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| author | Linux Build Service Account <lnxbuild@localhost> | 2016-10-17 13:33:59 -0700 |
|---|---|---|
| committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2016-10-17 13:33:59 -0700 |
| commit | a18f0e81de0ee326e142b69db0b0d1d50edd64d7 (patch) | |
| tree | c9779fba554246bb732b171b5df9f1c7b0ff8dbf | |
| parent | 3993230d5c94accec096c28a3643529d27656982 (diff) | |
| parent | 626da03683087ad2980df18dba9e3751b5a70d80 (diff) | |
Merge "PM / devfreq: memlat: add device attribute to show core to device bw map"
| -rw-r--r-- | drivers/devfreq/governor_memlat.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/drivers/devfreq/governor_memlat.c b/drivers/devfreq/governor_memlat.c index 010f9defe33e..a3c826e152e1 100644 --- a/drivers/devfreq/governor_memlat.c +++ b/drivers/devfreq/governor_memlat.c @@ -81,6 +81,29 @@ show_attr(__attr) \ store_attr(__attr, min, max) \ static DEVICE_ATTR(__attr, 0644, show_##__attr, store_##__attr) +static ssize_t show_map(struct device *dev, struct device_attribute *attr, + char *buf) +{ + struct devfreq *df = to_devfreq(dev); + struct memlat_node *n = df->data; + struct core_dev_map *map = n->hw->freq_map; + unsigned int cnt = 0; + + cnt += snprintf(buf, PAGE_SIZE, "Core freq (MHz)\tDevice BW\n"); + + while (map->core_mhz && cnt < PAGE_SIZE) { + cnt += snprintf(buf + cnt, PAGE_SIZE - cnt, "%15u\t%9u\n", + map->core_mhz, map->target_freq); + map++; + } + if (cnt < PAGE_SIZE) + cnt += snprintf(buf + cnt, PAGE_SIZE - cnt, "\n"); + + return cnt; +} + +static DEVICE_ATTR(freq_map, 0444, show_map, NULL); + static unsigned long core_to_dev_freq(struct memlat_node *node, unsigned long coref) { @@ -247,6 +270,7 @@ gov_attr(ratio_ceil, 1U, 10000U); static struct attribute *dev_attr[] = { &dev_attr_ratio_ceil.attr, + &dev_attr_freq_map.attr, NULL, }; |