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| author | Ben Dooks <ben.dooks@codethink.co.uk> | 2018-11-21 16:13:23 +0000 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2019-01-07 09:52:42 +0530 |
| commit | 95f295f9fe08166307d94b641fba0b0e924d5d31 (patch) | |
| tree | ff0f3610c5748817710fcf26d278739e70112db4 /drivers/dma | |
| parent | 65c383c78000f73a96869505554f57c364308204 (diff) | |
| download | blackbird-op-linux-95f295f9fe08166307d94b641fba0b0e924d5d31.tar.gz blackbird-op-linux-95f295f9fe08166307d94b641fba0b0e924d5d31.zip | |
dmaengine: tegra: add tracepoints to driver
Add some trace-points to the driver to allow for debuging via the
trace pipe.
Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Reviewed-by: Steven Rostedt (VMware) <rostedt@goodmis.org>
Signed-off-by: Vinod Koul <vkoul@kernel.org>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/tegra20-apb-dma.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/drivers/dma/tegra20-apb-dma.c b/drivers/dma/tegra20-apb-dma.c index c60c3f7cad5f..659b49bf6fdb 100644 --- a/drivers/dma/tegra20-apb-dma.c +++ b/drivers/dma/tegra20-apb-dma.c @@ -38,6 +38,9 @@ #include "dmaengine.h" +#define CREATE_TRACE_POINTS +#include <trace/events/tegra_apb_dma.h> + #define TEGRA_APBDMA_GENERAL 0x0 #define TEGRA_APBDMA_GENERAL_ENABLE BIT(31) @@ -672,6 +675,8 @@ static void tegra_dma_tasklet(unsigned long data) dmaengine_desc_get_callback(&dma_desc->txd, &cb); cb_count = dma_desc->cb_count; dma_desc->cb_count = 0; + trace_tegra_dma_complete_cb(&tdc->dma_chan, cb_count, + cb.callback); spin_unlock_irqrestore(&tdc->lock, flags); while (cb_count--) dmaengine_desc_callback_invoke(&cb, NULL); @@ -688,6 +693,7 @@ static irqreturn_t tegra_dma_isr(int irq, void *dev_id) spin_lock_irqsave(&tdc->lock, flags); + trace_tegra_dma_isr(&tdc->dma_chan, irq); status = tdc_read(tdc, TEGRA_APBDMA_CHAN_STATUS); if (status & TEGRA_APBDMA_STATUS_ISE_EOC) { tdc_write(tdc, TEGRA_APBDMA_CHAN_STATUS, status); @@ -846,6 +852,7 @@ found: dma_set_residue(txstate, residual); } + trace_tegra_dma_tx_status(&tdc->dma_chan, cookie, txstate); spin_unlock_irqrestore(&tdc->lock, flags); return ret; } |
