mirror of https://github.com/thesofproject/sof.git
logger: print a separator when the timestamp goes back in time
This makes the display of the mailbox ring buffer log much less confusing. It should not happen with the DMA trace but will behave the same in case something goes wrong. Before this commit the only clue that wrapping had happened was a NaN in the delta column (instead of the negative value). The "other?" is because the start of the mailbox is sometimes corrupted, or the timestamp goes sometimes back at boot for no obvious reason. In other words this new separator is useful to highlight bugs too. Absolute mode -e 0 with this commit: TIMESTAMP DELTA C# COMPONENT LOCATION [22598174808] ( 11) c0 ipc src/ipc/.... [22598174824] ( 15) c0 ipc src/ipc/.... [22598443257] ( 268433) c0 dma-trace src/trace/.... [22598443271] ( 14) c0 dma-trace src/trace/.... [22598443286] ( 14) c0 dma-trace src/trace/.... [22598943257] ( 499971) c0 dma-trace src/trace/.... --- negative DELTA: wrap, IPC_TRACE, other? --- [22430943257] ( 0) c0 dma-trace src/trace/.... [22530943257] ( 100000000) c0 dma-trace src/trace/.... [22542943257] ( 12000000) c0 dma-trace src/trace/.... [22542943271] ( 14) c0 dma-trace src/trace/.... [22542943285] ( 14) c0 dma-trace src/trace/.... Relative mode -e 1 with this commit: TIMESTAMP DELTA C# COMPONENT LOCATION [ 3080783.6] ( 11.4) c0 ipc src/ipc/.... [ 3080799.1] ( 15.5) c0 ipc src/ipc/.... [ 3349232.5] ( 268433.4) c0 dma-trace src/trace/.... [ 3349246.8] ( 14.3) c0 dma-trace src/trace/.... [ 3349261.2] ( 14.4) c0 dma-trace src/trace/.... [ 3849232.4] ( 499971.2) c0 dma-trace src/trace/.... --- negative DELTA: wrap, IPC_TRACE, other? --- [22430943257.0] ( 0.0) c0 dma-trace src/trace/.... [100000000.0] (100000000.0) c0 dma-trace src/trace/.... [111999999.5] ( 12000000.0) c0 dma-trace src/trace/.... [112000013.9] ( 14.4) c0 dma-trace src/trace/.... [112000028.2] ( 14.3) c0 dma-trace src/trace/.... Signed-off-by: Marc Herbert <marc.herbert@intel.com>
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parent
825bf79871
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@ -392,16 +392,21 @@ static void print_entry_params(const struct log_entry_header *dma_log,
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use_colors = 0;
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/* Something somewhere went wrong */
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if (dt < 0 || dt > 1000.0 * 1000.0 * 1000.0)
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if (dt > 1000.0 * 1000.0 * 1000.0)
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dt = NAN;
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if (dma_log->timestamp < last_timestamp) {
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fprintf(out_fd,
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"\n\t\t --- negative DELTA: wrap, IPC_TRACE, other? ---\n\n");
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entry_number = 1;
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}
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/* The first entry:
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* - is never shown with a relative TIMESTAMP (to itself!?)
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* - shows a zero DELTA
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*/
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if (entry_number == 1) {
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entry_number++;
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assert(last_timestamp == 0);
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/* Display absolute (and random) timestamps */
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timestamp_origin = 0;
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dt = 0;
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