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Fix: out of memory error handling
[lttng-modules.git]
/
lib
/
ringbuffer
/
ring_buffer_backend.c
diff --git
a/lib/ringbuffer/ring_buffer_backend.c
b/lib/ringbuffer/ring_buffer_backend.c
index 54c62a996764ee2ee004ee96f3a188801ae6d871..9d199e516aacbaf009538faf394671113e18bf70 100644
(file)
--- a/
lib/ringbuffer/ring_buffer_backend.c
+++ b/
lib/ringbuffer/ring_buffer_backend.c
@@
-455,9
+455,11
@@
int channel_backend_init(struct channel_backend *chanb,
free_bufs:
if (config->alloc == RING_BUFFER_ALLOC_PER_CPU) {
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0))
free_bufs:
if (config->alloc == RING_BUFFER_ALLOC_PER_CPU) {
#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0))
- ret = cpuhp_state_remove_instance(lttng_rb_hp_prepare,
- &chanb->cpuhp_prepare.node);
- WARN_ON(ret);
+ /*
+ * Teardown of lttng_rb_hp_prepare instance
+ * on "add" error is handled within cpu hotplug,
+ * no teardown to do from the caller.
+ */
#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
#ifdef CONFIG_HOTPLUG_CPU
put_online_cpus();
#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
#ifdef CONFIG_HOTPLUG_CPU
put_online_cpus();
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