From: Avri Altman Date: Mon, 12 Jul 2021 09:50:30 +0000 (+0300) Subject: scsi: ufs: ufshpb: Transform set_dirty to iterate_rgn X-Git-Tag: accepted/tizen/unified/20230118.172025~6478^2~182 X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=8becf4db1e01d6ae2bb9f9877537dffee89b8308;p=platform%2Fkernel%2Flinux-rpi.git scsi: ufs: ufshpb: Transform set_dirty to iterate_rgn Given a transfer length, set_dirty meticulously iterates over all the entries, across subregions and regions if needed. Currently its only use is to mark dirty blocks, but HCM may benefit from it as well to manage its read counters. Link: https://lore.kernel.org/r/20210712095039.8093-4-avri.altman@wdc.com Reviewed-by: Daejun Park Signed-off-by: Avri Altman Signed-off-by: Martin K. Petersen --- diff --git a/drivers/scsi/ufs/ufshpb.c b/drivers/scsi/ufs/ufshpb.c index 9d46d02..8b4029b 100644 --- a/drivers/scsi/ufs/ufshpb.c +++ b/drivers/scsi/ufs/ufshpb.c @@ -145,13 +145,14 @@ static bool ufshpb_is_hpb_rsp_valid(struct ufs_hba *hba, return true; } -static void ufshpb_set_ppn_dirty(struct ufshpb_lu *hpb, int rgn_idx, - int srgn_idx, int srgn_offset, int cnt) +static void ufshpb_iterate_rgn(struct ufshpb_lu *hpb, int rgn_idx, int srgn_idx, + int srgn_offset, int cnt, bool set_dirty) { struct ufshpb_region *rgn; struct ufshpb_subregion *srgn; int set_bit_len; int bitmap_len; + unsigned long flags; next_srgn: rgn = hpb->rgn_tbl + rgn_idx; @@ -167,11 +168,14 @@ next_srgn: else set_bit_len = cnt; - set_bit(RGN_FLAG_DIRTY, &rgn->rgn_flags); + if (set_dirty) + set_bit(RGN_FLAG_DIRTY, &rgn->rgn_flags); - if (rgn->rgn_state != HPB_RGN_INACTIVE && + spin_lock_irqsave(&hpb->rgn_state_lock, flags); + if (set_dirty && rgn->rgn_state != HPB_RGN_INACTIVE && srgn->srgn_state == HPB_SRGN_VALID) bitmap_set(srgn->mctx->ppn_dirty, srgn_offset, set_bit_len); + spin_unlock_irqrestore(&hpb->rgn_state_lock, flags); srgn_offset = 0; if (++srgn_idx == hpb->srgns_per_rgn) { @@ -591,10 +595,8 @@ int ufshpb_prep(struct ufs_hba *hba, struct ufshcd_lrb *lrbp) /* If command type is WRITE or DISCARD, set bitmap as drity */ if (ufshpb_is_write_or_discard(cmd)) { - spin_lock_irqsave(&hpb->rgn_state_lock, flags); - ufshpb_set_ppn_dirty(hpb, rgn_idx, srgn_idx, srgn_offset, - transfer_len); - spin_unlock_irqrestore(&hpb->rgn_state_lock, flags); + ufshpb_iterate_rgn(hpb, rgn_idx, srgn_idx, srgn_offset, + transfer_len, true); return 0; }