Update for kernel 5.7: use vmalloc_sync_mappings on kernels >= 5.7

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

diff --git a/lttng-abi.c b/lttng-abi.c
index 9d610e9346f53c3669b5ca2b5c7de46475eed6d0..4051264e5e908fddd8c98e1ec13607dec63dc67f 100644 (file)
--- a/lttng-abi.c
+++ b/lttng-abi.c
@@ -1,4 +1,4 @@
-/* SPDX-License-Identifier: (GPL-2.0 or LGPL-2.1)
+/* SPDX-License-Identifier: (GPL-2.0-only or LGPL-2.1-only)
  *
  * lttng-abi.c
  *
@@ -30,7 +30,7 @@
 #include <linux/uaccess.h>
 #include <linux/slab.h>
 #include <linux/err.h>
-#include <wrapper/vmalloc.h>   /* for wrapper_vmalloc_sync_all() */
+#include <wrapper/vmalloc.h>   /* for wrapper_vmalloc_sync_mappings() */
 #include <wrapper/ringbuffer/vfs.h>
 #include <wrapper/ringbuffer/backend.h>
 #include <wrapper/ringbuffer/frontend.h>
@@ -1221,7 +1221,8 @@ int lttng_abi_create_event(struct file *channel_file,
                event_param->u.kprobe.symbol_name[LTTNG_KERNEL_SYM_NAME_LEN - 1] = '\0';
                break;
        case LTTNG_KERNEL_FUNCTION:
-               event_param->u.ftrace.symbol_name[LTTNG_KERNEL_SYM_NAME_LEN - 1] = '\0';
+               WARN_ON_ONCE(1);
+               /* Not implemented. */
                break;
        default:
                break;
@@ -1372,9 +1373,8 @@ long lttng_channel_ioctl(struct file *file, unsigned int cmd, unsigned long arg)
                                sizeof(uevent_param->u.kretprobe.symbol_name));
                        break;
                case LTTNG_KERNEL_FUNCTION:
-                       memcpy(uevent_param->u.ftrace.symbol_name,
-                                       old_uevent_param->u.ftrace.symbol_name,
-                                       sizeof(uevent_param->u.ftrace.symbol_name));
+                       WARN_ON_ONCE(1);
+                       /* Not implemented. */
                        break;
                default:
                        break;
@@ -1938,7 +1938,7 @@ int __init lttng_abi_init(void)
 {
        int ret = 0;
 
-       wrapper_vmalloc_sync_all();
+       wrapper_vmalloc_sync_mappings();
        lttng_clock_ref();
 
        ret = lttng_tp_mempool_init();