d/freebsd-nq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

powerpc: Mark cpu_feature-based sysctls as MP_SAFE

Browse Source 
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.
This commit is contained in:
Justin Hibbits 2020-01-10 03:16:40 +00:00
parent 03b6e7a627
commit 4dc25d4452
1 changed files with 4 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

8
sys/powerpc/powerpc/cpu.c
View File

@ -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");
/*