diff options
Diffstat (limited to 'usr/src/uts/sun4v/os/mach_startup.c')
| -rw-r--r-- | usr/src/uts/sun4v/os/mach_startup.c | 23 |
1 files changed, 1 insertions, 22 deletions
diff --git a/usr/src/uts/sun4v/os/mach_startup.c b/usr/src/uts/sun4v/os/mach_startup.c index e9916773f4..100bfd90da 100644 --- a/usr/src/uts/sun4v/os/mach_startup.c +++ b/usr/src/uts/sun4v/os/mach_startup.c @@ -20,7 +20,7 @@ */ /* - * Copyright 2006 Sun Microsystems, Inc. All rights reserved. + * Copyright 2007 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ @@ -77,14 +77,6 @@ phys_install_has_changed(void) } -#ifdef N2_IDLE_WORKAROUND -/* - * Tuneable to control enabling of IDLE loop workaround on Niagara2 1.x parts. - * This workaround will be removed before the RR. - */ -int n2_idle_workaround; -#endif - /* * Halt the present CPU until awoken via an interrupt */ @@ -138,19 +130,6 @@ cpu_halt(void) return; } -#ifdef N2_IDLE_WORKAROUND - /* - * The following workaround for Niagara2, when enabled, forces the - * IDLE CPU to wait in a tight loop until something becomes runnable - * locally, minimizing the overall CPU usage on an IDLE CPU. - */ - if (n2_idle_workaround) { - while (cpup->cpu_disp->disp_nrunnable == 0) { - (void) hv_cpu_yield(); - } - } -#endif - /* * We're on our way to being halted. Wait until something becomes * runnable locally or we are awaken (i.e. removed from the halt set). |