Author: marius
Date: Sat Nov 19 13:04:17 2011
New Revision: 227715
URL: http://svn.freebsd.org/changeset/base/227715
Log:
MFC: r227539
Define curthread as an inline function that loads the thread pointer
directly from g7, the pcpu pointer. This guarantees correct behavior
when the thread migrates to a different CPU.
Commit message stolen from r205431. Additional testing by Peter Jeremy.
Approved by: re (kib)
Modified:
releng/9.0/sys/sparc64/include/pcpu.h
Directory Properties:
releng/9.0/sys/ (props changed)
releng/9.0/sys/amd64/include/xen/ (props changed)
releng/9.0/sys/boot/ (props changed)
releng/9.0/sys/boot/i386/efi/ (props changed)
releng/9.0/sys/boot/ia64/efi/ (props changed)
releng/9.0/sys/boot/ia64/ski/ (props changed)
releng/9.0/sys/boot/powerpc/boot1.chrp/ (props changed)
releng/9.0/sys/boot/powerpc/ofw/ (props changed)
releng/9.0/sys/cddl/contrib/opensolaris/ (props changed)
releng/9.0/sys/conf/ (props changed)
releng/9.0/sys/contrib/dev/acpica/ (props changed)
releng/9.0/sys/contrib/octeon-sdk/ (props changed)
releng/9.0/sys/contrib/pf/ (props changed)
releng/9.0/sys/contrib/x86emu/ (props changed)
Modified: releng/9.0/sys/sparc64/include/pcpu.h
==============================================================================
--- releng/9.0/sys/sparc64/include/pcpu.h Sat Nov 19 13:03:59 2011
(r227714)
+++ releng/9.0/sys/sparc64/include/pcpu.h Sat Nov 19 13:04:17 2011
(r227715)
@@ -74,6 +74,16 @@ register struct pcpu *pcpup __asm__(__XS
#define PCPU_GET(member) (pcpup->pc_ ## member)
+static __inline __pure2 struct thread *
+__curthread(void)
+{
+ struct thread *td;
+
+ __asm("ldx [%" __XSTRING(PCPU_REG) "], %0" : "=r" (td));
+ return (td);
+}
+#define curthread (__curthread())
+
/*
* XXX The implementation of this operation should be made atomic
* with respect to preemption.
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