xfs: pass the pag to the trace_xrep_calc_ag_resblks{,_btsize} trace points

This requires holding the pag refcount a little longer, but allows for the
decoding to only happen when tracing is actually enabled, and cleans up the
callsites a bit.

Signed-off-by: Christoph Hellwig <hch@lst.de>
Reviewed-by: Darrick J. Wong <djwong@kernel.org>
Signed-off-by: Darrick J. Wong <djwong@kernel.org>

Author: Christoph Hellwig

fs/xfs/scrub/repair.c

@@ -331,10 +331,8 @@ xrep_calc_ag_resblks(
 		freelen = aglen;
 		usedlen = aglen;
 	}
-	xfs_perag_put(pag);
 
-	trace_xrep_calc_ag_resblks(mp, sm->sm_agno, icount, aglen,
-			freelen, usedlen);
+	trace_xrep_calc_ag_resblks(pag, icount, aglen, freelen, usedlen);
 
 	/*
 	 * Figure out how many blocks we'd need worst case to rebuild
@@ -372,8 +370,9 @@ xrep_calc_ag_resblks(
 		rmapbt_sz = 0;
 	}
 
-	trace_xrep_calc_ag_resblks_btsize(mp, sm->sm_agno, bnobt_sz,
-			inobt_sz, rmapbt_sz, refcbt_sz);
+	trace_xrep_calc_ag_resblks_btsize(pag, bnobt_sz, inobt_sz, rmapbt_sz,
+			refcbt_sz);
+	xfs_perag_put(pag);
 
 	return max(max(bnobt_sz, inobt_sz), max(rmapbt_sz, refcbt_sz));
 }

fs/xfs/scrub/trace.h

@@ -2189,10 +2189,10 @@ TRACE_EVENT(xrep_findroot_block,
 		  __entry->level)
 )
 TRACE_EVENT(xrep_calc_ag_resblks,
-	TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno,
-		 xfs_agino_t icount, xfs_agblock_t aglen, xfs_agblock_t freelen,
+	TP_PROTO(const struct xfs_perag *pag, xfs_agino_t icount,
+		 xfs_agblock_t aglen, xfs_agblock_t freelen,
 		 xfs_agblock_t usedlen),
-	TP_ARGS(mp, agno, icount, aglen, freelen, usedlen),
+	TP_ARGS(pag, icount, aglen, freelen, usedlen),
 	TP_STRUCT__entry(
 		__field(dev_t, dev)
 		__field(xfs_agnumber_t, agno)
@@ -2202,8 +2202,8 @@ TRACE_EVENT(xrep_calc_ag_resblks,
 		__field(xfs_agblock_t, usedlen)
 	),
 	TP_fast_assign(
-		__entry->dev = mp->m_super->s_dev;
-		__entry->agno = agno;
+		__entry->dev = pag->pag_mount->m_super->s_dev;
+		__entry->agno = pag->pag_agno;
 		__entry->icount = icount;
 		__entry->aglen = aglen;
 		__entry->freelen = freelen;
@@ -2218,10 +2218,10 @@ TRACE_EVENT(xrep_calc_ag_resblks,
 		  __entry->usedlen)
 )
 TRACE_EVENT(xrep_calc_ag_resblks_btsize,
-	TP_PROTO(struct xfs_mount *mp, xfs_agnumber_t agno,
-		 xfs_agblock_t bnobt_sz, xfs_agblock_t inobt_sz,
-		 xfs_agblock_t rmapbt_sz, xfs_agblock_t refcbt_sz),
-	TP_ARGS(mp, agno, bnobt_sz, inobt_sz, rmapbt_sz, refcbt_sz),
+	TP_PROTO(const struct xfs_perag *pag, xfs_agblock_t bnobt_sz,
+		 xfs_agblock_t inobt_sz, xfs_agblock_t rmapbt_sz,
+		 xfs_agblock_t refcbt_sz),
+	TP_ARGS(pag, bnobt_sz, inobt_sz, rmapbt_sz, refcbt_sz),
 	TP_STRUCT__entry(
 		__field(dev_t, dev)
 		__field(xfs_agnumber_t, agno)
@@ -2231,8 +2231,8 @@ TRACE_EVENT(xrep_calc_ag_resblks_btsize,
 		__field(xfs_agblock_t, refcbt_sz)
 	),
 	TP_fast_assign(
-		__entry->dev = mp->m_super->s_dev;
-		__entry->agno = agno;
+		__entry->dev = pag->pag_mount->m_super->s_dev;
+		__entry->agno = pag->pag_agno;
 		__entry->bnobt_sz = bnobt_sz;
 		__entry->inobt_sz = inobt_sz;
 		__entry->rmapbt_sz = rmapbt_sz;