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4522a4 |
Support s390/s390x in performance schema's cycle-counting functions.
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4522a4 |
Filed upstream at http://bugs.mysql.com/bug.php?id=59953
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diff --git a/include/my_rdtsc.h b/include/my_rdtsc.h
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index 65f7df19..a28f470c 100644
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--- a/include/my_rdtsc.h
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+++ b/include/my_rdtsc.h
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@@ -128,5 +128,6 @@ void my_timer_init(MY_TIMER_INFO *mti);
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#define MY_TIMER_ROUTINE_GETSYSTEMTIMEASFILETIME 26
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#define MY_TIMER_ROUTINE_ASM_SUNPRO_X86_64 27
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#define MY_TIMER_ROUTINE_ASM_AARCH64 28
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+#define MY_TIMER_ROUTINE_ASM_S390 29
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#endif
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diff --git a/mysys/my_rdtsc.cc b/mysys/my_rdtsc.cc
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index 54d19691..f18c182f 100644
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--- a/mysys/my_rdtsc.cc
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+++ b/mysys/my_rdtsc.cc
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@@ -204,6 +204,13 @@ ulonglong my_timer_cycles(void) {
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__asm __volatile__("mrs %[rt],cntvct_el0" : [ rt ] "=r"(result));
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return result;
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}
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+#elif defined(__GNUC__) && defined(__s390__)
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+ /* covers both s390 and s390x */
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+ {
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+ ulonglong result;
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+ __asm__ __volatile__ ("stck %0" : "=Q" (result) : : "cc");
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+ return result;
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+ }
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#elif defined(HAVE_SYS_TIMES_H) && defined(HAVE_GETHRTIME)
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/* gethrtime may appear as either cycle or nanosecond counter */
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return (ulonglong)gethrtime();
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@@ -505,6 +512,8 @@ void my_timer_init(MY_TIMER_INFO *mti) {
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mti->cycles.routine = MY_TIMER_ROUTINE_ASM_GCC_SPARC32;
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#elif defined(__GNUC__) && defined(__aarch64__)
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mti->cycles.routine = MY_TIMER_ROUTINE_ASM_AARCH64;
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+#elif defined(__GNUC__) && defined(__s390__)
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+ mti->cycles.routine = MY_TIMER_ROUTINE_ASM_S390;
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#elif defined(HAVE_SYS_TIMES_H) && defined(HAVE_GETHRTIME)
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mti->cycles.routine = MY_TIMER_ROUTINE_GETHRTIME;
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#else
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