From: "Uladzislau Rezki (Sony)" <urezki@gmail.com>
To: LKML <linux-kernel@vger.kernel.org>, linux-mm@kvack.org
Cc: Andrew Morton <akpm@linux-foundation.org>,
"Paul E . McKenney" <paulmck@kernel.org>,
"Theodore Y . Ts'o" <tytso@mit.edu>,
Matthew Wilcox <willy@infradead.org>,
Joel Fernandes <joel@joelfernandes.org>,
RCU <rcu@vger.kernel.org>, Uladzislau Rezki <urezki@gmail.com>,
Oleksiy Avramchenko <oleksiy.avramchenko@sonymobile.com>
Subject: [PATCH 24/24] lib/test_vmalloc.c: Add test cases for kvfree_rcu()
Date: Tue, 28 Apr 2020 22:59:03 +0200 [thread overview]
Message-ID: <20200428205903.61704-25-urezki@gmail.com> (raw)
In-Reply-To: <20200428205903.61704-1-urezki@gmail.com>
Introduce four new test cases. They are considered to
cover and testing of kvfree_rcu() interface. Two of
them belong to 1 argument functionality and another
two for 2 arguments functionality.
The aim is to stress it, to check how it behaves under
different load and memory conditions, analysis of the
performance throughput and its impact.
Signed-off-by: Uladzislau Rezki (Sony) <urezki@gmail.com>
---
lib/test_vmalloc.c | 103 +++++++++++++++++++++++++++++++++++++++++----
1 file changed, 95 insertions(+), 8 deletions(-)
diff --git a/lib/test_vmalloc.c b/lib/test_vmalloc.c
index 8bbefcaddfe8..ec73561cda2e 100644
--- a/lib/test_vmalloc.c
+++ b/lib/test_vmalloc.c
@@ -15,6 +15,8 @@
#include <linux/delay.h>
#include <linux/rwsem.h>
#include <linux/mm.h>
+#include <linux/rcupdate.h>
+#include <linux/slab.h>
#define __param(type, name, init, msg) \
static type name = init; \
@@ -35,14 +37,18 @@ __param(int, test_loop_count, 1000000,
__param(int, run_test_mask, INT_MAX,
"Set tests specified in the mask.\n\n"
- "\t\tid: 1, name: fix_size_alloc_test\n"
- "\t\tid: 2, name: full_fit_alloc_test\n"
- "\t\tid: 4, name: long_busy_list_alloc_test\n"
- "\t\tid: 8, name: random_size_alloc_test\n"
- "\t\tid: 16, name: fix_align_alloc_test\n"
- "\t\tid: 32, name: random_size_align_alloc_test\n"
- "\t\tid: 64, name: align_shift_alloc_test\n"
- "\t\tid: 128, name: pcpu_alloc_test\n"
+ "\t\tid: 1, name: fix_size_alloc_test\n"
+ "\t\tid: 2, name: full_fit_alloc_test\n"
+ "\t\tid: 4, name: long_busy_list_alloc_test\n"
+ "\t\tid: 8, name: random_size_alloc_test\n"
+ "\t\tid: 16, name: fix_align_alloc_test\n"
+ "\t\tid: 32, name: random_size_align_alloc_test\n"
+ "\t\tid: 64, name: align_shift_alloc_test\n"
+ "\t\tid: 128, name: pcpu_alloc_test\n"
+ "\t\tid: 256, name: kvfree_rcu_1_arg_vmalloc_test\n"
+ "\t\tid: 512, name: kvfree_rcu_2_arg_vmalloc_test\n"
+ "\t\tid: 1024, name: kvfree_rcu_1_arg_slab_test\n"
+ "\t\tid: 2048, name: kvfree_rcu_2_arg_slab_test\n"
/* Add a new test case description here. */
);
@@ -328,6 +334,83 @@ pcpu_alloc_test(void)
return rv;
}
+struct test_kvfree_rcu {
+ struct rcu_head rcu;
+ unsigned char array[20];
+};
+
+static int
+kvfree_rcu_1_arg_vmalloc_test(void)
+{
+ struct test_kvfree_rcu *p;
+ int i;
+
+ for (i = 0; i < test_loop_count; i++) {
+ p = vmalloc(1 * PAGE_SIZE);
+ if (!p)
+ return -1;
+
+ p->array[0] = 'a';
+ kvfree_rcu(p);
+ }
+
+ return 0;
+}
+
+static int
+kvfree_rcu_2_arg_vmalloc_test(void)
+{
+ struct test_kvfree_rcu *p;
+ int i;
+
+ for (i = 0; i < test_loop_count; i++) {
+ p = vmalloc(1 * PAGE_SIZE);
+ if (!p)
+ return -1;
+
+ p->array[0] = 'a';
+ kvfree_rcu(p, rcu);
+ }
+
+ return 0;
+}
+
+static int
+kvfree_rcu_1_arg_slab_test(void)
+{
+ struct test_kvfree_rcu *p;
+ int i;
+
+ for (i = 0; i < test_loop_count; i++) {
+ p = kmalloc(sizeof(*p), GFP_KERNEL);
+ if (!p)
+ return -1;
+
+ p->array[0] = 'a';
+ kvfree_rcu(p);
+ }
+
+ return 0;
+}
+
+static int
+kvfree_rcu_2_arg_slab_test(void)
+{
+ struct test_kvfree_rcu *p;
+ int i;
+
+ for (i = 0; i < test_loop_count; i++) {
+ p = kmalloc(sizeof(*p), GFP_KERNEL);
+ if (!p)
+ return -1;
+
+ p->array[0] = 'a';
+ kvfree_rcu(p, rcu);
+ }
+
+ return 0;
+}
+
struct test_case_desc {
const char *test_name;
int (*test_func)(void);
@@ -342,6 +425,10 @@ static struct test_case_desc test_case_array[] = {
{ "random_size_align_alloc_test", random_size_align_alloc_test },
{ "align_shift_alloc_test", align_shift_alloc_test },
{ "pcpu_alloc_test", pcpu_alloc_test },
+ { "kvfree_rcu_1_arg_vmalloc_test", kvfree_rcu_1_arg_vmalloc_test },
+ { "kvfree_rcu_2_arg_vmalloc_test", kvfree_rcu_2_arg_vmalloc_test },
+ { "kvfree_rcu_1_arg_slab_test", kvfree_rcu_1_arg_slab_test },
+ { "kvfree_rcu_2_arg_slab_test", kvfree_rcu_2_arg_slab_test },
/* Add a new test case here. */
};
--
2.20.1
prev parent reply other threads:[~2020-04-28 21:00 UTC|newest]
Thread overview: 78+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-04-28 20:58 [PATCH 00/24] Introduce kvfree_rcu(1 or 2 arguments) Uladzislau Rezki (Sony)
2020-04-28 20:58 ` [PATCH 01/24] rcu/tree: Keep kfree_rcu() awake during lock contention Uladzislau Rezki (Sony)
2020-04-28 20:58 ` [PATCH 02/24] rcu/tree: Skip entry into the page allocator for PREEMPT_RT Uladzislau Rezki (Sony)
2020-04-28 20:58 ` [PATCH 03/24] rcu/tree: Use consistent style for comments Uladzislau Rezki (Sony)
2020-05-01 19:05 ` Paul E. McKenney
2020-05-01 20:52 ` Joe Perches
2020-05-03 23:44 ` Joel Fernandes
2020-05-04 0:23 ` Paul E. McKenney
2020-05-04 0:34 ` Joe Perches
2020-05-04 0:41 ` Joel Fernandes
2020-05-03 23:52 ` Joel Fernandes
2020-05-04 0:26 ` Paul E. McKenney
2020-05-04 0:39 ` Joel Fernandes
2020-04-28 20:58 ` [PATCH 04/24] rcu/tree: Repeat the monitor if any free channel is busy Uladzislau Rezki (Sony)
2020-04-28 20:58 ` [PATCH 05/24] rcu/tree: Simplify debug_objects handling Uladzislau Rezki (Sony)
2020-04-28 20:58 ` [PATCH 06/24] rcu/tree: Simplify KFREE_BULK_MAX_ENTR macro Uladzislau Rezki (Sony)
2020-04-28 20:58 ` [PATCH 07/24] rcu/tree: move locking/unlocking to separate functions Uladzislau Rezki (Sony)
2020-04-28 20:58 ` [PATCH 08/24] rcu/tree: Use static initializer for krc.lock Uladzislau Rezki (Sony)
2020-05-01 21:17 ` Paul E. McKenney
2020-05-04 12:10 ` Uladzislau Rezki
2020-04-28 20:58 ` [PATCH 09/24] rcu/tree: cache specified number of objects Uladzislau Rezki (Sony)
2020-05-01 21:27 ` Paul E. McKenney
2020-05-04 12:43 ` Uladzislau Rezki
2020-05-04 15:24 ` Paul E. McKenney
2020-05-04 17:48 ` Uladzislau Rezki
2020-05-04 18:07 ` Paul E. McKenney
2020-05-04 18:08 ` Joel Fernandes
2020-05-04 19:01 ` Paul E. McKenney
2020-05-04 19:37 ` Joel Fernandes
2020-05-04 19:51 ` Uladzislau Rezki
2020-05-04 20:15 ` joel
2020-05-04 20:16 ` Paul E. McKenney
2020-05-05 11:03 ` Uladzislau Rezki
2020-04-28 20:58 ` [PATCH 10/24] rcu/tree: add rcutree.rcu_min_cached_objs description Uladzislau Rezki (Sony)
2020-05-01 22:25 ` Paul E. McKenney
2020-05-04 12:44 ` Uladzislau Rezki
2020-04-28 20:58 ` [PATCH 11/24] rcu/tree: Maintain separate array for vmalloc ptrs Uladzislau Rezki (Sony)
2020-05-01 21:37 ` Paul E. McKenney
2020-05-03 23:42 ` Joel Fernandes
2020-05-04 0:20 ` Paul E. McKenney
2020-05-04 0:58 ` Joel Fernandes
2020-05-04 2:20 ` Paul E. McKenney
2020-05-04 14:25 ` Uladzislau Rezki
2020-04-28 20:58 ` [PATCH 12/24] rcu/tiny: support vmalloc in tiny-RCU Uladzislau Rezki (Sony)
2020-04-28 20:58 ` [PATCH 13/24] rcu: Rename rcu_invoke_kfree_callback/rcu_kfree_callback Uladzislau Rezki (Sony)
2020-04-28 20:58 ` [PATCH 14/24] rcu: Rename __is_kfree_rcu_offset() macro Uladzislau Rezki (Sony)
2020-04-28 20:58 ` [PATCH 15/24] rcu: Rename kfree_call_rcu() to the kvfree_call_rcu() Uladzislau Rezki (Sony)
2020-04-28 20:58 ` [PATCH 16/24] mm/list_lru.c: Rename kvfree_rcu() to local variant Uladzislau Rezki (Sony)
2020-04-28 20:58 ` [PATCH 17/24] rcu: Introduce 2 arg kvfree_rcu() interface Uladzislau Rezki (Sony)
2020-04-28 20:58 ` [PATCH 18/24] mm/list_lru.c: Remove kvfree_rcu_local() function Uladzislau Rezki (Sony)
2020-04-28 20:58 ` [PATCH 19/24] rcu/tree: Support reclaim for head-less object Uladzislau Rezki (Sony)
2020-05-01 22:39 ` Paul E. McKenney
2020-05-04 0:12 ` Joel Fernandes
2020-05-04 0:28 ` Paul E. McKenney
2020-05-04 0:32 ` Joel Fernandes
2020-05-04 14:21 ` Uladzislau Rezki
2020-05-04 15:31 ` Paul E. McKenney
2020-05-04 16:56 ` Uladzislau Rezki
2020-05-04 17:08 ` Paul E. McKenney
2020-05-04 12:57 ` Uladzislau Rezki
2020-04-28 20:58 ` [PATCH 20/24] rcu/tree: Make kvfree_rcu() tolerate any alignment Uladzislau Rezki (Sony)
2020-05-01 23:00 ` Paul E. McKenney
2020-05-04 0:24 ` Joel Fernandes
2020-05-04 0:29 ` Paul E. McKenney
2020-05-04 0:31 ` Joel Fernandes
2020-05-04 12:56 ` Uladzislau Rezki
2020-04-28 20:59 ` [PATCH 21/24] rcu/tiny: move kvfree_call_rcu() out of header Uladzislau Rezki (Sony)
2020-05-01 23:03 ` Paul E. McKenney
2020-05-04 12:45 ` Uladzislau Rezki
2020-05-06 18:29 ` Uladzislau Rezki
2020-05-06 18:45 ` Paul E. McKenney
2020-05-07 17:34 ` Uladzislau Rezki
2020-04-28 20:59 ` [PATCH 22/24] rcu/tiny: support reclaim for head-less object Uladzislau Rezki (Sony)
2020-05-01 23:06 ` Paul E. McKenney
2020-05-04 0:27 ` Joel Fernandes
2020-05-04 12:45 ` Uladzislau Rezki
2020-04-28 20:59 ` [PATCH 23/24] rcu: Introduce 1 arg kvfree_rcu() interface Uladzislau Rezki (Sony)
2020-04-28 20:59 ` Uladzislau Rezki (Sony) [this message]
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