kernel: mmu: demand paging execution time histogram
This adds the bits to record execution time of eviction selection,
and backing store page-in/page-out in histograms.
Signed-off-by: Daniel Leung <daniel.leung@intel.com>
diff --git a/kernel/include/kernel_internal.h b/kernel/include/kernel_internal.h
index 443e22f..d377d73 100644
--- a/kernel/include/kernel_internal.h
+++ b/kernel/include/kernel_internal.h
@@ -249,6 +249,22 @@
#endif
+#ifdef CONFIG_DEMAND_PAGING_TIMING_HISTOGRAM
+/**
+ * Initialize the timing histograms for demand paging.
+ */
+void z_paging_histogram_init(void);
+
+/**
+ * Increment the counter in the timing histogram.
+ *
+ * @param hist The timing histogram to be updated.
+ * @param cycles Time spent in measured operation.
+ */
+void z_paging_histogram_inc(struct k_mem_paging_histogram_t *hist,
+ uint32_t cycles);
+#endif /* CONFIG_DEMAND_PAGING_TIMING_HISTOGRAM */
+
#ifdef __cplusplus
}
#endif
