Some c-states exposed by the intel_idle driver are assigned

the same line_level, which means that the most recent one
assigned can overwrite another c-state. For example, the
C1-SKL c-state is overwritten by the C1E-SKL c-state because
both have a "1" in the name and are assigned the same line
level. To fix this, check if a "sub c-state" (ex. C1E-SKL)
is being inserted. If so, check the vector of c-states if
a c-state with similar name (ex. C1-SKL) exists, and
increment the line level.

Signed-off-by: Gautam Paranjape <gautam.paranjape@intel.com>

src/cpu/abstract_cpu.cpp

@@ -218,6 +218,17 @@ void abstract_cpu::insert_cstate(const char *linux_name, const char *human_name,
 		}
 		if (*c >= '0' && *c <='9') {
 			state->line_level = strtoull(c, NULL, 10);
+			if(*(c+1) != '-'){
+				int greater_line_level = strtoull(c, NULL, 10);
+				for(unsigned int pos = 0; pos < cstates.size(); pos++){
+					if(*c == cstates[pos]->human_name[1]){
+						if(*(c+1) != cstates[pos]->human_name[2]){
+							greater_line_level = max(greater_line_level, cstates[pos]->line_level);
+							state->line_level = greater_line_level + 1;
+						}
+					}
+				}
+			}
 			break;
 		}
 		c++;