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[CELL] spufs: remove needless context save/restore code

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The following steps are not needed in the SPE context save/restore
paths:

Save Step 12: save_mfc_decr()
  save suspend_time to CSA (It will be done by step 14)
  save ch 7 (decrementer value will be saved in LSCSA by spe-side step 10)

Restore Step 59: restore_ch_part1()
  restore ch 1 (it will be done by spe-side step 15)

This change removes the unnecessary steps.

Signed-off-by: Masato Noguchi <Masato.Noguchi@jp.sony.com>
Signed-off-by: Jeremy Kerr <jk@ozlabs.org>
Signed-off-by: Arnd Bergmann <arnd.bergmann@de.ibm.com>
This commit is contained in:
Masato Noguchi 2007-07-20 21:39:36 +02:00 committed by Arnd Bergmann
parent daced0f718
commit cfd529b25d
1 changed files with 1 additions and 11 deletions
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12
arch/powerpc/platforms/cell/spufs/switch.c
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@ -253,11 +253,6 @@ static inline void save_mfc_decr(struct spu_state *csa, struct spu *spu)
*/
if (in_be64(&priv2->mfc_control_RW) & MFC_CNTL_DECREMENTER_RUNNING) {
csa->priv2.mfc_control_RW |= MFC_CNTL_DECREMENTER_RUNNING;
csa->suspend_time = get_cycles();
out_be64(&priv2->spu_chnlcntptr_RW, 7ULL);
eieio();
csa->spu_chnldata_RW[7] = in_be64(&priv2->spu_chnldata_RW);
eieio();
} else {
csa->priv2.mfc_control_RW &= ~MFC_CNTL_DECREMENTER_RUNNING;
}
@ -1567,13 +1562,8 @@ static inline void restore_ch_part1(struct spu_state *csa, struct spu *spu)
int i;
/* Restore, Step 59:
* Restore the following CH: [0,3,4,24,25,27]
*/
/* Restore CH 1 without count */
out_be64(&priv2->spu_chnlcntptr_RW, 1);
out_be64(&priv2->spu_chnldata_RW, csa->spu_chnldata_RW[1]);
/* Restore the following CH: [0,3,4,24,25,27] */
for (i = 0; i < ARRAY_SIZE(ch_indices); i++) {
idx = ch_indices[i];
out_be64(&priv2->spu_chnlcntptr_RW, idx);