* perf open with "PERF_SAMPLE_REGS_USER" failing
@ 2019-08-07 2:14 Probir Roy
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From: Probir Roy @ 2019-08-07 2:14 UTC (permalink / raw)
To: kernelnewbies
Hi,
I am running following code where I am configuring an intel PEBS
device with "PERF_SAMPLE_REGS_USER" on a sky lake machine (function
initPEBS). Upon "perf_event_open" it returns with "Invalid
argument"(22) error. I can configure without "PERF_SAMPLE_REGS_USER"
and get sample events.
I am on kernel version: 5.2.2 . Any idea what could be the issue?
https://gist.github.com/proywm/36561da2a99f4ada8eafe8bdbdf3bbb7
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Probir Roy
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2019-08-07 2:14 perf open with "PERF_SAMPLE_REGS_USER" failing Probir Roy
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