When CONFIG_HAVE_MEMORYLESS_NODES is enabled, cpu_to_node()/numa_node_id()
may return a node without memory, and later cause system failure/panic
when calling kmalloc_node() and friends with returned node id.
So use cpu_to_mem()/numa_mem_id() instead to get the nearest node with
memory for the/current cpu.
If CONFIG_HAVE_MEMORYLESS_NODES is disabled, cpu_to_mem()/numa_mem_id()
is the same as cpu_to_node()/numa_node_id().
Signed-off-by: Jiang Liu <jiang.liu@xxxxxxxxxxxxxxx>
---
kernel/trace/ring_buffer.c | 12 ++++++------
kernel/trace/trace_uprobe.c | 2 +-
2 files changed, 7 insertions(+), 7 deletions(-)
diff --git a/kernel/trace/ring_buffer.c b/kernel/trace/ring_buffer.c
index 7c56c3d06943..38c51583f968 100644
--- a/kernel/trace/ring_buffer.c
+++ b/kernel/trace/ring_buffer.c
@@ -1124,13 +1124,13 @@ static int __rb_allocate_pages(int nr_pages, struct list_head *pages, int cpu)
*/
bpage = kzalloc_node(ALIGN(sizeof(*bpage), cache_line_size()),
GFP_KERNEL | __GFP_NORETRY,
- cpu_to_node(cpu));
+ cpu_to_mem(cpu));
if (!bpage)
goto free_pages;
list_add(&bpage->list, pages);
- page = alloc_pages_node(cpu_to_node(cpu),
+ page = alloc_pages_node(cpu_to_mem(cpu),
GFP_KERNEL | __GFP_NORETRY, 0);
if (!page)
goto free_pages;
@@ -1183,7 +1183,7 @@ rb_allocate_cpu_buffer(struct ring_buffer *buffer, int nr_pages, int cpu)
int ret;
cpu_buffer = kzalloc_node(ALIGN(sizeof(*cpu_buffer), cache_line_size()),
- GFP_KERNEL, cpu_to_node(cpu));
+ GFP_KERNEL, cpu_to_mem(cpu));
if (!cpu_buffer)
return NULL;
@@ -1198,14 +1198,14 @@ rb_allocate_cpu_buffer(struct ring_buffer *buffer, int nr_pages, int cpu)
init_waitqueue_head(&cpu_buffer->irq_work.waiters);
bpage = kzalloc_node(ALIGN(sizeof(*bpage), cache_line_size()),
- GFP_KERNEL, cpu_to_node(cpu));
+ GFP_KERNEL, cpu_to_mem(cpu));
if (!bpage)
goto fail_free_buffer;
rb_check_bpage(cpu_buffer, bpage);
cpu_buffer->reader_page = bpage;
- page = alloc_pages_node(cpu_to_node(cpu), GFP_KERNEL, 0);
+ page = alloc_pages_node(cpu_to_mem(cpu), GFP_KERNEL, 0);
if (!page)
goto fail_free_reader;
bpage->page = page_address(page);
@@ -4378,7 +4378,7 @@ void *ring_buffer_alloc_read_page(struct ring_buffer *buffer, int cpu)
struct buffer_data_page *bpage;
struct page *page;
- page = alloc_pages_node(cpu_to_node(cpu),
+ page = alloc_pages_node(cpu_to_mem(cpu),
GFP_KERNEL | __GFP_NORETRY, 0);
if (!page)
return NULL;
diff --git a/kernel/trace/trace_uprobe.c b/kernel/trace/trace_uprobe.c
index 3c9b97e6b1f4..e585fb67472b 100644
--- a/kernel/trace/trace_uprobe.c
+++ b/kernel/trace/trace_uprobe.c
@@ -692,7 +692,7 @@ static int uprobe_buffer_init(void)
return -ENOMEM;
for_each_possible_cpu(cpu) {
- struct page *p = alloc_pages_node(cpu_to_node(cpu),
+ struct page *p = alloc_pages_node(cpu_to_mem(cpu),
GFP_KERNEL, 0);
if (p == NULL) {
err_cpu = cpu;
--
1.7.10.4
--
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