[PATCH] perfmon cleanup patch

This patch includes:
        - nasty macro bug fix for  PMC_IS_MONITOR()
        - pfm_stats is now per CPU
        - pmu_owners[] is not cache line aligned to avoid false sharing
        - cleanup in /proc/perfmon
        - rewritten pfm_write_pmcs(), pfm_write_pmds() with correct semantics
        - all copy_*user() are gone
        - we do not walk the tasklist in UP mode for system-wide: now
          unified with SMP

include/asm-ia64/system.h

@@ -374,7 +374,7 @@ struct task_struct;
 extern void ia64_save_extra (struct task_struct *task);
 extern void ia64_load_extra (struct task_struct *task);
 
-#if defined(CONFIG_SMP) && defined(CONFIG_PERFMON)
+#ifdef CONFIG_PERFMON
   DECLARE_PER_CPU(int, pfm_syst_wide);
 # define PERFMON_IS_SYSWIDE() (get_cpu_var(pfm_syst_wide) != 0)
 #else