with 32-bit rootfs, the offset may out of range when set it to 0xc0010299, define it as "unsigned long long" type and call pread64 directly in kernel.
Signed-off-by: Liwei Song <[email protected]> --- tools/power/x86/turbostat/turbostat.c | 5 +++-- 1 file changed, 3 insertions(+), 2 deletions(-) diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c index 33b370865d16..4c5cdfcb5721 100644 --- a/tools/power/x86/turbostat/turbostat.c +++ b/tools/power/x86/turbostat/turbostat.c @@ -33,6 +33,7 @@ #include <sys/capability.h> #include <errno.h> #include <math.h> +#include <sys/syscall.h> char *proc_stat = "/proc/stat"; FILE *outf; @@ -381,11 +382,11 @@ int get_msr_fd(int cpu) return fd; } -int get_msr(int cpu, off_t offset, unsigned long long *msr) +int get_msr(int cpu, unsigned long long offset, unsigned long long *msr) { ssize_t retval; - retval = pread(get_msr_fd(cpu), msr, sizeof(*msr), offset); + retval = syscall(SYS_pread64, get_msr_fd(cpu), msr, sizeof(*msr), offset); if (retval != sizeof *msr) err(-1, "cpu%d: msr offset 0x%llx read failed", cpu, (unsigned long long)offset); -- 2.17.1
