Date: Mon, 23 Aug 2004 21:51:12 -0700 From: Nate Lawson <nate@cryptography.com> To: OGAWA Takaya <t-ogawa@triaez.kaisei.org> Cc: acpi@FreeBSD.org Subject: Re: acpi mpsafe panic? on acpi_panasonic Message-ID: <412AC940.7080408@cryptography.com> In-Reply-To: <86hdqtq1ii.wl.t-ogawa@triaez.kaisei.org> References: <86hdqtq1ii.wl.t-ogawa@triaez.kaisei.org>
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[-- Attachment #1 --]
OGAWA Takaya wrote:
> Hi,
>
> Sorry for reporting this late, but acpi_panasonic driver began to cause
> problem after I think your acpi mpsafe commit.
>
> If none of WITNESS, INVARIANTS and INVARIANT_SUPPORT is turned on:
> System does not goes up multi-user. The symptom is that the system
> stops after the following message during boot:
>
>>Pre-seeding PRNG:
>
> Hitting Ctrl-T here shows that sysctl(8) is running and waiting for
> "ACPI Panasonic extras", but neither Ctrl-C nor Ctrl-Alt-Del do not
> take effect.
>
> If all of WITNESS, INVARIANTS and INVARIANT_SUPPORT are turned on:
> Kernel panics.
>
>>witness_get: witness exhausted
>>panic: _sx_xlock (ACPI Panasonic extras): xlock already held @ /usr/src/sys/modules/acpi/acpi_panasonic/../../../i386/acpica/acpi_panasonic.c:214
Please try the attached patch.
-Nate
[-- Attachment #2 --]
Index: sys/i386/acpica/acpi_panasonic.c
===================================================================
RCS file: /home/ncvs/src/sys/i386/acpica/acpi_panasonic.c,v
retrieving revision 1.3
diff -u -r1.3 acpi_panasonic.c
--- sys/i386/acpica/acpi_panasonic.c 13 Aug 2004 06:22:31 -0000 1.3
+++ sys/i386/acpica/acpi_panasonic.c 24 Aug 2004 01:52:32 -0000
@@ -400,21 +400,32 @@
}
static void
-acpi_panasonic_notify(ACPI_HANDLE h, UINT32 notify, void *context)
+acpi_panasonic_event(void *arg)
{
struct acpi_panasonic_softc *sc;
UINT32 key;
+ sc = (struct acpi_panasonic_softc *)arg;
+
+ ACPI_SERIAL_BEGIN(panasonic);
+ if (acpi_panasonic_hkey_event(sc, sc->handle, &key) == 0) {
+ acpi_panasonic_hkey_action(sc, sc->handle, key);
+ acpi_UserNotify("Panasonic", sc->handle, (uint8_t)key);
+ }
+ ACPI_SERIAL_END(panasonic);
+}
+
+static void
+acpi_panasonic_notify(ACPI_HANDLE h, UINT32 notify, void *context)
+{
+ struct acpi_panasonic_softc *sc;
+
sc = (struct acpi_panasonic_softc *)context;
switch (notify) {
case 0x80:
- ACPI_SERIAL_BEGIN(panasonic);
- if (acpi_panasonic_hkey_event(sc, h, &key) == 0) {
- acpi_panasonic_hkey_action(sc, h, key);
- acpi_UserNotify("Panasonic", h, (uint8_t)key);
- }
- ACPI_SERIAL_END(panasonic);
+ AcpiOsQueueForExecution(OSD_PRIORITY_LO, acpi_panasonic_event,
+ sc);
break;
default:
device_printf(sc->dev, "unknown notify: %#x\n", notify);
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