X-Git-Url: http://git.liburcu.org/?a=blobdiff_plain;f=probes%2Flttng.c;h=c883429fa2e3401b83fb87181557213c008bdb40;hb=HEAD;hp=e571ceea6795433324d35c6f18fa00846b98439e;hpb=263b6c88138c3354d63dba3c70a965de94becd22;p=lttng-modules.git

diff --git a/probes/lttng.c b/probes/lttng.c
deleted file mode 100644
index e571ceea..00000000
--- a/probes/lttng.c
+++ /dev/null
@@ -1,158 +0,0 @@
-/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
- *
- * lttng.c
- *
- * LTTng logger ABI
- *
- * Copyright (C) 2008-2014 Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
- */
-
-#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 <linux/miscdevice.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)
-{
-	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,
-};
-
-/*
- * Linux 5.6 introduced a separate proc_ops struct for /proc operations
- * to decouple it from the vfs.
- */
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0))
-static const struct proc_ops lttng_logger_proc_ops = {
-	.proc_write = lttng_logger_write,
-};
-#else
-#define lttng_logger_proc_ops lttng_logger_operations
-#endif
-
-static struct miscdevice logger_dev = {
-	.minor = MISC_DYNAMIC_MINOR,
-	.name = "lttng-logger",
-	.mode = 0666,
-	.fops = &lttng_logger_operations
-};
-
-int __init lttng_logger_init(void)
-{
-	int ret = 0;
-
-	wrapper_vmalloc_sync_mappings();
-
-	/* /dev/lttng-logger */
-	ret = misc_register(&logger_dev);
-	if (ret) {
-		printk(KERN_ERR "Error creating LTTng logger device\n");
-		goto error;
-	}
-
-	/* /proc/lttng-logger */
-	lttng_logger_dentry = proc_create_data(LTTNG_LOGGER_FILE,
-				S_IRUGO | S_IWUGO, NULL,
-				&lttng_logger_proc_ops, NULL);
-	if (!lttng_logger_dentry) {
-		printk(KERN_ERR "Error creating LTTng logger proc file\n");
-		ret = -ENOMEM;
-		goto error_proc;
-	}
-
-	/* Init */
-	ret = __lttng_events_init__lttng();
-	if (ret)
-		goto error_events;
-	return ret;
-
-error_events:
-	remove_proc_entry("lttng-logger", NULL);
-error_proc:
-	misc_deregister(&logger_dev);
-error:
-	return ret;
-}
-
-void lttng_logger_exit(void)
-{
-	__lttng_events_exit__lttng();
-	if (lttng_logger_dentry)
-		remove_proc_entry("lttng-logger", NULL);
-	misc_deregister(&logger_dev);
-}