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[94.245.46.61]) by smtp.gmail.com with ESMTPSA id n17sm257111lfe.0.2021.04.06.05.45.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 06 Apr 2021 05:45:45 -0700 (PDT) From: "Uladzislau Rezki (Sony)" To: Andrew Morton Cc: linux-mm@kvack.org, LKML , Uladzislau Rezki , Hillf Danton , Michal Hocko , Matthew Wilcox , Oleksiy Avramchenko , Steven Rostedt Subject: [PATCH-next 1/1] lib/test_vmalloc.c: extend max value of nr_threads parameter Date: Tue, 6 Apr 2021 14:45:36 +0200 Message-Id: <20210406124536.19658-1-urezki@gmail.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Currently a maximum value is set to 1024 workers the user can create during the test. It might be that for some big systems it is not enough. Since it is a test thing we can give testers more flexibility. Increase that number till USHRT_MAX that corresponds to 65535. Signed-off-by: Uladzislau Rezki (Sony) --- lib/test_vmalloc.c | 12 ++++++------ 1 file changed, 6 insertions(+), 6 deletions(-) diff --git a/lib/test_vmalloc.c b/lib/test_vmalloc.c index d337985e4c5e..01e9543de566 100644 --- a/lib/test_vmalloc.c +++ b/lib/test_vmalloc.c @@ -24,7 +24,7 @@ MODULE_PARM_DESC(name, msg) \ __param(int, nr_threads, 0, - "Number of workers to perform tests(min: 1 max: 1024)"); + "Number of workers to perform tests(min: 1 max: USHRT_MAX)"); __param(bool, sequential_test_order, false, "Use sequential stress tests order"); @@ -469,13 +469,13 @@ init_test_configurtion(void) { /* * A maximum number of workers is defined as hard-coded - * value and set to 1024. We add such gap just in case - * and for potential heavy stressing. + * value and set to USHRT_MAX. We add such gap just in + * case and for potential heavy stressing. */ - nr_threads = clamp(nr_threads, 1, 1024); + nr_threads = clamp(nr_threads, 1, (int) USHRT_MAX); /* Allocate the space for test instances. */ - tdriver = kcalloc(nr_threads, sizeof(*tdriver), GFP_KERNEL); + tdriver = kvcalloc(nr_threads, sizeof(*tdriver), GFP_KERNEL); if (tdriver == NULL) return -1; @@ -555,7 +555,7 @@ static void do_concurrent_test(void) i, t->stop - t->start); } - kfree(tdriver); + kvfree(tdriver); } static int vmalloc_test_init(void) -- 2.20.1