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95235ca2c2
linux/arch/ia64/kernel
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Venkatesh Pallipadi 95235ca2c2 [CPUFREQ] CPU frequency display in /proc/cpuinfo 
What is the value shown in "cpu MHz" of /proc/cpuinfo when CPUs are capable of
changing frequency?

Today the answer is: It depends.
On i386:
SMP kernel - It is always the boot frequency
UP kernel - Scales with the frequency change and shows that was last set.

On x86_64:
There is one single variable cpu_khz that gets written by all the CPUs. So,
the frequency set by last CPU will be seen on /proc/cpuinfo of all the
CPUs in the system. What you see also depends on whether you have constant_tsc
capable CPU or not.

On ia64:
It is always boot time frequency of a particular CPU that gets displayed.

The patch below changes this to:
Show the last known frequency of the particular CPU, when cpufreq is present. If
cpu doesnot support changing of frequency through cpufreq, then boot frequency
will be shown. The patch affects i386, x86_64 and ia64 architectures.

Signed-off-by: Venkatesh Pallipadi<venkatesh.pallipadi@intel.com>
Signed-off-by: Dave Jones <davej@redhat.com>
2005-12-06 19:35:11 -08:00
..
cpufreq [IA64] Add ACPI based P-state support 2005-08-26 15:09:24 -07:00
acpi-ext.c [ACPI] Lindent all ACPI files 2005-08-05 00:45:14 -04:00
acpi.c [IA64] move ACPI IOSAPIC locality domain mapping from pci.c to acpi.c 2005-09-19 15:57:48 -07:00
asm-offsets.c [IA64] fix circular dependency on generation of asm-offsets.h 2005-09-13 08:50:39 -07:00
brl_emu.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
cyclone.c [PATCH] fix missing includes 2005-10-30 17:37:32 -08:00
efi_stub.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
efi.c [IA64] Replace kcalloc(1, with kzalloc. 2005-11-10 11:28:20 -08:00
entry.h [IA64] Drop spurious paren in entry.h 2005-06-20 09:34:02 -07:00
entry.S [IA64] Remove warnings for gcc 4.0 IA64 compilation. 2005-09-16 09:45:27 -07:00
fsys.S kbuild: ia64 use generic asm-offsets.h support 2005-09-09 22:03:13 +02:00
gate-data.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
gate.lds.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
gate.S kbuild: ia64 use generic asm-offsets.h support 2005-09-09 22:03:13 +02:00
head.S kbuild: ia64 use generic asm-offsets.h support 2005-09-09 22:03:13 +02:00
ia64_ksyms.c [IA64] - Make pfn_valid more precise for SGI Altix systems 2005-11-29 09:24:10 -08:00
init_task.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
iosapic.c [IA64] Manual merge fix for 3 files 2005-09-08 14:27:13 -07:00
irq_ia64.c [IA64] assign_irq_vector() should not panic 2005-07-11 10:30:07 -07:00
irq_lsapic.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
irq.c [IA64] wider use of for_each_cpu_mask() in arch/ia64 2005-10-25 15:10:08 -07:00
ivt.S [IA64] polish comments for tlb fault handler in ivt.S 2005-11-17 09:48:15 -08:00
jprobes.S [PATCH] Kprobes: prevent possible race conditions ia64 changes 2005-09-07 16:58:00 -07:00
kprobes.c [IA64] Remove getting break_num by decoding instruction 2005-11-29 09:24:39 -08:00
machvec.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
Makefile [PATCH] cpusets: Move the ia64 domain setup code to the generic code 2005-09-07 16:57:40 -07:00
mca_asm.S [IA64] Wire in the MCA/INIT handler stacks 2005-09-22 13:24:19 -07:00
mca_drv_asm.S [IA64] mca_drv cleanup 2005-09-16 10:39:40 -07:00
mca_drv.c Pull mca-check-psp into release branch 2005-11-10 10:38:05 -08:00
mca_drv.h [IA64] mca_drv cleanup 2005-09-16 10:39:40 -07:00
mca.c [IA64] Extend notify_die() hooks for IA64 2005-11-07 11:27:13 -08:00
minstate.h [IA64] MCA/INIT: remove the physical mode path from minstate.h 2005-09-11 14:09:12 -07:00
module.c [IA64] wider use of for_each_cpu_mask() in arch/ia64 2005-10-25 15:10:08 -07:00
numa.c [IA64] fix generic/up builds 2005-07-06 18:18:10 -07:00
pal.S Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
palinfo.c [IA64] Allow /proc/pal/cpu0/vm_info under the simulator 2005-08-31 08:34:51 -07:00
patch.c [IA64] Fix 2.6 kernel for the new ia64 assembler 2005-10-25 15:05:45 -07:00
perfmon_default_smpl.c [IA64] perfmon: make pfm_sysctl a global, and other cleanup 2005-04-25 13:08:30 -07:00
perfmon_generic.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
perfmon_itanium.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
perfmon_mckinley.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
perfmon.c [PATCH] kfree cleanup: arch 2005-11-07 07:54:06 -08:00
process.c [PATCH] kprobes: Fix return probes on sys_execve 2005-11-23 16:08:39 -08:00
ptrace.c [IA64] fix warning unused variable `g' 2005-10-28 15:52:13 -07:00
sal.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
salinfo.c [IA64] MCA/INIT: avoid reading INIT record during INIT event 2005-09-11 14:02:43 -07:00
semaphore.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
setup.c [CPUFREQ] CPU frequency display in /proc/cpuinfo 2005-12-06 19:35:11 -08:00
sigframe.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
signal.c [IA64] align signal-frame even when not using alternate signal-stack 2005-11-08 09:58:06 -08:00
smp.c [IA64] wider use of for_each_cpu_mask() in arch/ia64 2005-10-25 15:10:08 -07:00
smpboot.c [PATCH] sched: disable preempt in idle tasks 2005-11-09 07:56:33 -08:00
sys_ia64.c [IA64] Rationalise Region Definitions 2005-08-24 15:35:41 -07:00
time.c [PATCH] jiffies_64 cleanup 2005-10-30 17:37:25 -08:00
topology.c [ACPI] delete CONFIG_ACPI_BOOT 2005-08-24 12:08:54 -04:00
traps.c [IA64] Remove getting break_num by decoding instruction 2005-11-29 09:24:39 -08:00
unaligned.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
uncached.c [IA64] simplified efi memory map parsing 2005-09-08 12:39:59 -07:00
unwind_decoder.c Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
unwind_i.h Linux-2.6.12-rc2 2005-04-16 15:20:36 -07:00
unwind.c [IA64] MCA/INIT: remove obsolete unwind code 2005-09-11 14:09:34 -07:00
vmlinux.lds.S [PATCH] Kprobes: prevent possible race conditions ia64 changes 2005-09-07 16:58:00 -07:00