Hi John,
>cacheflush man page states that cacheflush() will set EINVAL if cache
>parameter is not one of ICACHE, DCACHE, or BCACHE.
>In order to confirm this behavior, I have executed the below listed
>program (cacheflush_check.c) in Toshiba RBTX4937 board (MIPS) with
>2.6.29.1 kernel.
I picked up this test program written by you and ported the same to LTP
under GPL. It would be great if you do not have any objection in
contributing this test to LTP. The below patch does exactly that.
Original-Author: Maxin John <[email protected]>,
Ported-To-LTP-By: Manas K Nayak <[email protected]>,
---
--- ltp-full-20090331.orig/testcases/kernel/syscalls/cacheflush/cacheflush01.c
1970-01-01 05:30:00.000000000 +0530
+++ ltp-full-20090331/testcases/kernel/syscalls/cacheflush/cacheflush01.c
2009-04-13 17:33:00.000000000 +0530
@@ -0,0 +1,192 @@
+/******************************************************************************/
+/* Copyright (c) Maxin John <[email protected]>, 2009
*/
+/* LKML Reference: http://lkml.org/lkml/2009/4/9/203
*/
+/* 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
*/
+/*
*/
+/******************************************************************************/
+/******************************************************************************/
+/*
*/
+/* File: cacheflush01.c
*/
+/*
*/
+/* Description: The cacheflush_check() syscall
*/
+/* Tests EINVAL error of cacheflush system call.
*/
+/* Its expected behaviour is cacheflush() should return -EINVAL */
+/* when cache parameter is not one of ICACHE, DCACHE, or BCACHE. */
+/*
*/
+/* Usage: <for command-line>
*/
+/* cacheflush01 [-c n] [-e][-i n] [-I x] [-p x] [-t]
*/
+/* where, -c n : Run n copies concurrently.
*/
+/* -e : Turn on errno logging.
*/
+/* -i n : Execute test n times.
*/
+/* -I x : Execute test for x seconds.
*/
+/* -P x : Pause for x seconds between iterations.
*/
+/* -t : Turn on syscall timing.
*/
+/*
*/
+/* Total Tests: 1
*/
+/*
*/
+/* Test Name: cacheflush01
*/
+/******************************************************************************/
+
+#include <sys/syscall.h>
+#include <unistd.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h>
+
+#if defined __mips__
+#include <asm/cachectl.h>
+int cacheflush(char *addr, int nbytes, int cache)
+{
+Â Â Â Â return syscall(__NR_cacheflush, addr, nbytes, cache);
+}
+#endif /* __mips__ */
+
+#ifndef ICACHE
+#define ICACHE (1<<0) /* flush instruction cache */
+#endif
+#ifndef DCACHE
+#define DCACHE (1<<1) /* writeback and flush data cache */
+#endif
+#ifndef BCACHE
+#define BCACHE (ICACHE|DCACHE) /* flush both caches */
+#endif
+
+/* Harness Specific Incnude Files. */
+#include "test.h"
+#include "usctest.h"
+#include "linux_syscall_numbers.h"
+
+/* Extern Global Variables */
+extern int Tst_count; /* counter for tst_xxx routines. */
+extern char *TESTDIR; /* temporary dir created by tst_tmpdir() */
+
+/* Global Variables */
+char *TCID = "cacheflush01"; /* Test program identifier.*/
+int testno;
+int TST_TOTAL = 1; /* total number of tests in this file.
*/
+
+#if defined __mips__
+/* Extern Global Functions */
+/******************************************************************************/
+/*
*/
+/* Function: cleanup
*/
+/*
*/
+/* Description: Performs all one time clean up for this test on successful
*/
+/* completion, premature exit or failure. Closes all temporary
*/
+/* files, removes all temporary directories exits the test with
*/
+/* appropriate return code by calling tst_exit() function.
*/
+/*
*/
+/* Input: None.
*/
+/*
*/
+/* Output: None.
*/
+/*
*/
+/* Return: On failure - Exits calling tst_exit(). Non '0' return code.
*/
+/* On success - Exits calling tst_exit(). With '0' return code.
*/
+/*
*/
+/******************************************************************************/
+extern void cleanup() {
+ /* Remove tmp dir and all files in it */
+ TEST_CLEANUP;
+ tst_rmdir();
+
+ /* Exit with appropriate return code. */
+ tst_exit();
+}
+
+/* Local Functions */
+/******************************************************************************/
+/*
*/
+/* Function: setup
*/
+/*
*/
+/* Description: Performs all one time setup for this test. This function is
*/
+/* typically used to capture signals, create temporary dirs
*/
+/* and temporary files that may be used in the course of this
*/
+/* test.
*/
+/*
*/
+/* Input: None.
*/
+/*
*/
+/* Output: None.
*/
+/*
*/
+/* Return: On failure - Exits by calling cleanup().
*/
+/* On success - returns 0.
*/
+/*
*/
+/******************************************************************************/
+void setup() {
+ /* Capture signals if any */
+ /* Create temporary directories */
+ TEST_PAUSE;
+ tst_tmpdir();
+}
+
+int main(int ac, char **av) {
+
+ /* cacheflush man page states that cacheflush() is only
applicable to MIPS architecture */
+ char *addr = NULL;
+ int lc; /* loop counter */
+ char *msg; /* message returned from parse_opts */
+
+ /* parse standard options */
+ if ((msg = parse_opts(ac, av, (option_t *)NULL, NULL)) != (char
*)NULL){
+ tst_brkm(TBROK, cleanup, "OPTION PARSING ERROR - %s", msg);
+ tst_exit();
+ }
+
+ setup();
+
+ /* Check looping state if -i option given */
+ for (lc = 0; TEST_LOOPING(lc); ++lc) {
+ Tst_count = 0;
+ for (testno = 0; testno < TST_TOTAL; ++testno) {
+ /* Create some user address range */
+ addr = malloc(getpagesize());
+ if (addr == NULL) {
+ tst_resm(TFAIL, "%s, Malloc error errno = %d :
%s",TCID, TEST_ERRNO, strerror(TEST_ERRNO));
+ cleanup();
+ tst_exit();
+ }
+
+ /* Invokes cacheflush() with proper parameters */
+ TEST(cacheflush(addr, getpagesize(), ICACHE));
+ TEST(cacheflush(addr, getpagesize(), DCACHE));
+ TEST(cacheflush(addr, getpagesize(), BCACHE));
+
+ /* Tests whether cacheflush() returns -EINVAL */
+ TEST(cacheflush(addr, getpagesize(), 0));
+ if(TEST_RETURN < 0){
+ if (TEST_ERRNO == EINVAL) {
+ tst_resm(TPASS, "%s PASS -with expected errno =
%d : %s\n", TCID, TEST_ERRNO, strerror(TEST_ERRNO));
+ cleanup();
+ tst_exit();
+ } else {
+ tst_resm(TFAIL, "%s FAIL -with unexpected errno
= %d : %s\n", TCID, TEST_ERRNO, strerror(TEST_ERRNO));
+ cleanup();
+ tst_exit();
+ }
+ }
+ tst_resm(TFAIL, "%s FAIL -with unexpected errno = %d :
%s\n", TCID, TEST_ERRNO, strerror(TEST_ERRNO));
+ cleanup();
+ }
+
+ }
+ tst_exit();
+}
+
+#else
+int main(int ac, char **av) {
+
+ tst_resm(TCONF, "is not available for this architecture");
+ tst_exit();
+}
+#endif
--- ltp-full-20090331.orig/testcases/kernel/syscalls/cacheflush/Makefile
1970-01-01 05:30:00.000000000 +0530
+++ ltp-full-20090331/testcases/kernel/syscalls/cacheflush/Makefile
2009-04-13 17:16:11.000000000 +0530
@@ -0,0 +1,31 @@
+#
+# Copyright (c) International Business Machines Corp., 2009
+#
+# 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., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+#
+
+CFLAGS += -I../../../../include -Wall
+LDLIBS += -L../../../../lib -lltp
+
+SRCS = $(wildcard *.c)
+TARGETS = $(patsubst %.c,%,$(SRCS))
+
+all: $(TARGETS)
+
+install:
+ @set -e; for i in $(TARGETS); do ln -f $$i ../../../bin/$$i ; done
+
+clean:
+ rm -f $(TARGETS)
--- ltp-full-20090331.orig/runtest/syscalls 2009-04-13 17:43:04.000000000
+0530
+++ ltp-full-20090331/runtest/syscalls 2009-04-13 17:35:46.000000000 +0530
@@ -36,6 +36,8 @@ capget02 capget02
capset01 capset01
capset02 capset02
+cacheflush01 cacheflush01
+
chdir01 chdir01
chdir01A symlink01 -T chdir01
chdir02 chdir02
---
Regards--
Manas
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