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| author | Jeffy Chen <jeffy.chen@rock-chips.com> | 2017-06-26 13:33:34 +0200 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2017-06-26 15:47:00 +0200 |
| commit | bf22ff45bed664aefb5c4e43029057a199b7070c (patch) | |
| tree | 2cb9598c3f09a473df3b4bfc6290e4575b4fcdab /block/blk-mq-cpumap.c | |
| parent | genirq: Set irq masked state when initializing irq_desc (diff) | |
| download | linux-bf22ff45bed664aefb5c4e43029057a199b7070c.tar.xz linux-bf22ff45bed664aefb5c4e43029057a199b7070c.zip | |
genirq: Avoid unnecessary low level irq function calls
Check irq state in enable/disable/unmask/mask_irq to avoid unnecessary
low level irq function calls.
This has two advantages:
- Conditionals are faster than hardware access
- Solves issues with the underlying refcounting of the pinctrl
infrastructure
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Jeffy Chen <jeffy.chen@rock-chips.com>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Cc: tfiga@chromium.org
Cc: briannorris@chromium.org
Cc: dianders@chromium.org
Link: http://lkml.kernel.org/r/1498476814-12563-2-git-send-email-jeffy.chen@rock-chips.com
Diffstat (limited to 'block/blk-mq-cpumap.c')
0 files changed, 0 insertions, 0 deletions