File powertop_cstate_fix.patch of Package powertop

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File powertop_cstate_fix.patch of Package powertop

commit f3f350f138912dc89abb37676f7e65fc6057ec53
Author: Gautam Paranjape <gautam.paranjape@intel.com>
Date:   Fri Jul 21 07:02:13 2017 -0700

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>

diff --git a/src/cpu/abstract_cpu.cpp b/src/cpu/abstract_cpu.cpp
index bc32336..c59721c 100644
--- a/src/cpu/abstract_cpu.cpp
+++ b/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++;

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File powertop_cstate_fix.patch of Package powertop

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