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The core cpufreq code doesn't appear to understand returning -EAGAIN for the get() function of the cpufreq_driver. If PAL_GET_PSTATE returns -1, such as when running on Xen, scaling_cur_freq is happy to return 4294967285 kHz (ie. (unsigned)-11). The other drivers appear to return 0 for a failure, and doing so gives me the max frequency from scaling_cur_frequency and "<unknown>" from cpuinfo_cur_frequency. I believe that's the desired behavior. Signed-off-by: Alex Williamson <alex.williamson@hp.com> Acked-by: Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> Signed-off-by: Tony Luck <tony.luck@intel.com> |
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.. | ||
cpufreq | ||
acpi-ext.c | ||
acpi-processor.c | ||
acpi.c | ||
asm-offsets.c | ||
audit.c | ||
brl_emu.c | ||
crash_dump.c | ||
crash.c | ||
cyclone.c | ||
efi_stub.S | ||
efi.c | ||
entry.h | ||
entry.S | ||
err_inject.c | ||
esi_stub.S | ||
esi.c | ||
fsys.S | ||
fsyscall_gtod_data.h | ||
gate-data.S | ||
gate.lds.S | ||
gate.S | ||
head.S | ||
ia64_ksyms.c | ||
init_task.c | ||
iosapic.c | ||
irq_ia64.c | ||
irq_lsapic.c | ||
irq.c | ||
ivt.S | ||
jprobes.S | ||
kprobes.c | ||
machine_kexec.c | ||
machvec.c | ||
Makefile | ||
mca_asm.S | ||
mca_drv_asm.S | ||
mca_drv.c | ||
mca_drv.h | ||
mca.c | ||
minstate.h | ||
module.c | ||
msi_ia64.c | ||
numa.c | ||
pal.S | ||
palinfo.c | ||
patch.c | ||
perfmon_default_smpl.c | ||
perfmon_generic.h | ||
perfmon_itanium.h | ||
perfmon_mckinley.h | ||
perfmon_montecito.h | ||
perfmon.c | ||
process.c | ||
ptrace.c | ||
relocate_kernel.S | ||
sal.c | ||
salinfo.c | ||
semaphore.c | ||
setup.c | ||
sigframe.h | ||
signal.c | ||
smp.c | ||
smpboot.c | ||
sys_ia64.c | ||
time.c | ||
topology.c | ||
traps.c | ||
unaligned.c | ||
uncached.c | ||
unwind_decoder.c | ||
unwind_i.h | ||
unwind.c | ||
vmlinux.lds.S |