X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;ds=sidebyside;f=lttng-context-prio.c;h=b5d21e7e9438bafee3779d483532745f1ec1e65b;hb=HEAD;hp=1ee3a54daf2c33b331a1a3d97e247478b8a65679;hpb=c539a324b020171c10d0fcb100892ac93c17e9e7;p=lttng-modules.git diff --git a/lttng-context-prio.c b/lttng-context-prio.c deleted file mode 100644 index 1ee3a54d..00000000 --- a/lttng-context-prio.c +++ /dev/null @@ -1,89 +0,0 @@ -/* - * (C) Copyright 2009-2011 - - * Mathieu Desnoyers - * - * LTTng priority context. - * - * Dual LGPL v2.1/GPL v2 license. - */ - -#include -#include -#include -#include "ltt-events.h" -#include "wrapper/ringbuffer/frontend_types.h" -#include "wrapper/vmalloc.h" -#include "wrapper/kallsyms.h" -#include "ltt-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) -{ - size_t size = 0; - - size += lib_ring_buffer_align(offset, ltt_alignof(int)); - size += sizeof(int); - return size; -} - -static -void prio_record(struct lttng_ctx_field *field, - struct lib_ring_buffer_ctx *ctx, - struct ltt_channel *chan) -{ - int prio; - - prio = wrapper_task_prio_sym(current); - lib_ring_buffer_align_ctx(ctx, ltt_alignof(prio)); - chan->ops->event_write(ctx, &prio, sizeof(prio)); -} - -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) - return -ENOMEM; - if (lttng_find_context(*ctx, "prio")) { - lttng_remove_context_field(ctx, field); - return -EEXIST; - } - 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 = ltt_alignof(int) * CHAR_BIT; - field->event_field.type.u.basic.integer.signedness = 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->get_size = prio_get_size; - field->record = prio_record; - 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");