diff options
| author | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-02-05 15:02:56 -0300 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2019-02-06 10:00:39 -0300 |
| commit | de20e3200c962213cdc67c0933f0ddaeb9285e62 (patch) | |
| tree | e35e4d36176b272f6aa50a27f456f75062e0453b /tools/perf/util/cpu-set-sched.h | |
| parent | c44a8b44ca9f156a5395597109987d1c462ba655 (diff) | |
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>
Diffstat (limited to 'tools/perf/util/cpu-set-sched.h')
| -rw-r--r-- | tools/perf/util/cpu-set-sched.h | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/tools/perf/util/cpu-set-sched.h b/tools/perf/util/cpu-set-sched.h new file mode 100644 index 000000000000..8cf4e40d322a --- /dev/null +++ b/tools/perf/util/cpu-set-sched.h @@ -0,0 +1,50 @@ +// 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 |