package creation. This is the approach taken
with this change. References to all other named objects (Methods,
Devices, Scopes, etc.) are all now properly created as reference objects.
http://bugzilla.kernel.org/show_bug.cgi?id=5328http://bugzilla.kernel.org/show_bug.cgi?id=9429
Signed-off-by: Bob Moore <robert.moore@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
The IRQ operation(enable/disable) should be avoided when throttling is
controlled via PTC method. It is replaced by the migration of task.
This fixes an oops on T61 -- a regression due to
f79f06ab9f86 b/c FixedHW support tried to read remote MSR with interrupts disabled.
Signed-off-by: Zhao Yakui <yakui.zhao@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
ACPI uses NR_CPUS in various loops and in some it accesses per cpu data of
processors that are not present(!) and that will never be present.
The pointers to per cpu data are typically not initialized for processors
that are not present. So we seem to be reading something here from offset
0 in memory.
Make ACPI use nr_cpu_ids instead. That stops at the end of the possible
processors.
Convert one loop to NR_CPUS to use the cpu_possible map instead. That way
ranges of processor that can never be brought online are skipped during the
loop.
Signed-off-by: Christoph Lameter <clameter@sgi.com>
Cc: Len Brown <lenb@kernel.org>
Acked-by: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
* git://git.kernel.org/pub/scm/linux/kernel/git/x86/linux-2.6-x86:
x86: fix APIC related bootup crash on Athlon XP CPUs
time: add ADJ_OFFSET_SS_READ
x86: export the symbol empty_zero_page on the 32-bit x86 architecture
x86: fix kprobes_64.c inlining borkage
pci: use pci=bfsort for HP DL385 G2, DL585 G2
x86: correctly set UTS_MACHINE for "make ARCH=x86"
lockdep: annotate do_debug() trap handler
x86: turn off iommu merge by default
x86: fix ACPI compile for LOCAL_APIC=n
x86: printk kernel version in WARN_ON and other dump_stack users
ACPI: Set max_cstate to 1 for early Opterons.
x86: fix NMI watchdog & 'stopped time' problem
AMD Opteron processors before CG revision don't like C-states > 1.
This solves the long standing bugzilla #5303 and probably some more
on affected machines:
http://bugzilla.kernel.org/show_bug.cgi?id=5303
[ tglx@linutronix.de: reworked the patch so it does not wreck ia64 ]
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Some controllers fail to send confirmation GPE after address or data write.
Detect this and don't expect such confirmation in future.
This is a generalization of previous workaround
(66c5f4e7367b0085652931b2f3366de29e7ff5ec), which did only read address.
Reference: http://bugzilla.kernel.org/show_bug.cgi?id=9327
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Tested-by: Romano Giannetti <romano.giannetti@gmail.com>
Tested-by: Mats Johannesson
Signed-off-by: Len Brown <len.brown@intel.com>
Sometimes it is usefull to see raw protocol dump.
Uncomment '#define DEBUG' at the beginning of file to make EC
really verbose.
Signed-off-by: Márton Németh <nm127@freemail.hu>
Signed-off-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
In cases where acpi_pci_bind() does not
attach device data, acpi_pci_unbind()
complains via an ACPI exception about the missing data when
the device is removed. For example, acpi_pci_bind() does not
attach data for non-existent device functions so when the device
is removed using the ACPI PCI hotplug driver 'acpiphp' an ACPI
exception is logged for every non-existent function. This patch
avoids the confusing log messages by removing the unnecessary
ACPI exception.
Signed-off-by: Gary Hade <garyhade@us.ibm.com>
Signed-off-by: Len Brown <len.brown@intel.com>
GPEs are disabled depending on their type --
WAKE, WAKE_RUN, and RUNTIME. An error is returned
if we are asked to disable a GPE that has no type.
But at least one system exists that enables a GPE from AML
that is not the EC GPE, and has no _Lxx/_Exx AML handler,
and is thus never initialized.
In this case, when an external CRT is plugged in,
the GPE fires, we attempt to disable the GPE,
but instead just return an error.
So the GPE stays asserted and an ACPI interrupt storm follows.
The fix is to disable a firing GPE,
even if it comes from outer space.
http://bugzilla.kernel.org/show_bug.cgi?id=6217
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Acked-by: Alexey Starikovskiy <astarikovskiy@suse.de>
Signed-off-by: Len Brown <len.brown@intel.com>
Fix for http://bugzilla.kernel.org/show_bug.cgi?id=9355
cpuidle always used to fallback to C2 if there is some bm activity while
entering C3. But, presence of C2 is not always guaranteed. Change cpuidle
algorithm to detect a safe_state to fallback in case of bm_activity and
use that state instead of C2.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Port 2aa44d0567ed21b47b87d68819415d48194cb923
(sched: sched_clock_idle_[sleep|wakeup]_event()) to cpuidle.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Port 18eab8550397f1f3d4b8b2c5257c88dae25d58ed
(Enable C3 even when PM2_control is zero) to cpuidle.
Without this patch, some systems will notice a regression
when enabling CPU_IDLE -- C3 would no longer be available.
Signed-off-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
Add debug tracing support during certain AML method execution.
Four more module parameters are created under /sys/module/acpi/parameters/:
trace_method_name: the AML method name that user wants to trace
trace_debug_layer: the temporary debug_layer used when tracing the method.
Using 0xffffffff by default if it is 0.
trace_debug_level: the temporary debug_level used when tracing the method.
Using 0x00ffffff by default if it is 0.
trace_state: The status of the tracing feature.
"enabled" means this feature is enabled
and the AML method is traced every time it's executed.
"1" means this feature is enabled and the AML method
will only be traced during the next execution.
"disabled" means this feature is disabled.
Users can enable/disable this debug tracing feature by
"echo string > /sys/module/acpi/parameters/trace_state".
"string" should be one of "enable", "disable" and "1".
http://bugzilla.kernel.org/show_bug.cgi?id=6629
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>
