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d2f3f5d2e9
Allows a way of measuring low level kernel implementation of FUTEX_LOCK_PI and FUTEX_UNLOCK_PI. The program comes in two flavors: (i) single futex (default), all threads contend on the same uaddr. For the sake of the benchmark, we call into kernel space even when the lock is uncontended. The kernel will set it to TID, any waters that come in and contend for the pi futex will be handled respectively by the kernel. (ii) -M option for multiple futexes, each thread deals with its own futex. This is a trivial scenario and only measures kernel handling of 0->TID transition. Signed-off-by: Davidlohr Bueso <dbueso@suse.de> Cc: Mel Gorman <mgorman@suse.de> Link: http://lkml.kernel.org/r/1436259353.12255.78.camel@stgolabs.net Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
#ifndef BENCH_H
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#define BENCH_H
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/*
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* The madvise transparent hugepage constants were added in glibc
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* 2.13. For compatibility with older versions of glibc, define these
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* tokens if they are not already defined.
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*
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* PA-RISC uses different madvise values from other architectures and
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* needs to be special-cased.
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*/
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#ifdef __hppa__
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# ifndef MADV_HUGEPAGE
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# define MADV_HUGEPAGE 67
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# endif
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# ifndef MADV_NOHUGEPAGE
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# define MADV_NOHUGEPAGE 68
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# endif
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#else
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# ifndef MADV_HUGEPAGE
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# define MADV_HUGEPAGE 14
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# endif
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# ifndef MADV_NOHUGEPAGE
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# define MADV_NOHUGEPAGE 15
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# endif
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#endif
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extern int bench_numa(int argc, const char **argv, const char *prefix);
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extern int bench_sched_messaging(int argc, const char **argv, const char *prefix);
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extern int bench_sched_pipe(int argc, const char **argv, const char *prefix);
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extern int bench_mem_memcpy(int argc, const char **argv,
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const char *prefix __maybe_unused);
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extern int bench_mem_memset(int argc, const char **argv, const char *prefix);
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extern int bench_futex_hash(int argc, const char **argv, const char *prefix);
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extern int bench_futex_wake(int argc, const char **argv, const char *prefix);
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extern int bench_futex_wake_parallel(int argc, const char **argv,
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const char *prefix);
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extern int bench_futex_requeue(int argc, const char **argv, const char *prefix);
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/* pi futexes */
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extern int bench_futex_lock_pi(int argc, const char **argv, const char *prefix);
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#define BENCH_FORMAT_DEFAULT_STR "default"
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#define BENCH_FORMAT_DEFAULT 0
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#define BENCH_FORMAT_SIMPLE_STR "simple"
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#define BENCH_FORMAT_SIMPLE 1
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#define BENCH_FORMAT_UNKNOWN -1
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extern int bench_format;
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extern unsigned int bench_repeat;
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#endif
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