62 lines
1 KiB
C
62 lines
1 KiB
C
#ifndef __PERF_MUSL_COMPAT_H
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#define __PERF_MUSL_COMPAT_H
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#include <sys/ioctl.h>
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#include <string.h>
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#include <unistd.h>
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#include <stdio.h>
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#include <syscall.h>
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#include <sched.h>
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#undef _IOWR
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#undef _IOR
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#undef _IOW
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#undef _IOC
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#undef _IO
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/* Change XSI compliant version into GNU extension hackery */
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#define strerror_r(err, buf, buflen) \
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(strerror_r(err, buf, buflen) ? NULL : buf)
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#define _SC_LEVEL1_DCACHE_LINESIZE -1
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static inline long sysconf_wrap(int name)
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{
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FILE *f;
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int val;
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switch (name) {
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case _SC_LEVEL1_DCACHE_LINESIZE:
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f = fopen("/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size", "r");
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if (!f)
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return 0;
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if (fscanf(f, "%d", &val) != 1)
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return 0;
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fclose(f);
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return val;
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default:
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return sysconf(name);
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}
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}
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#define sysconf(_n) sysconf_wrap(_n)
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static inline int compat_sched_getcpu(void)
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{
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#ifdef __NR_getcpu
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unsigned int val;
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if (syscall(__NR_getcpu, &val))
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return -1;
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return val;
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#else
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return -1;
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#endif
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}
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#define sched_getcpu compat_sched_getcpu
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#endif
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