Cleanup UT_LOW_PRIORITY_CPU/UT_RESUME_PRIORITY_CPU

Server already has HMT_low/HMT_medium.

config.h.cmake

@@ -191,7 +191,6 @@
 #cmakedefine HAVE_PREAD 1
 #cmakedefine HAVE_PAUSE_INSTRUCTION 1
 #cmakedefine HAVE_FAKE_PAUSE_INSTRUCTION 1
-#cmakedefine HAVE_HMT_PRIORITY_INSTRUCTION 1
 #cmakedefine HAVE_RDTSCLL 1
 #cmakedefine HAVE_READ_REAL_TIME 1
 #cmakedefine HAVE_PTHREAD_ATTR_CREATE 1

configure.cmake

@@ -792,17 +792,6 @@ IF(NOT CMAKE_CROSSCOMPILING AND NOT MSVC)
     }
    " HAVE_FAKE_PAUSE_INSTRUCTION)
   ENDIF()
-  IF (NOT HAVE_PAUSE_INSTRUCTION)
-    CHECK_C_SOURCE_COMPILES("
-    #include <sys/platform/ppc.h>
-    int main()
-    {
-     __ppc_set_ppr_low();
-     __ppc_set_ppr_med();
-     return 0;
-    }
-    " HAVE_HMT_PRIORITY_INSTRUCTION)
-  ENDIF()
 ENDIF()
 
 CHECK_SYMBOL_EXISTS(tcgetattr "termios.h" HAVE_TCGETATTR 1)

include/my_cpu.h

@@ -21,17 +21,18 @@
   The defines are the same ones used by the linux kernel
 */
 
-#if defined(__powerpc__)
+#ifdef _ARCH_PWR8
+#include <sys/platform/ppc.h>
 /* Very low priority */
-#define HMT_very_low() asm volatile("or 31,31,31")
+#define HMT_very_low() __ppc_set_ppr_very_low()
 /* Low priority */
-#define HMT_low() asm volatile("or 1,1,1")
+#define HMT_low() __ppc_set_ppr_low()
 /* Medium low priority */
-#define HMT_medium_low() asm volatile("or 6,6,6")
+#define HMT_medium_low() __ppc_set_ppr_med_low()
 /* Medium priority */
-#define HMT_medium() asm volatile("or 2,2,2")
+#define HMT_medium() __ppc_set_ppr_med()
 /* Medium high priority */
-#define HMT_medium_high() asm volatile("or 5,5,5")
+#define HMT_medium_high() __ppc_set_ppr_med_high()
 /* High priority */
 #define HMT_high() asm volatile("or 3,3,3")
 #else

storage/innobase/include/ut0ut.h

@@ -89,15 +89,6 @@ typedef time_t	ib_time_t;
 # define UT_COMPILER_BARRIER()
 #endif
 
-#if defined(HAVE_HMT_PRIORITY_INSTRUCTION)
-# include <sys/platform/ppc.h>
-# define UT_LOW_PRIORITY_CPU() __ppc_set_ppr_low()
-# define UT_RESUME_PRIORITY_CPU() __ppc_set_ppr_med()
-#else
-# define UT_LOW_PRIORITY_CPU() ((void)0)
-# define UT_RESUME_PRIORITY_CPU() ((void)0)
-#endif
-
 /*********************************************************************//**
 Delays execution for at most max_wait_us microseconds or returns earlier
 if cond becomes true.

storage/innobase/ut/ut0ut.cc

@@ -37,6 +37,7 @@ Created 5/11/1994 Heikki Tuuri
 #include "trx0trx.h"
 #include <string>
 #include "log.h"
+#include "my_cpu.h"
 
 #ifdef _WIN32
 /*****************************************************************//**
@@ -290,14 +291,14 @@ ut_delay(
 {
 	ulint	i;
 
-	UT_LOW_PRIORITY_CPU();
+	HMT_low();
 
 	for (i = 0; i < delay * 50; i++) {
 		UT_RELAX_CPU();
 		UT_COMPILER_BARRIER();
 	}
 
-	UT_RESUME_PRIORITY_CPU();
+	HMT_medium();
 }
 
 /*************************************************************//**