Date: Tue, 15 Nov 2011 20:17:19 +0000 (UTC) From: Marius Strobl <marius@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r227539 - head/sys/sparc64/include Message-ID: <201111152017.pAFKHJrL015412@svn.freebsd.org>
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Author: marius Date: Tue Nov 15 20:17:18 2011 New Revision: 227539 URL: http://svn.freebsd.org/changeset/base/227539 Log: 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. MFC after: 3 days Modified: head/sys/sparc64/include/pcpu.h Modified: head/sys/sparc64/include/pcpu.h ============================================================================== --- head/sys/sparc64/include/pcpu.h Tue Nov 15 20:15:58 2011 (r227538) +++ head/sys/sparc64/include/pcpu.h Tue Nov 15 20:17:18 2011 (r227539) @@ -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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