[XFS] 929956 add log debugging and tracing info

SGI-PV: 931456
SGI-Modid: xfs-linux:xfs-kern:23155a

Signed-off-by: Tim Shimmin <tes@sgi.com>
Signed-off-by: Nathan Scott <nathans@sgi.com>

1 files changed, 58 insertions, 10 deletions

diff --git a/fs/xfs/xfs_log_priv.h b/fs/xfs/xfs_log_priv.h
index 1a1d452f15f9..eb7fdc6ebc32 100644
--- a/fs/xfs/xfs_log_priv.h
+++ b/fs/xfs/xfs_log_priv.h
@@ -335,18 +335,66 @@ typedef __uint32_t xlog_tid_t;
 
 #define XLOG_COVER_OPS          5
 
+
+/* Ticket reservation region accounting */ 
+#if defined(XFS_LOG_RES_DEBUG)
+#define XLOG_TIC_LEN_MAX        15
+#define XLOG_TIC_RESET_RES(t) ((t)->t_res_num = \
+                                (t)->t_res_arr_sum = (t)->t_res_num_ophdrs = 0)
+#define XLOG_TIC_ADD_OPHDR(t) ((t)->t_res_num_ophdrs++)
+#define XLOG_TIC_ADD_REGION(t, len, type)                               \
+        do {                                                            \
+                if ((t)->t_res_num == XLOG_TIC_LEN_MAX) {               \
+                        /* add to overflow and start again */           \
+                        (t)->t_res_o_flow += (t)->t_res_arr_sum;        \
+                        (t)->t_res_num = 0;                             \
+                        (t)->t_res_arr_sum = 0;                         \
+                }                                                       \
+                (t)->t_res_arr[(t)->t_res_num].r_len = (len);           \
+                (t)->t_res_arr[(t)->t_res_num].r_type = (type);         \
+                (t)->t_res_arr_sum += (len);                            \
+                (t)->t_res_num++;                                       \
+        } while (0)
+
+/*
+ * Reservation region
+ * As would be stored in xfs_log_iovec but without the i_addr which
+ * we don't care about.
+ */
+typedef struct xlog_res {
+        uint    r_len;
+        uint    r_type;
+} xlog_res_t;
+#else
+#define XLOG_TIC_RESET_RES(t)
+#define XLOG_TIC_ADD_OPHDR(t)
+#define XLOG_TIC_ADD_REGION(t, len, type)
+#endif
+
+
 typedef struct xlog_ticket {
-        sv_t               t_sema;       /* sleep on this semaphore      :20 */
-        struct xlog_ticket *t_next;      /*                              : 4 */
-        struct xlog_ticket *t_prev;      /*                              : 4 */
-        xlog_tid_t         t_tid;        /* transaction identifier       : 4 */
-        int                t_curr_res;   /* current reservation in bytes : 4 */
-        int                t_unit_res;   /* unit reservation in bytes    : 4 */
-        __uint8_t          t_ocnt;       /* original count               : 1 */
-        __uint8_t          t_cnt;        /* current count                : 1 */
-        __uint8_t          t_clientid;   /* who does this belong to;     : 1 */
-        __uint8_t          t_flags;      /* properties of reservation    : 1 */
+        sv_t               t_sema;       /* sleep on this semaphore      : 20 */
+        struct xlog_ticket *t_next;      /*                              :4|8 */
+        struct xlog_ticket *t_prev;      /*                              :4|8 */
+        xlog_tid_t         t_tid;        /* transaction identifier       : 4  */
+        int                t_curr_res;   /* current reservation in bytes : 4  */
+        int                t_unit_res;   /* unit reservation in bytes    : 4  */
+        char               t_ocnt;       /* original count               : 1  */
+        char               t_cnt;        /* current count                : 1  */
+        char               t_clientid;   /* who does this belong to;     : 1  */
+        char               t_flags;      /* properties of reservation    : 1  */
+        uint               t_trans_type; /* transaction type             : 4  */
+
+#if defined (XFS_LOG_RES_DEBUG)
+        /* reservation array fields */
+        uint               t_res_num;                    /* num in array : 4 */
+        xlog_res_t         t_res_arr[XLOG_TIC_LEN_MAX];  /* array of res : X */ 
+        uint               t_res_num_ophdrs;             /* num op hdrs  : 4 */
+        uint               t_res_arr_sum;                /* array sum    : 4 */
+        uint               t_res_o_flow;                 /* sum overflow : 4 */
+#endif
 } xlog_ticket_t;
+
 #endif