tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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>
+50
+50
tools/perf/util/cpu-set-sched.h
+50
tools/perf/util/cpu-set-sched.h
···
1
+
// SPDX-License-Identifier: LGPL-2.1
2
+
// Definitions taken from glibc for use with older systems, same licensing.
3
+
#ifndef _CPU_SET_SCHED_PERF_H
4
+
#define _CPU_SET_SCHED_PERF_H
5
+
6
+
#include <features.h>
7
+
#include <sched.h>
8
+
9
+
#ifndef CPU_EQUAL
10
+
#ifndef __CPU_EQUAL_S
11
+
#if __GNUC_PREREQ (2, 91)
12
+
# define __CPU_EQUAL_S(setsize, cpusetp1, cpusetp2) \
13
+
(__builtin_memcmp (cpusetp1, cpusetp2, setsize) == 0)
14
+
#else
15
+
# define __CPU_EQUAL_S(setsize, cpusetp1, cpusetp2) \
16
+
(__extension__ \
17
+
({ const __cpu_mask *__arr1 = (cpusetp1)->__bits; \
18
+
const __cpu_mask *__arr2 = (cpusetp2)->__bits; \
19
+
size_t __imax = (setsize) / sizeof (__cpu_mask); \
20
+
size_t __i; \
21
+
for (__i = 0; __i < __imax; ++__i) \
22
+
if (__arr1[__i] != __arr2[__i]) \
23
+
break; \
24
+
__i == __imax; }))
25
+
#endif
26
+
#endif // __CPU_EQUAL_S
27
+
28
+
#define CPU_EQUAL(cpusetp1, cpusetp2) \
29
+
__CPU_EQUAL_S (sizeof (cpu_set_t), cpusetp1, cpusetp2)
30
+
#endif // CPU_EQUAL
31
+
32
+
#ifndef CPU_OR
33
+
#ifndef __CPU_OP_S
34
+
#define __CPU_OP_S(setsize, destset, srcset1, srcset2, op) \
35
+
(__extension__ \
36
+
({ cpu_set_t *__dest = (destset); \
37
+
const __cpu_mask *__arr1 = (srcset1)->__bits; \
38
+
const __cpu_mask *__arr2 = (srcset2)->__bits; \
39
+
size_t __imax = (setsize) / sizeof (__cpu_mask); \
40
+
size_t __i; \
41
+
for (__i = 0; __i < __imax; ++__i) \
42
+
((__cpu_mask *) __dest->__bits)[__i] = __arr1[__i] op __arr2[__i]; \
43
+
__dest; }))
44
+
#endif // __CPU_OP_S
45
+
46
+
#define CPU_OR(destset, srcset1, srcset2) \
47
+
__CPU_OP_S (sizeof (cpu_set_t), destset, srcset1, srcset2, |)
48
+
#endif // CPU_OR
49
+
50
+
#endif // _CPU_SET_SCHED_PERF_H