From 35a169737cdf9155e890d60eae2b8fffc16d16ba Mon Sep 17 00:00:00 2001 From: Palmer Cox Date: Tue, 27 Nov 2012 13:17:46 +0100 Subject: cpupower tools: Fix malloc of cpu_info structure The cpu_info member of cpupower_topology was being declared as an unnamed structure. This member was then being malloced using the size of the parent cpupower_topology * the number of cpus. This works because cpu_info is smaller than cpupower_topology. However, there is no guarantee that will always be the case. Making cpu_info its own top level structure (named cpuid_core_info) allows for mallocing the actual size of this structure. This also lets us get rid of a redefinition of the structure in topology.c with slightly different field names. Signed-off-by: Palmer Cox Signed-off-by: Thomas Renninger Signed-off-by: Rafael J. Wysocki --- tools/power/cpupower/utils/helpers/topology.c | 14 +++----------- 1 file changed, 3 insertions(+), 11 deletions(-) (limited to 'tools/power/cpupower/utils/helpers/topology.c') diff --git a/tools/power/cpupower/utils/helpers/topology.c b/tools/power/cpupower/utils/helpers/topology.c index 216f3e3..4e2b583 100644 --- a/tools/power/cpupower/utils/helpers/topology.c +++ b/tools/power/cpupower/utils/helpers/topology.c @@ -36,14 +36,6 @@ static int sysfs_topology_read_file(unsigned int cpu, const char *fname, int *re 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; @@ -52,9 +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; @@ -74,7 +66,7 @@ int get_cpu_topology(struct cpupower_topology *cpu_top) { int cpu, 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; -- cgit v1.1