Attachment 104101 Details for Bug 144232 – file.diff

[patch] file.diff

file.diff (text/plain), 2.78 KB, created by Boris Kochergin on 2010-02-23 14:40:00 UTC

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Creator: Boris Kochergin

Created: 2010-02-23 14:40:00 UTC

Size: 2.78 KB

patch

obsolete

>--- sys/kern/kern_cpu.c.orig    2010-02-22 22:40:37.000000000 -0500
>+++ sys/kern/kern_cpu.c 2010-02-22 23:11:03.000000000 -0500
>@@ -131,12 +131,16 @@
> DRIVER_MODULE(cpufreq, cpu, cpufreq_driver, cpufreq_dc, 0, 0);
> 
> static int             cf_lowest_freq;
>+static int             cf_highest_freq;
> static int             cf_verbose;
> TUNABLE_INT("debug.cpufreq.lowest", &cf_lowest_freq);
>+TUNABLE_INT("debug.cpufreq.highest", &cf_highest_freq);
> TUNABLE_INT("debug.cpufreq.verbose", &cf_verbose);
> SYSCTL_NODE(_debug, OID_AUTO, cpufreq, CTLFLAG_RD, NULL, "cpufreq debugging");
> SYSCTL_INT(_debug_cpufreq, OID_AUTO, lowest, CTLFLAG_RW, &cf_lowest_freq, 1,
>     "Don't provide levels below this frequency.");
>+SYSCTL_INT(_debug_cpufreq, OID_AUTO, highest, CTLFLAG_RW, &cf_highest_freq, 1,
>+    "Don't provide levels above this frequency.");
> SYSCTL_INT(_debug_cpufreq, OID_AUTO, verbose, CTLFLAG_RW, &cf_verbose, 1,
>     "Print verbose debugging messages");
> 
>@@ -306,6 +310,14 @@
>                goto out;
>        }
> 
>+       /* Reject levels that are above our specified threshold. */
>+       if (cf_highest_freq > 0 && level->total_set.freq > cf_highest_freq) {
>+               CF_DEBUG("rejecting freq %d, greater than %d limit\n",
>+                   level->total_set.freq, cf_highest_freq);
>+               error = EINVAL;
>+               goto out;
>+       }
>+
>        /* If already at this level, just return. */
>        if (CPUFREQ_CMP(sc->curr_level.total_set.freq, level->total_set.freq)) {
>                CF_DEBUG("skipping freq %d, same as current level %d\n",
>@@ -633,8 +645,13 @@
>                        continue;
>                }
> 
>-               /* Skip levels that have a frequency that is too low. */
>-               if (lev->total_set.freq < cf_lowest_freq) {
>+               /*
>+                * Skip levels that have a frequency that is too low or too
>+                * high.
>+                */
>+               if (lev->total_set.freq < cf_lowest_freq ||
>+                   (cf_highest_freq > 0 &&
>+                    lev->total_set.freq > cf_highest_freq)) {
>                        sc->all_count--;
>                        continue;
>                }
>
>--- share/man/man4/cpufreq.4.orig       2010-02-23 09:24:45.000000000 -0500
>+++ share/man/man4/cpufreq.4    2010-02-23 09:25:59.000000000 -0500
>@@ -98,6 +98,11 @@
> This setting is also accessible via a tunable with the same name.
> This can be used to disable very low levels that may be unusable on
> some systems.
>+.It Va debug.cpufreq.highest
>+Highest CPU frequency in MHz to offer to users.
>+This setting is also accessible via a tunable with the same name.
>+This can be used to disable very high levels that may be unusable on
>+some systems.
> .It Va debug.cpufreq.verbose
> Print verbose messages.
> This setting is also accessible via a tunable with the same name.

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Attachments on bug 144232: 104101