static void __init skx_idle_state_table_update()

in intel_idle.c [1500:1524]

• 9 lines of code
• 2 McCabe index (conditional complexity)

static void __init skx_idle_state_table_update(void)
{
	unsigned long long msr;

	rdmsrl(MSR_PKG_CST_CONFIG_CONTROL, msr);

	/*
	 * 000b: C0/C1 (no package C-state support)
	 * 001b: C2
	 * 010b: C6 (non-retention)
	 * 011b: C6 (retention)
	 * 111b: No Package C state limits.
	 */
	if ((msr & 0x7) < 2) {
		/*
		 * Uses the CC6 + PC0 latency and 3 times of
		 * latency for target_residency if the PC6
		 * is disabled in BIOS. This is consistent
		 * with how intel_idle driver uses _CST
		 * to set the target_residency.
		 */
		skx_cstates[2].exit_latency = 92;
		skx_cstates[2].target_residency = 276;
	}
}