Fix: Use vmalloc_sync_mappings on kernel 5.6 as well

Upstream commit [1], that got rid of vmalloc_sync_all and introduced
vmalloc_sync_mappings, is a v5.6 commit:
$ git tag --contains 763802b53a427ed3cbd419dbba255c414fdd9e7c
v5.6
v5.6-rc7
v5.7-rc1
v5.7-rc2
v5.7-rc3

Extend the LINUX_VERSION_CODE check to v5.6 to fix the following warnings:
...
[  483.242037] LTTng: vmalloc_sync_all symbol lookup failed.
[  483.257056] Page fault handler and NMI tracing might trigger faults.
...

[1] https://github.com/torvalds/linux/commit/763802b53a427ed3cbd419dbba255c414fdd9e7c

Signed-off-by: Ovidiu Panait <ovidiu.panait@windriver.com>
Signed-off-by: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>

diff --git a/wrapper/vmalloc.h b/wrapper/vmalloc.h
index 5d0b38987d6b4d0f5cee6a0b6f8db696564b3a7f..d905f603379c33577490633da9d1986cd72e2379 100644 (file)
--- a/wrapper/vmalloc.h
+++ b/wrapper/vmalloc.h
@@ -21,7 +21,7 @@
 #include <linux/kallsyms.h>
 #include <wrapper/kallsyms.h>
 
 #include <linux/kallsyms.h>
 #include <wrapper/kallsyms.h>
 

-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,7,0))
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0))

 
 static inline
 void wrapper_vmalloc_sync_mappings(void)
 
 static inline
 void wrapper_vmalloc_sync_mappings(void)


@@ -43,7 +43,7 @@ void wrapper_vmalloc_sync_mappings(void)
        }
 }
 
        }
 }
 

-#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,7,0)) */
+#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0)) */

 
 /*
  * Map vmalloc_sync_mappings to vmalloc_sync_all() on kernels before 5.7.
 
 /*
  * Map vmalloc_sync_mappings to vmalloc_sync_all() on kernels before 5.7.


@@ -68,11 +68,11 @@ void wrapper_vmalloc_sync_mappings(void)
        }
 }
 
        }
 }
 

-#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,7,0)) */
+#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0)) */

 
 #else
 
 
 #else
 

-#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,7,0))
+#if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0))

 
 static inline
 void wrapper_vmalloc_sync_mappings(void)
 
 static inline
 void wrapper_vmalloc_sync_mappings(void)


@@ -80,7 +80,7 @@ void wrapper_vmalloc_sync_mappings(void)
        return vmalloc_sync_mappings();
 }
 
        return vmalloc_sync_mappings();
 }
 

-#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,7,0)) */
+#else /* #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0)) */

 
 static inline
 void wrapper_vmalloc_sync_mappings(void)
 
 static inline
 void wrapper_vmalloc_sync_mappings(void)


@@ -88,7 +88,7 @@ void wrapper_vmalloc_sync_mappings(void)
        return vmalloc_sync_all();
 }
 
        return vmalloc_sync_all();
 }
 

-#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,7,0)) */
+#endif /* #else #if (LINUX_VERSION_CODE >= KERNEL_VERSION(5,6,0)) */

 
 #endif
 
 
 #endif