/* * Routines common for drivers handling Enhanced Speedstep Technology * Copyright (C) 2004 Venkatesh Pallipadi <venkatesh.pallipadi@intel.com> * * Licensed under the terms of the GNU GPL License version 2 -- see * COPYING for details. */ static inline int is_const_loops_cpu(unsigned int cpu) { struct cpuinfo_x86 *c = cpu_data + cpu; if (c->x86_vendor != X86_VENDOR_INTEL || !cpu_has(c, X86_FEATURE_EST)) return 0; /* * on P-4s, the TSC runs with constant frequency independent of cpu freq * when we use EST */ if (c->x86 == 0xf) return 1; return 0; }