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| author | Dmitry Osipenko <digetx@gmail.com> | 2021-03-19 14:09:33 +0100 |
|---|---|---|
| committer | Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com> | 2021-04-01 19:58:22 +0200 |
| commit | fbd31f5aa60259bfa836dccb35159a7e17a60314 (patch) | |
| tree | a914b310974c61a59edf8f208513dc11c3bb238d /drivers/memory/tegra/mc.c | |
| parent | memory: tegra: replace DEFINE_SIMPLE_ATTRIBUTE with DEFINE_DEBUGFS_ATTRIBUTE (diff) | |
| download | linux-fbd31f5aa60259bfa836dccb35159a7e17a60314.tar.xz linux-fbd31f5aa60259bfa836dccb35159a7e17a60314.zip | |
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.c')
| -rw-r--r-- | drivers/memory/tegra/mc.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/memory/tegra/mc.c b/drivers/memory/tegra/mc.c index a21163ccadc4..e58c3e5baea0 100644 --- a/drivers/memory/tegra/mc.c +++ b/drivers/memory/tegra/mc.c @@ -827,6 +827,15 @@ static int tegra_mc_probe(struct platform_device *pdev) return err; } + mc->debugfs.root = debugfs_create_dir("mc", NULL); + + if (mc->soc->init) { + err = mc->soc->init(mc); + if (err < 0) + dev_err(&pdev->dev, "failed to initialize SoC driver: %d\n", + err); + } + err = tegra_mc_reset_setup(mc); if (err < 0) dev_err(&pdev->dev, "failed to register reset controller: %d\n", |