Do not conditionally compile the contents of this file upon whether

HWPMC_HOOKS is defined. The pmc_cpu_is_*() functions in this file
are referenced unconditionally by hwpmc(4).

This is mostly a stop-gap. The pmc_cpu_is*() function should
probably be declared inline in <sys/pmc.h> or <sys/pmckern.h> and
the function pointers with corresponding SX lock should probably
be moved to another file and compiled conditionally upon HWPMC_HOOKS.

Ok'd by: jkoshy@

sys/kern/kern_pmc.c

@@ -21,14 +21,11 @@
  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  * SUCH DAMAGE.
- *
  */
 
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
-#ifdef HWPMC_HOOKS
-
 #include <sys/pmckern.h>
 #include <sys/smp.h>
 
@@ -78,5 +75,3 @@ pmc_cpu_is_logical(int cpu)
 	return 0;
 #endif
 }
-
-#endif /* HWPMC_HOOKS */