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Date:      Sat, 22 Feb 2020 20:43:04 +0000 (UTC)
From:      Konstantin Belousov <kib@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org
Subject:   svn commit: r358251 - in head/sys: kern sys
Message-ID:  <202002222043.01MKh4V4036511@repo.freebsd.org>
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Author: kib
Date: Sat Feb 22 20:43:04 2020
New Revision: 358251
URL: https://svnweb.freebsd.org/changeset/base/358251

Log:
  Add td_pflags2, yet another thread-private flags word.
  
  There is no more free bits in td_pflags.
  
  Tested by:	pho
  Sponsored by:	The FreeBSD Foundation
  MFC after:	1 week

Modified:
  head/sys/kern/kern_thread.c
  head/sys/sys/proc.h

Modified: head/sys/kern/kern_thread.c
==============================================================================
--- head/sys/kern/kern_thread.c	Sat Feb 22 17:56:09 2020	(r358250)
+++ head/sys/kern/kern_thread.c	Sat Feb 22 20:43:04 2020	(r358251)
@@ -82,9 +82,9 @@ _Static_assert(offsetof(struct thread, td_flags) == 0x
     "struct thread KBI td_flags");
 _Static_assert(offsetof(struct thread, td_pflags) == 0x104,
     "struct thread KBI td_pflags");
-_Static_assert(offsetof(struct thread, td_frame) == 0x490,
+_Static_assert(offsetof(struct thread, td_frame) == 0x498,
     "struct thread KBI td_frame");
-_Static_assert(offsetof(struct thread, td_emuldata) == 0x6a0,
+_Static_assert(offsetof(struct thread, td_emuldata) == 0x6b0,
     "struct thread KBI td_emuldata");
 _Static_assert(offsetof(struct proc, p_flag) == 0xb0,
     "struct proc KBI p_flag");
@@ -102,9 +102,9 @@ _Static_assert(offsetof(struct thread, td_flags) == 0x
     "struct thread KBI td_flags");
 _Static_assert(offsetof(struct thread, td_pflags) == 0xa0,
     "struct thread KBI td_pflags");
-_Static_assert(offsetof(struct thread, td_frame) == 0x2f8,
+_Static_assert(offsetof(struct thread, td_frame) == 0x2fc,
     "struct thread KBI td_frame");
-_Static_assert(offsetof(struct thread, td_emuldata) == 0x340,
+_Static_assert(offsetof(struct thread, td_emuldata) == 0x344,
     "struct thread KBI td_emuldata");
 _Static_assert(offsetof(struct proc, p_flag) == 0x68,
     "struct proc KBI p_flag");

Modified: head/sys/sys/proc.h
==============================================================================
--- head/sys/sys/proc.h	Sat Feb 22 17:56:09 2020	(r358250)
+++ head/sys/sys/proc.h	Sat Feb 22 20:43:04 2020	(r358251)
@@ -250,6 +250,7 @@ struct thread {
 	int		td_flags;	/* (t) TDF_* flags. */
 	int		td_inhibitors;	/* (t) Why can not run. */
 	int		td_pflags;	/* (k) Private thread (TDP_*) flags. */
+	int		td_pflags2;	/* (k) Private thread (TDP2_*) flags. */
 	int		td_dupfd;	/* (k) Ret value from fdopen. XXX */
 	int		td_sqqueue;	/* (t) Sleepqueue queue blocked on. */
 	const void	*td_wchan;	/* (t) Sleep address. */
@@ -1195,6 +1196,25 @@ curthread_pflags_restore(int save)
 {
 
 	curthread->td_pflags &= save;
+}
+
+static __inline int
+curthread_pflags2_set(int flags)
+{
+	struct thread *td;
+	int save;
+
+	td = curthread;
+	save = ~flags | (td->td_pflags2 & flags);
+	td->td_pflags2 |= flags;
+	return (save);
+}
+
+static __inline void
+curthread_pflags2_restore(int save)
+{
+
+	curthread->td_pflags2 &= save;
 }
 
 static __inline __pure2 struct td_sched *

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