Rename "tsc" to "timestamp"

[lttng-modules.git] / lttng-context-vppid.c

diff --git a/lttng-context-vppid.c b/lttng-context-vppid.c
deleted file mode 100644 (file)
index 9e7e54d..0000000
--- a/lttng-context-vppid.c
+++ /dev/null
@@ -1,131 +0,0 @@
-/*
- * lttng-context-vppid.c
- *
- * LTTng vPPID context.
- *
- * Copyright (C) 2009-2012 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- *
- * 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 <linux/module.h>
-#include <linux/slab.h>
-#include <linux/sched.h>
-#include <linux/syscalls.h>
-#include "lttng-events.h"
-#include "wrapper/ringbuffer/frontend_types.h"
-#include "wrapper/vmalloc.h"
-#include "lttng-tracer.h"
-
-static
-size_t vppid_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 vppid_record(struct lttng_ctx_field *field,
-                 struct lib_ring_buffer_ctx *ctx,
-                 struct lttng_channel *chan)
-{
-       struct task_struct *parent;
-       pid_t vppid;
-
-       /*
-        * current nsproxy can be NULL when scheduled out of exit. pid_vnr uses
-        * the current thread nsproxy to perform the lookup.
-        */
-
-       /*
-        * TODO: when we eventually add RCU subsystem instrumentation,
-        * taking the rcu read lock here will trigger RCU tracing
-        * recursively. We should modify the kernel synchronization so
-        * it synchronizes both for RCU and RCU sched, and rely on
-        * rcu_read_lock_sched_notrace.
-        */
-
-       rcu_read_lock();
-       parent = rcu_dereference(current->real_parent);
-       if (!current->nsproxy)
-               vppid = 0;
-       else
-               vppid = task_tgid_vnr(parent);
-       rcu_read_unlock();
-       lib_ring_buffer_align_ctx(ctx, lttng_alignof(vppid));
-       chan->ops->event_write(ctx, &vppid, sizeof(vppid));
-}
-
-static
-void vppid_get_value(struct lttng_ctx_field *field,
-               struct lttng_probe_ctx *lttng_probe_ctx,
-               union lttng_ctx_value *value)
-{
-       struct task_struct *parent;
-       pid_t vppid;
-
-       /*
-        * current nsproxy can be NULL when scheduled out of exit. pid_vnr uses
-        * the current thread nsproxy to perform the lookup.
-        */
-
-       /*
-        * TODO: when we eventually add RCU subsystem instrumentation,
-        * taking the rcu read lock here will trigger RCU tracing
-        * recursively. We should modify the kernel synchronization so
-        * it synchronizes both for RCU and RCU sched, and rely on
-        * rcu_read_lock_sched_notrace.
-        */
-
-       rcu_read_lock();
-       parent = rcu_dereference(current->real_parent);
-       if (!current->nsproxy)
-               vppid = 0;
-       else
-               vppid = task_tgid_vnr(parent);
-       rcu_read_unlock();
-       value->s64 = vppid;
-}
-
-int lttng_add_vppid_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, "vppid")) {
-               lttng_remove_context_field(ctx, field);
-               return -EEXIST;
-       }
-       field->event_field.name = "vppid";
-       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 = vppid_get_size;
-       field->record = vppid_record;
-       field->get_value = vppid_get_value;
-       lttng_context_update(*ctx);
-       wrapper_vmalloc_sync_all();
-       return 0;
-}
-EXPORT_SYMBOL_GPL(lttng_add_vppid_to_ctx);