Date: Fri, 10 Jan 2020 03:16:41 +0000 (UTC) From: Justin Hibbits <jhibbits@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r356591 - head/sys/powerpc/powerpc Message-ID: <202001100316.00A3GfIV008214@repo.freebsd.org>
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Author: jhibbits Date: Fri Jan 10 03:16:40 2020 New Revision: 356591 URL: https://svnweb.freebsd.org/changeset/base/356591 Log: powerpc: Mark cpu_feature-based sysctls as MP_SAFE hw.floatingpoint and hw.altivec are effectively runtime constants (bits from the cpu_feature bitfield), so don't need Giant, or any locking for that matter. Modified: head/sys/powerpc/powerpc/cpu.c Modified: head/sys/powerpc/powerpc/cpu.c ============================================================================== --- head/sys/powerpc/powerpc/cpu.c Fri Jan 10 01:24:49 2020 (r356590) +++ head/sys/powerpc/powerpc/cpu.c Fri Jan 10 03:16:40 2020 (r356591) @@ -259,10 +259,10 @@ register_t lpcr = LPCR_LPES; #endif /* Provide some user-friendly aliases for bits in cpu_features */ -SYSCTL_PROC(_hw, OID_AUTO, floatingpoint, CTLTYPE_INT | CTLFLAG_RD, - 0, PPC_FEATURE_HAS_FPU, cpu_feature_bit, "I", - "Floating point instructions executed in hardware"); -SYSCTL_PROC(_hw, OID_AUTO, altivec, CTLTYPE_INT | CTLFLAG_RD, +SYSCTL_PROC(_hw, OID_AUTO, floatingpoint, + CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, 0, PPC_FEATURE_HAS_FPU, + cpu_feature_bit, "I", "Floating point instructions executed in hardware"); +SYSCTL_PROC(_hw, OID_AUTO, altivec, CTLTYPE_INT | CTLFLAG_RD | CTLFLAG_MPSAFE, 0, PPC_FEATURE_HAS_ALTIVEC, cpu_feature_bit, "I", "CPU supports Altivec"); /*
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