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MDEV-9172 - Analyze patches for IBM System z

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Extended my_timer_cycles() to support s390.
Some compiler tunings for RHEL/SLES RPM packages on s390.
This commit is contained in:
Sergey Vojtovich
2015-11-27 13:58:30 +04:00
parent f3e5329846
commit 218da97d5d
3 changed files with 29 additions and 0 deletions
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19
cmake/build_configurations/mysql_release.cmake
View File

@@ -154,6 +154,25 @@ IF(UNIX)
SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO "-O3 ${COMMON_CXX_FLAGS}")
ENDIF()
# IBM Z flags
IF(CMAKE_SYSTEM_PROCESSOR MATCHES "s390x")
IF(RPM MATCHES "(rhel|centos)6" OR RPM MATCHES "(suse|sles)11")
SET(z_flags "-funroll-loops -march=z9-109 -mtune=z10 ")
ELSEIF(RPM MATCHES "(rhel|centos)7" OR RPM MATCHES "(suse|sles)12")
SET(z_flags "-funroll-loops -march=z196 -mtune=zEC12 ")
ELSE()
SET(z_flags "")
ENDIF()
IF(CMAKE_COMPILER_IS_GNUCC)
SET(CMAKE_C_FLAGS_RELWITHDEBINFO "${z_flags}${CMAKE_C_FLAGS_RELWITHDEBINFO}")
ENDIF()
IF(CMAKE_COMPILER_IS_GNUCXX)
SET(CMAKE_CXX_FLAGS_RELWITHDEBINFO "${z_flags}${CMAKE_CXX_FLAGS_RELWITHDEBINFO}")
ENDIF()
UNSET(z_flags)
ENDIF()
# HPUX flags
IF(CMAKE_SYSTEM_NAME MATCHES "HP-UX")
IF(CMAKE_C_COMPILER_ID MATCHES "HP")

1
include/my_rdtsc.h
View File

@@ -125,6 +125,7 @@ C_MODE_END
#define MY_TIMER_ROUTINE_MACH_ABSOLUTE_TIME 25
#define MY_TIMER_ROUTINE_GETSYSTEMTIMEASFILETIME 26
#define MY_TIMER_ROUTINE_ASM_SUNPRO_X86_64 27
#define MY_TIMER_ROUTINE_ASM_S390 28
#endif

9
mysys/my_rdtsc.c
View File

@@ -249,6 +249,13 @@ ulonglong my_timer_cycles(void)
clock_gettime(CLOCK_SGI_CYCLE, &tp);
return (ulonglong) tp.tv_sec * 1000000000 + (ulonglong) tp.tv_nsec;
}
#elif defined(__GNUC__) && defined(__s390__)
/* covers both s390 and s390x */
{
ulonglong result;
__asm__ __volatile__ ("stck %0" : "=Q" (result) : : "cc");
return result;
}
#elif defined(HAVE_SYS_TIMES_H) && defined(HAVE_GETHRTIME)
/* gethrtime may appear as either cycle or nanosecond counter */
return (ulonglong) gethrtime();
@@ -558,6 +565,8 @@ void my_timer_init(MY_TIMER_INFO *mti)
mti->cycles.routine= MY_TIMER_ROUTINE_ASM_GCC_SPARC32;
#elif defined(__sgi) && defined(HAVE_CLOCK_GETTIME) && defined(CLOCK_SGI_CYCLE)
mti->cycles.routine= MY_TIMER_ROUTINE_SGI_CYCLE;
#elif defined(__GNUC__) && defined(__s390__)
mti->cycles.routine= MY_TIMER_ROUTINE_ASM_S390;
#elif defined(HAVE_SYS_TIMES_H) && defined(HAVE_GETHRTIME)
mti->cycles.routine= MY_TIMER_ROUTINE_GETHRTIME;
#else