X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=lib%2Fringbuffer%2Fring_buffer_backend.c;h=94bdc10780ef850844a8d4dff4b7c141bf901da1;hb=67053c585d7407d38959833468c5d2bb2b347b54;hp=d4bec25ff956bfc21bc9c184b8230ca2963cbabc;hpb=7502f47afaf537bbb67050b17ea095bb3976bf91;p=lttng-modules.git

diff --git a/lib/ringbuffer/ring_buffer_backend.c b/lib/ringbuffer/ring_buffer_backend.c
index d4bec25f..94bdc107 100644
--- a/lib/ringbuffer/ring_buffer_backend.c
+++ b/lib/ringbuffer/ring_buffer_backend.c
@@ -12,12 +12,12 @@
 #include <linux/delay.h>
 #include <linux/errno.h>
 #include <linux/slab.h>
-#include <linux/cpu.h>
 #include <linux/mm.h>
 #include <linux/vmalloc.h>
 
+#include <wrapper/cpu.h>
 #include <wrapper/mm.h>
-#include <wrapper/vmalloc.h>	/* for wrapper_vmalloc_sync_all() */
+#include <wrapper/vmalloc.h>	/* for wrapper_vmalloc_sync_mappings() */
 #include <wrapper/ringbuffer/config.h>
 #include <wrapper/ringbuffer/backend.h>
 #include <wrapper/ringbuffer/frontend.h>
@@ -156,7 +156,7 @@ int lib_ring_buffer_backend_allocate(const struct lib_ring_buffer_config *config
 	 * If kmalloc ever uses vmalloc underneath, make sure the buffer pages
 	 * will not fault.
 	 */
-	wrapper_vmalloc_sync_all();
+	wrapper_vmalloc_sync_mappings();
 	wrapper_clear_current_oom_origin();
 	vfree(pages);
 	return 0;
@@ -259,7 +259,7 @@ void channel_backend_reset(struct channel_backend *chanb)
 	chanb->start_tsc = config->cb.ring_buffer_clock_read(chan);
 }
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0))
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0))
 
 /*
  * No need to implement a "dead" callback to do a buffer switch here,
@@ -291,7 +291,7 @@ int lttng_cpuhp_rb_backend_prepare(unsigned int cpu,
 }
 EXPORT_SYMBOL_GPL(lttng_cpuhp_rb_backend_prepare);
 
-#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
+#else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) */
 
 #ifdef CONFIG_HOTPLUG_CPU
 
@@ -341,7 +341,7 @@ int lib_ring_buffer_cpu_hp_callback(struct notifier_block *nb,
 
 #endif
 
-#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
+#endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) */
 
 /**
  * channel_backend_init - initialize a channel backend
@@ -419,13 +419,13 @@ int channel_backend_init(struct channel_backend *chanb,
 		if (!chanb->buf)
 			goto free_cpumask;
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0))
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0))
 		chanb->cpuhp_prepare.component = LTTNG_RING_BUFFER_BACKEND;
 		ret = cpuhp_state_add_instance(lttng_rb_hp_prepare,
 			&chanb->cpuhp_prepare.node);
 		if (ret)
 			goto free_bufs;
-#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
+#else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) */
 
 		{
 			/*
@@ -445,14 +445,14 @@ int channel_backend_init(struct channel_backend *chanb,
 			chanb->cpu_hp_notifier.priority = 5;
 			register_hotcpu_notifier(&chanb->cpu_hp_notifier);
 
-			get_online_cpus();
+			lttng_cpus_read_lock();
 			for_each_online_cpu(i) {
 				ret = lib_ring_buffer_create(per_cpu_ptr(chanb->buf, i),
 							 chanb, i);
 				if (ret)
 					goto free_bufs;	/* cpu hotplug locked */
 			}
-			put_online_cpus();
+			lttng_cpus_read_unlock();
 #else
 			for_each_possible_cpu(i) {
 				ret = lib_ring_buffer_create(per_cpu_ptr(chanb->buf, i),
@@ -462,7 +462,7 @@ int channel_backend_init(struct channel_backend *chanb,
 			}
 #endif
 		}
-#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
+#endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) */
 	} else {
 		chanb->buf = kzalloc(sizeof(struct lib_ring_buffer), GFP_KERNEL);
 		if (!chanb->buf)
@@ -477,18 +477,18 @@ 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))
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0))
 		/*
 		 * 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)) */
+#else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) */
 #ifdef CONFIG_HOTPLUG_CPU
-		put_online_cpus();
+		lttng_cpus_read_unlock();
 		unregister_hotcpu_notifier(&chanb->cpu_hp_notifier);
 #endif
-#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
+#endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) */
 		for_each_possible_cpu(i) {
 			struct lib_ring_buffer *buf =
 				per_cpu_ptr(chanb->buf, i);
@@ -517,15 +517,15 @@ void channel_backend_unregister_notifiers(struct channel_backend *chanb)
 	const struct lib_ring_buffer_config *config = &chanb->config;
 
 	if (config->alloc == RING_BUFFER_ALLOC_PER_CPU) {
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0))
+#if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0))
 		int ret;
 
 		ret = cpuhp_state_remove_instance(lttng_rb_hp_prepare,
 				&chanb->cpuhp_prepare.node);
 		WARN_ON(ret);
-#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
+#else /* #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) */
 		unregister_hotcpu_notifier(&chanb->cpu_hp_notifier);
-#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(4,10,0)) */
+#endif /* #else #if (LTTNG_LINUX_VERSION_CODE >= LTTNG_KERNEL_VERSION(4,10,0)) */
 	}
 }