From: Michael Jeanson <mjeanson@efficios.com>
Date: Tue, 7 Jul 2020 15:15:39 +0000 (-0400)
Subject: fix: vmalloc on v5.8 without KALLSYMS
X-Git-Tag: v2.11.5~11
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=02f0c95cdc69859fa9b77e2458cf05352dad4d92;p=lttng-modules.git

fix: vmalloc on v5.8 without KALLSYMS

Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Change-Id: Ic945dad92e78a5bc2895a969a10c527e1349decf
---

diff --git a/wrapper/vmalloc.h b/wrapper/vmalloc.h
index 362054b1..21e9bda2 100644
--- a/wrapper/vmalloc.h
+++ b/wrapper/vmalloc.h
@@ -117,9 +117,19 @@ void __canary__vmalloc_sync_all(void)
 
 #endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0)) */
 
-#else
+#else /* CONFIG_KALLSYMS */
+
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,8,0))
+
+/*
+ * wrapper_vmalloc_sync_mappings was removed in v5.8, the vmalloc mappings
+ * are now synchronized when they are created or torn down.
+ */
+static inline
+void wrapper_vmalloc_sync_mappings(void)
+{}
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0) \
+#elif (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0) \
   || LTTNG_KERNEL_RANGE(5,5,12, 5,6,0)            \
   || LTTNG_KERNEL_RANGE(5,4,28, 5,5,0)            \
   || LTTNG_KERNEL_RANGE(5,2,37, 5,3,0)            \