Module Name: src Committed By: jruoho Date: Sat Aug 21 18:25:45 UTC 2010
Modified Files: src/sys/arch/x86/acpi: acpi_cpu_md.c src/sys/dev/acpi: acpi_cpu_tstate.c Log Message: After discussion with jakllsch@ and jmcneill@, revert the previous and only do the status-check when the comparison value reported by BIOS is not zero. The uncertainty noted in the previous commit still applies. But if we ever see a timeout again, it will likely be either a firmware bug or a special case like the Intel Turbo Boost. To generate a diff of this commit: cvs rdiff -u -r1.28 -r1.29 src/sys/arch/x86/acpi/acpi_cpu_md.c cvs rdiff -u -r1.15 -r1.16 src/sys/dev/acpi/acpi_cpu_tstate.c Please note that diffs are not public domain; they are subject to the copyright notices on the relevant files.
Modified files: Index: src/sys/arch/x86/acpi/acpi_cpu_md.c diff -u src/sys/arch/x86/acpi/acpi_cpu_md.c:1.28 src/sys/arch/x86/acpi/acpi_cpu_md.c:1.29 --- src/sys/arch/x86/acpi/acpi_cpu_md.c:1.28 Sat Aug 21 15:37:35 2010 +++ src/sys/arch/x86/acpi/acpi_cpu_md.c Sat Aug 21 18:25:45 2010 @@ -1,4 +1,4 @@ -/* $NetBSD: acpi_cpu_md.c,v 1.28 2010/08/21 15:37:35 jruoho Exp $ */ +/* $NetBSD: acpi_cpu_md.c,v 1.29 2010/08/21 18:25:45 jruoho Exp $ */ /*- * Copyright (c) 2010 Jukka Ruohonen <jruoho...@iki.fi> @@ -27,7 +27,7 @@ * SUCH DAMAGE. */ #include <sys/cdefs.h> -__KERNEL_RCSID(0, "$NetBSD: acpi_cpu_md.c,v 1.28 2010/08/21 15:37:35 jruoho Exp $"); +__KERNEL_RCSID(0, "$NetBSD: acpi_cpu_md.c,v 1.29 2010/08/21 18:25:45 jruoho Exp $"); #include <sys/param.h> #include <sys/bus.h> @@ -481,7 +481,7 @@ if (ps->ps_freq == 0) continue; - if (val == ps->ps_status || val == ps->ps_control) { + if (val == ps->ps_status) { *freq = ps->ps_freq; return 0; } @@ -509,6 +509,9 @@ xc = xc_broadcast(0, (xcfunc_t)x86_msr_xcall, &msr, NULL); xc_wait(xc); + if (__predict_false(ps->ps_status == 0)) + return 0; + if (__predict_false(ps->ps_status_addr == 0)) return 0; @@ -535,7 +538,7 @@ if (__predict_true(ps->ps_status_mask != 0)) val = val & ps->ps_status_mask; - if (val == ps->ps_status || val == ps->ps_control) + if (val == ps->ps_status) return; DELAY(ps->ps_latency); @@ -560,7 +563,7 @@ if (ts->ts_percent == 0) continue; - if (val == ts->ts_status || val == ts->ts_control) { + if (val == ts->ts_status) { *percent = ts->ts_percent; return 0; } @@ -604,7 +607,7 @@ val = rdmsr(MSR_THERM_CONTROL); - if (val == ts->ts_status || val == ts->ts_control) + if (val == ts->ts_status) return; DELAY(ts->ts_latency); Index: src/sys/dev/acpi/acpi_cpu_tstate.c diff -u src/sys/dev/acpi/acpi_cpu_tstate.c:1.15 src/sys/dev/acpi/acpi_cpu_tstate.c:1.16 --- src/sys/dev/acpi/acpi_cpu_tstate.c:1.15 Fri Aug 20 04:16:00 2010 +++ src/sys/dev/acpi/acpi_cpu_tstate.c Sat Aug 21 18:25:45 2010 @@ -1,4 +1,4 @@ -/* $NetBSD: acpi_cpu_tstate.c,v 1.15 2010/08/20 04:16:00 jruoho Exp $ */ +/* $NetBSD: acpi_cpu_tstate.c,v 1.16 2010/08/21 18:25:45 jruoho Exp $ */ /*- * Copyright (c) 2010 Jukka Ruohonen <jruoho...@iki.fi> @@ -27,7 +27,7 @@ * SUCH DAMAGE. */ #include <sys/cdefs.h> -__KERNEL_RCSID(0, "$NetBSD: acpi_cpu_tstate.c,v 1.15 2010/08/20 04:16:00 jruoho Exp $"); +__KERNEL_RCSID(0, "$NetBSD: acpi_cpu_tstate.c,v 1.16 2010/08/21 18:25:45 jruoho Exp $"); #include <sys/param.h> #include <sys/evcnt.h> @@ -683,15 +683,6 @@ if (sc->sc_tstate[i].ts_percent == 0) continue; - /* - * As the status field may be zero, compare - * against the control field value as well. - */ - if (val == sc->sc_tstate[i].ts_control) { - ts = &sc->sc_tstate[i]; - break; - } - if (val == sc->sc_tstate[i].ts_status) { ts = &sc->sc_tstate[i]; break;