From 480e697681763cf31f015eb1ebad49a495f562c5 Mon Sep 17 00:00:00 2001
From: Martin Kroeker <martin@ruby.chemie.uni-freiburg.de>
Date: Mon, 24 Jul 2017 16:17:50 +0200
Subject: [PATCH] Revert "Honor cgroup/cpuset limits when enumerating cpus"
 (#1246)

---
 driver/others/init.c   | 49 +++++--------------------------------------------
 driver/others/memory.c | 37 -------------------------------------
 2 files changed, 5 insertions(+), 81 deletions(-)

diff --git a/driver/others/init.c b/driver/others/init.c
index 4c75d72..3e61769 100644
--- a/driver/others/init.c
+++ b/driver/others/init.c
@@ -778,11 +778,11 @@ static int initialized = 0;
 void gotoblas_affinity_init(void) {
 
   int cpu, num_avail;
-#ifndef USE_OPENMP	
+#ifndef USE_OPENMP
   cpu_set_t cpu_mask;
 #endif
   int i;
-	
+
   if (initialized) return;
 
   initialized = 1;
@@ -826,54 +826,15 @@ void gotoblas_affinity_init(void) {
   common -> shmid = pshmid;
 
   if (common -> magic != SH_MAGIC) {
-    cpu_set_t *cpusetp;
-    int nums;
-    int ret;
-
 #ifdef DEBUG
     fprintf(stderr, "Shared Memory Initialization.\n");
 #endif
 
     //returns the number of processors which are currently online
-
-    nums = sysconf(_SC_NPROCESSORS_CONF);
-     
-#if !defined(__GLIBC_PREREQ) || !__GLIBC_PREREQ(2, 3)
-    common->num_procs = nums;
-#elif __GLIBC_PREREQ(2, 7)
-    cpusetp = CPU_ALLOC(nums);
-    if (cpusetp == NULL) {
-        common->num_procs = nums;
-    } else {
-        size_t size;
-        size = CPU_ALLOC_SIZE(nums);
-        ret = sched_getaffinity(0,size,cpusetp);
-        if (ret!=0) 
-            common->num_procs = nums;
-        else
-            common->num_procs = CPU_COUNT_S(size,cpusetp);
-    }
-    CPU_FREE(cpusetp);
-#else
-    ret = sched_getaffinity(0,sizeof(cpu_set_t), cpusetp);
-    if (ret!=0) {
-        common->num_procs = nums;
-    } else {
-#if !__GLIBC_PREREQ(2, 6)  
-    int i;
-    int n = 0;
-    for (i=0;i<nums;i++)
-        if (CPU_ISSET(i,cpusetp)) n++;
-    common->num_procs = n;
-    }
-#else
-    common->num_procs = CPU_COUNT(sizeof(cpu_set_t),cpusetp);
-#endif
-
-#endif 
+    common -> num_procs = sysconf(_SC_NPROCESSORS_CONF);;
 
     if(common -> num_procs > MAX_CPUS) {
-      fprintf(stderr, "\nOpenBLAS Warning : The number of CPU/Cores(%d) is beyond the limit(%d). Terminated.\n", common->num_procs, MAX_CPUS);
+      fprintf(stderr, "\nOpenBLAS Warining : The number of CPU/Cores(%d) is beyond the limit(%d). Terminated.\n", common->num_procs, MAX_CPUS);
       exit(1);
     }
 
@@ -886,7 +847,7 @@ void gotoblas_affinity_init(void) {
     if (common -> num_nodes > 1) numa_mapping();
 
     common -> final_num_procs = 0;
-    for(i = 0; i < common -> avail_count; i++) common -> final_num_procs += rcount(common -> avail[i]) + 1;   //Make the max cpu number.
+    for(i = 0; i < common -> avail_count; i++) common -> final_num_procs += rcount(common -> avail[i]) + 1;   //Make the max cpu number. 
 
     for (cpu = 0; cpu < common -> final_num_procs; cpu ++) common -> cpu_use[cpu] =  0;
 
diff --git a/driver/others/memory.c b/driver/others/memory.c
index 38d0637..9169503 100644
--- a/driver/others/memory.c
+++ b/driver/others/memory.c
@@ -175,44 +175,7 @@ int get_num_procs(void);
 #else
 int get_num_procs(void) {
   static int nums = 0;
-cpu_set_t *cpusetp;
-size_t size;
-int ret;
-int i,n;
-
   if (!nums) nums = sysconf(_SC_NPROCESSORS_CONF);
-#if !defined(OS_LINUX)
-     return nums;
-#endif
-     
-#if !defined(__GLIBC_PREREQ)
-   return nums;
-#endif   
-#if !__GLIBC_PREREQ(2, 3)
-   return nums;
-#endif   
-
-#if !__GLIBC_PREREQ(2, 7)
-  ret = sched_getaffinity(0,sizeof(cpu_set_t), cpusetp);
-  if (ret!=0) return nums;
-  n=0;
-#if !__GLIBC_PREREQ(2, 6)  
-  for (i=0;i<nums;i++)
-     if (CPU_ISSET(i,cpusetp)) n++;
-  nums=n;   
-#else
-  nums = CPU_COUNT(sizeof(cpu_set_t),cpusetp);
-#endif
-  return nums;
-#endif
-
-  cpusetp = CPU_ALLOC(nums);
-  if (cpusetp == NULL) return nums;
-  size = CPU_ALLOC_SIZE(nums);
-  ret = sched_getaffinity(0,size,cpusetp);
-  if (ret!=0) return nums;
-  nums = CPU_COUNT_S(size,cpusetp);
-  CPU_FREE(cpusetp);
   return nums;
 }
 #endif
-- 
2.7.4