Messages in this thread | | | Subject | Re: [RFC][PATCH 5/5] perfcounter: Add support for kernel hardware breakpoints | From | Peter Zijlstra <> | Date | Mon, 20 Jul 2009 19:38:55 +0200 |
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On Mon, 2009-07-20 at 13:08 -0400, Frederic Weisbecker wrote: > This adds the support for kernel hardware breakpoints in perfcounter. > It is added as a new type of software counter and can be defined by > using the counter number 5 and by passsing the address of the > breakpoint to set through the config attribute.
> +void bp_perf_triggered(struct hw_breakpoint *bp, struct pt_regs *regs) > +{ > + unsigned long target = hw_breakpoint_addr(bp); > + > + struct perf_sample_data data = { > + .regs = regs, > + .addr = instruction_pointer(regs), > + }; > + > + do_perf_swcounter_event(PERF_TYPE_BREAKPOINT, target, 1, 0, &data); > +}
.addr would be an associated data address, like for pagefaults and cache-misses have, its not the RIP of the faulting ins.
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