linux/tools/perf/util/cpu-set-sched.h
Arnaldo Carvalho de Melo de20e3200c perf tools: Add fallback versions for CPU_{OR,EQUAL}()
From the glibc sources, so that we can keep the tooling buildable in
older systems while using recent sched.h CPU_ macros.

Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Alexey Budankov <alexey.budankov@linux.intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: https://lkml.kernel.org/n/tip-hvm9ysmrjip75ebdzhzoh429@git.kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
2019-02-06 10:00:39 -03:00

51 lines
1.7 KiB
C

// SPDX-License-Identifier: LGPL-2.1
// Definitions taken from glibc for use with older systems, same licensing.
#ifndef _CPU_SET_SCHED_PERF_H
#define _CPU_SET_SCHED_PERF_H
#include <features.h>
#include <sched.h>
#ifndef CPU_EQUAL
#ifndef __CPU_EQUAL_S
#if __GNUC_PREREQ (2, 91)
# define __CPU_EQUAL_S(setsize, cpusetp1, cpusetp2) \
(__builtin_memcmp (cpusetp1, cpusetp2, setsize) == 0)
#else
# define __CPU_EQUAL_S(setsize, cpusetp1, cpusetp2) \
(__extension__ \
({ const __cpu_mask *__arr1 = (cpusetp1)->__bits; \
const __cpu_mask *__arr2 = (cpusetp2)->__bits; \
size_t __imax = (setsize) / sizeof (__cpu_mask); \
size_t __i; \
for (__i = 0; __i < __imax; ++__i) \
if (__arr1[__i] != __arr2[__i]) \
break; \
__i == __imax; }))
#endif
#endif // __CPU_EQUAL_S
#define CPU_EQUAL(cpusetp1, cpusetp2) \
__CPU_EQUAL_S (sizeof (cpu_set_t), cpusetp1, cpusetp2)
#endif // CPU_EQUAL
#ifndef CPU_OR
#ifndef __CPU_OP_S
#define __CPU_OP_S(setsize, destset, srcset1, srcset2, op) \
(__extension__ \
({ cpu_set_t *__dest = (destset); \
const __cpu_mask *__arr1 = (srcset1)->__bits; \
const __cpu_mask *__arr2 = (srcset2)->__bits; \
size_t __imax = (setsize) / sizeof (__cpu_mask); \
size_t __i; \
for (__i = 0; __i < __imax; ++__i) \
((__cpu_mask *) __dest->__bits)[__i] = __arr1[__i] op __arr2[__i]; \
__dest; }))
#endif // __CPU_OP_S
#define CPU_OR(destset, srcset1, srcset2) \
__CPU_OP_S (sizeof (cpu_set_t), destset, srcset1, srcset2, |)
#endif // CPU_OR
#endif // _CPU_SET_SCHED_PERF_H