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Date:      Sun, 23 Aug 2020 21:46:48 +0000 (UTC)
From:      Edward Tomasz Napierala <trasz@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-12@freebsd.org
Subject:   svn commit: r364555 - stable/12/sys/compat/linux
Message-ID:  <202008232146.07NLkmJN073354@repo.freebsd.org>
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Author: trasz
Date: Sun Aug 23 21:46:48 2020
New Revision: 364555
URL: https://svnweb.freebsd.org/changeset/base/364555

Log:
  MFC r353724 by yuripv:
  
  linux: provide just one instance of futex_list
  
  Move futex_list definition to linux.c which is included once
  in linux.ko (i386) and in linux_common.ko (amd64 and aarch64)
  allowing 32/64 bit linux programs to access the same futexes
  in the latter case.
  
  PR:		240989

Modified:
  stable/12/sys/compat/linux/linux.c
  stable/12/sys/compat/linux/linux.h
  stable/12/sys/compat/linux/linux_futex.c
  stable/12/sys/compat/linux/linux_futex.h
Directory Properties:
  stable/12/   (props changed)

Modified: stable/12/sys/compat/linux/linux.c
==============================================================================
--- stable/12/sys/compat/linux/linux.c	Sun Aug 23 21:44:05 2020	(r364554)
+++ stable/12/sys/compat/linux/linux.c	Sun Aug 23 21:46:48 2020	(r364555)
@@ -43,6 +43,8 @@ __FBSDID("$FreeBSD$");
 #include <compat/linux/linux.h>
 #include <compat/linux/linux_common.h>
 
+struct futex_list futex_list;
+
 CTASSERT(LINUX_IFNAMSIZ == IFNAMSIZ);
 
 static int bsd_to_linux_sigtbl[LINUX_SIGTBLSZ] = {

Modified: stable/12/sys/compat/linux/linux.h
==============================================================================
--- stable/12/sys/compat/linux/linux.h	Sun Aug 23 21:44:05 2020	(r364554)
+++ stable/12/sys/compat/linux/linux.h	Sun Aug 23 21:46:48 2020	(r364555)
@@ -129,4 +129,6 @@ void bsd_to_linux_sigset(sigset_t *, l_sigset_t *);
 int linux_to_bsd_signal(int sig);
 int bsd_to_linux_signal(int sig);
 
+extern LIST_HEAD(futex_list, futex) futex_list;
+
 #endif /* _LINUX_MI_H_ */

Modified: stable/12/sys/compat/linux/linux_futex.c
==============================================================================
--- stable/12/sys/compat/linux/linux_futex.c	Sun Aug 23 21:44:05 2020	(r364554)
+++ stable/12/sys/compat/linux/linux_futex.c	Sun Aug 23 21:46:48 2020	(r364555)
@@ -207,8 +207,6 @@ struct futex {
 	TAILQ_HEAD(lf_waiting_proc, waiting_proc) f_waiting_proc;
 };
 
-struct futex_list futex_list;
-
 #define FUTEX_LOCK(f)		mtx_lock(&(f)->f_lck)
 #define FUTEX_LOCKED(f)		mtx_owned(&(f)->f_lck)
 #define FUTEX_UNLOCK(f)		mtx_unlock(&(f)->f_lck)

Modified: stable/12/sys/compat/linux/linux_futex.h
==============================================================================
--- stable/12/sys/compat/linux/linux_futex.h	Sun Aug 23 21:44:05 2020	(r364554)
+++ stable/12/sys/compat/linux/linux_futex.h	Sun Aug 23 21:46:48 2020	(r364555)
@@ -38,7 +38,6 @@
 #ifndef _LINUX_FUTEX_H
 #define _LINUX_FUTEX_H
 
-extern LIST_HEAD(futex_list, futex) futex_list;
 extern struct mtx futex_mtx;
 
 #define LINUX_FUTEX_WAIT		 0

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