locking.rst: reformat locking table

Use a different markup for this table, in order to make it
smaller when seeing in text mode.
Signed-off-by: NMauro Carvalho Chehab <mchehab@s-opensource.com>

Documentation/kernel-hacking/locking.rst

@@ -319,29 +319,20 @@ Remember the advice above: you can always use
 :c:func:`spin_lock_irqsave()`, which is a superset of all other
 spinlock primitives.
 
-+------------------+-----------------+-----------------+-------------+-------------+-------------+-------------+-----------+-----------+------------------+------------------+
-|                  | IRQ Handler A   | IRQ Handler B   | Softirq A   | Softirq B   | Tasklet A   | Tasklet B   | Timer A   | Timer B   | User Context A   | User Context B   |
-+------------------+-----------------+-----------------+-------------+-------------+-------------+-------------+-----------+-----------+------------------+------------------+
-| IRQ Handler A    | None            |                 |             |             |             |             |           |           |                  |                  |
-+------------------+-----------------+-----------------+-------------+-------------+-------------+-------------+-----------+-----------+------------------+------------------+
-| IRQ Handler B    | SLIS            | None            |             |             |             |             |           |           |                  |                  |
-+------------------+-----------------+-----------------+-------------+-------------+-------------+-------------+-----------+-----------+------------------+------------------+
-| Softirq A        | SLI             | SLI             | SL          |             |             |             |           |           |                  |                  |
-+------------------+-----------------+-----------------+-------------+-------------+-------------+-------------+-----------+-----------+------------------+------------------+
-| Softirq B        | SLI             | SLI             | SL          | SL          |             |             |           |           |                  |                  |
-+------------------+-----------------+-----------------+-------------+-------------+-------------+-------------+-----------+-----------+------------------+------------------+
-| Tasklet A        | SLI             | SLI             | SL          | SL          | None        |             |           |           |                  |                  |
-+------------------+-----------------+-----------------+-------------+-------------+-------------+-------------+-----------+-----------+------------------+------------------+
-| Tasklet B        | SLI             | SLI             | SL          | SL          | SL          | None        |           |           |                  |                  |
-+------------------+-----------------+-----------------+-------------+-------------+-------------+-------------+-----------+-----------+------------------+------------------+
-| Timer A          | SLI             | SLI             | SL          | SL          | SL          | SL          | None      |           |                  |                  |
-+------------------+-----------------+-----------------+-------------+-------------+-------------+-------------+-----------+-----------+------------------+------------------+
-| Timer B          | SLI             | SLI             | SL          | SL          | SL          | SL          | SL        | None      |                  |                  |
-+------------------+-----------------+-----------------+-------------+-------------+-------------+-------------+-----------+-----------+------------------+------------------+
-| User Context A   | SLI             | SLI             | SLBH        | SLBH        | SLBH        | SLBH        | SLBH      | SLBH      | None             |                  |
-+------------------+-----------------+-----------------+-------------+-------------+-------------+-------------+-----------+-----------+------------------+------------------+
-| User Context B   | SLI             | SLI             | SLBH        | SLBH        | SLBH        | SLBH        | SLBH      | SLBH      | MLI              | None             |
-+------------------+-----------------+-----------------+-------------+-------------+-------------+-------------+-----------+-----------+------------------+------------------+
+============== ============= ============= ========= ========= ========= ========= ======= ======= ============== ==============
+.              IRQ Handler A IRQ Handler B Softirq A Softirq B Tasklet A Tasklet B Timer A Timer B User Context A User Context B
+============== ============= ============= ========= ========= ========= ========= ======= ======= ============== ==============
+IRQ Handler A  None
+IRQ Handler B  SLIS          None
+Softirq A      SLI           SLI           SL
+Softirq B      SLI           SLI           SL        SL
+Tasklet A      SLI           SLI           SL        SL        None
+Tasklet B      SLI           SLI           SL        SL        SL        None
+Timer A        SLI           SLI           SL        SL        SL        SL        None
+Timer B        SLI           SLI           SL        SL        SL        SL        SL      None
+User Context A SLI           SLI           SLBH      SLBH      SLBH      SLBH      SLBH    SLBH    None
+User Context B SLI           SLI           SLBH      SLBH      SLBH      SLBH      SLBH    SLBH    MLI            None
+============== ============= ============= ========= ========= ========= ========= ======= ======= ============== ==============
 
 Table: Table of Locking Requirements