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The LITMUS^RT kernel.

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author	Linus Walleij <triad@df.lth.se>	2009-04-16 16:17:56 -0400
committer	Russell King <rmk+kernel@arm.linux.org.uk>	2009-04-16 16:29:46 -0400
commit	77f4025b5e7b290f5c3cc03aa6242328694c71d4 (patch)
tree	03150e3fe3075eeadf3df3b978766bae139b615a /net/ipv4/tcp_yeah.c
parent	5e075cb5cee4faecc82e2b8a04e640176629976e (diff)

[ARM] 5455/1: Fix IRQ noise from VIC code

The VIC code will attempt to perform som default set_irq_chip() and set_irq_chip_data() on all IRQs supported by the VIC, while the new IRQ handling code strictly checks for the global NR_IRQS to be respected also for these IRQs. This patch will respect the interrupt mask passed to the VIC driver and will prevent it from attempting to call these functions on any unused interrupts. Signed-off-by: Linus Walleij <linus.walleij@stericsson.com> Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>

Diffstat (limited to 'net/ipv4/tcp_yeah.c')

0 files changed, 0 insertions, 0 deletions

@broadcast: function to broadcast events * @list: list head for the management code * @mode: operating mode assigned by the management code * @next_event: local storage for the next event in oneshot mode * @retries: number of forced programming retries */ struct clock_event_device { const char *name; unsigned int features; u64 max_delta_ns; u64 min_delta_ns; u32 mult; u32 shift; int rating; int irq; const struct cpumask *cpumask; int (*set_next_event)(unsigned long evt, struct clock_event_device *); void (*set_mode)(enum clock_event_mode mode, struct clock_event_device *); void (*event_handler)(struct clock_event_device *); void (*broadcast)(const struct cpumask *mask); struct list_head list; enum clock_event_mode mode; ktime_t next_event; unsigned long retries; }; /* * Calculate a multiplication factor for scaled math, which is used to convert * nanoseconds based values to clock ticks: * * clock_ticks = (nanoseconds * factor) >> shift. * * div_sc is the rearranged equation to calculate a factor from a given clock * ticks / nanoseconds ratio: * * factor = (clock_ticks << shift) / nanoseconds */ static inline unsigned long div_sc(unsigned long ticks, unsigned long nsec, int shift) { uint64_t tmp = ((uint64_t)ticks) << shift; do_div(tmp, nsec); return (unsigned long) tmp; } /* Clock event layer functions */ extern u64 clockevent_delta2ns(unsigned long latch, struct clock_event_device *evt); extern void clockevents_register_device(struct clock_event_device *dev); extern void clockevents_exchange_device(struct clock_event_device *old, struct clock_event_device *new); extern void clockevents_set_mode(struct clock_event_device *dev, enum clock_event_mode mode); extern int clockevents_register_notifier(struct notifier_block *nb); extern int clockevents_program_event(struct clock_event_device *dev, ktime_t expires, ktime_t now); extern void clockevents_handle_noop(struct clock_event_device *dev); static inline void clockevents_calc_mult_shift(struct clock_event_device *ce, u32 freq, u32 minsec) { return clocks_calc_mult_shift(&ce->mult, &ce->shift, NSEC_PER_SEC, freq, minsec); } #ifdef CONFIG_GENERIC_CLOCKEVENTS extern void clockevents_notify(unsigned long reason, void *arg); #else # define clockevents_notify(reason, arg) do { } while (0) #endif #else /* CONFIG_GENERIC_CLOCKEVENTS_BUILD */ #define clockevents_notify(reason, arg) do { } while (0) #endif #endif


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