4 files changed, 41 insertions, 51 deletions

diff --git a/tools/power/cpupower/utils/helpers/cpuid.c b/tools/power/cpupower/utils/helpers/cpuid.c
index 906895d21cc..93b0aa74ca0 100644
--- a/tools/power/cpupower/utils/helpers/cpuid.c
+++ b/tools/power/cpupower/utils/helpers/cpuid.c
@@ -158,6 +158,8 @@ out:
 				cpu_info->caps |= CPUPOWER_CAP_HAS_TURBO_RATIO;
 			case 0x2A:	/* SNB */
 			case 0x2D:	/* SNB Xeon */
+			case 0x3A:	/* IVB */
+			case 0x3E:	/* IVB Xeon */
 				cpu_info->caps |= CPUPOWER_CAP_HAS_TURBO_RATIO;
 				cpu_info->caps |= CPUPOWER_CAP_IS_SNB;
 				break;
diff --git a/tools/power/cpupower/utils/helpers/helpers.h b/tools/power/cpupower/utils/helpers/helpers.h
index 2eb584cf2f5..aa9e95486a2 100644
--- a/tools/power/cpupower/utils/helpers/helpers.h
+++ b/tools/power/cpupower/utils/helpers/helpers.h
@@ -92,6 +92,14 @@ extern int get_cpu_info(unsigned int cpu, struct cpupower_cpu_info *cpu_info);
 extern struct cpupower_cpu_info cpupower_cpu_info;
 /* cpuid and cpuinfo helpers  **************************/
 
+struct cpuid_core_info {
+	int pkg;
+	int core;
+	int cpu;
+
+	/* flags */
+	unsigned int is_online:1;
+};
 
 /* CPU topology/hierarchy parsing ******************/
 struct cpupower_topology {
@@ -101,18 +109,12 @@ struct cpupower_topology {
 	unsigned int threads; /* per core */
 
 	/* Array gets mallocated with cores entries, holding per core info */
-	struct {
-		int pkg;
-		int core;
-		int cpu;
-
-		/* flags */
-		unsigned int is_online:1;
-	} *core_info;
+	struct cpuid_core_info *core_info;
 };
 
 extern int get_cpu_topology(struct cpupower_topology *cpu_top);
 extern void cpu_topology_release(struct cpupower_topology cpu_top);
+
 /* CPU topology/hierarchy parsing ******************/
 
 /* X86 ONLY ****************************************/
diff --git a/tools/power/cpupower/utils/helpers/sysfs.c b/tools/power/cpupower/utils/helpers/sysfs.c
index 96e28c124b5..38ab9162946 100644
--- a/tools/power/cpupower/utils/helpers/sysfs.c
+++ b/tools/power/cpupower/utils/helpers/sysfs.c
@@ -37,25 +37,6 @@ unsigned int sysfs_read_file(const char *path, char *buf, size_t buflen)
 	return (unsigned int) numread;
 }
 
-static unsigned int sysfs_write_file(const char *path,
-				     const char *value, size_t len)
-{
-	int fd;
-	ssize_t numwrite;
-
-	fd = open(path, O_WRONLY);
-	if (fd == -1)
-		return 0;
-
-	numwrite = write(fd, value, len);
-	if (numwrite < 1) {
-		close(fd);
-		return 0;
-	}
-	close(fd);
-	return (unsigned int) numwrite;
-}
-
 /*
  * Detect whether a CPU is online
  *
diff --git a/tools/power/cpupower/utils/helpers/topology.c b/tools/power/cpupower/utils/helpers/topology.c
index 4eae2c47ba4..c13120af519 100644
--- a/tools/power/cpupower/utils/helpers/topology.c
+++ b/tools/power/cpupower/utils/helpers/topology.c
@@ -20,9 +20,8 @@
 #include <helpers/sysfs.h>
 
 /* returns -1 on failure, 0 on success */
-int sysfs_topology_read_file(unsigned int cpu, const char *fname)
+static int sysfs_topology_read_file(unsigned int cpu, const char *fname, int *result)
 {
-	unsigned long value;
 	char linebuf[MAX_LINE_LEN];
 	char *endp;
 	char path[SYSFS_PATH_MAX];
@@ -31,20 +30,12 @@ int sysfs_topology_read_file(unsigned int cpu, const char *fname)
 			 cpu, fname);
 	if (sysfs_read_file(path, linebuf, MAX_LINE_LEN) == 0)
 		return -1;
-	value = strtoul(linebuf, &endp, 0);
+	*result = strtol(linebuf, &endp, 0);
 	if (endp == linebuf || errno == ERANGE)
 		return -1;
-	return value;
+	return 0;
 }
 
-struct cpuid_core_info {
-	unsigned int pkg;
-	unsigned int thread;
-	unsigned int cpu;
-	/* flags */
-	unsigned int is_online:1;
-};
-
 static int __compare(const void *t1, const void *t2)
 {
 	struct cpuid_core_info *top1 = (struct cpuid_core_info *)t1;
@@ -53,9 +44,9 @@ static int __compare(const void *t1, const void *t2)
 		return -1;
 	else if (top1->pkg > top2->pkg)
 		return 1;
-	else if (top1->thread < top2->thread)
+	else if (top1->core < top2->core)
 		return -1;
-	else if (top1->thread > top2->thread)
+	else if (top1->core > top2->core)
 		return 1;
 	else if (top1->cpu < top2->cpu)
 		return -1;
@@ -73,28 +64,42 @@ static int __compare(const void *t1, const void *t2)
  */
 int get_cpu_topology(struct cpupower_topology *cpu_top)
 {
-	int cpu, cpus = sysconf(_SC_NPROCESSORS_CONF);
+	int cpu, last_pkg, cpus = sysconf(_SC_NPROCESSORS_CONF);
 
-	cpu_top->core_info = malloc(sizeof(struct cpupower_topology) * cpus);
+	cpu_top->core_info = malloc(sizeof(struct cpuid_core_info) * cpus);
 	if (cpu_top->core_info == NULL)
 		return -ENOMEM;
 	cpu_top->pkgs = cpu_top->cores = 0;
 	for (cpu = 0; cpu < cpus; cpu++) {
 		cpu_top->core_info[cpu].cpu = cpu;
 		cpu_top->core_info[cpu].is_online = sysfs_is_cpu_online(cpu);
-		cpu_top->core_info[cpu].pkg =
-			sysfs_topology_read_file(cpu, "physical_package_id");
-		if ((int)cpu_top->core_info[cpu].pkg != -1 &&
-		    cpu_top->core_info[cpu].pkg > cpu_top->pkgs)
-			cpu_top->pkgs = cpu_top->core_info[cpu].pkg;
-		cpu_top->core_info[cpu].core =
-			sysfs_topology_read_file(cpu, "core_id");
+		if(sysfs_topology_read_file(
+			cpu,
+			"physical_package_id",
+			&(cpu_top->core_info[cpu].pkg)) < 0)
+			return -1;
+		if(sysfs_topology_read_file(
+			cpu,
+			"core_id",
+			&(cpu_top->core_info[cpu].core)) < 0)
+			return -1;
 	}
-	cpu_top->pkgs++;
 
 	qsort(cpu_top->core_info, cpus, sizeof(struct cpuid_core_info),
 	      __compare);
 
+	/* Count the number of distinct pkgs values. This works
+	   because the primary sort of the core_info struct was just
+	   done by pkg value. */
+	last_pkg = cpu_top->core_info[0].pkg;
+	for(cpu = 1; cpu < cpus; cpu++) {
+		if(cpu_top->core_info[cpu].pkg != last_pkg) {
+			last_pkg = cpu_top->core_info[cpu].pkg;
+			cpu_top->pkgs++;
+		}
+	}
+	cpu_top->pkgs++;
+
 	/* Intel's cores count is not consecutively numbered, there may
 	 * be a core_id of 3, but none of 2. Assume there always is 0
 	 * Get amount of cores by counting duplicates in a package