X-Git-Url: https://git.kernel.dk/?p=fio.git;a=blobdiff_plain;f=arch%2Farch-x86_64.h;h=484ea0c5b8eb82ba892a1676b100131bf13a8635;hp=cea0451d8ba6f3788e7658508a27863f494ac590;hb=6fa22eb8d7aec95851b37b64a2c38a17b1da48ee;hpb=67bf982340d95ca98098ea050b54b4c7adb116c0

diff --git a/arch/arch-x86_64.h b/arch/arch-x86_64.h
index cea0451d..484ea0c5 100644
--- a/arch/arch-x86_64.h
+++ b/arch/arch-x86_64.h
@@ -1,24 +1,18 @@
-#ifndef ARCH_X86_64_h
-#define ARCH_X86_64_h
+#ifndef ARCH_X86_64_H
+#define ARCH_X86_64_H
 
-#include "arch-x86-common.h"
-
-#define FIO_ARCH	(arch_x86_64)
-
-#ifndef __NR_ioprio_set
-#define __NR_ioprio_set		251
-#define __NR_ioprio_get		252
-#endif
+static inline void do_cpuid(unsigned int *eax, unsigned int *ebx,
+			    unsigned int *ecx, unsigned int *edx)
+{
+	asm volatile("cpuid"
+		: "=a" (*eax), "=b" (*ebx), "=c" (*ecx), "=d" (*edx)
+		: "0" (*eax), "2" (*ecx)
+		: "memory");
+}
 
-#ifndef __NR_fadvise64
-#define __NR_fadvise64		221
-#endif
+#include "arch-x86-common.h" /* IWYU pragma: export */
 
-#ifndef __NR_sys_splice
-#define __NR_sys_splice		275
-#define __NR_sys_tee		276
-#define __NR_sys_vmsplice	278
-#endif
+#define FIO_ARCH	(arch_x86_64)
 
 #define	FIO_HUGE_PAGE		2097152
 
@@ -44,4 +38,34 @@ static inline unsigned long long get_cpu_clock(void)
 #define ARCH_HAVE_SSE4_2
 #define ARCH_HAVE_CPU_CLOCK
 
+#define RDRAND_LONG	".byte 0x48,0x0f,0xc7,0xf0"
+#define RDSEED_LONG	".byte 0x48,0x0f,0xc7,0xf8"
+#define RDRAND_RETRY	100
+
+static inline int arch_rand_long(unsigned long *val)
+{
+	int ok;
+
+	asm volatile("1: " RDRAND_LONG "\n\t"
+		     "jc 2f\n\t"
+		     "decl %0\n\t"
+		     "jnz 1b\n\t"
+		     "2:"
+		     : "=r" (ok), "=a" (*val)
+		     : "0" (RDRAND_RETRY));
+
+	return ok;
+}
+
+static inline int arch_rand_seed(unsigned long *seed)
+{
+	unsigned char ok;
+
+	asm volatile(RDSEED_LONG "\n\t"
+			"setc %0"
+			: "=qm" (ok), "=a" (*seed));
+
+	return 0;
+}
+
 #endif