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Date:      Sat, 9 Jan 2016 14:53:08 +0000 (UTC)
From:      Dmitry Chagin <dchagin@FreeBSD.org>
To:        src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-10@freebsd.org
Subject:   svn commit: r293490 - in stable/10/sys: amd64/amd64 arm/arm compat/ia32 compat/svr4 i386/i386 i386/ibcs2 kern mips/mips powerpc/powerpc sparc64/sparc64 sys
Message-ID:  <201601091453.u09Er8S5008620@repo.freebsd.org>

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Author: dchagin
Date: Sat Jan  9 14:53:08 2016
New Revision: 293490
URL: https://svnweb.freebsd.org/changeset/base/293490

Log:
  MFC r283382:
  
  In preparation for switching linuxulator to the use the native 1:1
  threads add a hook for cleaning thread resources before the thread die.

Modified:
  stable/10/sys/amd64/amd64/elf_machdep.c
  stable/10/sys/arm/arm/elf_machdep.c
  stable/10/sys/compat/ia32/ia32_sysvec.c
  stable/10/sys/compat/svr4/svr4_sysvec.c
  stable/10/sys/i386/i386/elf_machdep.c
  stable/10/sys/i386/ibcs2/ibcs2_sysvec.c
  stable/10/sys/kern/imgact_aout.c
  stable/10/sys/kern/init_main.c
  stable/10/sys/kern/kern_thread.c
  stable/10/sys/mips/mips/elf_machdep.c
  stable/10/sys/mips/mips/freebsd32_machdep.c
  stable/10/sys/powerpc/powerpc/elf32_machdep.c
  stable/10/sys/powerpc/powerpc/elf64_machdep.c
  stable/10/sys/sparc64/sparc64/elf_machdep.c
  stable/10/sys/sys/sysent.h
Directory Properties:
  stable/10/   (props changed)

Modified: stable/10/sys/amd64/amd64/elf_machdep.c
==============================================================================
--- stable/10/sys/amd64/amd64/elf_machdep.c	Sat Jan  9 14:51:50 2016	(r293489)
+++ stable/10/sys/amd64/amd64/elf_machdep.c	Sat Jan  9 14:53:08 2016	(r293490)
@@ -82,6 +82,7 @@ struct sysentvec elf64_freebsd_sysvec = 
 	.sv_shared_page_base = SHAREDPAGE,
 	.sv_shared_page_len = PAGE_SIZE,
 	.sv_schedtail	= NULL,
+	.sv_thread_detach = NULL,
 };
 INIT_SYSENTVEC(elf64_sysvec, &elf64_freebsd_sysvec);
 

Modified: stable/10/sys/arm/arm/elf_machdep.c
==============================================================================
--- stable/10/sys/arm/arm/elf_machdep.c	Sat Jan  9 14:51:50 2016	(r293489)
+++ stable/10/sys/arm/arm/elf_machdep.c	Sat Jan  9 14:53:08 2016	(r293490)
@@ -79,6 +79,7 @@ struct sysentvec elf32_freebsd_sysvec = 
 	.sv_fetch_syscall_args = cpu_fetch_syscall_args,
 	.sv_syscallnames = syscallnames,
 	.sv_schedtail	= NULL,
+	.sv_thread_detach = NULL,
 };
 
 static Elf32_Brandinfo freebsd_brand_info = {

Modified: stable/10/sys/compat/ia32/ia32_sysvec.c
==============================================================================
--- stable/10/sys/compat/ia32/ia32_sysvec.c	Sat Jan  9 14:51:50 2016	(r293489)
+++ stable/10/sys/compat/ia32/ia32_sysvec.c	Sat Jan  9 14:53:08 2016	(r293490)
@@ -139,6 +139,7 @@ struct sysentvec ia32_freebsd_sysvec = {
 	.sv_shared_page_base = FREEBSD32_SHAREDPAGE,
 	.sv_shared_page_len = PAGE_SIZE,
 	.sv_schedtail	= NULL,
+	.sv_thread_detach = NULL,
 };
 INIT_SYSENTVEC(elf_ia32_sysvec, &ia32_freebsd_sysvec);
 

Modified: stable/10/sys/compat/svr4/svr4_sysvec.c
==============================================================================
--- stable/10/sys/compat/svr4/svr4_sysvec.c	Sat Jan  9 14:51:50 2016	(r293489)
+++ stable/10/sys/compat/svr4/svr4_sysvec.c	Sat Jan  9 14:53:08 2016	(r293490)
@@ -196,6 +196,7 @@ struct sysentvec svr4_sysvec = {
 	.sv_fetch_syscall_args = cpu_fetch_syscall_args,
 	.sv_syscallnames = NULL,
 	.sv_schedtail	= NULL,
+	.sv_thread_detach = NULL,
 };
 
 const char      svr4_emul_path[] = "/compat/svr4";

Modified: stable/10/sys/i386/i386/elf_machdep.c
==============================================================================
--- stable/10/sys/i386/i386/elf_machdep.c	Sat Jan  9 14:51:50 2016	(r293489)
+++ stable/10/sys/i386/i386/elf_machdep.c	Sat Jan  9 14:53:08 2016	(r293490)
@@ -88,6 +88,7 @@ struct sysentvec elf32_freebsd_sysvec = 
 	.sv_shared_page_base = SHAREDPAGE,
 	.sv_shared_page_len = PAGE_SIZE,
 	.sv_schedtail	= NULL,
+	.sv_thread_detach = NULL,
 };
 INIT_SYSENTVEC(elf32_sysvec, &elf32_freebsd_sysvec);
 

Modified: stable/10/sys/i386/ibcs2/ibcs2_sysvec.c
==============================================================================
--- stable/10/sys/i386/ibcs2/ibcs2_sysvec.c	Sat Jan  9 14:51:50 2016	(r293489)
+++ stable/10/sys/i386/ibcs2/ibcs2_sysvec.c	Sat Jan  9 14:53:08 2016	(r293490)
@@ -89,6 +89,7 @@ struct sysentvec ibcs2_svr3_sysvec = {
 	.sv_fetch_syscall_args = cpu_fetch_syscall_args,
 	.sv_syscallnames = NULL,
 	.sv_schedtail	= NULL,
+	.sv_thread_detach = NULL,
 };
 
 static int

Modified: stable/10/sys/kern/imgact_aout.c
==============================================================================
--- stable/10/sys/kern/imgact_aout.c	Sat Jan  9 14:51:50 2016	(r293489)
+++ stable/10/sys/kern/imgact_aout.c	Sat Jan  9 14:53:08 2016	(r293490)
@@ -99,6 +99,7 @@ struct sysentvec aout_sysvec = {
 	.sv_fetch_syscall_args = cpu_fetch_syscall_args,
 	.sv_syscallnames = syscallnames,
 	.sv_schedtail	= NULL,
+	.sv_thread_detach = NULL,
 };
 
 #elif defined(__amd64__)

Modified: stable/10/sys/kern/init_main.c
==============================================================================
--- stable/10/sys/kern/init_main.c	Sat Jan  9 14:51:50 2016	(r293489)
+++ stable/10/sys/kern/init_main.c	Sat Jan  9 14:53:08 2016	(r293490)
@@ -414,6 +414,7 @@ struct sysentvec null_sysvec = {
 	.sv_fetch_syscall_args = null_fetch_syscall_args,
 	.sv_syscallnames = NULL,
 	.sv_schedtail	= NULL,
+	.sv_thread_detach = NULL,
 };
 
 /*

Modified: stable/10/sys/kern/kern_thread.c
==============================================================================
--- stable/10/sys/kern/kern_thread.c	Sat Jan  9 14:51:50 2016	(r293489)
+++ stable/10/sys/kern/kern_thread.c	Sat Jan  9 14:53:08 2016	(r293490)
@@ -46,6 +46,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/sched.h>
 #include <sys/sleepqueue.h>
 #include <sys/selinfo.h>
+#include <sys/sysent.h>
 #include <sys/turnstile.h>
 #include <sys/ktr.h>
 #include <sys/rwlock.h>
@@ -885,6 +886,14 @@ thread_suspend_check(int return_instead)
 		if ((p->p_flag & P_SINGLE_EXIT) && (p->p_singlethread != td)) {
 			PROC_UNLOCK(p);
 			tidhash_remove(td);
+
+			/*
+			 * Allow Linux emulation layer to do some work
+			 * before thread suicide.
+			 */
+			if (__predict_false(p->p_sysent->sv_thread_detach != NULL))
+				(p->p_sysent->sv_thread_detach)(td);
+
 			PROC_LOCK(p);
 			tdsigcleanup(td);
 			umtx_thread_exit(td);

Modified: stable/10/sys/mips/mips/elf_machdep.c
==============================================================================
--- stable/10/sys/mips/mips/elf_machdep.c	Sat Jan  9 14:51:50 2016	(r293489)
+++ stable/10/sys/mips/mips/elf_machdep.c	Sat Jan  9 14:53:08 2016	(r293490)
@@ -83,6 +83,7 @@ struct sysentvec elf64_freebsd_sysvec = 
 	.sv_fetch_syscall_args = cpu_fetch_syscall_args,
 	.sv_syscallnames = syscallnames,
 	.sv_schedtail	= NULL,
+	.sv_thread_detach = NULL,
 };
 
 static Elf64_Brandinfo freebsd_brand_info = {
@@ -139,6 +140,7 @@ struct sysentvec elf32_freebsd_sysvec = 
 	.sv_fetch_syscall_args = cpu_fetch_syscall_args,
 	.sv_syscallnames = syscallnames,
 	.sv_schedtail	= NULL,
+	.sv_thread_detach = NULL,
 };
 
 static Elf32_Brandinfo freebsd_brand_info = {

Modified: stable/10/sys/mips/mips/freebsd32_machdep.c
==============================================================================
--- stable/10/sys/mips/mips/freebsd32_machdep.c	Sat Jan  9 14:51:50 2016	(r293489)
+++ stable/10/sys/mips/mips/freebsd32_machdep.c	Sat Jan  9 14:53:08 2016	(r293490)
@@ -106,6 +106,7 @@ struct sysentvec elf32_freebsd_sysvec = 
 	.sv_fetch_syscall_args = cpu_fetch_syscall_args,
 	.sv_syscallnames = freebsd32_syscallnames,
 	.sv_schedtail	= NULL,
+	.sv_thread_detach = NULL,
 };
 INIT_SYSENTVEC(elf32_sysvec, &elf32_freebsd_sysvec);
 

Modified: stable/10/sys/powerpc/powerpc/elf32_machdep.c
==============================================================================
--- stable/10/sys/powerpc/powerpc/elf32_machdep.c	Sat Jan  9 14:51:50 2016	(r293489)
+++ stable/10/sys/powerpc/powerpc/elf32_machdep.c	Sat Jan  9 14:53:08 2016	(r293490)
@@ -107,6 +107,7 @@ struct sysentvec elf32_freebsd_sysvec = 
 	.sv_shared_page_base = FREEBSD32_SHAREDPAGE,
 	.sv_shared_page_len = PAGE_SIZE,
 	.sv_schedtail	= NULL,
+	.sv_thread_detach = NULL,
 };
 INIT_SYSENTVEC(elf32_sysvec, &elf32_freebsd_sysvec);
 

Modified: stable/10/sys/powerpc/powerpc/elf64_machdep.c
==============================================================================
--- stable/10/sys/powerpc/powerpc/elf64_machdep.c	Sat Jan  9 14:51:50 2016	(r293489)
+++ stable/10/sys/powerpc/powerpc/elf64_machdep.c	Sat Jan  9 14:53:08 2016	(r293490)
@@ -83,6 +83,7 @@ struct sysentvec elf64_freebsd_sysvec = 
 	.sv_shared_page_base = SHAREDPAGE,
 	.sv_shared_page_len = PAGE_SIZE,
 	.sv_schedtail	= NULL,
+	.sv_thread_detach = NULL,
 };
 INIT_SYSENTVEC(elf64_sysvec, &elf64_freebsd_sysvec);
 

Modified: stable/10/sys/sparc64/sparc64/elf_machdep.c
==============================================================================
--- stable/10/sys/sparc64/sparc64/elf_machdep.c	Sat Jan  9 14:51:50 2016	(r293489)
+++ stable/10/sys/sparc64/sparc64/elf_machdep.c	Sat Jan  9 14:53:08 2016	(r293490)
@@ -87,6 +87,7 @@ static struct sysentvec elf64_freebsd_sy
 	.sv_fetch_syscall_args = cpu_fetch_syscall_args,
 	.sv_syscallnames = syscallnames,
 	.sv_schedtail	= NULL,
+	.sv_thread_detach = NULL,
 };
 
 static Elf64_Brandinfo freebsd_brand_info = {

Modified: stable/10/sys/sys/sysent.h
==============================================================================
--- stable/10/sys/sys/sysent.h	Sat Jan  9 14:51:50 2016	(r293489)
+++ stable/10/sys/sys/sysent.h	Sat Jan  9 14:53:08 2016	(r293490)
@@ -130,6 +130,7 @@ struct sysentvec {
 	uint32_t	sv_timekeep_gen;
 	void		*sv_shared_page_obj;
 	void		(*sv_schedtail)(struct thread *);
+	void		(*sv_thread_detach)(struct thread *);
 };
 
 #define	SV_ILP32	0x000100



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