iosched_bugs: delete unused test
BUG=b:187792785
TEST=CQ passes
Change-Id: Id91fd8834392fad338c3211269e6750b9b164fe9
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/third_party/autotest/+/2917223
Commit-Queue: Mike Frysinger <vapier@chromium.org>
Tested-by: Mike Frysinger <vapier@chromium.org>
Reviewed-by: Derek Beckett <dbeckett@chromium.org>
diff --git a/client/tests/iosched_bugs/control b/client/tests/iosched_bugs/control
deleted file mode 100644
index 41615b7..0000000
--- a/client/tests/iosched_bugs/control
+++ /dev/null
@@ -1,16 +0,0 @@
-NAME = "iosched bugs"
-AUTHOR = "Divyesh Shah (dpshah@google.com)"
-TEST_TYPE = "client"
-TEST_CLASS = "Kernel"
-TEST_CATEGORY = "Functional"
-TIME = "SHORT"
-DOC = """\
-This is a functional test for the bug in AS io scheduler where
-reads or writes can be starved when switching a batch and a request from the
-previous batch is still in-flight. This test case should see writes being
-starved forever without the bugfix(220.4 and earlier kernels) and with the
-bugfix it should see the writer making forward progress.
-"""
-
-
-job.run_test('iosched_bugs')
diff --git a/client/tests/iosched_bugs/iosched_bugs.py b/client/tests/iosched_bugs/iosched_bugs.py
deleted file mode 100644
index f919fcc..0000000
--- a/client/tests/iosched_bugs/iosched_bugs.py
+++ /dev/null
@@ -1,43 +0,0 @@
-import os, time
-import subprocess
-from autotest_lib.client.bin import test
-from autotest_lib.client.common_lib import utils, error
-
-
-class iosched_bugs(test.test):
- version = 1
- preserve_srcdir = True
-
- def initialize(self):
- self.job.require_gcc()
-
-
- def setup(self):
- os.chdir(self.srcdir)
- utils.make()
-
-
- def execute(self):
- os.chdir(self.tmpdir)
- (p1, _) = utils.run_bg('dd if=/dev/hda3 of=/dev/null')
- time.sleep(60)
- blah = os.path.join(self.tmpdir, 'blah')
- dirty_bin = os.path.join(self.srcdir, 'dirty')
- dirty_op = os.path.join(self.tmpdir, 'dirty')
- utils.system('echo AA > ' + blah)
- p2 = subprocess.Popen(dirty_bin + ' ' + blah + ' 1 > ' + dirty_op,
- shell=True)
- time.sleep(600)
- if p2.poll() is None:
- utils.nuke_subprocess(p1)
- utils.nuke_subprocess(p2)
- raise error.TestFail('Writes made no progress')
-# Commenting out use of utils.run as there is a timeout bug
-#
-# try:
-# utils.run(dirty_bin + ' ' + blah + '1 > ' + dirty_op, 900, False,
-# None, None)
-# except:
-# utils.nuke_subprocess(p1)
-# raise error.TestFail('Writes made no progress')
- utils.nuke_subprocess(p1)
diff --git a/client/tests/iosched_bugs/src/Makefile b/client/tests/iosched_bugs/src/Makefile
deleted file mode 100644
index da205b0..0000000
--- a/client/tests/iosched_bugs/src/Makefile
+++ /dev/null
@@ -1,8 +0,0 @@
-CC=gcc
-
-TESTS=dirty
-
-all: $(TESTS)
-
-dirty: dirty.c
- $(CC) -o $@ $^
diff --git a/client/tests/iosched_bugs/src/dirty.c b/client/tests/iosched_bugs/src/dirty.c
deleted file mode 100644
index 0ed32b6..0000000
--- a/client/tests/iosched_bugs/src/dirty.c
+++ /dev/null
@@ -1,60 +0,0 @@
-// Author: Suleiman Souhlal (suleiman@google.com)
-
-#include <stdio.h>
-#include <err.h>
-#include <stdint.h>
-#include <sys/types.h>
-#include <sys/stat.h>
-#include <sys/mman.h>
-#include <fcntl.h>
-
-#define O_NOATIME 01000000
-
-inline uint64_t
-rdtsc(void)
-{
- int64_t tsc;
-
- __asm __volatile("rdtsc" : "=A" (tsc));
- return (tsc);
-}
-
-int
-main(int argc, char **argv)
-{
- struct stat st;
- uint64_t e, s, t;
- char *p, q;
- long i;
- int fd;
-
- if (argc < 2) {
- printf("Usage: %s <file>\n", argv[0]);
- return (1);
- }
-
- if ((fd = open(argv[1], O_RDWR | O_NOATIME)) < 0)
- err(1, "open");
-
- if (fstat(fd, &st) < 0)
- err(1, "fstat");
-
- p = mmap(NULL, st.st_size, PROT_READ | PROT_WRITE, MAP_SHARED, fd, 0);
-
- t = 0;
- for (i = 0; i < 1000; i++) {
- *p = 0;
- msync(p, 4096, MS_SYNC);
- s = rdtsc();
- *p = 0;
- __asm __volatile(""::: "memory");
- e = rdtsc();
- if (argc > 2)
- printf("%d: %lld cycles %jd %jd\n", i, e - s, (intmax_t)s, (intmax_t)e);
- t += e - s;
- }
-
- printf("average time: %lld cycles\n", t / 1000);
-
- return (0);
-}
