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| author |   Jiang Liu <jiang.liu@linux.intel.com> | 2015-06-01 16:05:12 +0800 |
|---|---|---|
| committer |   Thomas Gleixner <tglx@linutronix.de> | 2015-06-12 16:54:21 +0200 |
| commit | 0d0b4c866bcce647f40d73efe5e90aeeb079050a (patch) | |
| tree | 9a4dc1dd5f52dcc5b4455c3e75c2678b393bc06d /include/linux/irqdesc.h | |
| parent | genirq: Prevent crash in irq_move_irq() (diff) | |
| download | linux-dev-0d0b4c866bcce647f40d73efe5e90aeeb079050a.tar.xz linux-dev-0d0b4c866bcce647f40d73efe5e90aeeb079050a.zip | |
genirq: Introduce struct irq_common_data to host shared irq data
With the introduction of hierarchy irqdomain, struct irq_data becomes
per-chip instead of per-irq and there may be multiple irq_datas
associated with the same irq. Some per-irq data stored in struct
irq_data now may get duplicated into multiple irq_datas, and causes
inconsistent view.
So introduce struct irq_common_data to host per-irq common data and to
achieve consistent view among irq_chips.
Signed-off-by: Jiang Liu <jiang.liu@linux.intel.com>
Cc: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
Cc: Tony Luck <tony.luck@intel.com>
Cc: Bjorn Helgaas <bhelgaas@google.com>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Randy Dunlap <rdunlap@infradead.org>
Cc: Yinghai Lu <yinghai@kernel.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Jason Cooper <jason@lakedaemon.net>
Cc: Kevin Cernekee <cernekee@gmail.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Marc Zyngier <marc.zyngier@arm.com>
Link: http://lkml.kernel.org/r/1433145945-789-4-git-send-email-jiang.liu@linux.intel.com
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/linux/irqdesc.h')
| -rw-r--r-- | include/linux/irqdesc.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/irqdesc.h b/include/linux/irqdesc.h index a113a8dc7438..c52d1480f272 100644 --- a/include/linux/irqdesc.h +++ b/include/linux/irqdesc.h @@ -17,7 +17,7 @@ struct pt_regs; /** * struct irq_desc - interrupt descriptor - * @irq_data: per irq and chip data passed down to chip functions + * @irq_common_data: per irq and chip data passed down to chip functions * @kstat_irqs: irq stats per cpu * @handle_irq: highlevel irq-events handler * @preflow_handler: handler called before the flow handler (currently used by sparc) @@ -47,6 +47,7 @@ struct pt_regs; * @name: flow handler name for /proc/interrupts output */ struct irq_desc { + struct irq_common_data irq_common_data; struct irq_data irq_data; unsigned int __percpu *kstat_irqs; irq_flow_handler_t handle_irq; |