cache_hit_threshold is just a var now

paboldin · paboldin · commit c99f428d07f2 · 2018-01-05T20:15:48.000+02:00
Signed-off-by: Pavel Boldin &lt;boldin.pavel@gmail.com&gt;
diff --git a/meltdown.c b/meltdown.c
@@ -83,7 +83,7 @@ get_access_time(volatile char *addr)
 	return time2 - time1;
 }
 
-static int CACHE_HIT_THRESHOLD = 80;
+static int cache_hit_threshold;
 static int hist[BITS_BY_READ];
 void check(void)
 {
@@ -95,7 +95,7 @@ void check(void)
 
 		time = get_access_time(addr);
 
-		if (time <= CACHE_HIT_THRESHOLD)
+		if (time <= cache_hit_threshold)
 			hist[i]++;
 	}
 }
@@ -183,7 +183,7 @@ set_cache_hit_threshold(void)
 	long cached, uncached, i;
 
 	if (0) {
-		CACHE_HIT_THRESHOLD = 80;
+		cache_hit_threshold = 80;
 		return;
 	}
 
@@ -201,10 +201,10 @@ set_cache_hit_threshold(void)
 	cached /= ESTIMATE_CYCLES;
 	uncached /= ESTIMATE_CYCLES;
 
-	CACHE_HIT_THRESHOLD = mysqrt(cached * uncached);
+	cache_hit_threshold = mysqrt(cached * uncached);
 
 	printf("cached = %ld, uncached = %ld, threshold %d\n",
-	       cached, uncached, CACHE_HIT_THRESHOLD);
+	       cached, uncached, cache_hit_threshold);
 }
 
 int main(int argc, char *argv[])

Original file line number	Diff line number	Diff line change
`@@ -83,7 +83,7 @@ get_access_time(volatile char *addr)`
`83`	`83`	`return time2 - time1;`
`84`	`84`	`}`
`85`	`85`
`86`		`-static int CACHE_HIT_THRESHOLD = 80;`
	`86`	`+static int cache_hit_threshold;`
`87`	`87`	`static int hist[BITS_BY_READ];`
`88`	`88`	`void check(void)`
`89`	`89`	`{`
`@@ -95,7 +95,7 @@ void check(void)`
`95`	`95`
`96`	`96`	`time = get_access_time(addr);`
`97`	`97`
`98`		`- if (time <= CACHE_HIT_THRESHOLD)`
	`98`	`+ if (time <= cache_hit_threshold)`
`99`	`99`	`hist[i]++;`
`100`	`100`	`}`
`101`	`101`	`}`
`@@ -183,7 +183,7 @@ set_cache_hit_threshold(void)`
`183`	`183`	`long cached, uncached, i;`
`184`	`184`
`185`	`185`	`if (0) {`
`186`		`- CACHE_HIT_THRESHOLD = 80;`
	`186`	`+ cache_hit_threshold = 80;`
`187`	`187`	`return;`
`188`	`188`	`}`
`189`	`189`
`@@ -201,10 +201,10 @@ set_cache_hit_threshold(void)`
`201`	`201`	`cached /= ESTIMATE_CYCLES;`
`202`	`202`	`uncached /= ESTIMATE_CYCLES;`
`203`	`203`
`204`		`- CACHE_HIT_THRESHOLD = mysqrt(cached * uncached);`
	`204`	`+ cache_hit_threshold = mysqrt(cached * uncached);`
`205`	`205`
`206`	`206`	`printf("cached = %ld, uncached = %ld, threshold %d\n",`
`207`		`- cached, uncached, CACHE_HIT_THRESHOLD);`
	`207`	`+ cached, uncached, cache_hit_threshold);`
`208`	`208`	`}`
`209`	`209`
`210`	`210`	`int main(int argc, char *argv[])`