From: Philippe Gerum <[email protected]>
Signed-off-by: Philippe Gerum <[email protected]>
---
kernel/cobalt/debug.c | 4 ++--
kernel/cobalt/include/asm-generic/xenomai/wrappers.h | 7 +++++++
2 files changed, 9 insertions(+), 2 deletions(-)
diff --git a/kernel/cobalt/debug.c b/kernel/cobalt/debug.c
index 1e9edda99..f97144aeb 100644
--- a/kernel/cobalt/debug.c
+++ b/kernel/cobalt/debug.c
@@ -239,7 +239,7 @@ void xndebug_trace_relax(int nr, unsigned long *backtrace,
memset(&spot, 0, sizeof(spot));
mm = get_task_mm(current);
- down_read(&mm->mmap_sem);
+ mmap_read_lock(mm);
for (n = 0, depth = 0; n < nr; n++) {
pc = backtrace[n];
@@ -278,7 +278,7 @@ void xndebug_trace_relax(int nr, unsigned long *backtrace,
depth++;
}
- up_read(&mm->mmap_sem);
+ mmap_read_unlock(mm);
mmput(mm);
free_page((unsigned long)tmp);
diff --git a/kernel/cobalt/include/asm-generic/xenomai/wrappers.h
b/kernel/cobalt/include/asm-generic/xenomai/wrappers.h
index ac4e95aa0..cd22a8db5 100644
--- a/kernel/cobalt/include/asm-generic/xenomai/wrappers.h
+++ b/kernel/cobalt/include/asm-generic/xenomai/wrappers.h
@@ -176,6 +176,13 @@ devm_hwmon_device_register_with_groups(struct device *dev,
const char *name,
#define old_timeval32 compat_timeval
#endif
+#if LINUX_VERSION_CODE < KERNEL_VERSION(5,8,0)
+#define mmap_read_lock(__mm) down_read(&mm->mmap_sem)
+#define mmap_read_unlock(__mm) up_read(&mm->mmap_sem)
+#define mmap_write_lock(__mm) down_write(&mm->mmap_sem)
+#define mmap_write_unlock(__mm) up_write(&mm->mmap_sem)
+#endif
+
#if LINUX_VERSION_CODE < KERNEL_VERSION(5,8,0)
#define vmalloc_kernel(__size, __flags) __vmalloc(__size,
GFP_KERNEL|__flags, PAGE_KERNEL)
#else
--
2.29.2
