diff options
Diffstat (limited to 'usr/src/uts/common/disp/cmt.c')
| -rw-r--r-- | usr/src/uts/common/disp/cmt.c | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/usr/src/uts/common/disp/cmt.c b/usr/src/uts/common/disp/cmt.c index 1c5e1f79a9..3ecbf39393 100644 --- a/usr/src/uts/common/disp/cmt.c +++ b/usr/src/uts/common/disp/cmt.c @@ -201,13 +201,15 @@ pg_cmt_cpu_startup(cpu_t *cp) /* * Return non-zero if thread can migrate between "from" and "to" - * without a performance penalty + * without a performance penalty. This is true only if we share a core on + * virtually any CPU; sharing the last-level cache is insufficient to make + * migration possible without penalty. */ int pg_cmt_can_migrate(cpu_t *from, cpu_t *to) { - if (from->cpu_physid->cpu_cacheid == - to->cpu_physid->cpu_cacheid) + if (from->cpu_physid->cpu_coreid == + to->cpu_physid->cpu_coreid) return (1); return (0); } |