netdev - [PATCH 03/17] idr test suite: Fix ida_test

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Message-Id: <20171128213312.28983-4-willy@infradead.org>
Date:   Tue, 28 Nov 2017 13:32:58 -0800
From:   Matthew Wilcox <willy@...radead.org>
To:     unlisted-recipients:; (no To-header on input)
Cc:     Matthew Wilcox <mawilcox@...rosoft.com>,
        Chris Mi <chrism@...lanox.com>, Jiri Pirko <jiri@...lanox.com>,
        "David S . Miller" <davem@...emloft.net>,
        Cong Wang <xiyou.wangcong@...il.com>,
        Jamal Hadi Salim <jhs@...atatu.com>,
        Daniel Borkmann <daniel@...earbox.net>,
        Eric Biggers <ebiggers@...gle.com>,
        Lai Jiangshan <laijs@...fujitsu.com>,
        Tejun Heo <tj@...nel.org>, Rehas Sachdeva <aquannie@...il.com>,
        netdev@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 03/17] idr test suite: Fix ida_test_random()

From: Matthew Wilcox <mawilcox@...rosoft.com>

The test was checking the wrong errno; ida_get_new_above() returns
EAGAIN, not ENOMEM on memory allocation failure.  Double the number of
threads to increase the chance that we actually exercise this path
during the test suite (it was a bit sporadic before).

Signed-off-by: Matthew Wilcox <mawilcox@...rosoft.com>
---
 tools/testing/radix-tree/idr-test.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/tools/testing/radix-tree/idr-test.c b/tools/testing/radix-tree/idr-test.c
index 30cd0b296f1a..193450b29bf0 100644
--- a/tools/testing/radix-tree/idr-test.c
+++ b/tools/testing/radix-tree/idr-test.c
@@ -380,7 +380,7 @@ void ida_check_random(void)
 			do {
 				ida_pre_get(&ida, GFP_KERNEL);
 				err = ida_get_new_above(&ida, bit, &id);
-			} while (err == -ENOMEM);
+			} while (err == -EAGAIN);
 			assert(!err);
 			assert(id == bit);
 		}
@@ -489,7 +489,7 @@ static void *ida_random_fn(void *arg)
 
 void ida_thread_tests(void)
 {
-	pthread_t threads[10];
+	pthread_t threads[20];
 	int i;
 
 	for (i = 0; i < ARRAY_SIZE(threads); i++)
-- 
2.15.0