diff options
| -rw-r--r-- | drivers/memory/tegra/tegra20.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/memory/tegra/tegra20.c b/drivers/memory/tegra/tegra20.c index 4659c0cea30d..2db68a913b7a 100644 --- a/drivers/memory/tegra/tegra20.c +++ b/drivers/memory/tegra/tegra20.c @@ -5,6 +5,7 @@ #include <linux/bitfield.h> #include <linux/delay.h> +#include <linux/mutex.h> #include <linux/of_device.h> #include <linux/slab.h> #include <linux/string.h> @@ -55,6 +56,8 @@ /* we store collected statistics as a fixed point values */ #define MC_FX_FRAC_SCALE 100 +static DEFINE_MUTEX(tegra20_mc_stat_lock); + struct tegra20_mc_stat_gather { unsigned int pri_filter; unsigned int pri_event; @@ -615,8 +618,12 @@ static int tegra20_mc_stats_show(struct seq_file *s, void *unused) if (!stats) return -ENOMEM; + mutex_lock(&tegra20_mc_stat_lock); + tegra20_mc_collect_stats(mc, stats); + mutex_unlock(&tegra20_mc_stat_lock); + seq_puts(s, "Memory client Events Timeout High priority Bandwidth ARB RW change Successive Page miss\n"); seq_puts(s, "-----------------------------------------------------------------------------------------------------\n"); |