* [LTP] [PATCH v3] Fix wqueue09 according with 5.17 kernel updates
@ 2022-04-12 12:41 Andrea Cervesato
2022-04-14 15:44 ` Petr Vorel
0 siblings, 1 reply; 3+ messages in thread
From: Andrea Cervesato @ 2022-04-12 12:41 UTC (permalink / raw)
To: ltp
Kernel 5.17 introduced many changes in the watch_queue support. In
particular, commit 3b4c0371928c17af03e8397ac842346624017ce6 changes the
behaviour of IOC_WATCH_QUEUE_SET_SIZE and ioctl control over watch_queue
buffer size: now we need to generate more events than before. In
particular, more than the bitmap size to the number of notes.
Signed-off-by: Andrea Cervesato <andrea.cervesato@suse.de>
---
This patch fixes the issue of loosing events on big number of iterations
such as -i 1000 by introducing also setup/cleanup.
testcases/kernel/watchqueue/wqueue09.c | 32 ++++++++++++++++++--------
1 file changed, 23 insertions(+), 9 deletions(-)
diff --git a/testcases/kernel/watchqueue/wqueue09.c b/testcases/kernel/watchqueue/wqueue09.c
index 55d567249..9f077b35b 100644
--- a/testcases/kernel/watchqueue/wqueue09.c
+++ b/testcases/kernel/watchqueue/wqueue09.c
@@ -11,11 +11,16 @@
#define _GNU_SOURCE
+#include <unistd.h>
#include "tst_test.h"
#include "lapi/keyctl.h"
#include "common.h"
+#define WATCH_QUEUE_NOTE_SIZE 128
+
static int data_lost;
+static key_serial_t key;
+static int fd;
static void saw_data_loss(struct watch_notification *n,
LTP_ATTRIBUTE_UNUSED size_t len, unsigned int wtype)
@@ -27,29 +32,38 @@ static void saw_data_loss(struct watch_notification *n,
data_lost = 1;
}
-static void run(void)
+static void setup(void)
{
- int fd;
- key_serial_t key;
-
fd = wqueue_watch(1, &wqueue_filter);
-
key = wqueue_add_key(fd);
- keyctl(KEYCTL_UPDATE, key, "b", 1);
- keyctl(KEYCTL_REVOKE, key);
+}
+
+static void run(void)
+{
+ int i, iterations;
+
+ iterations = (getpagesize() / WATCH_QUEUE_NOTE_SIZE) * 2;
+ for (i = 0; i < iterations; i++)
+ keyctl(KEYCTL_UPDATE, key, "b", 1);
data_lost = 0;
while (!data_lost)
wqueue_consumer(fd, saw_data_loss);
- SAFE_CLOSE(fd);
-
if (data_lost)
tst_res(TPASS, "Meta loss notification received");
else
tst_res(TFAIL, "Event not recognized");
}
+static void cleanup(void)
+{
+ keyctl(KEYCTL_REVOKE, key);
+ SAFE_CLOSE(fd);
+}
+
static struct tst_test test = {
.test_all = run,
+ .setup = setup,
+ .cleanup = cleanup,
};
--
2.35.1
--
Mailing list info: https://lists.linux.it/listinfo/ltp
^ permalink raw reply related [flat|nested] 3+ messages in thread
* Re: [LTP] [PATCH v3] Fix wqueue09 according with 5.17 kernel updates
2022-04-12 12:41 [LTP] [PATCH v3] Fix wqueue09 according with 5.17 kernel updates Andrea Cervesato
@ 2022-04-14 15:44 ` Petr Vorel
2022-04-19 5:54 ` Petr Vorel
0 siblings, 1 reply; 3+ messages in thread
From: Petr Vorel @ 2022-04-14 15:44 UTC (permalink / raw)
To: Andrea Cervesato; +Cc: ltp
Hi Andrea,
Reviewed-by: Petr Vorel <pvorel@suse.cz>
Tested-by: Petr Vorel <pvorel@suse.cz>
Thanks a lot!
Kind regards,
Petr
--
Mailing list info: https://lists.linux.it/listinfo/ltp
^ permalink raw reply [flat|nested] 3+ messages in thread
* Re: [LTP] [PATCH v3] Fix wqueue09 according with 5.17 kernel updates
2022-04-14 15:44 ` Petr Vorel
@ 2022-04-19 5:54 ` Petr Vorel
0 siblings, 0 replies; 3+ messages in thread
From: Petr Vorel @ 2022-04-19 5:54 UTC (permalink / raw)
To: Andrea Cervesato, ltp
Hi Andrea,
Merged. Thanks!
Kind regards,
Petr
--
Mailing list info: https://lists.linux.it/listinfo/ltp
^ permalink raw reply [flat|nested] 3+ messages in thread
end of thread, other threads:[~2022-04-19 5:55 UTC | newest]
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2022-04-12 12:41 [LTP] [PATCH v3] Fix wqueue09 according with 5.17 kernel updates Andrea Cervesato
2022-04-14 15:44 ` Petr Vorel
2022-04-19 5:54 ` Petr Vorel
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