Re: Perf record of mem event on kernel data address causing freeze

, 2018 at 10:49 AM, Frederic Weisbecker wrote: > On Thu, May 17, 2018 at 04:38:52PM +0200, Jiri Olsa wrote: >> On Fri, May 11, 2018 at 02:23:14PM -0400, Probir Roy wrote: >> > I am using perf-tool to record memory access to some kernel addresses. >> > For some kernel addr

Restriction on setting debug registers (HW breakpoint) at kernel space

icts it to set HW breakpoint at some kernel address(if so, where is it written)? Regards -- Probir Roy

Process context of perf sample from interrupt handler

Hi, I'm writing a Linux kernel module that uses debug-register to sample Linux kernel using perf interface "register_wide_hw_breakpoint". I am interested to get the "callchain" of the process context at the sample handler. For this I have set PERF_SAMPLE_CALLCHAIN as a sample type. One issue is t