Author: rstone
Date: Sat May 1 21:59:06 2010
New Revision: 207482
URL: http://svn.freebsd.org/changeset/base/207482
Log:
When configuring hwpmc to use the EXT_SNOOP event, only send a default
cachestate qualifier on the Atom processor. Other Intel processors do not
accept a cachestate qualifier and currently hwpmc will return EINVAL if you try
to use the EXT_SNOOP event on those processors
Approved by: jkoshy (mentor)
MFC after: 2 weeks
Modified:
head/lib/libpmc/libpmc.c
Modified: head/lib/libpmc/libpmc.c
==============================================================================
--- head/lib/libpmc/libpmc.c Sat May 1 20:44:37 2010 (r207481)
+++ head/lib/libpmc/libpmc.c Sat May 1 21:59:06 2010 (r207482)
@@ -737,9 +737,16 @@ iap_allocate_pmc(enum pmc_event pe, char
case PMC_EV_IAP_EVENT_40H: /* Core */
case PMC_EV_IAP_EVENT_41H: /* Core */
case PMC_EV_IAP_EVENT_42H: /* Core, Core2, Atom */
- case PMC_EV_IAP_EVENT_77H: /* Core */
if (cachestate == 0)
cachestate = (0xF << 8);
+ break;
+ case PMC_EV_IAP_EVENT_77H: /* Atom */
+ /* IAP_EVENT_77H only accepts a cachestate qualifier on the
+ * Atom processor
+ */
+ if(cpu_info.pm_cputype == PMC_CPU_INTEL_ATOM && cachestate == 0)
+ cachestate = (0xF << 8);
+ break;
default:
break;
}
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