Peter Zijlstra [pet...@infradead.org] wrote: | On Thu, Nov 05, 2015 at 02:16:15AM +0530, Madhavan Srinivasan wrote: | > Second patch updates struct arch_misc_reg for arch/powerpc with pmu registers | > and adds offsetof macro for the same. It extends perf_reg_value() | > to use reg idx to decide on struct to return value from. | | Why; what's in those regs?
Those are PMU control registers/counters (in Patch 2) that are of interest only in the context of a PMU interrupt and not relevant to ptrace itself. Could we add those registers to 'struct pt_regs' anyway? We do have 'struct perf_regs' but that seems to be arch nuetral. If architectures could override that, maybe we could add these new registers there without touching 'struct pt_regs'. Even so, lot of perf code depends on 'struct pt_regs'. Sukadev -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
