X-Git-Url: http://git.lttng.org/?a=blobdiff_plain;ds=sidebyside;f=lttng-context-vtid.c;h=8fd68a8c27041f73d1ac0bed6c4bff2e5a433a08;hb=HEAD;hp=425f36813750e04a2c025d118044d97f7ec5472f;hpb=39e088f37e7cb43f35af05b81bf1e23542623802;p=lttng-modules.git diff --git a/lttng-context-vtid.c b/lttng-context-vtid.c deleted file mode 100644 index 425f3681..00000000 --- a/lttng-context-vtid.c +++ /dev/null @@ -1,102 +0,0 @@ -/* - * lttng-context-vtid.c - * - * LTTng vTID context. - * - * Copyright (C) 2009-2012 Mathieu Desnoyers - * - * This library is free software; you can redistribute it and/or - * modify it under the terms of the GNU Lesser General Public - * License as published by the Free Software Foundation; only - * version 2.1 of the License. - * - * This library is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * Lesser General Public License for more details. - * - * You should have received a copy of the GNU Lesser General Public - * License along with this library; if not, write to the Free Software - * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA - */ - -#include -#include -#include -#include "lttng-events.h" -#include "wrapper/ringbuffer/frontend_types.h" -#include "wrapper/vmalloc.h" -#include "lttng-tracer.h" - -static -size_t vtid_get_size(size_t offset) -{ - size_t size = 0; - - size += lib_ring_buffer_align(offset, lttng_alignof(pid_t)); - size += sizeof(pid_t); - return size; -} - -static -void vtid_record(struct lttng_ctx_field *field, - struct lib_ring_buffer_ctx *ctx, - struct lttng_channel *chan) -{ - pid_t vtid; - - /* - * nsproxy can be NULL when scheduled out of exit. - */ - if (!current->nsproxy) - vtid = 0; - else - vtid = task_pid_vnr(current); - lib_ring_buffer_align_ctx(ctx, lttng_alignof(vtid)); - chan->ops->event_write(ctx, &vtid, sizeof(vtid)); -} - -static -void vtid_get_value(struct lttng_ctx_field *field, - struct lttng_probe_ctx *lttng_probe_ctx, - union lttng_ctx_value *value) -{ - pid_t vtid; - - /* - * nsproxy can be NULL when scheduled out of exit. - */ - if (!current->nsproxy) - vtid = 0; - else - vtid = task_pid_vnr(current); - value->s64 = vtid; -} - -int lttng_add_vtid_to_ctx(struct lttng_ctx **ctx) -{ - struct lttng_ctx_field *field; - - field = lttng_append_context(ctx); - if (!field) - return -ENOMEM; - if (lttng_find_context(*ctx, "vtid")) { - lttng_remove_context_field(ctx, field); - return -EEXIST; - } - field->event_field.name = "vtid"; - field->event_field.type.atype = atype_integer; - field->event_field.type.u.basic.integer.size = sizeof(pid_t) * CHAR_BIT; - field->event_field.type.u.basic.integer.alignment = lttng_alignof(pid_t) * CHAR_BIT; - field->event_field.type.u.basic.integer.signedness = lttng_is_signed_type(pid_t); - 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 = vtid_get_size; - field->record = vtid_record; - field->get_value = vtid_get_value; - lttng_context_update(*ctx); - wrapper_vmalloc_sync_all(); - return 0; -} -EXPORT_SYMBOL_GPL(lttng_add_vtid_to_ctx);