[PATCH] Add Alan's btt tool

1 files changed, 69 insertions, 0 deletions

diff --git a/btt/devmap.c b/btt/devmap.c
new file mode 100644
index 0000000..5de57e8
--- /dev/null
+++ b/btt/devmap.c
@@ -0,0 +1,69 @@
+/*
+ * blktrace output analysis: generate a timeline & gather statistics
+ *
+ * Copyright (C) 2006 Alan D. Brunelle <Alan.Brunelle@hp.com>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation; either version 2 of the License, or
+ *  (at your option) any later version.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program; if not, write to the Free Software
+ *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ *
+ */
+#include <stdio.h>
+
+#include "globals.h"
+struct devmap *all_devmaps = NULL;
+void dev_map_add(struct devmap *dmp)
+{
+	struct devmap *this = zmalloc(sizeof(*this));
+
+	*this = *dmp;
+	this->next = all_devmaps;
+	all_devmaps = this;
+}
+
+struct devmap *dev_map_find(__u32 device)
+{
+	char this[128];
+	struct devmap *dmp;
+
+	sprintf(this, "%u,%u", MAJOR(device), MINOR(device));
+	for (dmp = all_devmaps; dmp != NULL; dmp = dmp->next)
+		if (!strcmp(this, dmp->devno))
+			break;
+
+	return dmp;
+}
+
+int dev_map_read(char *fname)
+{
+	char line[256];
+	struct devmap dm;
+	FILE *fp = fopen(fname, "r");
+
+	if (!fp) {
+		perror(fname);
+		return 1;
+	}
+
+	while (fscanf(fp, "%255[a-zA-Z0-9 :.,/]\n", line) == 1) {
+		if (strstr(line, "Device") != NULL) continue;
+		if (sscanf(line, "%s %s %u %u %u %u %s %s %u %u %s",
+				&dm.device[0], &dm.model[0], &dm.host, &dm.bus,
+				&dm.target, &dm.lun, &dm.node[0], &dm.pci[0],
+				&dm.irq, &dm.cpu, &dm.devno[0]) != 11)
+			break;
+		dev_map_add(&dm);
+	}
+
+	return 0;
+}