This patch adds the migrate_pages test command to test that
a task's pages can be moved with move_pages(2).

Diffed against numactl-1.0.2

Signed-off-by: Christoph Lameter<clameter@sgi.com>
---
 Makefile             |    6 +-
 test/migrate_pages.c |  124 +++++++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 128 insertions(+), 2 deletions(-)

Index: numactl-1.0.2/test/migrate_pages.c
===================================================================
--- /dev/null
+++ numactl-1.0.2/test/migrate_pages.c
@@ -0,0 +1,124 @@
+/*
+ * Test program to test the moving of a processes pages.
+ *
+ * (C) 2006 Silicon Graphics, Inc.
+ *		Christoph Lameter <clameter@sgi.com>
+ */
+#include <stdio.h>
+#include <stdlib.h>
+#include "../numa.h"
+#include <unistd.h>
+#include <errno.h>
+
+unsigned int pagesize;
+unsigned int page_count = 32;
+
+char *page_base;
+char *pages;
+
+void **addr;
+int *status;
+int *nodes;
+int errors;
+int nr_nodes;
+
+nodemask_t old_nodes;
+nodemask_t new_nodes;
+
+int main(int argc, char **argv)
+{
+	int i, rc;
+
+	pagesize = getpagesize();
+
+	nr_nodes = numa_max_node();
+
+	old_nodes = numa_no_nodes;
+	new_nodes = numa_no_nodes;
+	nodemask_set(&old_nodes, 1);
+	nodemask_set(&new_nodes, 0);
+	if (nr_nodes < 2) {
+		printf("A minimum of 2 nodes is required for this test.\n");
+		exit(1);
+	}
+
+	setbuf(stdout, NULL);
+	printf("migrate_pages() test ......\n");
+	if (argc > 1)
+		sscanf(argv[1], "%d", &page_count);
+
+	page_base = malloc((pagesize + 1) * page_count);
+	addr = malloc(sizeof(char *) * page_count);
+	status = malloc(sizeof(int *) * page_count);
+	nodes = malloc(sizeof(int *) * page_count);
+	if (!page_base || !addr || !status || !nodes) {
+		printf("Unable to allocate memory\n");
+		exit(1);
+	}
+
+	pages = (void *) ((((long)page_base) & ~((long)(pagesize - 1))) + pagesize);
+
+	for (i = 0; i < page_count; i++) {
+		if (i != 2)
+			/* We leave page 2 unallocated */
+			pages[ i * pagesize ] = (char) i;
+		addr[i] = pages + i * pagesize;
+		nodes[i] = 1;
+		status[i] = -123;
+	}
+
+	/* Move to starting node */
+	rc = numa_move_pages(0, page_count, addr, nodes, status, 0);
+	if (rc < 0 && errno != ENOENT) {
+		perror("move_pages");
+		exit(1);
+	}
+
+	/* Verify correct startup locations */
+	printf("Page location at the beginning of the test\n");
+	printf("------------------------------------------\n");
+
+	numa_move_pages(0, page_count, addr, NULL, status, 0);
+	for (i = 0; i < page_count; i++) {
+		printf("Page %d vaddr=%p node=%d\n", i, pages + i * pagesize, status[i]);
+		if (i != 2 && status[i] != 1) {
+			printf("Bad page state before migrate_pages. Page %d status %d\n",i, status[i]);
+			exit(1);
+		}
+	}
+
+	/* Move to node zero */
+	numa_move_pages(0, page_count, addr, nodes, status, 0);
+
+	printf("\nMigrating the current processes pages ...\n");
+	rc = numa_migrate_pages(0, &old_nodes, &new_nodes);
+
+	if (rc < 0) {
+		perror("numa_migrate_pages failed");
+		errors++;
+	}
+
+	/* Get page state after migration */
+	numa_move_pages(0, page_count, addr, NULL, status, 0);
+	for (i = 0; i < page_count; i++) {
+		printf("Page %d vaddr=%lx node=%d\n", i,
+			(unsigned long)(pages + i * pagesize), status[i]);
+		if (i != 2) {
+			if (pages[ i* pagesize ] != (char) i) {
+				printf("*** Page contents corrupted.\n");
+				errors++;
+			} else if (status[i]) {
+				printf("*** Page on the wrong node\n");
+				errors++;
+			}
+		}
+	}
+
+	if (!errors)
+		printf("Test successful.\n");
+	else
+		printf("%d errors.\n", errors);
+
+	return errors > 0 ? 1 : 0;
+}
+
Index: numactl-1.0.2/Makefile
===================================================================
--- numactl-1.0.2.orig/Makefile
+++ numactl-1.0.2/Makefile
@@ -23,7 +23,7 @@ CLEANFILES := numactl.o libnuma.o numact
 	      test/mynode test/ftok test/prefered test/randmap \
 	      .depend .depend.X test/nodemap test/distance test/tbitmap \
 	      test/after test/before threadtest test_move_pages \
-	      test/mbind_mig_pages \
+	      test/mbind_mig_pages test/migrate_pages \
 	      migratepages migspeed
 SOURCES := bitops.c libnuma.c distance.c memhog.c numactl.c numademo.c \
 	numamon.c shm.c stream_lib.c stream_main.c syscall.c util.c mt.c \
@@ -36,7 +36,7 @@ docdir := ${prefix}/share/doc
 all: numactl migratepages migspeed libnuma.so numademo numamon memhog \
      test/tshared stream test/mynode test/pagesize test/ftok test/prefered \
      test/randmap test/nodemap test/distance test/tbitmap test/move_pages \
-     test/mbind_mig_pages
+     test/mbind_mig_pages test/migrate_pages
 
 numactl: numactl.o util.o shm.o bitops.o libnuma.so
 
@@ -102,6 +102,8 @@ test/move_pages: test/move_pages.c libnu
 
 test/mbind_mig_pages: test/mbind_mig_pages.c libnuma.so
 
+test/migrate_pages: test/migrate_pages.c libnuma.so
+
 .PHONY: install all clean html depend
 
 MANLINKS := \
