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1 files changed, 26 insertions, 0 deletions

diff --git a/examples/small_demos/kmalloc2.stp b/examples/small_demos/kmalloc2.stp
new file mode 100755
index 00000000..2622dd2f
--- /dev/null
+++ b/examples/small_demos/kmalloc2.stp
@@ -0,0 +1,26 @@
+#! /usr/bin/env stap
+
+# Using statistics and maps to examine kernel memory allocations
+
+global kmalloc
+
+probe kernel.function("__kmalloc") { 
+	kmalloc[execname()] <<< $size
+}
+
+# Exit after 10 seconds
+probe timer.ms(10000) { exit () }
+
+probe end {
+	foreach ([name] in kmalloc) {
+		printf("Allocations for %s\n", name)
+		printf("Count:   %d allocations\n", @count(kmalloc[name]))
+		printf("Sum:     %d Kbytes\n", @sum(kmalloc[name])/1000)
+		printf("Average: %d bytes\n", @avg(kmalloc[name]))
+		printf("Min:     %d bytes\n", @min(kmalloc[name]))
+		printf("Max:     %d bytes\n", @max(kmalloc[name]))	
+		print("\nAllocations by size in bytes\n")
+		print(@hist_log(kmalloc[name]))
+		printf("-------------------------------------------------------\n\n");
+	}
+}