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>
Cc: Liam Howlett <liam.howlett@oracle.com>
Subject: [PATCH v14 05/70] radix tree test suite: add support for slab bulk APIs
Date: Tue, 6 Sep 2022 19:48:41 +0000 [thread overview]
Message-ID: <20220906194824.2110408-6-Liam.Howlett@oracle.com> (raw)
In-Reply-To: <20220906194824.2110408-1-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/include/linux/slab.h | 4 ++
tools/testing/radix-tree/linux.c | 118 ++++++++++++++++++++++++++++++-
2 files changed, 120 insertions(+), 2 deletions(-)
diff --git a/tools/include/linux/slab.h b/tools/include/linux/slab.h
index 0616409513eb..311759ea25e9 100644
--- a/tools/include/linux/slab.h
+++ b/tools/include/linux/slab.h
@@ -41,4 +41,8 @@ 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 /* _TOOLS_SLAB_H */
diff --git a/tools/testing/radix-tree/linux.c b/tools/testing/radix-tree/linux.c
index f20529ae4dbe..2048d12c31df 100644
--- a/tools/testing/radix-tree/linux.c
+++ b/tools/testing/radix-tree/linux.c
@@ -93,14 +93,13 @@ void *kmem_cache_alloc_lru(struct kmem_cache *cachep, struct list_lru *lru,
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;
+}
+
struct kmem_cache *
kmem_cache_create(const char *name, unsigned int size, unsigned int align,
unsigned int flags, void (*ctor)(void *))
@@ -130,3 +200,47 @@ 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);
+
+
+}
--
2.35.1
next prev parent reply other threads:[~2022-09-06 19:48 UTC|newest]
Thread overview: 89+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-09-06 19:48 [PATCH v14 00/70] Introducing the Maple Tree Liam Howlett
2022-09-06 19:48 ` [PATCH v14 02/70] radix tree test suite: add pr_err define Liam Howlett
2022-09-06 19:48 ` [PATCH v14 01/70] Maple Tree: add new data structure Liam Howlett
2022-09-12 8:42 ` Bagas Sanjaya
2022-09-14 10:16 ` Liam Howlett
2022-09-06 19:48 ` [PATCH v14 04/70] radix tree test suite: add allocation counts and size to kmem_cache Liam Howlett
2022-09-06 19:48 ` [PATCH v14 03/70] radix tree test suite: add kmem_cache_set_non_kernel() Liam Howlett
2022-09-06 19:48 ` Liam Howlett [this message]
2022-09-06 19:48 ` [PATCH v14 06/70] radix tree test suite: add lockdep_is_held to header Liam Howlett
2022-09-06 19:48 ` [PATCH v14 07/70] lib/test_maple_tree: add testing for maple tree Liam Howlett
2022-10-11 12:16 ` Geert Uytterhoeven
2022-10-11 12:56 ` Matthew Wilcox
2022-10-11 12:59 ` Geert Uytterhoeven
2022-10-11 16:13 ` Liam Howlett
2022-09-06 19:48 ` [PATCH v14 08/70] mm: start tracking VMAs with " Liam Howlett
2022-09-06 19:48 ` [PATCH v14 11/70] mm/mmap: use the maple tree in find_vma() instead of the rbtree Liam Howlett
2022-09-06 19:48 ` [PATCH v14 10/70] mmap: use the VMA iterator in count_vma_pages_range() Liam Howlett
2022-09-06 19:48 ` [PATCH v14 09/70] mm: add VMA iterator Liam Howlett
2022-09-06 19:48 ` [PATCH v14 14/70] kernel/fork: use maple tree for dup_mmap() during forking Liam Howlett
2022-09-06 19:48 ` [PATCH v14 12/70] mm/mmap: use the maple tree for find_vma_prev() instead of the rbtree Liam Howlett
2022-09-06 19:48 ` [PATCH v14 13/70] mm/mmap: use maple tree for unmapped_area{_topdown} Liam Howlett
2022-09-06 19:48 ` [PATCH v14 17/70] mm: remove rb tree Liam Howlett
2022-09-06 19:48 ` [PATCH v14 16/70] proc: remove VMA rbtree use from nommu Liam Howlett
2022-09-06 19:48 ` [PATCH v14 15/70] damon: convert __damon_va_three_regions to use the VMA iterator Liam Howlett
2022-09-06 19:48 ` [PATCH v14 20/70] mm: optimize find_exact_vma() to use vma_lookup() Liam Howlett
2022-09-06 19:48 ` [PATCH v14 18/70] mmap: change zeroing of maple tree in __vma_adjust() Liam Howlett
2022-09-06 19:48 ` [PATCH v14 19/70] xen: use vma_lookup() in privcmd_ioctl_mmap() Liam Howlett
2022-09-06 19:48 ` [PATCH v14 22/70] mm/mmap: change do_brk_flags() to expand existing VMA and add do_brk_munmap() Liam Howlett
2022-09-06 19:48 ` [PATCH v14 21/70] mm/khugepaged: optimize collapse_pte_mapped_thp() by using vma_lookup() Liam Howlett
2022-09-06 19:48 ` [PATCH v14 23/70] mm: use maple tree operations for find_vma_intersection() Liam Howlett
2022-09-06 19:48 ` [PATCH v14 24/70] mm/mmap: use advanced maple tree API for mmap_region() Liam Howlett
2022-09-06 19:48 ` [PATCH v14 25/70] mm: remove vmacache Liam Howlett
2022-09-06 19:48 ` [PATCH v14 26/70] mm: convert vma_lookup() to use mtree_load() Liam Howlett
2022-09-06 19:48 ` [PATCH v14 28/70] mm/mmap: reorganize munmap to use maple states Liam Howlett
2022-09-06 19:48 ` [PATCH v14 27/70] mm/mmap: move mmap_region() below do_munmap() Liam Howlett
2022-09-06 19:48 ` [PATCH v14 29/70] mm/mmap: change do_brk_munmap() to use do_mas_align_munmap() Liam Howlett
2022-09-06 19:48 ` [PATCH v14 30/70] arm64: remove mmap linked list from vdso Liam Howlett
2022-09-06 19:48 ` [PATCH v14 31/70] arm64: Change elfcore for_each_mte_vma() to use VMA iterator Liam Howlett
2022-09-06 19:48 ` [PATCH v14 32/70] parisc: remove mmap linked list from cache handling Liam Howlett
2022-09-06 19:48 ` [PATCH v14 33/70] powerpc: remove mmap linked list walks Liam Howlett
2022-09-06 19:48 ` [PATCH v14 34/70] s390: remove vma " Liam Howlett
2022-09-06 19:48 ` [PATCH v14 35/70] x86: " Liam Howlett
2022-09-06 19:48 ` [PATCH v14 38/70] optee: remove vma linked list walk Liam Howlett
2022-09-06 19:48 ` [PATCH v14 36/70] xtensa: remove vma linked list walks Liam Howlett
2022-09-06 19:48 ` [PATCH v14 37/70] cxl: remove vma linked list walk Liam Howlett
2022-09-06 19:48 ` [PATCH v14 39/70] um: " Liam Howlett
2022-09-06 19:48 ` [PATCH v14 41/70] exec: use VMA iterator instead of linked list Liam Howlett
2022-09-06 19:48 ` [PATCH v14 40/70] coredump: remove vma linked list walk Liam Howlett
2022-09-06 19:48 ` [PATCH v14 42/70] fs/proc/base: use the vma iterators in place of linked list Liam Howlett
2022-09-06 19:48 ` [PATCH v14 43/70] fs/proc/task_mmu: stop using linked list and highest_vm_end Liam Howlett
2022-09-06 19:48 ` [PATCH v14 44/70] userfaultfd: use maple tree iterator to iterate VMAs Liam Howlett
2022-09-06 19:48 ` [PATCH v14 45/70] ipc/shm: use VMA iterator instead of linked list Liam Howlett
2022-09-06 19:48 ` [PATCH v14 46/70] acct: " Liam Howlett
2022-09-06 19:48 ` [PATCH v14 47/70] perf: use VMA iterator Liam Howlett
2022-09-06 19:48 ` [PATCH v14 50/70] bpf: remove VMA linked list Liam Howlett
2022-09-06 19:48 ` [PATCH v14 49/70] fork: use VMA iterator Liam Howlett
2022-09-06 19:48 ` [PATCH v14 48/70] sched: use maple tree iterator to walk VMAs Liam Howlett
2022-09-06 19:49 ` [PATCH v14 52/70] mm/khugepaged: stop using vma linked list Liam Howlett
2022-09-06 19:49 ` [PATCH v14 51/70] mm/gup: use maple tree navigation instead of " Liam Howlett
2022-09-06 19:49 ` [PATCH v14 55/70] mm/memcontrol: stop using mm->highest_vm_end Liam Howlett
2022-09-06 19:49 ` [PATCH v14 54/70] mm/madvise: use vma_find() instead of vma linked list Liam Howlett
2022-09-06 19:49 ` [PATCH v14 53/70] mm/ksm: use vma iterators " Liam Howlett
2022-09-06 19:49 ` [PATCH v14 57/70] mm/mlock: use vma iterator and maple state " Liam Howlett
2022-09-06 19:49 ` [PATCH v14 56/70] mm/mempolicy: use vma iterator & " Liam Howlett
2022-09-06 19:49 ` [PATCH v14 58/70] mm/mprotect: use maple tree navigation instead of VMA " Liam Howlett
2022-09-06 19:49 ` [PATCH v14 59/70] mm/mremap: use vma_find_intersection() instead of vma " Liam Howlett
2022-09-06 19:49 ` [PATCH v14 60/70] mm/msync: use vma_find() " Liam Howlett
2022-09-06 19:49 ` [PATCH v14 61/70] mm/oom_kill: use vma iterators " Liam Howlett
2022-09-06 19:49 ` [PATCH v14 64/70] i915: use the VMA iterator Liam Howlett
2022-09-06 19:49 ` [PATCH v14 63/70] mm/swapfile: use vma iterator instead of vma linked list Liam Howlett
2022-09-06 19:49 ` [PATCH v14 62/70] mm/pagewalk: use vma_find() " Liam Howlett
2022-09-06 19:49 ` [PATCH v14 65/70] nommu: remove uses of VMA " Liam Howlett
2022-09-06 19:49 ` [PATCH v14 67/70] mm/vmscan: Use vma iterator instead of vm_next Liam Howlett
2022-09-12 6:55 ` Yu Zhao
2022-09-12 7:13 ` Yu Zhao
2022-09-12 7:14 ` Liam Howlett
2022-09-12 19:45 ` Andrew Morton
2022-09-12 20:01 ` Yu Zhao
2022-09-12 21:03 ` Andrew Morton
2022-09-13 3:39 ` Yu Zhao
2022-09-06 19:49 ` [PATCH v14 66/70] riscv: use vma iterator for vdso Liam Howlett
2022-09-06 19:49 ` [PATCH v14 70/70] mm/mmap.c: pass in mapping to __vma_link_file() Liam Howlett
2022-09-06 19:49 ` [PATCH v14 68/70] mm: remove the vma linked list Liam Howlett
2022-09-06 19:49 ` [PATCH v14 69/70] mm/mmap: drop range_has_overlap() function Liam Howlett
2022-09-06 23:51 ` [PATCH v14 00/70] Introducing the Maple Tree Andrew Morton
2022-09-07 0:24 ` Liam Howlett
2022-09-12 0:20 ` Andrew Morton
2022-09-15 18:03 ` Yu Zhao
2022-09-17 8:24 ` Yu Zhao
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