#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>
-static
-int (*wrapper_task_prio_sym)(struct task_struct *t);
-
-int wrapper_task_prio_init(void)
-{
- wrapper_task_prio_sym = (void *) kallsyms_lookup_funcptr("task_prio");
- if (!wrapper_task_prio_sym) {
- printk(KERN_WARNING "LTTng: task_prio symbol lookup failed.\n");
- return -EINVAL;
- }
- return 0;
-}
-
static
size_t prio_get_size(size_t offset)
{
{
int prio;
- prio = wrapper_task_prio_sym(current);
+ prio = task_prio(current);
lib_ring_buffer_align_ctx(ctx, lttng_alignof(prio));
chan->ops->event_write(ctx, &prio, sizeof(prio));
}
struct lttng_probe_ctx *lttng_probe_ctx,
union lttng_ctx_value *value)
{
- value->s64 = wrapper_task_prio_sym(current);
+ value->s64 = task_prio(current);
}
int lttng_add_prio_to_ctx(struct lttng_ctx **ctx)
{
struct lttng_ctx_field *field;
- int ret;
-
- if (!wrapper_task_prio_sym) {
- ret = wrapper_task_prio_init();
- if (ret)
- return ret;
- }
field = lttng_append_context(ctx);
if (!field)
}
field->event_field.name = "prio";
field->event_field.type.atype = atype_integer;
- field->event_field.type.u.basic.integer.size = sizeof(int) * CHAR_BIT;
- field->event_field.type.u.basic.integer.alignment = lttng_alignof(int) * CHAR_BIT;
- field->event_field.type.u.basic.integer.signedness = lttng_is_signed_type(int);
- field->event_field.type.u.basic.integer.reverse_byte_order = 0;
- field->event_field.type.u.basic.integer.base = 10;
- field->event_field.type.u.basic.integer.encoding = lttng_encode_none;
+ field->event_field.type.u.integer.size = sizeof(int) * CHAR_BIT;
+ field->event_field.type.u.integer.alignment = lttng_alignof(int) * CHAR_BIT;
+ field->event_field.type.u.integer.signedness = lttng_is_signed_type(int);
+ field->event_field.type.u.integer.reverse_byte_order = 0;
+ field->event_field.type.u.integer.base = 10;
+ field->event_field.type.u.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);