Initial commit

package/devel/perf/musl-compat.h

@@ -0,0 +1,43 @@
+#ifndef __PERF_MUSL_COMPAT_H
+#define __PERF_MUSL_COMPAT_H
+
+#ifndef __ASSEMBLER__
+
+#include <sys/ioctl.h>
+#include <asm/unistd.h>
+#include <unistd.h>
+#include <stdio.h>
+
+#undef _IOWR
+#undef _IOR
+#undef _IOW
+#undef _IOC
+#undef _IO
+
+#define _SC_LEVEL1_DCACHE_LINESIZE -1
+
+static inline long sysconf_wrap(int name)
+{
+	FILE *f;
+	int val;
+
+	switch (name) {
+	case _SC_LEVEL1_DCACHE_LINESIZE:
+		f = fopen("/sys/devices/system/cpu/cpu0/cache/index0/coherency_line_size", "r");
+		if (!f)
+			return 0;
+
+		if (fscanf(f, "%d", &val) != 1)
+			return 0;
+
+		fclose(f);
+		return val;
+	default:
+		return sysconf(name);
+	}
+}
+
+#define sysconf(_n) sysconf_wrap(_n)
+
+#endif
+#endif