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Fix: Build ftrace probe on kernels prior to 4.12
[lttng-modules.git]
/
lttng-context-prio.c
diff --git
a/lttng-context-prio.c
b/lttng-context-prio.c
index fa30ab5071774a207332d17a1c753e6f17594eff..8a0839cf04d73f40eecaefda1784c473d66dceaf 100644
(file)
--- a/
lttng-context-prio.c
+++ b/
lttng-context-prio.c
@@
-23,11
+23,11
@@
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/sched.h>
#include <linux/module.h>
#include <linux/slab.h>
#include <linux/sched.h>
-#include
"lttng-events.h"
-#include
"wrapper/ringbuffer/frontend_types.h"
-#include
"wrapper/vmalloc.h"
-#include
"wrapper/kallsyms.h"
-#include
"lttng-tracer.h"
+#include
<lttng-events.h>
+#include
<wrapper/ringbuffer/frontend_types.h>
+#include
<wrapper/vmalloc.h>
+#include
<wrapper/kallsyms.h>
+#include
<lttng-tracer.h>
static
int (*wrapper_task_prio_sym)(struct task_struct *t);
static
int (*wrapper_task_prio_sym)(struct task_struct *t);
@@
-64,6
+64,14
@@
void prio_record(struct lttng_ctx_field *field,
chan->ops->event_write(ctx, &prio, sizeof(prio));
}
chan->ops->event_write(ctx, &prio, sizeof(prio));
}
+static
+void prio_get_value(struct lttng_ctx_field *field,
+ struct lttng_probe_ctx *lttng_probe_ctx,
+ union lttng_ctx_value *value)
+{
+ value->s64 = wrapper_task_prio_sym(current);
+}
+
int lttng_add_prio_to_ctx(struct lttng_ctx **ctx)
{
struct lttng_ctx_field *field;
int lttng_add_prio_to_ctx(struct lttng_ctx **ctx)
{
struct lttng_ctx_field *field;
@@
-92,11
+100,9
@@
int lttng_add_prio_to_ctx(struct lttng_ctx **ctx)
field->event_field.type.u.basic.integer.encoding = lttng_encode_none;
field->get_size = prio_get_size;
field->record = prio_record;
field->event_field.type.u.basic.integer.encoding = lttng_encode_none;
field->get_size = prio_get_size;
field->record = prio_record;
+ field->get_value = prio_get_value;
+ lttng_context_update(*ctx);
wrapper_vmalloc_sync_all();
return 0;
}
EXPORT_SYMBOL_GPL(lttng_add_prio_to_ctx);
wrapper_vmalloc_sync_all();
return 0;
}
EXPORT_SYMBOL_GPL(lttng_add_prio_to_ctx);
-
-MODULE_LICENSE("GPL and additional rights");
-MODULE_AUTHOR("Mathieu Desnoyers");
-MODULE_DESCRIPTION("Linux Trace Toolkit Priority Context");
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