Date: Sat, 19 Nov 2011 13:30:12 +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-7@freebsd.org Subject: svn commit: r227717 - stable/7/sys/sparc64/include Message-ID: <201111191330.pAJDUCQr045078@svn.freebsd.org>
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Author: marius Date: Sat Nov 19 13:30:12 2011 New Revision: 227717 URL: http://svn.freebsd.org/changeset/base/227717 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/7/sys/sparc64/include/pcpu.h Directory Properties: stable/7/sys/ (props changed) stable/7/sys/cddl/contrib/opensolaris/ (props changed) stable/7/sys/contrib/dev/acpica/ (props changed) stable/7/sys/contrib/pf/ (props changed) Modified: stable/7/sys/sparc64/include/pcpu.h ============================================================================== --- stable/7/sys/sparc64/include/pcpu.h Sat Nov 19 13:29:55 2011 (r227716) +++ stable/7/sys/sparc64/include/pcpu.h Sat Nov 19 13:30:12 2011 (r227717) @@ -71,6 +71,16 @@ 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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