From: Michael Jeanson <mjeanson@efficios.com>
Date: Thu, 2 Jul 2020 15:21:42 +0000 (-0400)
Subject: fix: mm: remove vmalloc_sync_(un)mappings() (v5.8)
X-Git-Tag: v2.13.0-rc1~201
X-Git-Url: https://git.lttng.org./?a=commitdiff_plain;h=0dcc94fab9139ed71921e521f7fc6696808e22c1;p=lttng-modules.git

fix: mm: remove vmalloc_sync_(un)mappings() (v5.8)

See upstream commit:

  commit 73f693c3a705756032c2863bfb37570276902d7d
  Author: Joerg Roedel <jroedel@suse.de>
  Date:   Mon Jun 1 21:52:36 2020 -0700

    mm: remove vmalloc_sync_(un)mappings()

    These functions are not needed anymore because the vmalloc and ioremap
    mappings are now synchronized when they are created or torn down.

    Remove all callers and function definitions.

Signed-off-by: Michael Jeanson <mjeanson@efficios.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Change-Id: Ifdefa35b25b4906cde407360e608b77e47cc3808
---

diff --git a/include/wrapper/vmalloc.h b/include/wrapper/vmalloc.h
index 83b09d96..ff279bc1 100644
--- a/include/wrapper/vmalloc.h
+++ b/include/wrapper/vmalloc.h
@@ -22,7 +22,17 @@
 #include <wrapper/kallsyms.h>
 #include <lttng/kernel-version.h>
 
-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0) \
+#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)
+{}
+
+#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)            \