perl: Integrate the mup interface from https://github.com/StAlphonsos/mup
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Sun, 28 Jun 2015 15:19:15 -0700 (PDT)
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Date: Sun, 28 Jun 2015 15:19:13 -0700
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From: Philip Guenther <guenther@gmail.com>
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To: Mark Kettenis <mark.kettenis@xs4all.nl>
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cc: tech@openbsd.org
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||||
Subject: Re: C-state FFH on x41
|
||||
In-Reply-To: <201506281537.t5SFbZs6031688@glazunov.sibelius.xs4all.nl>
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Message-ID: <alpine.BSO.2.20.1506281513280.27877@morgaine.local>
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References: <201506281537.t5SFbZs6031688@glazunov.sibelius.xs4all.nl>
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On Sun, 28 Jun 2015, Mark Kettenis wrote:
|
||||
> I have an x41 that prints the following in dmesg:
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>
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||||
> acpicpu0 at acpi0
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> C1: unknown FFH vendor 8: !C3(250@85 io@0x1015), C2(500@1 io@0x1014), PSS
|
||||
>
|
||||
> The relevant AML indead has that strange value in the "Bit Width" field:
|
||||
...
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> Obviously this ACPI BIOS is buggy and perhaps we should indeed
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> complain. But we also should include a C1 HALT state in the list
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> regardless, and I don't think we currently do that.
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Give the diff below a try. It inserts a fallback "C1-via-halt" state
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before parsing the _CST objects, overwriting it if a valid _CST C1 state
|
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is found. If no valid _CST C1 was found, the fallback should show in
|
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dmesg as "C1(@1 halt!)".
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|
||||
As a side-benefit, this renders a couple paranoia checks obsolete in
|
||||
acpicpu_idle().
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||||
|
||||
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Index: dev/acpi/acpicpu.c
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||||
===================================================================
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RCS file: /data/src/openbsd/src/sys/dev/acpi/acpicpu.c,v
|
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retrieving revision 1.64
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diff -u -p -r1.64 acpicpu.c
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--- dev/acpi/acpicpu.c 13 Jun 2015 21:41:42 -0000 1.64
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+++ dev/acpi/acpicpu.c 28 Jun 2015 21:55:51 -0000
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@@ -77,7 +77,7 @@ void acpicpu_setperf_ppc_change(struct a
|
||||
/* flags on Intel's FFH mwait method */
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||||
#define CST_FLAG_MWAIT_HW_COORD 0x1
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||||
#define CST_FLAG_MWAIT_BM_AVOIDANCE 0x2
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-#define CST_FLAG_UP_ONLY 0x4000 /* ignore if MP */
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+#define CST_FLAG_FALLBACK 0x4000 /* fallback for broken _CST */
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#define CST_FLAG_SKIP 0x8000 /* state is worse choice */
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#define FLAGS_MWAIT_ONLY 0x02
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@@ -339,7 +339,13 @@ acpicpu_add_cstate(struct acpicpu_softc
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dnprintf(10," C%d: latency:.%4x power:%.4x addr:%.16llx\n",
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state, latency, power, address);
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- cx = malloc(sizeof(*cx), M_DEVBUF, M_WAITOK);
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+ /* add a new state, or overwrite the fallback C1 state? */
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+ if (state != ACPI_STATE_C1 ||
|
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+ (cx = SLIST_FIRST(&sc->sc_cstates)) == NULL ||
|
||||
+ (cx->flags & CST_FLAG_FALLBACK) == 0) {
|
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+ cx = malloc(sizeof(*cx), M_DEVBUF, M_WAITOK);
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+ SLIST_INSERT_HEAD(&sc->sc_cstates, cx, link);
|
||||
+ }
|
||||
|
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cx->state = state;
|
||||
cx->method = method;
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@@ -347,8 +353,6 @@ acpicpu_add_cstate(struct acpicpu_softc
|
||||
cx->latency = latency;
|
||||
cx->power = power;
|
||||
cx->address = address;
|
||||
-
|
||||
- SLIST_INSERT_HEAD(&sc->sc_cstates, cx, link);
|
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}
|
||||
|
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/* Found a _CST object, add new cstate for each entry */
|
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@@ -489,9 +493,18 @@ acpicpu_getcst(struct acpicpu_softc *sc)
|
||||
if (aml_evalname(sc->sc_acpi, sc->sc_devnode, "_CST", 0, NULL, &res))
|
||||
return (1);
|
||||
|
||||
+ /* provide a fallback C1-via-halt in case _CST's C1 is bogus */
|
||||
+ acpicpu_add_cstate(sc, ACPI_STATE_C1, CST_METH_HALT,
|
||||
+ CST_FLAG_FALLBACK, 1, -1, 0);
|
||||
+
|
||||
aml_foreachpkg(&res, 1, acpicpu_add_cstatepkg, sc);
|
||||
aml_freevalue(&res);
|
||||
|
||||
+ /* only have fallback state? then no _CST objects were understood */
|
||||
+ cx = SLIST_FIRST(&sc->sc_cstates);
|
||||
+ if (cx->flags & CST_FLAG_FALLBACK)
|
||||
+ return (1);
|
||||
+
|
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/*
|
||||
* Scan the list for states that are neither lower power nor
|
||||
* lower latency than the next state; mark them to be skipped.
|
||||
@@ -500,19 +513,15 @@ acpicpu_getcst(struct acpicpu_softc *sc)
|
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* Also keep track if all the states we'll use use mwait.
|
||||
*/
|
||||
use_nonmwait = 0;
|
||||
- if ((cx = SLIST_FIRST(&sc->sc_cstates)) == NULL)
|
||||
- use_nonmwait = 1;
|
||||
- else {
|
||||
- while ((next_cx = SLIST_NEXT(cx, link)) != NULL) {
|
||||
- if ((cx->power >= next_cx->power &&
|
||||
- cx->latency >= next_cx->latency) ||
|
||||
- (cx->state > 1 &&
|
||||
- (sc->sc_ci->ci_feature_tpmflags & TPM_ARAT) == 0))
|
||||
- cx->flags |= CST_FLAG_SKIP;
|
||||
- else if (cx->method != CST_METH_MWAIT)
|
||||
- use_nonmwait = 1;
|
||||
- cx = next_cx;
|
||||
- }
|
||||
+ while ((next_cx = SLIST_NEXT(cx, link)) != NULL) {
|
||||
+ if ((cx->power >= next_cx->power &&
|
||||
+ cx->latency >= next_cx->latency) ||
|
||||
+ (cx->state > 1 &&
|
||||
+ (sc->sc_ci->ci_feature_tpmflags & TPM_ARAT) == 0))
|
||||
+ cx->flags |= CST_FLAG_SKIP;
|
||||
+ else if (cx->method != CST_METH_MWAIT)
|
||||
+ use_nonmwait = 1;
|
||||
+ cx = next_cx;
|
||||
}
|
||||
if (use_nonmwait)
|
||||
sc->sc_flags &= ~FLAGS_MWAIT_ONLY;
|
||||
@@ -581,8 +590,12 @@ acpicpu_print_one_cst(struct acpi_cstate
|
||||
if (cx->power != -1)
|
||||
printf("%d", cx->power);
|
||||
printf("@%d%s", cx->latency, meth);
|
||||
- if (cx->flags & ~CST_FLAG_SKIP)
|
||||
- printf(".%x", (cx->flags & ~CST_FLAG_SKIP));
|
||||
+ if (cx->flags & ~CST_FLAG_SKIP) {
|
||||
+ if (cx->flags & CST_FLAG_FALLBACK)
|
||||
+ printf("!");
|
||||
+ else
|
||||
+ printf(".%x", (cx->flags & ~CST_FLAG_SKIP));
|
||||
+ }
|
||||
if (show_addr)
|
||||
printf("@0x%llx", cx->address);
|
||||
printf(")");
|
||||
@@ -1114,12 +1127,6 @@ acpicpu_idle(void)
|
||||
* states marked skippable
|
||||
*/
|
||||
best = cx = SLIST_FIRST(&sc->sc_cstates);
|
||||
- if (cx == NULL) {
|
||||
-halt:
|
||||
- __asm volatile("sti; hlt");
|
||||
- return;
|
||||
- }
|
||||
-
|
||||
while ((cx->flags & CST_FLAG_SKIP) ||
|
||||
cx->latency * 3 > sc->sc_prev_sleep) {
|
||||
if ((cx = SLIST_NEXT(cx, link)) == NULL)
|
||||
@@ -1140,8 +1147,6 @@ halt:
|
||||
(cx->flags & CST_FLAG_MWAIT_BM_AVOIDANCE) == 0)
|
||||
break;
|
||||
}
|
||||
- if (cx == NULL)
|
||||
- goto halt;
|
||||
best = cx;
|
||||
}
|
||||
|
||||
|
||||
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astroengine (1577233) writes "In the final hours, Philae's science team hurried to squeeze as much science out of the small lander as possible. But the deep sleep was inevitable, Rosetta's lander has slipped into hibernation after running its... Read More http://clicks.slashdot.org/ct.html?ufl=0&rtr=on&s=x8pb08,22wah,10sc,iaq7,ef6w,1yh,aqzj
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Former Police Officer Indicted For Teaching How To Pass a Polygraph Test http://clicks.slashdot.org/ct.html?ufl=0&rtr=on&s=x8pb08,22wah,10sc,j6fh,abrg,1yh,aqzj
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From the government-hates-competition department
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George Maschke (699175) writes On Friday afternoon, the U.S. Department of Justice announced the indictment (2.6 mb PDF) of Douglas Gene Williams, a 69-year-old former Oklahoma City police polygraphist turned anti-polygraph activist for teaching... Read More http://clicks.slashdot.org/ct.html?ufl=0&rtr=on&s=x8pb08,22wah,10sc,kg1f,lf6a,1yh,aqzj
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Comcast Kisses-Up To Obama, Publicly Agrees On Net Neutrality http://clicks.slashdot.org/ct.html?ufl=0&rtr=on&s=x8pb08,22wah,10sc,cewx,cg82,1yh,aqzj
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From the wormtongues-all-around department
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||||
MojoKid writes Comcast is one of two companies to have earned Consumerist's "Worst Company in America" title on more than one occasion and it looks like they're lobbying for a third title. That is, unless there's another explanation as to how the... Read More http://clicks.slashdot.org/ct.html?ufl=0&rtr=on&s=x8pb08,22wah,10sc,gakt,jpmo,1yh,aqzj
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Ask Slashdot: Programming Education Resources For a Year Offline? http://clicks.slashdot.org/ct.html?ufl=0&rtr=on&s=x8pb08,22wah,10sc,i2z2,j2ja,1yh,aqzj
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From the maybe-a-local-phrasebook department
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||||
An anonymous reader writes "I will be traveling to a remote Himalayan village for year and won't have access to the internet. What offline resources would you all recommend to help me continue to develop my coding skills? I think this would be a... Read More http://clicks.slashdot.org/ct.html?ufl=0&rtr=on&s=x8pb08,22wah,10sc,dvj4,8dgh,1yh,aqzj
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Alleged Satellite Photo Says Ukraine Shootdown of MH17 http://clicks.slashdot.org/ct.html?ufl=0&rtr=on&s=x8pb08,22wah,10sc,6amg,ehfi,1yh,aqzj
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From the if-the-glove-won't-fit department
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||||
theshowmecanuck (703852) writes A group calling itself the Russian Union of Engineers has published a photograph, picked up by many news organizations (just picked one, Google it yourself to find more), claiming to show that MH17 was shot down by... Read More http://clicks.slashdot.org/ct.html?ufl=0&rtr=on&s=x8pb08,22wah,10sc,kx21,15cu,1yh,aqzj
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||||
US DOE Sets Sights On 300 Petaflop Supercomputer http://clicks.slashdot.org/ct.html?ufl=0&rtr=on&s=x8pb08,22wah,10sc,9b4x,5y5d,1yh,aqzj
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From the who-is-this-we-paleface? department
|
||||
dcblogs writes U.S. officials Friday announced plans to spend $325 million on two new supercomputers, one of which may eventually be built to support speeds of up to 300 petaflops. The U.S. Department of Energy, the major funder of supercomputers... Read More http://clicks.slashdot.org/ct.html?ufl=0&rtr=on&s=x8pb08,22wah,10sc,92u4,310d,1yh,aqzj
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||||
Ask Slashdot: Who's the Doctors Without Borders of Technology? http://clicks.slashdot.org/ct.html?ufl=0&rtr=on&s=x8pb08,22wah,10sc,7gbu,25op,1yh,aqzj
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From the trespassers-mostly department
|
||||
danspalding writes I'm transitioning into full time tech work after 10 years in education. To that end, after years of tooling around with command line and vim, I'm starting a programming bootcamp in early December. I used to think I wanted to go... Read More http://clicks.slashdot.org/ct.html?ufl=0&rtr=on&s=x8pb08,22wah,10sc,blvv,egxy,1yh,aqzj
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||||
Entrepreneur Injects Bitcoin Wallets Into Hands http://clicks.slashdot.org/ct.html?ufl=0&rtr=on&s=x8pb08,22wah,10sc,g9t3,i8da,1yh,aqzj
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||||
From the heirs-are-not-amused department
|
||||
wiredmikey writes A Dutch entrepreneur has had two microchips containing Bitcoin injected into his hands to help him make contactless payments. The chips, enclosed in a 2mm by 12mm capsule of "biocompatible" glass, were injected using a special... Read More http://clicks.slashdot.org/ct.html?ufl=0&rtr=on&s=x8pb08,22wah,10sc,73v6,1zki,1yh,aqzj
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||||
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||||
Microsoft Aims To Offer Windows 10 Upgrades For All Windows Phone 8 Lumias http://clicks.slashdot.org/ct.html?ufl=0&rtr=on&s=x8pb08,22wah,10sc,ad3c,5wfu,1yh,aqzj
|
||||
From the number-by-any-other-number department
|
||||
An anonymous reader writes News suggesting that Microsoft plans to offer Windows 10 upgrades for all its Windows Phone 8 devices broke today. "It's our intention to enable a Windows 10 upgrade for Lumia Windows Phone 8 smartphones," a Microsoft... Read More http://clicks.slashdot.org/ct.html?ufl=0&rtr=on&s=x8pb08,22wah,10sc,ebtb,le5x,1yh,aqzj
|
||||
|
||||
R. A. Montgomery, Creator of the "Choose Your Own Adventure" Books, Dead At 78 http://clicks.slashdot.org/ct.html?ufl=0&rtr=on&s=x8pb08,22wah,10sc,jbbx,7g6y,1yh,aqzj
|
||||
From the your-codename-is-jonah department
|
||||
Dave Knott writes Raymond Almiran Montgomery, original publisher and author of the incredibly popular "Choose Your Own Adventure" book series for children, the 4th bestselling children's series of all time, has died at the age of 78. In 1975,... Read More http://clicks.slashdot.org/ct.html?ufl=0&rtr=on&s=x8pb08,22wah,10sc,5jp2,a7ls,1yh,aqzj
|
||||
|
||||
Real Steampunk Computer Brought Back To Life http://clicks.slashdot.org/ct.html?ufl=0&rtr=on&s=x8pb08,22wah,10sc,g7nv,eiak,1yh,aqzj
|
||||
From the malware-free department
|
||||
New submitter engineerguy writes We discovered a 100 year old 19th century computer that does Fourier analysis with just gears spring and levers. It was locked in a glass case at the University of Illinois Department of Mathematics. We rebuilt a... Read More http://clicks.slashdot.org/ct.html?ufl=0&rtr=on&s=x8pb08,22wah,10sc,g887,1slz,1yh,aqzj
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||||
|
||||
AT&T Stops Using 'Super Cookies' To Track Cellphone Data http://clicks.slashdot.org/ct.html?ufl=0&rtr=on&s=x8pb08,22wah,10sc,gxkh,d3ck,1yh,aqzj
|
||||
From the turns-out-people-hate-that department
|
||||
jriding (1076733) writes AT&T Mobility, the nation's second-largest cellular provider, says it's no longer attaching hidden Internet tracking codes to data transmitted from its users' smartphones. The practice made it nearly impossible to... Read More http://clicks.slashdot.org/ct.html?ufl=0&rtr=on&s=x8pb08,22wah,10sc,9145,j9mq,1yh,aqzj
|
||||
|
||||
New Trial Brings Skype to (Some) Browsers http://clicks.slashdot.org/ct.html?ufl=0&rtr=on&s=x8pb08,22wah,10sc,11f1,e887,1yh,aqzj
|
||||
From the video-chat-not-yet-standard-browser-feature department
|
||||
Ars Technica reports that Microsoft has begun giving some users a taste of a new version of Skype, with a big difference compared to previous ones: the new one (tested by users on an invitation basis) is browser based. Rather than using the... Read More http://clicks.slashdot.org/ct.html?ufl=0&rtr=on&s=x8pb08,22wah,10sc,f7r7,ffwo,1yh,aqzj
|
||||
|
||||
|
||||
See all today's stories - http://clicks.slashdot.org/ct.html?ufl=0&rtr=on&s=x8pb08,22wah,10sc,lczi,3ou1,1yh,aqzj
|
||||
|
||||
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