tools/power turbostat: Restore GFX sysfs fflush() call

Do fflush() to discard the buffered data, before each read of the
graphics sysfs knobs.

Fixes: ba99a4fc8c24 ("tools/power turbostat: Remove unnecessary fflush() call")
Signed-off-by: Zhang Rui <rui.zhang@intel.com>
Signed-off-by: Len Brown <len.brown@intel.com>

diff --git a/tools/power/x86/turbostat/turbostat.c b/tools/power/x86/turbostat/turbostat.c
index 70e17d4ad9b60a80da00eab42a38b7a31f229711..c9a34c16c7a8105b15fded1d8a5bafd4ef493008 100644 (file)
--- a/tools/power/x86/turbostat/turbostat.c
+++ b/tools/power/x86/turbostat/turbostat.c
@@ -6039,6 +6039,7 @@ int snapshot_graphics(int idx)
        int retval;
 
        rewind(gfx_info[idx].fp);
+       fflush(gfx_info[idx].fp);
 
        switch (idx) {
        case GFX_rc6: