kernel: mm: rename z_num_pagefaults_get to k_mem_num_*

This is part of a series of moving memory management related
stuff out of the Z_ namespace and into its own namespace.

Signed-off-by: Daniel Leung <daniel.leung@intel.com>

kernel/include/mmu.h

@@ -356,7 +356,7 @@ void k_mem_page_frames_dump(void);
  *
  * @return Number of successful page faults
  */
-unsigned long z_num_pagefaults_get(void);
+unsigned long k_mem_num_pagefaults_get(void);
 
 /**
  * Free a page frame physical address by evicting its contents

kernel/paging/statistics.c

@@ -76,7 +76,7 @@ k_mem_paging_backing_store_histogram_bounds[
 #endif /* CONFIG_DEMAND_PAGING_STATS_USING_TIMING_FUNCTIONS */
 #endif /* CONFIG_DEMAND_PAGING_TIMING_HISTOGRAM */
 
-unsigned long z_num_pagefaults_get(void)
+unsigned long k_mem_num_pagefaults_get(void)
 {
 	unsigned long ret;
 	unsigned int key;

tests/kernel/mem_protect/demand_paging/src/main.c

@@ -121,7 +121,7 @@ ZTEST(demand_paging, test_touch_anon_pages)
 	struct k_mem_paging_stats_t stats;
 	k_tid_t tid = k_current_get();
 
-	faults = z_num_pagefaults_get();
+	faults = k_mem_num_pagefaults_get();
 
 	printk("checking zeroes\n");
 	/* The mapped area should have started out zeroed. Check this. */
@@ -145,7 +145,7 @@ ZTEST(demand_paging, test_touch_anon_pages)
 			      i, &arena[i], arena[i], nums[i % 10]);
 	}
 
-	faults = z_num_pagefaults_get() - faults;
+	faults = k_mem_num_pagefaults_get() - faults;
 
 	/* Specific number depends on how much RAM we have but shouldn't be 0 */
 	zassert_not_equal(faults, 0UL, "no page faults handled?");
@@ -201,7 +201,7 @@ static void test_k_mem_page_out(void)
 	 * are measuring stuff
 	 */
 	key = irq_lock();
-	faults = z_num_pagefaults_get();
+	faults = k_mem_num_pagefaults_get();
 	ret = k_mem_page_out(arena, HALF_BYTES);
 	zassert_equal(ret, 0, "k_mem_page_out failed with %d", ret);
 
@@ -209,7 +209,7 @@ static void test_k_mem_page_out(void)
 	for (size_t i = 0; i < HALF_BYTES; i++) {
 		arena[i] = nums[i % 10];
 	}
-	faults = z_num_pagefaults_get() - faults;
+	faults = k_mem_num_pagefaults_get() - faults;
 	irq_unlock(key);
 
 	zassert_equal(faults, HALF_PAGES,
@@ -236,12 +236,12 @@ ZTEST(demand_paging_api, test_k_mem_page_in)
 
 	k_mem_page_in(arena, HALF_BYTES);
 
-	faults = z_num_pagefaults_get();
+	faults = k_mem_num_pagefaults_get();
 	/* Write to the supposedly evicted region */
 	for (size_t i = 0; i < HALF_BYTES; i++) {
 		arena[i] = nums[i % 10];
 	}
-	faults = z_num_pagefaults_get() - faults;
+	faults = k_mem_num_pagefaults_get() - faults;
 	irq_unlock(key);
 
 	zassert_equal(faults, 0, "%d page faults when 0 expected",
@@ -262,11 +262,11 @@ ZTEST(demand_paging_api, test_k_mem_pin)
 
 	key = irq_lock();
 	/* Show no faults writing to the pinned area */
-	faults = z_num_pagefaults_get();
+	faults = k_mem_num_pagefaults_get();
 	for (size_t i = 0; i < HALF_BYTES; i++) {
 		arena[i] = nums[i % 10];
 	}
-	faults = z_num_pagefaults_get() - faults;
+	faults = k_mem_num_pagefaults_get() - faults;
 	irq_unlock(key);
 
 	zassert_equal(faults, 0, "%d page faults when 0 expected",
@@ -309,7 +309,7 @@ ZTEST(demand_paging_stat, test_backing_store_capacity)
 	zassert_is_null(ret, "k_mem_map shouldn't have succeeded");
 
 	key = irq_lock();
-	faults = z_num_pagefaults_get();
+	faults = k_mem_num_pagefaults_get();
 	/* Poke all anonymous memory */
 	for (size_t i = 0; i < HALF_BYTES; i++) {
 		arena[i] = nums[i % 10];
@@ -317,7 +317,7 @@ ZTEST(demand_paging_stat, test_backing_store_capacity)
 	for (size_t i = 0; i < size; i++) {
 		mem[i] = nums[i % 10];
 	}
-	faults = z_num_pagefaults_get() - faults;
+	faults = k_mem_num_pagefaults_get() - faults;
 	irq_unlock(key);
 
 	zassert_not_equal(faults, 0, "should have had some pagefaults");