Re: [RFC PATCH] perf: Handle multiple formatted AUX records

2021-01-25 Thread Suzuki K Poulose
Hi Peter On 1/25/21 10:25 AM, Peter Zijlstra wrote: On Fri, Jan 22, 2021 at 03:18:29PM +, Suzuki K Poulose wrote: CoreSight PMU supports aux-buffer for the ETM tracing. The trace generated by the ETM (associated with individual CPUs, like Intel PT) is captured by a separate IP (CoreSight TM

Re: [RFC PATCH] perf: Handle multiple formatted AUX records

2021-01-25 Thread Peter Zijlstra
On Mon, Jan 25, 2021 at 10:45:06AM +, Suzuki K Poulose wrote: > On 1/25/21 10:25 AM, Peter Zijlstra wrote: > > Since we have a whole u64, do we want to reserve a whole nibble (or > > maybe even a byte) for a format type? Because with a single bit like > > this, we'll kick ourselves when we end

Re: [RFC PATCH] perf: Handle multiple formatted AUX records

2021-01-25 Thread Peter Zijlstra
On Fri, Jan 22, 2021 at 03:18:29PM +, Suzuki K Poulose wrote: > CoreSight PMU supports aux-buffer for the ETM tracing. The trace > generated by the ETM (associated with individual CPUs, like Intel PT) > is captured by a separate IP (CoreSight TMC-ETR/ETF until now). > > The TMC-ETR applies for

[RFC PATCH] perf: Handle multiple formatted AUX records

2021-01-22 Thread Suzuki K Poulose
CoreSight PMU supports aux-buffer for the ETM tracing. The trace generated by the ETM (associated with individual CPUs, like Intel PT) is captured by a separate IP (CoreSight TMC-ETR/ETF until now). The TMC-ETR applies formatting of the raw ETM trace data, as it can collect traces from multiple ET