From: Junchang Wang <junchangwang@gmail.com>
To: perfbook@vger.kernel.org, paulmck@linux.vnet.ibm.com
Cc: Junchang Wang <junchangwang@gmail.com>
Subject: [PATCH 2/2] routetorture.h: Switch from ACCESS_ONCE() to READ_ONCE()/WRITE_ONCE()
Date: Thu, 8 Jun 2017 11:16:33 +0800 [thread overview]
Message-ID: <1496891793-5755-3-git-send-email-junchangwang@gmail.com> (raw)
In-Reply-To: <1496891793-5755-1-git-send-email-junchangwang@gmail.com>
Signed-off-by: Junchang Wang <junchangwang@gmail.com>
---
CodeSamples/defer/routetorture.h | 16 ++++++++--------
1 file changed, 8 insertions(+), 8 deletions(-)
diff --git a/CodeSamples/defer/routetorture.h b/CodeSamples/defer/routetorture.h
index 86693e9..b0d642a 100644
--- a/CodeSamples/defer/routetorture.h
+++ b/CodeSamples/defer/routetorture.h
@@ -104,7 +104,7 @@ void *perftest_reader(void *arg)
/* Announce our presence and enter the test loop. */
atomic_inc(&nthreads_running);
for (;;) {
- gf = ACCESS_ONCE(goflag);
+ gf = READ_ONCE(goflag);
if (gf != GOFLAG_RUN) {
if (gf == GOFLAG_STOP)
break;
@@ -149,7 +149,7 @@ void perftest(void)
pap = malloc(sizeof(*pap) * nreaders);
BUG_ON(pap == NULL);
atomic_set(&nthreads_running, 0);
- goflag = GOFLAG_INIT;
+ WRITE_ONCE(goflag, GOFLAG_INIT);
/* Populate route table. */
for (i = 0; i < nelems; i++)
@@ -173,9 +173,9 @@ void perftest(void)
/* Run the test. */
starttime = get_microseconds();
- ACCESS_ONCE(goflag) = GOFLAG_RUN;
+ WRITE_ONCE(goflag, GOFLAG_RUN);
poll(NULL, 0, duration);
- ACCESS_ONCE(goflag) = GOFLAG_STOP;
+ WRITE_ONCE(goflag, GOFLAG_STOP);
starttime = get_microseconds() - starttime;
wait_all_threads();
@@ -225,7 +225,7 @@ void *stresstest_updater(void *arg)
/* Announce our presence and enter the test loop. */
atomic_inc(&nthreads_running);
for (;;) {
- gf = ACCESS_ONCE(goflag);
+ gf = READ_ONCE(goflag);
if (gf != GOFLAG_RUN) {
if (gf == GOFLAG_STOP)
break;
@@ -286,7 +286,7 @@ void stresstest(void)
pap = malloc(sizeof(*pap) * nupdaters);
BUG_ON(pap == NULL);
atomic_set(&nthreads_running, 0);
- goflag = GOFLAG_INIT;
+ WRITE_ONCE(goflag, GOFLAG_INIT);
for (i = 0; i < nupdaters; i++) {
pap[i].myid = i;
@@ -306,9 +306,9 @@ void stresstest(void)
/* Run the test. */
starttime = get_microseconds();
- ACCESS_ONCE(goflag) = GOFLAG_RUN;
+ WRITE_ONCE(goflag, GOFLAG_RUN);
poll(NULL, 0, duration);
- ACCESS_ONCE(goflag) = GOFLAG_STOP;
+ WRITE_ONCE(goflag, GOFLAG_STOP);
starttime = get_microseconds() - starttime;
wait_all_threads();
--
2.7.4
next prev parent reply other threads:[~2017-06-08 3:16 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-06-08 3:16 [PATCH 0/2] Patches to chapter Deferred Processing Junchang Wang
2017-06-08 3:16 ` [PATCH 1/2] routetorture.h: Fix typos in help messages Junchang Wang
2017-06-08 3:16 ` Junchang Wang [this message]
2017-06-08 3:38 ` [PATCH 0/2] Patches to chapter Deferred Processing Paul E. McKenney
2017-06-08 4:30 ` Junchang Wang
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=1496891793-5755-3-git-send-email-junchangwang@gmail.com \
--to=junchangwang@gmail.com \
--cc=paulmck@linux.vnet.ibm.com \
--cc=perfbook@vger.kernel.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.