diff options
| author | Charles Mirabile <cmirabil@redhat.com> | 2025-10-24 09:36:42 +0100 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2025-10-24 21:34:32 +0200 |
| commit | 14ff9e54dd14339776afff78e2d29e0edb3a4402 (patch) | |
| tree | fedcf58984bcd30f74fb74ba0bab147793859a59 /drivers/pci/controller/dwc/pcie-qcom-common.c | |
| parent | 9dfb295a93eb109be989aac48f675db5b1c68bd8 (diff) | |
irqchip/sifive-plic: Cache the interrupt enable state
Optimize the PLIC driver by maintaining the interrupt enable state in the
handler's enable_save array during normal operation rather than only during
suspend/resume. This eliminates the need to read enable registers during
suspend and makes the enable state immediately available for other
purposes.
Let __plic_toggle() update both the hardware registers and the cached
enable_save state atomically within the existing enable_lock protection.
That allows to remove the suspend-time enable register reading since
handler::enable_save now always reflects the current state.
[ tglx: Massaged change log ]
Signed-off-by: Charles Mirabile <cmirabil@redhat.com>
Signed-off-by: Lucas Zampieri <lzampier@redhat.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://patch.msgid.link/20251024083647.475239-4-lzampier@redhat.com
Diffstat (limited to 'drivers/pci/controller/dwc/pcie-qcom-common.c')
0 files changed, 0 insertions, 0 deletions