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home:steve-beattie
kernel
linux-2.6-debug-sleep-in-irq-warning.patch
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File linux-2.6-debug-sleep-in-irq-warning.patch of Package kernel
warn if we sleep in an irq for a long time. diff -urNp --exclude-from=/home/davej/.exclude linux-3022/include/linux/delay.h linux-10000/include/linux/delay.h --- linux-3022/include/linux/delay.h +++ linux-10000/include/linux/delay.h @@ -10,7 +10,7 @@ extern unsigned long loops_per_jiffy; #include <asm/delay.h> - +#include <linux/hardirq.h> /* * Using udelay() for intervals greater than a few milliseconds can * risk overflow for high loops_per_jiffy (high bogomips) machines. The @@ -26,9 +26,13 @@ extern unsigned long loops_per_jiffy; #endif #ifndef mdelay -#define mdelay(n) (\ - (__builtin_constant_p(n) && (n)<=MAX_UDELAY_MS) ? udelay((n)*1000) : \ - ({unsigned long __ms=(n); while (__ms--) udelay(1000);})) +#define mdelay(n) ( \ +{ \ + static int warned=0; \ + unsigned long __ms=(n); \ + WARN_ON(in_irq() && !(warned++)); \ + while (__ms--) udelay(1000); \ +}) #endif #ifndef ndelay
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