- 01 Jun, 2005 32 commits
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Benjamin Herrenschmidt authored
This cleans up the /proc/device-tree representation of the Open Firmware device-tree on ppc and ppc64. It does the following things: - Workaround an issue in some Apple device-trees where a property may exist with the same name as a child node of the parent. We now simply "drop" the property instead of creating duplicate entries in /proc with random result... - Do not try to chop off the "@0" at the end of a node name whose unit address is 0. This is not useful, inconsistent, and the code was buggy and didn't always work anyway. - Do not create symlinks for the short name and unit address parts of a node. These were never really used, bloated the memory footprint of the device-tree with useless struct proc_dir_entry and their matching dentry and inode cache bloat. This results in smaller code, smaller memory footprint, and a more accurate view of the tree presented to userland. Signed-off-by:
Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by:
Linus Torvalds <torvalds@osdl.org>
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Benjamin Herrenschmidt authored
This is the ppc32 patch equivalent to the just posted ppc64 one working around a bug in Apple device-trees regarding the "cpus" nodes. Signed-off-by:
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Benjamin Herrenschmidt authored
Apple's Open Firmware has a funny bug when creating the /cpus nodes where it leaves a dangling '\0' character in the CPU name which ends up appearing in the full path of the node. This is bogus and confuses /proc/device-tree badly. This patch strips those bogus zero's from the node full path when reading the device-tree from Open Firmware. The "name" property is not modified and still contains the spurrious 0 (it basically contains 0 tailing 0 instead of one) but that shouldn't be a problem. An equivalent patch for ppc32 will follow shortly Signed-off-by:
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Venkatesh Pallipadi authored
Documentation for cpufreq stats. Signed-off-by:
Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by:
Dave Jones <davej@redhat.com>
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Venkatesh Pallipadi authored
Changes to the cpufreq stats driver: * Changes the way P-state transition table looks in /sysfs providing more clear output * Changes the time unit in the output from HZ to clock_t Signed-off-by:
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Dave Jones authored
cpfureq developers cant spel. Signed-off-by: -
Dave Jones authored
From patch by: Ken Staton <ken_staton@agilent.com> Signed-off-by: -
Dave Jones authored
As mandated by the spec, disable timer around transitions. From code by : Ken Staton <ken_staton@agilent.com Signed-off-by: -
Dave Jones authored
The spec states that we have to do this, which is *horrid*. Based on code from: Ken Staton <ken_staton@agilent.com> Signed-off-by: -
Dave Jones authored
[PATCH] [5/5] ondemand governor default sampling downfactor as 1 Make default sampling downfactor 1. This works better with earlier auto downscaling change in ondemand governor. Signed-off-by:
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Dave Jones authored
[PATCH] [4/5] ondemand governor automatic downscaling Here is a change of policy for the ondemand governor. The modification concerns the frequency downscaling. Instead of decreasing to a lower frequency when the CPU usage is under 20%, this new policy automatically scales to the optimal frequency. The optimal frequency being the lowest frequency which provides enough power to not trigger the upscaling policy. Signed-off-by:
Eric Piel <eric.piel@tremplin-utc.net> Signed-off-by:
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Dave Jones authored
[PATCH] [3/5] ondemand,conservative governor idle_tick clean-up Ondemand and conservative governor clean-up, it factorises the idle ticks measurement. Signed-off-by:
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Dave Jones authored
[PATCH] [2/5] ondemand,conservative governor store the idle ticks for all cpus Ondemand, conservative governor did not store prev_cpu_idle_up into prev_cpu_idle_down for other CPUs than the current CPU. Signed-off-by:
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Dave Jones authored
[PATCH] [1/5] ondemand,conservative minor bug-fix and cleanup Attached patch fixes some minor issues with Alexander's patch and related cleanup in both ondemand and conservative governor. Signed-off-by:
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Dave Jones authored
Adds support so that the cpufreq change stepping is no longer fixed at 5% and can be changed dynamically by the user Signed-off-by:
Alexander Clouter <alex-kernel@digriz.org.uk> Signed-off-by:
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Dave Jones authored
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Dave Jones authored
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Dave Jones authored
A new cpufreq module, based on the ondemand one with my additional patches just posted. This one is more suitable for battery environments where its probably more appealing to have the cpu freq gracefully increase and decrease rather than flip between the min and max freq's. N.B. Bruno Ducrot pointed out that the amd64's "do have unacceptable latency between min and max freq transition, due to the step-by-step requirements (200MHz IIRC)"; so AMD64 users would probably benefit from this too. Signed-off-by:
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Dave Jones authored
Fix up comment in cpufreq.h stating transition latency should be passed in microseconds -- it was decided long ago to switch to nanoseconds. Signed-off-by:
Dominik Brodowski <linux@dominikbrodowski.net> Signed-off-by:
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Dave Jones authored
With the release of the dual-core AMD Opterons last week, it's high time that cpufreq supported them. The attached patch applies cleanly to 2.6.12-rc3 and updates powernow-k8 to support the latest Athlon 64 and Opteron processors. Update the driver to version 1.40.0 and provide support for dual-core processors. Signed-off-by:
Mark Langsdorf <mark.langsdorf@amd.com> Signed-off-by:
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Dave Jones authored
This patch makes a needlessly global and EXPORT_SYMBOL'ed struct static. Signed-off-by:
Adrian Bunk <bunk@stusta.de> Signed-off-by:
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Dave Jones authored
Some cpufreq drivers (at that time, only powernow-k7) need to recalibrate the cpu_khz at runtime. Signed-off-by:
Bruno Ducrot <ducrot@poupinou.org> Signed-off-by:
Andrew Morton <akpm@osdl.org> Signed-off-by:
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Dave Jones authored
We have to recalibrate cpu_khz in order to use the current FID instead the max FID since some BIOS do not put the processor at maximum frequency at POST. Also, some BIOS will change the processor frequency at our back after cpu_khz was calibrate. Finally, this will fix a long standing bug when we do something like this: # rmmod powernow-k7 # modprobe powernow-k7 Signed-off-by:
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Dave Jones authored
From: Sean Young <sean@mess.org> Signed-off-by: -
Dave Jones authored
This comes up time and time again. Until its fixed, place this comment in the Kconfig which should stem the flow of resubmissions. Signed-off-by:
Rob Weryk <rjweryk@uwo.ca> Signed-off-by:
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Dave Jones authored
The speedstep-smi driver actually works on >=1 notebook with a Pentium 4-M CPU where all other cpufreq drivers fail. Therefore, allow speedstep-smi on P4Ms again, but warn users of likely failure Signed-off-by:
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Dave Jones authored
Trivial ondemand governor clean-ups: - change from sampling_rate_in_HZ() to the official function usecs_to_jiffies(). - use for_each_online_cpu() to instead of using "if (cpu_online(i))" Signed-off-by:
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Dave Jones authored
The Pentium 4 - Ms (HT) with CPUID 0xF34 and 0xF41 seem to support centrino-like enhanced speedstep; however, no "table" support is possible. Therefore, put NULL entries into speedstep-centrino.c Signed-off-by:
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Dave Jones authored
cpufreq core is printing out messages at KERN_WARNING level that the core recovers from without intervention, and that the system administrator can do nothing about. Patch below reduces the severity of these messages to debug. Signed-off-by:
Matt Domsch <Matt_Domsch@dell.com> Signed-off-by:
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Dave Jones authored
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- 31 May, 2005 8 commits
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Goffredo Baroncelli authored
in fs/udf/udftime.c the global array '__mon_yday' is not static, and it conflicts with the glibc one when the kernel is compiled as user mode. Signed-off-by:
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Peter Chubb authored
In file included from drivers/firmware/pcdp.c:18: drivers/firmware/pcdp.h:48: error: field `addr' has incomplete type drivers/firmware/pcdp.c: In function `setup_serial_console': drivers/firmware/pcdp.c:27: error: `ACPI_ADR_SPACE_SYSTEM_MEMORY' undeclared (first use in this function) Cc: <tony.luck@intel.com> Signed-off-by:
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Roman Zippel authored
flush_icache_range() is used in two different situation - in binfmt_elf.c & co for user space mappings and module.c for kernel modules. On m68k flush_icache_range() doesn't know which data to flush, as it has separate address spaces and the pointer argument can be valid in either address space. First I considered splitting flush_icache_range(), but this patch is simpler. Setting the correct context gives flush_icache_range() enough information to flush the correct data. Signed-off-by:
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Anton Blanchard authored
We used to have an iseries specific profiler that used /proc/profile. Now thats gone we can use the generic timer based stuff. Signed-off-by:
Anton Blanchard <anton@samba.org> Acked-by:
Stephen Rothwell <sfr@canb.auug.org.au> Signed-off-by:
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Nick Piggin authored
h8300 appears to sleep (halt) when need_resched IS set. Signed-off-by:
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Alexander Nyberg authored
This is a neverending story linux/acpi.h contains empty declarations for acpi_boot_init() & acpi_boot_table_init() but they are nested inside #ifdef CONFIG_ACPI. So we'll have to #ifdef in arch/i386/kernel/setup.c: setup_arch() Signed-off-by:
Alexander Nyberg <alexn@telia.com> Cc: "Brown, Len" <len.brown@intel.com> Signed-off-by:
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Andi Kleen authored
Make CONFIG_X86_PM_TIMER dependent on CONFIG_ACPI Signed-off-by:
Andi Kleen <ak@suse.de> Signed-off-by:
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Andi Kleen authored
Suggested by Alexander Nyberg Signed-off-by:
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