Date: Tue, 15 Jan 2008 13:03:56 +0200 From: m.boyarov@bsd.by (Max N. Boyarov) To: acpi@freebsd.org Subject: [PATCH]: powerd minimal frequency support Message-ID: <86ejcjfizn.fsf@bsd.by>
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Hi,
Patch add -m switch to powerd. This is help set minimal frequency level to powerd.
for sample powerd -m 1000 set minimal freq to 1000.
Please say if this patch is useful then I'll send PR.
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Index: powerd.8
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RCS file: /home/ncvs/src/usr.sbin/powerd/powerd.8,v
retrieving revision 1.10
diff -u -r1.10 powerd.8
=2D-- powerd.8 24 Nov 2005 09:25:08 -0000 1.10
+++ powerd.8 14 Jan 2008 20:56:37 -0000
@@ -83,6 +83,8 @@
Specifies a different polling interval (in milliseconds) for AC line state
and system idle levels.
The default is 500 ms.
+.It Fl m Ar ival
+Specifies a minimal frequency.
.It Fl P Ar pidfile
Specifies an alternative file in which the process ID should be stored.
The default is
Index: powerd.c
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RCS file: /home/ncvs/src/usr.sbin/powerd/powerd.c,v
retrieving revision 1.21
diff -u -r1.21 powerd.c
=2D-- powerd.c 13 Jun 2007 19:05:11 -0000 1.21
+++ powerd.c 14 Jan 2008 20:52:28 -0000
@@ -357,7 +357,7 @@
{
=20
fprintf(stderr,
=2D"usage: powerd [-v] [-a mode] [-b mode] [-i %%] [-n mode] [-p ival] [-r =
%%] [-P pidfile]\n");
+"usage: powerd [-v] [-a mode] [-b mode] [-i %%] [-n mode] [-p ival] [-r %%=
] [-m minfreq] [-P pidfile]\n");
exit(1);
}
=20
@@ -370,7 +370,7 @@
struct pidfh *pfh =3D NULL;
const char *pidfile =3D NULL;
long idle, total;
=2D int curfreq, *freqs, i, *mwatts, numfreqs;
+ int curfreq, *freqs, i, *mwatts, numfreqs, minfreq;
int ch, mode, mode_ac, mode_battery, mode_none;
uint64_t mjoules_used;
size_t len;
@@ -383,11 +383,13 @@
mjoules_used =3D 0;
vflag =3D 0;
=20
+ minfreq =3D 0;
+=09
/* User must be root to control frequencies. */
if (geteuid() !=3D 0)
errx(1, "must be root to run");
=20
=2D while ((ch =3D getopt(argc, argv, "a:b:i:n:p:P:r:v")) !=3D EOF)
+ while ((ch =3D getopt(argc, argv, "a:b:i:n:p:m:P:r:v")) !=3D EOF)
switch (ch) {
case 'a':
parse_mode(optarg, &mode_ac, ch);
@@ -427,6 +429,9 @@
case 'v':
vflag =3D 1;
break;
+ case 'm':
+ minfreq =3D atoi(optarg);
+ break;=09=09=09
default:
usage();
}
@@ -453,6 +458,17 @@
if (read_freqs(&numfreqs, &freqs, &mwatts))
err(1, "error reading supported CPU frequencies");
=20
+ if (vflag) {
+ printf("powerd: use %d as minimal freq\n", minfreq);
+ }
+=09
+ if ( minfreq < freqs[numfreqs - 1] ) {
+ minfreq =3D freqs[numfreqs - 1];
+ if (vflag) {
+ printf("minfreq setted to %d\n", minfreq);
+ }
+ }
+=09
/* Run in the background unless in verbose mode. */
if (!vflag) {
pid_t otherpid;
@@ -605,8 +621,8 @@
if (set_freq(freqs[i]))
warn("error setting CPU frequency %d",
freqs[i]);
=2D } else if (idle > (total * cpu_idle_mark) / 100 &&
=2D curfreq > freqs[numfreqs - 1]) {
+ } else if ( idle > (total * cpu_idle_mark) / 100 &&
+ curfreq > freqs[numfreqs - 1] && minfreq <=3D freqs[i+1] ) {
i++;
if (vflag) {
printf("idle time > %d%%, decreasing clock"
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Max N. Boyarov
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