Ignore:
Timestamp:
May 22, 2004, 3:14:03 PM (17 years ago)
Author:
Joel Sherrill <joel.sherrill@…>
Children:
304d1a5
Parents:
cfc43898
Message:

2004-05-22 Till Strauman <strauman@…>

PR 619/bsps

  • mpc6xx/clock/c_clock.c: The PPC decrementer must be reloaded on each clock tick. Currently, this is done by just reloading a fixed value. The attached patch takes into account the time that elapsed since the decrementer crossed zero in order to adjust the value to be re-loaded. Without the patch, the effective system clock cycle is increased by the exception handler latency.
File:
1 edited

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  • c/src/lib/libcpu/powerpc/ChangeLog

    rcfc43898 r01c96bfb  
     12004-05-22      Till Strauman <strauman@slac.stanford.edu>
     2
     3        PR 619/bsps
     4        * mpc6xx/clock/c_clock.c: The PPC decrementer must be reloaded on each
     5        clock tick. Currently, this is done by just reloading a fixed value.
     6        The attached patch takes into account the time that elapsed since the
     7        decrementer crossed zero in order to adjust the value to be
     8        re-loaded. Without the patch, the effective system clock cycle is
     9        increased by the exception handler latency.
     10
    1112003-09-04      Joel Sherrill <joel@OARcorp.com>
    212
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