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| author | Jean Delvare <khali@linux-fr.org> | 2007-09-05 08:19:09 +0000 |
|---|---|---|
| committer | Jean Delvare <khali@linux-fr.org> | 2007-09-05 08:19:09 +0000 |
| commit | 7975800ac118ac503b3db6fa56ed9e3745611abc (patch) | |
| tree | 5e4c324386b8696d5096159f49034a3ef3ed98e6 /lib/access.c | |
| parent | 20c98f41b7f76b9b7282bb4c58a959f593f0a1cf (diff) | |
| download | lm-sensors-git-7975800ac118ac503b3db6fa56ed9e3745611abc.tar.gz | |
Renumber the features linearly, so that feature number N is at
position N in the array. This allows for O(1) look-ups, as opposed
to O(N) before. This makes sensors_lookup_feature_nr() 2.4 times
faster in my real-world tests, resulting in a 6% performance boost
on average in the runtime part of "sensors".
git-svn-id: http://lm-sensors.org/svn/lm-sensors/branches/lm-sensors-3.0.0@4759 7894878c-1315-0410-8ee3-d5d059ff63e0
Diffstat (limited to 'lib/access.c')
| -rw-r--r-- | lib/access.c | 8 |
1 files changed, 2 insertions, 6 deletions
diff --git a/lib/access.c b/lib/access.c index 50f7f230..a784579b 100644 --- a/lib/access.c +++ b/lib/access.c @@ -92,15 +92,11 @@ sensors_for_all_config_chips(const sensors_chip_name *name, const sensors_chip_feature *sensors_lookup_feature_nr(const sensors_chip_name *chip, int feature) { - int i, j; - const sensors_chip_feature *features; + int i; for (i = 0; i < sensors_proc_chips_count; i++) if (sensors_match_chip(&sensors_proc_chips[i].chip, chip)) { - features = sensors_proc_chips[i].feature; - for (j = 0; features[j].data.name; j++) - if (features[j].data.number == feature) - return features + j; + return sensors_proc_chips[i].feature + feature; } return NULL; } |