page alloc wrapper: Fix get_pfnblock_flags_mask prototype

[lttng-modules.git] / probes / lttng.c

diff --git a/probes/lttng.c b/probes/lttng.c
deleted file mode 100644 (file)
index 8810fa2..0000000
--- a/probes/lttng.c
+++ /dev/null
@@ -1,137 +0,0 @@
-/*
- * lttng.c
- *
- * LTTng logger ABI
- *
- * Copyright (C) 2008-2014 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/tracepoint.h>
-#include <linux/uaccess.h>
-#include <linux/gfp.h>
-#include <linux/fs.h>
-#include <linux/proc_fs.h>
-#include <linux/slab.h>
-#include <linux/mm.h>
-#include <wrapper/vmalloc.h>
-#include <lttng-events.h>
-
-#define TP_MODULE_NOAUTOLOAD
-#define LTTNG_PACKAGE_BUILD
-#define CREATE_TRACE_POINTS
-#define TRACE_INCLUDE_PATH instrumentation/events/lttng-module
-#define TRACE_INCLUDE_FILE lttng
-#define LTTNG_INSTRUMENTATION
-
-#include <instrumentation/events/lttng-module/lttng.h>
-
-/* Events written through logger are truncated at 1024 bytes */
-#define LTTNG_LOGGER_COUNT_MAX 1024
-#define LTTNG_LOGGER_FILE      "lttng-logger"
-
-DEFINE_TRACE(lttng_logger);
-
-static struct proc_dir_entry *lttng_logger_dentry;
-
-/**
- * lttng_logger_write - write a userspace string into the trace system
- * @file: file pointer
- * @user_buf: user string
- * @count: length to copy
- * @ppos: file position
- *
- * Copy a userspace string into a trace event named "lttng:logger".
- * Copies at most @count bytes into the event "msg" dynamic array.
- * Truncates the count at LTTNG_LOGGER_COUNT_MAX. Returns the number of
- * bytes copied from the source.
- * Return -1 on error, with EFAULT errno.
- */
-static
-ssize_t lttng_logger_write(struct file *file, const char __user *user_buf,
-                   size_t count, loff_t *ppos)
-{
-       unsigned int nr_pages = 1, i;
-       unsigned long uaddr = (unsigned long) user_buf;
-       struct page *pages[2];
-       ssize_t written;
-       int ret;
-
-       /* Truncate count */
-       if (unlikely(count > LTTNG_LOGGER_COUNT_MAX))
-               count = LTTNG_LOGGER_COUNT_MAX;
-
-       /* How many pages are we dealing with ? */
-       if (unlikely((uaddr & PAGE_MASK) != ((uaddr + count) & PAGE_MASK)))
-               nr_pages = 2;
-
-       /* Pin userspace pages */
-       ret = get_user_pages_fast(uaddr, nr_pages, 0, pages);
-       if (unlikely(ret < nr_pages)) {
-               if (ret > 0) {
-                       BUG_ON(ret != 1);
-                       put_page(pages[0]);
-               }
-               written = -EFAULT;
-               goto end;
-       }
-
-       /* Trace the event */
-       trace_lttng_logger(user_buf, count);
-       written = count;
-       *ppos += written;
-
-       for (i = 0; i < nr_pages; i++)
-               put_page(pages[i]);
-end:
-       return written;
-}
-
-static const struct file_operations lttng_logger_operations = {
-       .write = lttng_logger_write,
-};
-
-int __init lttng_logger_init(void)
-{
-       int ret = 0;
-
-       wrapper_vmalloc_sync_all();
-       lttng_logger_dentry = proc_create_data(LTTNG_LOGGER_FILE,
-                               S_IRUGO | S_IWUGO, NULL,
-                               &lttng_logger_operations, NULL);
-       if (!lttng_logger_dentry) {
-               printk(KERN_ERR "Error creating LTTng logger file\n");
-               ret = -ENOMEM;
-               goto error;
-       }
-       ret = __lttng_events_init__lttng();
-       if (ret)
-               goto error_events;
-       return ret;
-
-error_events:
-       remove_proc_entry("lttng-logger", NULL);
-error:
-       return ret;
-}
-
-void lttng_logger_exit(void)
-{
-       __lttng_events_exit__lttng();
-       if (lttng_logger_dentry)
-               remove_proc_entry("lttng-logger", NULL);
-}