From: Liam Howlett <liam.howlett@oracle.com>
To: "maple-tree@lists.infradead.org" <maple-tree@lists.infradead.org>,
"linux-mm@kvack.org" <linux-mm@kvack.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Andrew Morton <akpm@linux-foundation.org>
Subject: [PATCH v6 06/71] radix tree test suite: Add support for slab bulk APIs
Date: Tue, 15 Feb 2022 14:42:58 +0000 [thread overview]
Message-ID: <20220215144241.3812052-6-Liam.Howlett@oracle.com> (raw)
In-Reply-To: <20220215144241.3812052-1-Liam.Howlett@oracle.com>
From: "Liam R. Howlett" <Liam.Howlett@Oracle.com>
Add support for kmem_cache_free_bulk() and kmem_cache_alloc_bulk() to
the radix tree test suite.
Signed-off-by: Liam R. Howlett <Liam.Howlett@Oracle.com>
---
tools/testing/radix-tree/linux.c | 118 +++++++++++++++++++++++++-
tools/testing/radix-tree/linux/slab.h | 4 +
2 files changed, 120 insertions(+), 2 deletions(-)
diff --git a/tools/testing/radix-tree/linux.c b/tools/testing/radix-tree/linux.c
index f95e71d65f00..3383d748c650 100644
--- a/tools/testing/radix-tree/linux.c
+++ b/tools/testing/radix-tree/linux.c
@@ -93,14 +93,13 @@ void *kmem_cache_alloc(struct kmem_cache *cachep, int gfp)
return p;
}
-void kmem_cache_free(struct kmem_cache *cachep, void *objp)
+void kmem_cache_free_locked(struct kmem_cache *cachep, void *objp)
{
assert(objp);
uatomic_dec(&nr_allocated);
uatomic_dec(&cachep->nr_allocated);
if (kmalloc_verbose)
printf("Freeing %p to slab\n", objp);
- pthread_mutex_lock(&cachep->lock);
if (cachep->nr_objs > 10 || cachep->align) {
memset(objp, POISON_FREE, cachep->size);
free(objp);
@@ -110,9 +109,80 @@ void kmem_cache_free(struct kmem_cache *cachep, void *objp)
node->parent = cachep->objs;
cachep->objs = node;
}
+}
+
+void kmem_cache_free(struct kmem_cache *cachep, void *objp)
+{
+ pthread_mutex_lock(&cachep->lock);
+ kmem_cache_free_locked(cachep, objp);
+ pthread_mutex_unlock(&cachep->lock);
+}
+
+void kmem_cache_free_bulk(struct kmem_cache *cachep, size_t size, void **list)
+{
+ if (kmalloc_verbose)
+ pr_debug("Bulk free %p[0-%lu]\n", list, size - 1);
+
+ pthread_mutex_lock(&cachep->lock);
+ for (int i = 0; i < size; i++)
+ kmem_cache_free_locked(cachep, list[i]);
pthread_mutex_unlock(&cachep->lock);
}
+int kmem_cache_alloc_bulk(struct kmem_cache *cachep, gfp_t gfp, size_t size,
+ void **p)
+{
+ size_t i;
+
+ if (kmalloc_verbose)
+ pr_debug("Bulk alloc %lu\n", size);
+
+ if (!(gfp & __GFP_DIRECT_RECLAIM)) {
+ if (cachep->non_kernel < size)
+ return 0;
+
+ cachep->non_kernel -= size;
+ }
+
+ pthread_mutex_lock(&cachep->lock);
+ if (cachep->nr_objs >= size) {
+ struct radix_tree_node *node;
+
+ for (i = 0; i < size; i++) {
+ node = cachep->objs;
+ cachep->nr_objs--;
+ cachep->objs = node->parent;
+ p[i] = node;
+ node->parent = NULL;
+ }
+ pthread_mutex_unlock(&cachep->lock);
+ } else {
+ pthread_mutex_unlock(&cachep->lock);
+ for (i = 0; i < size; i++) {
+ if (cachep->align) {
+ posix_memalign(&p[i], cachep->align,
+ cachep->size * size);
+ } else {
+ p[i] = malloc(cachep->size * size);
+ }
+ if (cachep->ctor)
+ cachep->ctor(p[i]);
+ else if (gfp & __GFP_ZERO)
+ memset(p[i], 0, cachep->size);
+ }
+ }
+
+ for (i = 0; i < size; i++) {
+ uatomic_inc(&nr_allocated);
+ uatomic_inc(&cachep->nr_allocated);
+ uatomic_inc(&cachep->nr_tallocated);
+ if (kmalloc_verbose)
+ printf("Allocating %p from slab\n", p[i]);
+ }
+
+ return size;
+}
+
void *kmalloc(size_t size, gfp_t gfp)
{
void *ret;
@@ -156,3 +226,47 @@ kmem_cache_create(const char *name, unsigned int size, unsigned int align,
ret->non_kernel = 0;
return ret;
}
+
+/*
+ * Test the test infrastructure for kem_cache_alloc/free and bulk counterparts.
+ */
+void test_kmem_cache_bulk(void)
+{
+ int i;
+ void *list[12];
+ static struct kmem_cache *test_cache, *test_cache2;
+
+ /*
+ * Testing the bulk allocators without aligned kmem_cache to force the
+ * bulk alloc/free to reuse
+ */
+ test_cache = kmem_cache_create("test_cache", 256, 0, SLAB_PANIC, NULL);
+
+ for (i = 0; i < 5; i++)
+ list[i] = kmem_cache_alloc(test_cache, __GFP_DIRECT_RECLAIM);
+
+ for (i = 0; i < 5; i++)
+ kmem_cache_free(test_cache, list[i]);
+ assert(test_cache->nr_objs == 5);
+
+ kmem_cache_alloc_bulk(test_cache, __GFP_DIRECT_RECLAIM, 5, list);
+ kmem_cache_free_bulk(test_cache, 5, list);
+
+ for (i = 0; i < 12 ; i++)
+ list[i] = kmem_cache_alloc(test_cache, __GFP_DIRECT_RECLAIM);
+
+ for (i = 0; i < 12; i++)
+ kmem_cache_free(test_cache, list[i]);
+
+ /* The last free will not be kept around */
+ assert(test_cache->nr_objs == 11);
+
+ /* Aligned caches will immediately free */
+ test_cache2 = kmem_cache_create("test_cache2", 128, 128, SLAB_PANIC, NULL);
+
+ kmem_cache_alloc_bulk(test_cache2, __GFP_DIRECT_RECLAIM, 10, list);
+ kmem_cache_free_bulk(test_cache2, 10, list);
+ assert(!test_cache2->nr_objs);
+
+
+}
diff --git a/tools/testing/radix-tree/linux/slab.h b/tools/testing/radix-tree/linux/slab.h
index 2958830ce4d7..d7aed1cc6978 100644
--- a/tools/testing/radix-tree/linux/slab.h
+++ b/tools/testing/radix-tree/linux/slab.h
@@ -24,4 +24,8 @@ struct kmem_cache *kmem_cache_create(const char *name, unsigned int size,
unsigned int align, unsigned int flags,
void (*ctor)(void *));
+void kmem_cache_free_bulk(struct kmem_cache *cachep, size_t size, void **list);
+int kmem_cache_alloc_bulk(struct kmem_cache *cachep, gfp_t gfp, size_t size,
+ void **list);
+
#endif /* SLAB_H */
--
2.34.1
next prev parent reply other threads:[~2022-02-15 14:43 UTC|newest]
Thread overview: 100+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-02-15 14:37 [PATCH v6 00/71] Introducing the Maple Tree Liam Howlett
2022-02-15 14:42 ` [PATCH v6 01/71] binfmt_elf: Take the mmap lock when walking the VMA list Liam Howlett
2022-02-15 14:42 ` [PATCH v6 03/71] radix tree test suite: Add pr_err define Liam Howlett
2022-02-15 14:42 ` [PATCH v6 02/71] xarray: Fix bitmap breakage Liam Howlett
2022-02-15 14:42 ` [PATCH v6 04/71] radix tree test suite: Add kmem_cache_set_non_kernel() Liam Howlett
2022-02-15 14:42 ` [PATCH v6 05/71] radix tree test suite: Add allocation counts and size to kmem_cache Liam Howlett
2022-02-15 14:42 ` Liam Howlett [this message]
2022-02-15 14:42 ` [PATCH v6 07/71] radix tree test suite: Add lockdep_is_held to header Liam Howlett
2022-02-15 14:43 ` [PATCH v6 08/71] Maple Tree: Add new data structure Liam Howlett
2022-02-16 10:11 ` Mark Hemment
2022-02-16 18:25 ` Liam Howlett
2022-02-27 1:11 ` Vasily Gorbik
2022-02-27 12:46 ` Vasily Gorbik
2022-02-28 14:36 ` Liam Howlett
2022-03-01 2:01 ` Vasily Gorbik
2022-03-01 20:39 ` Liam Howlett
2022-03-01 22:50 ` Vasily Gorbik
2022-03-01 22:56 ` Vasily Gorbik
2022-03-02 14:08 ` Liam Howlett
2022-02-15 14:43 ` [PATCH v6 09/71] lib/test_maple_tree: Add testing for maple tree Liam Howlett
2022-02-15 14:43 ` [PATCH v6 10/71] mm: Start tracking VMAs with " Liam Howlett
2022-02-15 14:43 ` [PATCH v6 11/71] mm: Add VMA iterator Liam Howlett
2022-02-16 10:50 ` Mark Hemment
2022-02-16 18:32 ` Liam Howlett
2022-02-15 14:43 ` [PATCH v6 12/71] mmap: Use the VMA iterator in count_vma_pages_range() Liam Howlett
2022-02-15 14:43 ` [PATCH v6 13/71] mm/mmap: Use the maple tree in find_vma() instead of the rbtree Liam Howlett
2022-02-15 14:43 ` [PATCH v6 15/71] mm/mmap: Use maple tree for unmapped_area{_topdown} Liam Howlett
2022-02-15 14:43 ` [PATCH v6 16/71] kernel/fork: Use maple tree for dup_mmap() during forking Liam Howlett
2022-02-15 14:43 ` [PATCH v6 14/71] mm/mmap: Use the maple tree for find_vma_prev() instead of the rbtree Liam Howlett
2022-02-15 14:43 ` [PATCH v6 18/71] proc: Remove VMA rbtree use from nommu Liam Howlett
2022-02-15 14:43 ` [PATCH v6 17/71] damon: Convert __damon_va_three_regions to use the VMA iterator Liam Howlett
2022-02-15 14:43 ` [PATCH v6 19/71] mm: Remove rb tree Liam Howlett
2022-02-15 14:43 ` [PATCH v6 20/71] mmap: Change zeroing of maple tree in __vma_adjust() Liam Howlett
2022-02-15 14:43 ` [PATCH v6 23/71] mm/khugepaged: Optimize collapse_pte_mapped_thp() by using vma_lookup() Liam Howlett
2022-02-15 14:43 ` [PATCH v6 21/71] xen: Use vma_lookup() in privcmd_ioctl_mmap() Liam Howlett
2022-02-15 14:43 ` [PATCH v6 22/71] mm: Optimize find_exact_vma() to use vma_lookup() Liam Howlett
2022-02-15 14:43 ` [PATCH v6 25/71] mm: Use maple tree operations for find_vma_intersection() Liam Howlett
2022-02-15 14:43 ` [PATCH v6 24/71] mm/mmap: Change do_brk_flags() to expand existing VMA and add do_brk_munmap() Liam Howlett
2022-02-15 14:43 ` [PATCH v6 26/71] mm/mmap: Use advanced maple tree API for mmap_region() Liam Howlett
2022-02-15 14:43 ` [PATCH v6 27/71] mm: Remove vmacache Liam Howlett
2022-02-15 14:43 ` [PATCH v6 28/71] mm: Convert vma_lookup() to use mtree_load() Liam Howlett
2022-02-15 14:43 ` [PATCH v6 29/71] mm/mmap: Move mmap_region() below do_munmap() Liam Howlett
2022-02-15 14:43 ` [PATCH v6 30/71] mm/mmap: Reorganize munmap to use maple states Liam Howlett
2022-02-15 14:43 ` [PATCH v6 31/71] mm/mmap: Change do_brk_munmap() to use do_mas_align_munmap() Liam Howlett
2022-02-15 14:43 ` [PATCH v6 32/71] arm64: Remove mmap linked list from vdso Liam Howlett
2022-02-15 14:43 ` [PATCH v6 35/71] s390: Remove vma linked list walks Liam Howlett
2022-02-15 14:43 ` [PATCH v6 33/71] parisc: Remove mmap linked list from cache handling Liam Howlett
2022-02-15 14:43 ` [PATCH v6 34/71] powerpc: Remove mmap linked list walks Liam Howlett
2022-02-15 14:43 ` [PATCH v6 37/71] xtensa: Remove vma " Liam Howlett
2022-02-15 14:43 ` [PATCH v6 38/71] cxl: Remove vma linked list walk Liam Howlett
2022-02-15 14:43 ` [PATCH v6 36/71] x86: Remove vma linked list walks Liam Howlett
2022-02-15 14:43 ` [PATCH v6 40/71] um: Remove vma linked list walk Liam Howlett
2022-02-15 14:43 ` [PATCH v6 39/71] optee: " Liam Howlett
2022-02-15 14:43 ` [PATCH v6 41/71] binfmt_elf: " Liam Howlett
2022-02-15 14:43 ` [PATCH v6 43/71] exec: Use VMA iterator instead of linked list Liam Howlett
2022-02-15 14:43 ` [PATCH v6 42/71] coredump: Remove vma linked list walk Liam Howlett
2022-02-15 14:43 ` [PATCH v6 45/71] fs/proc/task_mmu: Stop using linked list and highest_vm_end Liam Howlett
2022-02-15 14:43 ` [PATCH v6 44/71] fs/proc/base: Use maple tree iterators in place of linked list Liam Howlett
2022-02-15 14:43 ` [PATCH v6 47/71] ipc/shm: Use VMA iterator instead " Liam Howlett
2022-02-15 14:43 ` [PATCH v6 46/71] userfaultfd: Use maple tree iterator to iterate VMAs Liam Howlett
2022-02-15 14:43 ` [PATCH v6 48/71] acct: Use VMA iterator instead of linked list Liam Howlett
2022-02-15 14:43 ` [PATCH v6 49/71] perf: Use VMA iterator Liam Howlett
2022-02-15 14:43 ` [PATCH v6 50/71] sched: Use maple tree iterator to walk VMAs Liam Howlett
2022-02-15 14:43 ` [PATCH v6 51/71] fork: Use VMA iterator Liam Howlett
2022-02-15 14:43 ` [PATCH v6 52/71] bpf: Remove VMA linked list Liam Howlett
2022-02-15 14:43 ` [PATCH v6 53/71] mm/gup: Use maple tree navigation instead of " Liam Howlett
2022-02-15 14:43 ` [PATCH v6 55/71] mm/ksm: Use vma iterators instead of vma " Liam Howlett
2022-02-15 14:43 ` [PATCH v6 54/71] mm/khugepaged: Stop using " Liam Howlett
2022-02-15 14:43 ` [PATCH v6 57/71] mm/memcontrol: Stop using mm->highest_vm_end Liam Howlett
2022-02-15 14:43 ` [PATCH v6 56/71] mm/madvise: Use vma_find() instead of vma linked list Liam Howlett
2022-02-15 14:43 ` [PATCH v6 58/71] mm/mempolicy: Use vma iterator & maple state " Liam Howlett
2022-02-15 14:43 ` [PATCH v6 61/71] mm/mremap: Use vma_find_intersection() " Liam Howlett
2022-02-15 14:43 ` [PATCH v6 60/71] mm/mprotect: Use maple tree navigation " Liam Howlett
2022-02-15 14:43 ` [PATCH v6 59/71] mm/mlock: Use vma iterator and " Liam Howlett
2022-02-15 14:43 ` [PATCH v6 62/71] mm/msync: Use vma_find() " Liam Howlett
2022-02-15 14:43 ` [PATCH v6 63/71] mm/oom_kill: Use maple tree iterators " Liam Howlett
2022-02-15 14:43 ` [PATCH v6 64/71] mm/pagewalk: Use vma_find() " Liam Howlett
2022-02-15 14:43 ` [PATCH v6 66/71] i915: Use the VMA iterator Liam Howlett
2022-02-15 14:43 ` [PATCH v6 65/71] mm/swapfile: Use vma iterator instead of vma linked list Liam Howlett
2022-02-15 14:43 ` [PATCH v6 68/71] riscv: Use vma iterator for vdso Liam Howlett
2022-02-15 14:43 ` [PATCH v6 69/71] mm: Remove the vma linked list Liam Howlett
2022-02-15 14:43 ` [PATCH v6 67/71] nommu: Remove uses of VMA " Liam Howlett
2022-02-15 14:43 ` [PATCH v6 70/71] mm/mmap: Drop range_has_overlap() function Liam Howlett
2022-02-15 14:43 ` [PATCH v6 71/71] mm/mmap.c: Pass in mapping to __vma_link_file() Liam Howlett
2022-02-16 19:47 ` [PATCH v6 00/71] Introducing the Maple Tree Andrew Morton
2022-02-16 20:24 ` Matthew Wilcox
2022-02-23 16:35 ` Mel Gorman
2022-02-23 16:45 ` Matthew Wilcox
2022-02-25 3:49 ` Qian Cai
2022-02-25 19:08 ` Liam Howlett
2022-02-25 20:23 ` Liam Howlett
2022-02-25 20:46 ` Qian Cai
2022-02-25 23:00 ` Nathan Chancellor
2022-02-26 1:58 ` Liam Howlett
2022-02-26 23:19 ` Hugh Dickins
2022-02-27 18:32 ` Hugh Dickins
2022-02-28 14:26 ` Liam Howlett
2022-02-28 11:56 ` Qian Cai
2022-02-27 2:22 ` Vasily Gorbik
2022-02-28 14:56 ` Liam Howlett
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