Messages in this thread | | | From | Bart Van Assche <> | Subject | Tracing to console | Date | Fri, 15 Jun 2018 21:01:53 +0000 |
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Hello Steven,
If I run the following commands as root:
cd /sys/kernel/debug/tracing grep pm_ available_events > set_event echo function >current_tracer grep scsi_ available_filter_functions | while read a b; do echo $a; done >set_ftrace_filter echo 1 >events/printk/enable echo 1 >tracing_on echo 1 >/proc/sys/kernel/tracepoint_printk echo - - - >/sys/class/scsi_host/host0/scan
then the following appears on the console:
console: ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) console: console: ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) console: console: console: ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) console: console: console: console: ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) console: console: console: console: console: ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) console: console: console: console: console: console: ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) console: console: console: console: console: console: console: ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) console: console: console: console: console: console: console: console: ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) console: console: console: console: console: console: console: console: console: ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) console: console: console: console: console: console: console: console: console: console: ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) console: console: console: console: console: console: console: console: console: console: console: ata1: SATA link up 1.5 Gbps (SStatus 113 SControl 300) [ ... ]
I assume that the repeated "console: " prefix is a bug and also that the same line repeats over and over again is also a bug? I ran into this with commit 017b3f8a10ca ("scsi: snic: fix a couple of spelling mistakes: "COMPLETE"").
Thanks,
Bart.
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