[PATCH v6 17/22] arm64: mm: Add page fault trace points

[Steven Rostedt]

On May 16, 2025 10:04:50 AM EDT, Will Deacon <will at kernel.org> wrote:
>
>> +	if (user_mode(regs))
>> +		trace_page_fault_user(addr, regs, esr);
>> +	else
>> +		trace_page_fault_kernel(addr, regs, esr);
>
>Why is this after kprobe_page_fault()?
>
>It's also a shame that the RV monitor can't hook into perf, as we
>already have a sw event for page faults that you could use instead of
>adding something new.
>

Perf events work for perf only. My question is why isn't this a tracepoint that perf could hook into?

Tracepoints are made to be generic, whereas perf events are not.

-- Steve