Date: Sat, 19 Nov 2011 13:29:55 +0000 (UTC) From: Marius Strobl <marius@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-stable@freebsd.org, svn-src-stable-8@freebsd.org Subject: svn commit: r227716 - stable/8/sys/sparc64/include Message-ID: <201111191329.pAJDTtj0045021@svn.freebsd.org>
next in thread | raw e-mail | index | archive | help
Author: marius Date: Sat Nov 19 13:29:55 2011 New Revision: 227716 URL: http://svn.freebsd.org/changeset/base/227716 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. Modified: stable/8/sys/sparc64/include/pcpu.h Directory Properties: stable/8/sys/ (props changed) stable/8/sys/amd64/include/xen/ (props changed) stable/8/sys/cddl/contrib/opensolaris/ (props changed) stable/8/sys/contrib/dev/acpica/ (props changed) stable/8/sys/contrib/pf/ (props changed) Modified: stable/8/sys/sparc64/include/pcpu.h ============================================================================== --- stable/8/sys/sparc64/include/pcpu.h Sat Nov 19 13:04:17 2011 (r227715) +++ stable/8/sys/sparc64/include/pcpu.h Sat Nov 19 13:29:55 2011 (r227716) @@ -73,6 +73,16 @@ 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.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?201111191329.pAJDTtj0045021>