From: "Gautham R. Shenoy" <e...@linux.vnet.ibm.com> Hi,
Currently, the code in setup-common.c for powerpc assumes that all clock rates are same in a smp system. This value is cached in the variable named ppc_proc_freq and is the value that is reported in /proc/cpuinfo. However on the PowerNV platform, the clock rate is same only across the threads of the same core. Hence the value that is reported in /proc/cpuinfo is incorrect on PowerNV platforms. This patch-series fixes this problem by having /proc/cpuinfo report the value returned by cpufreq_quick_get(cpu) whenever the cpufreq backend driver is available and fallback to the old way of reporting the clock rate in its absence. These patches depend on the patches to enable dynamic cpufrequency scaling on PowerNV that can be found here: http://linuxppc.10917.n7.nabble.com/PATCH-v2-0-6-powernv-cpufreq-Dynamic-cpu-frequency-scaling-td80641.html Gautham R. Shenoy (2): powerpc: powernv: Framework to show the correct clock in /proc/cpuinfo powerpc: powernv: Implement ppc_md.get_proc_freq() arch/powerpc/include/asm/machdep.h | 2 ++ arch/powerpc/kernel/setup-common.c | 16 ++++++++++++---- arch/powerpc/platforms/powernv/setup.c | 21 +++++++++++++++++++++ 3 files changed, 35 insertions(+), 4 deletions(-) -- 1.8.3.1 _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev
