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| author | Dmitry Osipenko <digetx@gmail.com> | 2021-03-19 16:09:33 +0300 |
|---|---|---|
| committer | Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> | 2021-04-01 20:58:22 +0300 |
| commit | fbd31f5aa60259bfa836dccb35159a7e17a60314 (patch) | |
| tree | a914b310974c61a59edf8f208513dc11c3bb238d /include/soc | |
| parent | e47faa54c3a30af87b0b441b3fc0960dba17c9a2 (diff) | |
| download | linux-fbd31f5aa60259bfa836dccb35159a7e17a60314.tar.xz | |
memory: tegra20: Add debug statistics
Add debug statistics collection support. The statistics is available
via debugfs in '/sys/kernel/debug/mc/stats', it shows percent of memory
controller utilization for each memory client. This information is
intended to help with debugging of memory performance issues, it already
was proven to be useful by helping to improve memory bandwidth management
of the display driver.
Signed-off-by: Dmitry Osipenko <digetx@gmail.com>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Link: https://lore.kernel.org/r/20210319130933.23261-1-digetx@gmail.com
Diffstat (limited to 'include/soc')
| -rw-r--r-- | include/soc/tegra/mc.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/include/soc/tegra/mc.h b/include/soc/tegra/mc.h index d731407e23bb..d2fbe6a8b25b 100644 --- a/include/soc/tegra/mc.h +++ b/include/soc/tegra/mc.h @@ -7,6 +7,7 @@ #define __SOC_TEGRA_MC_H__ #include <linux/bits.h> +#include <linux/debugfs.h> #include <linux/err.h> #include <linux/interconnect-provider.h> #include <linux/reset-controller.h> @@ -175,6 +176,8 @@ struct tegra_mc_soc { unsigned int num_resets; const struct tegra_mc_icc_ops *icc_ops; + + int (*init)(struct tegra_mc *mc); }; struct tegra_mc { @@ -196,6 +199,10 @@ struct tegra_mc { struct icc_provider provider; spinlock_t lock; + + struct { + struct dentry *root; + } debugfs; }; int tegra_mc_write_emem_configuration(struct tegra_mc *mc, unsigned long rate); |