Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux

Pull s390 fixes from Martin Schwidefsky:
 "Two patches to save some memory if CONFIG_NR_CPUS is large, a changed
  default for the use of compare-and-delay, and a couple of bug fixes"

* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/s390/linux:
  s390/spinlock: disabled compare-and-delay by default
  s390/mm: align 64-bit PIE binaries to 4GB
  s390/cacheinfo: coding style changes
  s390/cacheinfo: fix shared cpu masks
  s390/smp: reduce size of struct pcpu
  s390/topology: convert cpu_topology array to per cpu variable
  s390/topology: delay initialization of topology cpu masks
  s390/vdso: fix clock_gettime for CLOCK_THREAD_CPUTIME_ID, -2 and -3

1 files changed, 7 insertions, 18 deletions

diff --git a/arch/s390/kernel/cache.c b/arch/s390/kernel/cache.c
index 632fa06ea162..0969d113b3d6 100644
--- a/arch/s390/kernel/cache.c
+++ b/arch/s390/kernel/cache.c
@@ -91,12 +91,9 @@ static inline enum cache_type get_cache_type(struct cache_info *ci, int level)
 {
 	if (level >= CACHE_MAX_LEVEL)
 		return CACHE_TYPE_NOCACHE;
-
 	ci += level;
-
 	if (ci->scope != CACHE_SCOPE_SHARED && ci->scope != CACHE_SCOPE_PRIVATE)
 		return CACHE_TYPE_NOCACHE;
-
 	return cache_type_map[ci->type];
 }
 
@@ -111,23 +108,19 @@ static inline unsigned long ecag(int ai, int li, int ti)
 }
 
 static void ci_leaf_init(struct cacheinfo *this_leaf, int private,
-			 enum cache_type type, unsigned int level)
+			 enum cache_type type, unsigned int level, int cpu)
 {
 	int ti, num_sets;
-	int cpu = smp_processor_id();
 
 	if (type == CACHE_TYPE_INST)
 		ti = CACHE_TI_INSTRUCTION;
 	else
 		ti = CACHE_TI_UNIFIED;
-
 	this_leaf->level = level + 1;
 	this_leaf->type = type;
 	this_leaf->coherency_line_size = ecag(EXTRACT_LINE_SIZE, level, ti);
-	this_leaf->ways_of_associativity = ecag(EXTRACT_ASSOCIATIVITY,
-						level, ti);
+	this_leaf->ways_of_associativity = ecag(EXTRACT_ASSOCIATIVITY, level, ti);
 	this_leaf->size = ecag(EXTRACT_SIZE, level, ti);
-
 	num_sets = this_leaf->size / this_leaf->coherency_line_size;
 	num_sets /= this_leaf->ways_of_associativity;
 	this_leaf->number_of_sets = num_sets;
@@ -145,7 +138,6 @@ int init_cache_level(unsigned int cpu)
 
 	if (!this_cpu_ci)
 		return -EINVAL;
-
 	ct.raw = ecag(EXTRACT_TOPOLOGY, 0, 0);
 	do {
 		ctype = get_cache_type(&ct.ci[0], level);
@@ -154,34 +146,31 @@ int init_cache_level(unsigned int cpu)
 		/* Separate instruction and data caches */
 		leaves += (ctype == CACHE_TYPE_SEPARATE) ? 2 : 1;
 	} while (++level < CACHE_MAX_LEVEL);
-
 	this_cpu_ci->num_levels = level;
 	this_cpu_ci->num_leaves = leaves;
-
 	return 0;
 }
 
 int populate_cache_leaves(unsigned int cpu)
 {
+	struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);
+	struct cacheinfo *this_leaf = this_cpu_ci->info_list;
 	unsigned int level, idx, pvt;
 	union cache_topology ct;
 	enum cache_type ctype;
-	struct cpu_cacheinfo *this_cpu_ci = get_cpu_cacheinfo(cpu);
-	struct cacheinfo *this_leaf = this_cpu_ci->info_list;
 
 	ct.raw = ecag(EXTRACT_TOPOLOGY, 0, 0);
 	for (idx = 0, level = 0; level < this_cpu_ci->num_levels &&
 	     idx < this_cpu_ci->num_leaves; idx++, level++) {
 		if (!this_leaf)
 			return -EINVAL;
-
 		pvt = (ct.ci[level].scope == CACHE_SCOPE_PRIVATE) ? 1 : 0;
 		ctype = get_cache_type(&ct.ci[0], level);
 		if (ctype == CACHE_TYPE_SEPARATE) {
-			ci_leaf_init(this_leaf++, pvt, CACHE_TYPE_DATA, level);
-			ci_leaf_init(this_leaf++, pvt, CACHE_TYPE_INST, level);
+			ci_leaf_init(this_leaf++, pvt, CACHE_TYPE_DATA, level, cpu);
+			ci_leaf_init(this_leaf++, pvt, CACHE_TYPE_INST, level, cpu);
 		} else {
-			ci_leaf_init(this_leaf++, pvt, ctype, level);
+			ci_leaf_init(this_leaf++, pvt, ctype, level, cpu);
 		}
 	}
 	return 0;