[patch V2 00/45] genirq: Cleanups and conversion to lock guards

Thomas Gleixner
2025-04-29T06:55:01Z

This is V2 of the generic interrupt locking overhaul. V1 can be found here:

https://lore.kernel.org/all/20250313154615.860723120@linutronix.de

The generic interrupt core code has accumulated quite some inconsistencies
over time and a common pattern in various API functions is:

unsigned long flags;
struct irq_desc *desc = irq_get_desc_[bus]lock(irq, &flags, mode);

if (!desc)
return -EINVAL;
....
irq_put_desc_[bus]unlock(desc, flags);

That's awkward and requires gotos in failure paths.

This series provides conditional lock guards and converts the core code
over to use those guards. Along with that it converts the other open coded
lock/unlock pairs and fixes up coding and kernel doc formatting. The
conversions were partially done with Coccinelle where possible.

Changes vs. V1:

- Rebase on latest tip irq/core

- Make coding style consistent (Jiri, Shrikanth)

The series applies on

git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip.git irq/core

and is also available from git:

git://git.kernel.org/pub/scm/linux/kernel/git/tglx/devel.git irq/core

Thanks,

tglx

---
include/linux/irq.h | 2
kernel/irq/autoprobe.c | 26 -
kernel/irq/chip.c | 609 ++++++++++---------------
kernel/irq/cpuhotplug.c | 10
kernel/irq/debugfs.c | 3
kernel/irq/internals.h | 47 -
kernel/irq/irqdesc.c | 127 +----
kernel/irq/manage.c | 1154 ++++++++++++++++++++----------------------------
kernel/irq/pm.c | 38 -
kernel/irq/proc.c | 65 --
kernel/irq/resend.c | 50 --
kernel/irq/spurious.c | 104 +---
12 files changed, 913 insertions(+), 1322 deletions(-)