diff options
Diffstat (limited to 'Documentation/kernel-hacking')
-rw-r--r-- | Documentation/kernel-hacking/hacking.rst | 8 | ||||
-rw-r--r-- | Documentation/kernel-hacking/locking.rst | 12 |
2 files changed, 7 insertions, 13 deletions
diff --git a/Documentation/kernel-hacking/hacking.rst b/Documentation/kernel-hacking/hacking.rst index 451523424942..55bd37a2efb0 100644 --- a/Documentation/kernel-hacking/hacking.rst +++ b/Documentation/kernel-hacking/hacking.rst @@ -76,8 +76,8 @@ handler is never re-entered: if the same interrupt arrives, it is queued fast: frequently it simply acknowledges the interrupt, marks a 'software interrupt' for execution and exits. -You can tell you are in a hardware interrupt, because -:c:func:`in_irq()` returns true. +You can tell you are in a hardware interrupt, because in_hardirq() returns +true. .. warning:: @@ -601,7 +601,7 @@ Defined in ``include/linux/export.h`` This is the variant of `EXPORT_SYMBOL()` that allows specifying a symbol namespace. Symbol Namespaces are documented in -:doc:`../core-api/symbol-namespaces` +Documentation/core-api/symbol-namespaces.rst :c:func:`EXPORT_SYMBOL_NS_GPL()` -------------------------------- @@ -610,7 +610,7 @@ Defined in ``include/linux/export.h`` This is the variant of `EXPORT_SYMBOL_GPL()` that allows specifying a symbol namespace. Symbol Namespaces are documented in -:doc:`../core-api/symbol-namespaces` +Documentation/core-api/symbol-namespaces.rst Routines and Conventions ======================== diff --git a/Documentation/kernel-hacking/locking.rst b/Documentation/kernel-hacking/locking.rst index ed1284c6f078..90bc3f51eda9 100644 --- a/Documentation/kernel-hacking/locking.rst +++ b/Documentation/kernel-hacking/locking.rst @@ -94,16 +94,10 @@ primitives, but I'll pretend they don't exist. Locking in the Linux Kernel =========================== -If I could give you one piece of advice: never sleep with anyone crazier -than yourself. But if I had to give you advice on locking: **keep it -simple**. +If I could give you one piece of advice on locking: **keep it simple**. Be reluctant to introduce new locks. -Strangely enough, this last one is the exact reverse of my advice when -you **have** slept with someone crazier than yourself. And you should -think about getting a big dog. - Two Main Types of Kernel Locks: Spinlocks and Mutexes ----------------------------------------------------- @@ -1406,7 +1400,7 @@ bh half will be running at any time. Hardware Interrupt / Hardware IRQ - Hardware interrupt request. in_irq() returns true in a + Hardware interrupt request. in_hardirq() returns true in a hardware interrupt handler. Interrupt Context @@ -1418,7 +1412,7 @@ SMP (``CONFIG_SMP=y``). Software Interrupt / softirq - Software interrupt handler. in_irq() returns false; + Software interrupt handler. in_hardirq() returns false; in_softirq() returns true. Tasklets and softirqs both fall into the category of 'software interrupts'. |