I had to track down a few perf bugs on sparc64, and it's impossible currently to see what's happening when debugging complicated issues such as seeing perf stop getting events when monitoring using all cpus in a huge system. So one patch here is a new 'x' sysrq that dumps the PMU control registers on every cpu. Next we have a bug fix inherited from x86, making sure there is a valid and alive address space before we go trying to probe the user stack for a backtrace. Finally, fix PCR control reg setting in sparc_pmu_enable_event(). This basically broke 'perf top' and similar things. Pushed out to 'sparc'. Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx> -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
