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authorDenys Dmytriyenko <denis@denix.org>2009-03-17 14:32:59 -0400
committerDenys Dmytriyenko <denis@denix.org>2009-03-17 14:32:59 -0400
commit709c4d66e0b107ca606941b988bad717c0b45d9b (patch)
tree37ee08b1eb308f3b2b6426d5793545c38396b838 /packages/sccd/files/scc-disk.c
parentfa6cd5a3b993f16c27de4ff82b42684516d433ba (diff)
rename packages/ to recipes/ per earlier agreement
See links below for more details: http://thread.gmane.org/gmane.comp.handhelds.openembedded/21326 http://thread.gmane.org/gmane.comp.handhelds.openembedded/21816 Signed-off-by: Denys Dmytriyenko <denis@denix.org> Acked-by: Mike Westerhof <mwester@dls.net> Acked-by: Philip Balister <philip@balister.org> Acked-by: Khem Raj <raj.khem@gmail.com> Acked-by: Marcin Juszkiewicz <hrw@openembedded.org> Acked-by: Koen Kooi <koen@openembedded.org> Acked-by: Frans Meulenbroeks <fransmeulenbroeks@gmail.com>
Diffstat (limited to 'packages/sccd/files/scc-disk.c')
-rw-r--r--packages/sccd/files/scc-disk.c167
1 files changed, 0 insertions, 167 deletions
diff --git a/packages/sccd/files/scc-disk.c b/packages/sccd/files/scc-disk.c
deleted file mode 100644
index 4fd494203a..0000000000
--- a/packages/sccd/files/scc-disk.c
+++ /dev/null
@@ -1,167 +0,0 @@
-/*
- * Copyright (c) 2006
- * Protium Computing, Inc. All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. All advertising materials mentioning features or use of this software
- * must display the following acknowledgement:
- * This product includes software developed by Protium Computing, Inc.
- * 4. The name of Protium Computing, Inc. may not be used to endorse or
- * promote products derived from this software without specific prior
- * written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY PROTIUM COMPUTING ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL PROTIUM COMPUTING BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-#include <stdio.h>
-#include <fcntl.h>
-#include <unistd.h>
-#include <stdlib.h>
-#include <string.h>
-#include <strings.h>
-#include <errno.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/un.h>
-#include <sys/syslog.h>
-#include <sys/param.h>
-
-struct watch_table {
- char *wt_path;
- int wt_status;
- int wt_reads;
- int wt_writes;
-#define WT_INVALID 0
-#define WT_VALID 1
-#define WT_CHECK 2
-} iowt[] = {
- { "/sys/block/hda/stat", WT_CHECK, 0, 0},
- { "/sys/block/hdb/stat", WT_CHECK, 0, 0},
- { "/sys/block/hdc/stat", WT_CHECK, 0, 0},
- { "/sys/block/hdd/stat", WT_CHECK, 0, 0},
- { NULL, WT_INVALID, -1, -1}
-};
-
-/*
- * disk_activity() returns back the total number of read and writes done
- * by the devices listed in the io watch table since the last call to
- * disk_activity. The number of reads and writes are determined by
- * opening and reading each of the valid files listed in the io watch
- * table.The number of reads and writes are stored in the io watch table so
- * that the next call to this routine can compare the current number of read
- * and writes to those stored in the io watch table. The difference for
- * each device is summed in the activity variable. The routine lazy
- * evaluates the existance of the devices in the table.
- *
- * For the storcenter, we are only concerned with internal drives.
- *
- * The wt_path element must point at a diskstat file in the sysfs filesystem.
- * File format can be found at: /usr/src/linux/Documentation/iostats.txt
- * For this routine:
- * nr, nw - number read and writes
- * nmr, nmw - number of merged reads and writes
- * nsr, nsw - number of the sectors read and written
- * tr, tw - time spent reading and writing
- * nio - raw number of ios
- * tio, wtio - time spent and weighted time spent doing io
- */
-int
-disk_activity()
-{
- int activity = 0;
- char mesg[256];
- int rc, nr, nmr, nsr, tr, nw, nmw, nsw, tw, nio, tio, wtio;
- FILE *f;
-
- struct stat st;
- struct watch_table *w;
-
- for (w = iowt; w->wt_path; w++) {
- /*
- * If status ids set to check, do the lazy existence
- * evaluation. If stat fails set to invalid. Don't
- * worry about perms here.
- */
- if ((w->wt_status == WT_CHECK) &&
- (stat(w->wt_path, &st) < 0)) {
- sprintf(mesg, "%s not available", w->wt_path);
- syslog(LOG_INFO, mesg);
- w->wt_status = WT_INVALID;
- }
-
- /*
- * Short circuit the loop if invalid.
- */
- if (w->wt_status == WT_INVALID)
- continue;
-
- /*
- * If it can't be opened rdonly, set to invalid
- */
- if ((f = fopen(w->wt_path, "r")) < 0) {
- sprintf(mesg, "Unable to open %s, no longer watching",
- w->wt_path);
- syslog(LOG_INFO, mesg);
- w->wt_status = WT_INVALID;
- continue;
- }
-
- rc = fscanf(f, "%d %d %d %d %d %d %d %d %d %d %d",
- &nr, &nmr, &nsr, &tr,
- &nw, &nmw, &nsw, &tw,
- &nio, &tio, &wtio);
-
- fclose(f);
-
- if (rc != 11) {
- sprintf(mesg, "Unable to read %s", w->wt_path);
- syslog(LOG_INFO, mesg);
- continue;
- }
-
- /*
- * If we haven't seen any activity on this device before
- * then just save the values and go on. This, although
- * not strictly necessary, prevents the initial call to
- * disk_activity returning back the base set io activity.
- * Remember it takes two calls to get a true difference.
- */
- if ((w->wt_reads == 0) && (w->wt_writes == 0)) {
- w->wt_reads = nr;
- w->wt_writes = nw;
- continue;
- }
-
- activity += (nr - w->wt_reads);
- activity += (nw - w->wt_writes);
-
- w->wt_reads = nr;
- w->wt_writes = nw;
-
- /*
- printf("%s: %d %d %d %d %d %d %d %d %d %d %d\n",
- w->wt_path,
- nr, nmr, nsr, tr,
- nw, nmw, nsw, tw,
- nio, tio, wtio);
- */
- }
-
- return(activity);
-}