Date: Wed, 20 Apr 2005 09:03:07 +0200 From: Guy Brand <gb@isis.u-strasbg.fr> To: freebsd-acpi@freebsd.org Cc: freebsd-current@freebsd.org Subject: Re: hw.acpi.battery.life always at 100 Message-ID: <20050420070307.GA928@chimie.u-strasbg.fr> In-Reply-To: <42640C2B.20100@root.org> References: <20050417205230.GC837@chimie.u-strasbg.fr> <4263E9BF.4050501@root.org> <20050418192235.GA867@chimie.u-strasbg.fr> <42640C2B.20100@root.org>
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On 18 avril at 12:36, Nate Lawson wrote:
> I'm adding -current to the CC since a change elsewhere in the kernel may
> have triggered this. Is anyone aware why it appears interrupts are now
> disabled for a while just after launching init? The change appeared in
> 5-STABLE between March 17 and April 17.
>
> Guy, can you try disabling usb? Also, can you cvsup to dates between
> March 17 and April 17 to try to narrow down the exact date this started
> occurring?
Hi all,
Nate, I followed your instructions. First of all disabling USB
didn't change anything. I then suped RELENG_5 to several dates in
between March 17 and April 17 and found that the problem appeared
after Mar-31-05:00 and before Mar-31-11:00. cvsup between these two
timestamps shows two changes:
Edit src/release/doc/en_US.ISO8859-1/relnotes/common/new.sgml
Add delta 1.761.2.38 2005.03.31.06.28.58 hrs
Edit src/sys/dev/acpica/acpivar.h
Add delta 1.79.2.7 2005.03.31.06.03.59 njl
and diffing acpivar.h reveals:
@@ -25,7 +25,7 @@
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
- * $FreeBSD: src/sys/dev/acpica/acpivar.h,v 1.79.2.6 2005/03/02 09:18:41 obrien Exp $
+ * $FreeBSD: src/sys/dev/acpica/acpivar.h,v 1.79.2.7 2005/03/31 06:03:59 njl Exp $
*/
#ifndef _ACPIVAR_H_
@@ -406,7 +406,7 @@
ACPI_HANDLE acpi_GetReference(ACPI_HANDLE scope, ACPI_OBJECT *obj);
#ifndef ACPI_MAX_THREADS
-#define ACPI_MAX_THREADS 3
+#define ACPI_MAX_THREADS 1
#endif
/* ACPI task kernel thread initialization. */
I suped back to 5-STABLE and changed ACPI_MAX_THREADS accordingly
and the problem has now disappeared:
# sysctl hw.acpi.battery
hw.acpi.battery.life: 87
hw.acpi.battery.time: 167
hw.acpi.battery.state: 1
hw.acpi.battery.units: 1
hw.acpi.battery.info_expire: 5
# uname -a
FreeBSD 5.4-STABLE FreeBSD 5.4-STABLE #7: Wed Apr 20 00:49:58 CEST
2005 root@6nq.u-strasbg.fr:/usr/obj/usr/src/sys/GENERIC i386
BTW -CURRENT has the same problem (MFC from 1.91) and the same
change fixes it.
gb
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