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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 19:58:22 +0200 |
| commit | fbd31f5aa60259bfa836dccb35159a7e17a60314 (patch) | |
| tree | a914b310974c61a59edf8f208513dc11c3bb238d /drivers/memory/tegra/mc.h | |
| parent | e47faa54c3a30af87b0b441b3fc0960dba17c9a2 (diff) | |
| download | linux-fbd31f5aa60259bfa836dccb35159a7e17a60314.tar.bz2 | |
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 'drivers/memory/tegra/mc.h')
| -rw-r--r-- | drivers/memory/tegra/mc.h | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/drivers/memory/tegra/mc.h b/drivers/memory/tegra/mc.h index 33e40d600592..1ee34f0da4f7 100644 --- a/drivers/memory/tegra/mc.h +++ b/drivers/memory/tegra/mc.h @@ -92,12 +92,12 @@ icc_provider_to_tegra_mc(struct icc_provider *provider) return container_of(provider, struct tegra_mc, provider); } -static inline u32 mc_readl(struct tegra_mc *mc, unsigned long offset) +static inline u32 mc_readl(const struct tegra_mc *mc, unsigned long offset) { return readl_relaxed(mc->regs + offset); } -static inline void mc_writel(struct tegra_mc *mc, u32 value, +static inline void mc_writel(const struct tegra_mc *mc, u32 value, unsigned long offset) { writel_relaxed(value, mc->regs + offset); |