Commit 5dd43ce2 authored by Ingo Molnar's avatar Ingo Molnar
Browse files

sched/wait: Split out the wait_bit*() APIs from <linux/wait.h> into <linux/wait_bit.h> 



The wait_bit*() types and APIs are mixed into wait.h, but they
are a pretty orthogonal extension of wait-queues.

Furthermore, only about 50 kernel files use these APIs, while
over 1000 use the regular wait-queue functionality.

So clean up the main wait.h by moving the wait-bit functionality
out of it, into a separate .h and .c file:

  include/linux/wait_bit.h  for types and APIs
  kernel/sched/wait_bit.c   for the implementation

Update all header dependencies.

This reduces the size of wait.h rather significantly, by about 30%.

Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: default avatarIngo Molnar <mingo@kernel.org>
parent 4b1c480b

fs/cachefiles/internal.h

+1 −1
Original line number Diff line number Diff line
@@ -18,7 +18,7 @@ 


#include <linux/fscache-cache.h>

#include <linux/timer.h>

#include <linux/wait.h>

#include <linux/wait_bit.h>

#include <linux/cred.h>

#include <linux/workqueue.h>

#include <linux/security.h>

fs/cifs/inode.c

+1 −0
Original line number Diff line number Diff line
@@ -24,6 +24,7 @@ 
#include <linux/pagemap.h>

#include <linux/freezer.h>

#include <linux/sched/signal.h>

#include <linux/wait_bit.h>



#include <asm/div64.h>

#include "cifsfs.h"

fs/nfs/internal.h

+1 −0
Original line number Diff line number Diff line
@@ -7,6 +7,7 @@ 
#include <linux/security.h>

#include <linux/crc32.h>

#include <linux/nfs_page.h>

#include <linux/wait_bit.h>



#define NFS_MS_MASK (MS_RDONLY|MS_NOSUID|MS_NODEV|MS_NOEXEC|MS_SYNCHRONOUS)

include/linux/fs.h

+1 −1
Original line number Diff line number Diff line
@@ -2,7 +2,7 @@ 
#define _LINUX_FS_H



#include <linux/linkage.h>

#include <linux/wait.h>

#include <linux/wait_bit.h>

#include <linux/kdev_t.h>

#include <linux/dcache.h>

#include <linux/path.h>

include/linux/sunrpc/sched.h

+1 −1
Original line number Diff line number Diff line
@@ -13,7 +13,7 @@ 
#include <linux/ktime.h>

#include <linux/sunrpc/types.h>

#include <linux/spinlock.h>

#include <linux/wait.h>

#include <linux/wait_bit.h>

#include <linux/workqueue.h>

#include <linux/sunrpc/xdr.h>

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