Re: [perfmon2] problem with perfmon2 on SPARC/niagara

[Vince W. <vi...@cs...>]

To reply to my own e-mail, the following patch makes perfmon report the 
expected values for long-running programs on my niagara machine.

I have no idea if doing things this way is safe.

Vince

--- arch/sparc64/perfmon/perfmon.c.orig	2008-08-15 12:23:33.000000000 -0400
+++ arch/sparc64/perfmon/perfmon.c	2008-08-15 13:45:40.000000000 -0400
@@ -113,7 +113,7 @@
  				     i, (unsigned long long)new_val,
  				     (new_val&wmask) ? 1 : 0);

-			if (new_val & wmask) {
+			if (new_val == 0) {
  				__set_bit(i, set->povfl_pmds);
  				set->npend_ovfls++;
  			}
@@ -317,7 +317,7 @@
  }

  static struct pfm_pmu_config pmu_sparc64_pmu_conf = {
-	.counter_width	= 31,
+	.counter_width	= 32,
  	.pmd_desc	= pfm_sparc64_pmd_desc,
  	.num_pmd_entries = 2,
  	.pmc_desc	= pfm_sparc64_pmc_desc,