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Index: head/sys/amd64/amd64/elf_machdep.c
===================================================================
--- head/sys/amd64/amd64/elf_machdep.c
+++ head/sys/amd64/amd64/elf_machdep.c
@@ -82,6 +82,7 @@
.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);
Index: head/sys/arm/arm/elf_machdep.c
===================================================================
--- head/sys/arm/arm/elf_machdep.c
+++ head/sys/arm/arm/elf_machdep.c
@@ -81,6 +81,7 @@
.sv_fetch_syscall_args = cpu_fetch_syscall_args,
.sv_syscallnames = syscallnames,
.sv_schedtail = NULL,
+ .sv_thread_detach = NULL,
};
static Elf32_Brandinfo freebsd_brand_info = {
Index: head/sys/compat/ia32/ia32_sysvec.c
===================================================================
--- head/sys/compat/ia32/ia32_sysvec.c
+++ head/sys/compat/ia32/ia32_sysvec.c
@@ -136,6 +136,7 @@
.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);
Index: head/sys/compat/svr4/svr4_sysvec.c
===================================================================
--- head/sys/compat/svr4/svr4_sysvec.c
+++ head/sys/compat/svr4/svr4_sysvec.c
@@ -196,6 +196,7 @@
.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";
Index: head/sys/i386/i386/elf_machdep.c
===================================================================
--- head/sys/i386/i386/elf_machdep.c
+++ head/sys/i386/i386/elf_machdep.c
@@ -88,6 +88,7 @@
.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);
Index: head/sys/i386/ibcs2/ibcs2_sysvec.c
===================================================================
--- head/sys/i386/ibcs2/ibcs2_sysvec.c
+++ head/sys/i386/ibcs2/ibcs2_sysvec.c
@@ -89,6 +89,7 @@
.sv_fetch_syscall_args = cpu_fetch_syscall_args,
.sv_syscallnames = NULL,
.sv_schedtail = NULL,
+ .sv_thread_detach = NULL,
};
static int
Index: head/sys/kern/imgact_aout.c
===================================================================
--- head/sys/kern/imgact_aout.c
+++ head/sys/kern/imgact_aout.c
@@ -99,6 +99,7 @@
.sv_fetch_syscall_args = cpu_fetch_syscall_args,
.sv_syscallnames = syscallnames,
.sv_schedtail = NULL,
+ .sv_thread_detach = NULL,
};
#elif defined(__amd64__)
Index: head/sys/kern/init_main.c
===================================================================
--- head/sys/kern/init_main.c
+++ head/sys/kern/init_main.c
@@ -411,6 +411,7 @@
.sv_fetch_syscall_args = null_fetch_syscall_args,
.sv_syscallnames = NULL,
.sv_schedtail = NULL,
+ .sv_thread_detach = NULL,
};
/*
Index: head/sys/kern/kern_thread.c
===================================================================
--- head/sys/kern/kern_thread.c
+++ head/sys/kern/kern_thread.c
@@ -45,6 +45,7 @@
#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>
@@ -884,6 +885,14 @@
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);
Index: head/sys/mips/mips/elf_machdep.c
===================================================================
--- head/sys/mips/mips/elf_machdep.c
+++ head/sys/mips/mips/elf_machdep.c
@@ -83,6 +83,7 @@
.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 @@
.sv_fetch_syscall_args = cpu_fetch_syscall_args,
.sv_syscallnames = syscallnames,
.sv_schedtail = NULL,
+ .sv_thread_detach = NULL,
};
static Elf32_Brandinfo freebsd_brand_info = {
Index: head/sys/mips/mips/freebsd32_machdep.c
===================================================================
--- head/sys/mips/mips/freebsd32_machdep.c
+++ head/sys/mips/mips/freebsd32_machdep.c
@@ -106,6 +106,7 @@
.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);
Index: head/sys/powerpc/powerpc/elf32_machdep.c
===================================================================
--- head/sys/powerpc/powerpc/elf32_machdep.c
+++ head/sys/powerpc/powerpc/elf32_machdep.c
@@ -108,6 +108,7 @@
.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);
Index: head/sys/powerpc/powerpc/elf64_machdep.c
===================================================================
--- head/sys/powerpc/powerpc/elf64_machdep.c
+++ head/sys/powerpc/powerpc/elf64_machdep.c
@@ -84,6 +84,7 @@
.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);
Index: head/sys/sparc64/sparc64/elf_machdep.c
===================================================================
--- head/sys/sparc64/sparc64/elf_machdep.c
+++ head/sys/sparc64/sparc64/elf_machdep.c
@@ -87,6 +87,7 @@
.sv_fetch_syscall_args = cpu_fetch_syscall_args,
.sv_syscallnames = syscallnames,
.sv_schedtail = NULL,
+ .sv_thread_detach = NULL,
};
static Elf64_Brandinfo freebsd_brand_info = {
Index: head/sys/sys/sysent.h
===================================================================
--- head/sys/sys/sysent.h
+++ head/sys/sys/sysent.h
@@ -136,6 +136,7 @@
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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