X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=lttng-ring-buffer-client.h;h=63f2b4ca7befa82da0b2fdaf265f1d8f127abe11;hb=aa5d4c0dc4ba7a1f48a8a5e7e19888addc4548f0;hp=4fffab981affbd2064bc2724bb03eabe67f0acc5;hpb=5594698f9c8ad13e0964c67946d1867df7757dae;p=lttng-modules.git

diff --git a/lttng-ring-buffer-client.h b/lttng-ring-buffer-client.h
index 4fffab98..63f2b4ca 100644
--- a/lttng-ring-buffer-client.h
+++ b/lttng-ring-buffer-client.h
@@ -22,12 +22,12 @@
 
 #include <linux/module.h>
 #include <linux/types.h>
-#include "lib/bitfield.h"
-#include "wrapper/vmalloc.h"	/* for wrapper_vmalloc_sync_all() */
-#include "wrapper/trace-clock.h"
-#include "lttng-events.h"
-#include "lttng-tracer.h"
-#include "wrapper/ringbuffer/frontend_types.h"
+#include <lib/bitfield.h>
+#include <wrapper/vmalloc.h>	/* for wrapper_vmalloc_sync_all() */
+#include <wrapper/trace-clock.h>
+#include <lttng-events.h>
+#include <lttng-tracer.h>
+#include <wrapper/ringbuffer/frontend_types.h>
 
 #define LTTNG_COMPACT_EVENT_BITS	5
 #define LTTNG_COMPACT_TSC_BITS		27
@@ -124,13 +124,14 @@ void ctx_record(struct lib_ring_buffer_ctx *bufctx,
  * contains.
  */
 static __inline__
-unsigned char record_header_size(const struct lib_ring_buffer_config *config,
+size_t record_header_size(const struct lib_ring_buffer_config *config,
 				 struct channel *chan, size_t offset,
 				 size_t *pre_header_padding,
 				 struct lib_ring_buffer_ctx *ctx)
 {
 	struct lttng_channel *lttng_chan = channel_get_private(chan);
-	struct lttng_event *event = ctx->priv;
+	struct lttng_probe_ctx *lttng_probe_ctx = ctx->priv;
+	struct lttng_event *event = lttng_probe_ctx->event;
 	size_t orig_offset = offset;
 	size_t padding;
 
@@ -169,14 +170,14 @@ unsigned char record_header_size(const struct lib_ring_buffer_config *config,
 		padding = 0;
 		WARN_ON_ONCE(1);
 	}
-	offset += ctx_get_size(offset, event->ctx);
 	offset += ctx_get_size(offset, lttng_chan->ctx);
+	offset += ctx_get_size(offset, event->ctx);
 
 	*pre_header_padding = padding;
 	return offset - orig_offset;
 }
 
-#include "wrapper/ringbuffer/api.h"
+#include <wrapper/ringbuffer/api.h>
 
 static
 void lttng_write_event_header_slow(const struct lib_ring_buffer_config *config,
@@ -198,7 +199,8 @@ void lttng_write_event_header(const struct lib_ring_buffer_config *config,
 			    uint32_t event_id)
 {
 	struct lttng_channel *lttng_chan = channel_get_private(ctx->chan);
-	struct lttng_event *event = ctx->priv;
+	struct lttng_probe_ctx *lttng_probe_ctx = ctx->priv;
+	struct lttng_event *event = lttng_probe_ctx->event;
 
 	if (unlikely(ctx->rflags))
 		goto slow_path;
@@ -249,7 +251,8 @@ void lttng_write_event_header_slow(const struct lib_ring_buffer_config *config,
 				 uint32_t event_id)
 {
 	struct lttng_channel *lttng_chan = channel_get_private(ctx->chan);
-	struct lttng_event *event = ctx->priv;
+	struct lttng_probe_ctx *lttng_probe_ctx = ctx->priv;
+	struct lttng_event *event = lttng_probe_ctx->event;
 
 	switch (lttng_chan->header_type) {
 	case 1:	/* compact */
@@ -603,7 +606,7 @@ int lttng_event_reserve(struct lib_ring_buffer_ctx *ctx,
 	int ret, cpu;
 
 	cpu = lib_ring_buffer_get_cpu(&client_config);
-	if (cpu < 0)
+	if (unlikely(cpu < 0))
 		return -EPERM;
 	ctx->cpu = cpu;
 
@@ -621,8 +624,10 @@ int lttng_event_reserve(struct lib_ring_buffer_ctx *ctx,
 	}
 
 	ret = lib_ring_buffer_reserve(&client_config, ctx);
-	if (ret)
+	if (unlikely(ret))
 		goto put;
+	lib_ring_buffer_backend_get_pages(&client_config, ctx,
+			&ctx->backend_pages);
 	lttng_write_event_header(&client_config, ctx, event_id);
 	return 0;
 put: