[PATCH 3/4] cpumask: Rename 'alloc_bootmem_cpumask_var()' to 'zalloc_bootmem_cpumask_var()'

[Ingo Molnar <mingo@kernel.org>]

This API is somewhat confusingly named 'alloc', despite returning zeroed
cpumasks. Rename it to 'zalloc' to be in line with usual terminology.

Bootmem allocations are always zero initialized.

(Also fix a typo in a comment of this API while at it.)

Signed-off-by: Ingo Molnar <mingo@kernel.org>
---
 arch/powerpc/mm/numa.c               | 2 +-
 arch/powerpc/platforms/pseries/smp.c | 2 +-
 arch/x86/kernel/cpu/common.c         | 8 ++++----
 arch/x86/mm/numa.c                   | 2 +-
 include/linux/cpumask.h              | 4 ++--
 kernel/rcu/tree_plugin.h             | 2 +-
 kernel/sched/core.c                  | 2 +-
 kernel/time/tick-sched.c             | 2 +-
 lib/cpumask.c                        | 6 +++---
 9 files changed, 15 insertions(+), 15 deletions(-)

diff --git a/arch/powerpc/mm/numa.c b/arch/powerpc/mm/numa.c
index 669a15e7fa76..762f7ea55e78 100644
--- a/arch/powerpc/mm/numa.c
+++ b/arch/powerpc/mm/numa.c
@@ -81,7 +81,7 @@ static void __init setup_node_to_cpumask_map(void)
 
 	/* allocate the map */
 	for_each_node(node)
-		alloc_bootmem_cpumask_var(&node_to_cpumask_map[node]);
+		zalloc_bootmem_cpumask_var(&node_to_cpumask_map[node]);
 
 	/* cpumask_of_node() will now work */
 	dbg("Node to cpumask map for %d nodes\n", nr_node_ids);
diff --git a/arch/powerpc/platforms/pseries/smp.c b/arch/powerpc/platforms/pseries/smp.c
index 6932ea803e33..f22944b8033b 100644
--- a/arch/powerpc/platforms/pseries/smp.c
+++ b/arch/powerpc/platforms/pseries/smp.c
@@ -230,7 +230,7 @@ static void __init smp_init_pseries(void)
 
 	pr_debug(" -> smp_init_pSeries()\n");
 
-	alloc_bootmem_cpumask_var(&of_spin_mask);
+	zalloc_bootmem_cpumask_var(&of_spin_mask);
 
 	/*
 	 * Mark threads which are still spinning in hold loops
diff --git a/arch/x86/kernel/cpu/common.c b/arch/x86/kernel/cpu/common.c
index 105da8df87ae..a9f43c4d9c28 100644
--- a/arch/x86/kernel/cpu/common.c
+++ b/arch/x86/kernel/cpu/common.c
@@ -61,10 +61,10 @@ cpumask_var_t cpu_sibling_setup_mask;
 /* correctly size the local cpu masks */
 void __init setup_cpu_local_masks(void)
 {
-	alloc_bootmem_cpumask_var(&cpu_initialized_mask);
-	alloc_bootmem_cpumask_var(&cpu_callin_mask);
-	alloc_bootmem_cpumask_var(&cpu_callout_mask);
-	alloc_bootmem_cpumask_var(&cpu_sibling_setup_mask);
+	zalloc_bootmem_cpumask_var(&cpu_initialized_mask);
+	zalloc_bootmem_cpumask_var(&cpu_callin_mask);
+	zalloc_bootmem_cpumask_var(&cpu_callout_mask);
+	zalloc_bootmem_cpumask_var(&cpu_sibling_setup_mask);
 }
 
 static void default_init(struct cpuinfo_x86 *c)
diff --git a/arch/x86/mm/numa.c b/arch/x86/mm/numa.c
index c3b3f653ed0c..8f2875f4b854 100644
--- a/arch/x86/mm/numa.c
+++ b/arch/x86/mm/numa.c
@@ -122,7 +122,7 @@ void __init setup_node_to_cpumask_map(void)
 
 	/* allocate the map */
 	for (node = 0; node < nr_node_ids; node++)
-		alloc_bootmem_cpumask_var(&node_to_cpumask_map[node]);
+		zalloc_bootmem_cpumask_var(&node_to_cpumask_map[node]);
 
 	/* cpumask_of_node() will now work */
 	pr_debug("Node to cpumask map for %d nodes\n", nr_node_ids);
diff --git a/include/linux/cpumask.h b/include/linux/cpumask.h
index 0d24286fe8f8..719fecaa64e4 100644
--- a/include/linux/cpumask.h
+++ b/include/linux/cpumask.h
@@ -656,7 +656,7 @@ typedef struct cpumask *cpumask_var_t;
 bool alloc_cpumask_var_node(cpumask_var_t *mask, gfp_t flags, int node);
 bool zalloc_cpumask_var_node(cpumask_var_t *mask, gfp_t flags, int node);
 bool zalloc_cpumask_var(cpumask_var_t *mask, gfp_t flags);
-void alloc_bootmem_cpumask_var(cpumask_var_t *mask);
+void zalloc_bootmem_cpumask_var(cpumask_var_t *mask);
 void free_cpumask_var(cpumask_var_t mask);
 void free_bootmem_cpumask_var(cpumask_var_t mask);
 
@@ -684,7 +684,7 @@ static inline bool zalloc_cpumask_var_node(cpumask_var_t *mask, gfp_t flags,
 	return true;
 }
 
-static inline void alloc_bootmem_cpumask_var(cpumask_var_t *mask)
+static inline void zalloc_bootmem_cpumask_var(cpumask_var_t *mask)
 {
 }
 
diff --git a/kernel/rcu/tree_plugin.h b/kernel/rcu/tree_plugin.h
index 630c19772630..2fc158fa07a1 100644
--- a/kernel/rcu/tree_plugin.h
+++ b/kernel/rcu/tree_plugin.h
@@ -1804,7 +1804,7 @@ static void increment_cpu_stall_ticks(void)
 /* Parse the boot-time rcu_nocb_mask CPU list from the kernel parameters. */
 static int __init rcu_nocb_setup(char *str)
 {
-	alloc_bootmem_cpumask_var(&rcu_nocb_mask);
+	zalloc_bootmem_cpumask_var(&rcu_nocb_mask);
 	have_rcu_nocb_mask = true;
 	cpulist_parse(str, rcu_nocb_mask);
 	return 1;
diff --git a/kernel/sched/core.c b/kernel/sched/core.c
index aa7f8e965386..d57eeb6df663 100644
--- a/kernel/sched/core.c
+++ b/kernel/sched/core.c
@@ -6171,7 +6171,7 @@ cpu_attach_domain(struct sched_domain *sd, struct root_domain *rd, int cpu)
 /* Setup the mask of cpus configured for isolated domains */
 static int __init isolated_cpu_setup(char *str)
 {
-	alloc_bootmem_cpumask_var(&cpu_isolated_map);
+	zalloc_bootmem_cpumask_var(&cpu_isolated_map);
 	cpulist_parse(str, cpu_isolated_map);
 	return 1;
 }
diff --git a/kernel/time/tick-sched.c b/kernel/time/tick-sched.c
index b6cf842440c8..94e56927c79e 100644
--- a/kernel/time/tick-sched.c
+++ b/kernel/time/tick-sched.c
@@ -277,7 +277,7 @@ void __tick_nohz_task_switch(void)
 /* Parse the boot-time nohz CPU list from the kernel parameters. */
 static int __init tick_nohz_full_setup(char *str)
 {
-	alloc_bootmem_cpumask_var(&tick_nohz_full_mask);
+	zalloc_bootmem_cpumask_var(&tick_nohz_full_mask);
 	if (cpulist_parse(str, tick_nohz_full_mask) < 0) {
 		pr_warning("NOHZ: Incorrect nohz_full cpumask\n");
 		free_bootmem_cpumask_var(tick_nohz_full_mask);
diff --git a/lib/cpumask.c b/lib/cpumask.c
index 415041e9cda6..cb9b80284274 100644
--- a/lib/cpumask.c
+++ b/lib/cpumask.c
@@ -97,7 +97,7 @@ bool zalloc_cpumask_var(cpumask_var_t *mask, gfp_t flags)
 EXPORT_SYMBOL(zalloc_cpumask_var);
 
 /**
- * alloc_bootmem_cpumask_var - allocate a struct cpumask from the bootmem arena.
+ * zalloc_bootmem_cpumask_var - allocate a struct cpumask from bootmem.
  * @mask: pointer to cpumask_var_t where the cpumask is returned
  *
  * Only defined when CONFIG_CPUMASK_OFFSTACK=y, otherwise is
@@ -105,7 +105,7 @@ EXPORT_SYMBOL(zalloc_cpumask_var);
  * Either returns an allocated (zero-filled) cpumask, or causes the
  * system to panic.
  */
-void __init alloc_bootmem_cpumask_var(cpumask_var_t *mask)
+void __init zalloc_bootmem_cpumask_var(cpumask_var_t *mask)
 {
 	*mask = memblock_virt_alloc(cpumask_size(), 0);
 }
@@ -123,7 +123,7 @@ void free_cpumask_var(cpumask_var_t mask)
 EXPORT_SYMBOL(free_cpumask_var);
 
 /**
- * free_bootmem_cpumask_var - frees result of alloc_bootmem_cpumask_var
+ * free_bootmem_cpumask_var - frees result of zalloc_bootmem_cpumask_var
  * @mask: cpumask to free
  */
 void __init free_bootmem_cpumask_var(cpumask_var_t mask)
-- 
2.5.0