On Wed, Oct 18, 2017 at 06:24:47PM +0300, Jarkko Sakkinen wrote: > On Tue, Oct 17, 2017 at 04:32:31PM -0400, Nayna Jain wrote: > > The existing wait_for_tpm_stat() polls for the chip status after > > 5msec sleep. As per TCG ddwg input, it is expected that tpm might > > return status in few usec. So, reducing the delay in polling to > > 1msec. > > Similarly, get_burstcount() function sleeps for 5msec before > > retrying for next query to burstcount in a loop. If it takes > > lesser time for TPM to return, this 5msec delay is longer than > > necessary. > > > > After this change, performance on a TPM 1.2 with an 8 byte > > burstcount for 1000 extends improved from ~14sec to ~9sec. > > > > Signed-off-by: Nayna Jain <nayna@xxxxxxxxxxxxxxxxxx> > > Reviewed-by: Jarkko Sakkinen <jarkko.sakkinen@xxxxxxxxxxxxxxx> Tested-by: Jarkko Sakkinen <jarkkko.sakkinen@xxxxxxxxxxxxxxx> /Jarkko
