[v2,04/39] nodemask: Split out include/linux/nodemask_types.h

Commit Message

Suren Baghdasaryan Oct. 24, 2023, 1:46 p.m. UTC

From: Kent Overstreet <[e-mail]>

sched.h, which defines task_struct, needs nodemask_t - but sched.h is a
frequently used header and ideally shouldn't be pulling in any more code
that it needs to.

This splits out nodemask_types.h which has the definition sched.h needs,
which will avoid a circular header dependency in the alloc tagging patch
series, and as a bonus should speed up kernel build times.

Signed-off-by: Kent Overstreet <[e-mail]>
Signed-off-by: Suren Baghdasaryan <[e-mail]>
Cc: Ingo Molnar <[e-mail]>
Cc: Peter Zijlstra <[e-mail]>
---
 include/linux/nodemask.h       | 2 +-
 include/linux/nodemask_types.h | 9 +++++++++
 include/linux/sched.h          | 2 +-
 3 files changed, 11 insertions(+), 2 deletions(-)
 create mode 100644 include/linux/nodemask_types.h

Patch

diff --git a/include/linux/nodemask.h b/include/linux/nodemask.h
index 8d07116caaf1..b61438313a73 100644
--- a/include/linux/nodemask.h
+++ b/include/linux/nodemask.h
@@ -93,10 +93,10 @@ 
 #include <linux/threads.h>
 #include <linux/bitmap.h>
 #include <linux/minmax.h>
+#include <linux/nodemask_types.h>
 #include <linux/numa.h>
 #include <linux/random.h>
 
-typedef struct { DECLARE_BITMAP(bits, MAX_NUMNODES); } nodemask_t;
 extern nodemask_t _unused_nodemask_arg_;
 
 /**
diff --git a/include/linux/nodemask_types.h b/include/linux/nodemask_types.h
new file mode 100644
index 000000000000..84c2f47c4237
--- /dev/null
+++ b/include/linux/nodemask_types.h
@@ -0,0 +1,9 @@ 
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __LINUX_NODEMASK_TYPES_H
+#define __LINUX_NODEMASK_TYPES_H
+
+#include <linux/numa.h>
+
+typedef struct { DECLARE_BITMAP(bits, MAX_NUMNODES); } nodemask_t;
+
+#endif /* __LINUX_NODEMASK_TYPES_H */
diff --git a/include/linux/sched.h b/include/linux/sched.h
index 77f01ac385f7..12a2554a3164 100644
--- a/include/linux/sched.h
+++ b/include/linux/sched.h
@@ -20,7 +20,7 @@ 
 #include <linux/hrtimer.h>
 #include <linux/irqflags.h>
 #include <linux/seccomp.h>
-#include <linux/nodemask.h>
+#include <linux/nodemask_types.h>
 #include <linux/rcupdate.h>
 #include <linux/refcount.h>
 #include <linux/resource.h>