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| author |   Masato Noguchi <Masato.Noguchi@jp.sony.com> | 2007-07-20 21:39:36 +0200 |
|---|---|---|
| committer |   Arnd Bergmann <arnd@klappe.arndb.de> | 2007-07-20 21:41:54 +0200 |
| commit | cfd529b25d9b1d48423b85d76066348e2459e646 (patch) | |
| tree | ac5107616212af4f6c5bb5e3bcb75d71de9889a7 /arch/powerpc | |
| parent | [CELL] spufs: fix array size of channel index (diff) | |
| download | linux-dev-cfd529b25d9b1d48423b85d76066348e2459e646.tar.xz linux-dev-cfd529b25d9b1d48423b85d76066348e2459e646.zip | |
[CELL] spufs: remove needless context save/restore code
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>
Diffstat (limited to 'arch/powerpc')
| -rw-r--r-- | arch/powerpc/platforms/cell/spufs/switch.c | 12 |
1 files changed, 1 insertions, 11 deletions
diff --git a/arch/powerpc/platforms/cell/spufs/switch.c b/arch/powerpc/platforms/cell/spufs/switch.c index 861336e99448..a08fe93817f6 100644 --- a/arch/powerpc/platforms/cell/spufs/switch.c +++ b/arch/powerpc/platforms/cell/spufs/switch.c @@ -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); |