diff options
Diffstat (limited to '')
-rw-r--r-- | tools/perf/arch/x86/util/tsc.c | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/tools/perf/arch/x86/util/tsc.c b/tools/perf/arch/x86/util/tsc.c new file mode 100644 index 000000000..559365f8f --- /dev/null +++ b/tools/perf/arch/x86/util/tsc.c @@ -0,0 +1,13 @@ +// SPDX-License-Identifier: GPL-2.0 +#include <linux/types.h> + +#include "../../../util/tsc.h" + +u64 rdtsc(void) +{ + unsigned int low, high; + + asm volatile("rdtsc" : "=a" (low), "=d" (high)); + + return low | ((u64)high) << 32; +} |