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Bump the maximum number of levels to 64 and add warning messages about

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what to do to fix reduced functionality if the number of levels is too low.
This commit is contained in:
Nate Lawson 2005-02-24 20:21:41 +00:00
parent 0c5897722c
commit d269386a24
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=142395
1 changed files with 15 additions and 5 deletions
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20
sys/kern/kern_cpu.c
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@ -51,9 +51,9 @@ __FBSDID("$FreeBSD$");
/*
* Number of levels we can handle. Levels are synthesized from settings
* so for N settings there may be N^2 levels.
* so for M settings and N drivers, there may be M*N levels.
*/
#define CF_MAX_LEVELS 32
#define CF_MAX_LEVELS 64
struct cpufreq_softc {
struct cf_level curr_level;
@ -321,8 +321,11 @@ cf_get_method(device_t dev, struct cf_level *level)
if (levels == NULL)
return (ENOMEM);
error = CPUFREQ_LEVELS(sc->dev, levels, &count);
if (error)
if (error) {
if (error == E2BIG)
printf("cpufreq: need to increase CF_MAX_LEVELS\n");
goto out;
}
error = device_get_children(device_get_parent(dev), &devs, &numdevs);
if (error)
goto out;
@ -686,8 +689,12 @@ cpufreq_curr_sysctl(SYSCTL_HANDLER_ARGS)
for (n = 0; n < devcount; n++) {
count = CF_MAX_LEVELS;
error = CPUFREQ_LEVELS(devs[n], levels, &count);
if (error)
if (error) {
if (error == E2BIG)
printf(
"cpufreq: need to increase CF_MAX_LEVELS\n");
break;
}
for (i = 0; i < count; i++) {
if (CPUFREQ_CMP(levels[i].total_set.freq, freq)) {
error = CPUFREQ_SET(devs[n], &levels[i],
@ -727,8 +734,11 @@ cpufreq_levels_sysctl(SYSCTL_HANDLER_ARGS)
if (levels == NULL)
return (ENOMEM);
error = CPUFREQ_LEVELS(sc->dev, levels, &count);
if (error)
if (error) {
if (error == E2BIG)
printf("cpufreq: need to increase CF_MAX_LEVELS\n");
goto out;
}
if (count) {
for (i = 0; i < count; i++) {
set = &levels[i].total_set;