diff --git a/sys/sys/pmc.h b/sys/sys/pmc.h
index a0bad56ac18..c0329afedaa 100644
--- a/sys/sys/pmc.h
+++ b/sys/sys/pmc.h
@@ -533,7 +533,6 @@ struct pmc_op_getmsr {
 #include <sys/malloc.h>
 #include <sys/sysctl.h>
 
-#define	PMC_REQUEST_POOL_SIZE			32
 #define	PMC_HASH_SIZE				16
 #define	PMC_MTXPOOL_SIZE			32
 #define	PMC_LOG_BUFFER_SIZE			4
diff --git a/sys/sys/pmclog.h b/sys/sys/pmclog.h
index 2d2edc0386f..8d1b25c39b7 100644
--- a/sys/sys/pmclog.h
+++ b/sys/sys/pmclog.h
@@ -57,9 +57,6 @@ enum pmclog_type {
 	PMCLOG_TYPE_MAP_OUT
 };
 
-#define	PMCLOG_MAPPING_INSERT			0x01	/* obsolete */
-#define	PMCLOG_MAPPING_DELETE			0x02	/* obsolete */
-
 /*
  * A log entry descriptor comprises of a 32 bit header and a 64 bit
  * time stamp followed by as many 32 bit words are required to record