diff options
Diffstat (limited to 'schulung_tools/notes/interrupts.txt')
| -rw-r--r-- | schulung_tools/notes/interrupts.txt | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/schulung_tools/notes/interrupts.txt b/schulung_tools/notes/interrupts.txt new file mode 100644 index 0000000..2f6edcc --- /dev/null +++ b/schulung_tools/notes/interrupts.txt @@ -0,0 +1,8 @@ +- programming interrupt handlers + - registering (request_irq) + - in_interrupt (check if in interrupt handler) + - in_atomic (cannot be scheduled away) + - no sleeping functions allowed + - can be shared + - handler code must check if it is the correct interrupt + - can be threaded (threadirqs) |