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From: Kent Overstreet <kent.overstreet@linux.dev>
To: linux-kernel@vger.kernel.org,
	linux-mm@kvack.org,
	linux-fsdevel@vger.kernel.org
Cc: Kent Overstreet <kent.overstreet@linux.dev>,
	tglx@linutronix.de,
	x86@kernel.org,
	tj@kernel.org,
	peterz@infradead.org,
	mathieu.desnoyers@efficios.com,
	paulmck@kernel.org,
	keescook@chromium.org,
	dave.hansen@linux.intel.com,
	mingo@redhat.com,
	will@kernel.org,
	longman@redhat.com,
	boqun.feng@gmail.com,
	brauner@kernel.org,
	Suren Baghdasaryan <surenb@google.com>
Subject: [PATCH 11/50] nodemask: Split out include/linux/nodemask_types.h
Date: Fri, 15 Dec 2023 22:26:10 -0500
Message-ID: <20231216032651.3553101-1-kent.overstreet@linux.dev>
In-Reply-To: <20231216024834.3510073-1-kent.overstreet@linux.dev>
References: <20231216024834.3510073-1-kent.overstreet@linux.dev>
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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 <kent.overstreet@linux.dev>
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
---
 include/linux/nodemask.h       |  2 +-
 include/linux/nodemask_types.h | 10 ++++++++++
 include/linux/sched.h          |  2 +-
 3 files changed, 12 insertions(+), 2 deletions(-)
 create mode 100644 include/linux/nodemask_types.h

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..6b28d97ea6ed
--- /dev/null
+++ b/include/linux/nodemask_types.h
@@ -0,0 +1,10 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __LINUX_NODEMASK_TYPES_H
+#define __LINUX_NODEMASK_TYPES_H
+
+#include <linux/bitops.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 292c31697248..5a5b7b122682 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>
-- 
2.43.0