+ lib-test_vmallocc-add-a-new-nr_threads-parameter-fix.patch added to -mm tree

[akpm@linux-foundation.org]

The patch titled
     Subject: lib/test_vmalloc.c: extend max value of nr_threads parameter
has been added to the -mm tree.  Its filename is
     lib-test_vmallocc-add-a-new-nr_threads-parameter-fix.patch

This patch should soon appear at
    https://ozlabs.org/~akpm/mmots/broken-out/lib-test_vmallocc-add-a-new-nr_threads-parameter-fix.patch
and later at
    https://ozlabs.org/~akpm/mmotm/broken-out/lib-test_vmallocc-add-a-new-nr_threads-parameter-fix.patch

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------------------------------------------------------
From: "Uladzislau Rezki (Sony)" <urezki@gmail.com>
Subject: lib/test_vmalloc.c: extend max value of nr_threads parameter

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.

Link: https://lkml.kernel.org/r/20210406124536.19658-1-urezki@gmail.com
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
Cc: Hillf Danton <hdanton@sina.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Michal Hocko <mhocko@suse.com>
Cc: Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com>
Cc: Shuah Khan <shuah@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
---

 lib/test_vmalloc.c |   12 ++++++------
 1 file changed, 6 insertions(+), 6 deletions(-)

--- a/lib/test_vmalloc.c~lib-test_vmallocc-add-a-new-nr_threads-parameter-fix
+++ a/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)
_

Patches currently in -mm which might be from urezki@gmail.com are

mm-vmalloc-improve-allocation-failure-error-messages-fix.patch
lib-test_vmallocc-remove-two-kvfree_rcu-tests.patch
lib-test_vmallocc-add-a-new-nr_threads-parameter.patch
lib-test_vmallocc-add-a-new-nr_threads-parameter-fix.patch
vm-test_vmallocsh-adapt-for-updated-driver-interface.patch
mm-vmalloc-refactor-the-preloading-loagic.patch
mm-vmalloc-remove-an-empty-line.patch