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 058c022e9988da3064d14fcd2f8ab73f7f9aa422..816e6fddf57848d4e68e323b3f902fe3e2bff515 100644 (file)
--- a/lttng-abi.c
+++ b/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>
@@ -1115,7 +1115,8 @@ 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;
@@ -1266,9 +1267,8 @@ 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;
@@ -1832,7 +1832,7 @@ 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();