On Mon, 8 Jul 2002, Muthukumar Ratty wrote: > > I am not sure, but can this be memory allignment problem ? > > you can check this by adding one more (dummy ) element of __u32 length (MIPS > > should print 40 insted of 44 and pc shuld print 40 as expected ) > > You are right. when I add a __u32 dummy to the tc_stats then it still > prints the size as 40. Is it get padded at the end? My main concern is, > is this a normal behavior or do I need to upgrade my MIPS build > environment? The alignment rule for 64-bit value is 8 bytes on MIPS, and only 4 bytes on ia32. Since sizeof(struct ...) must return a value that's a multiple of the alignment rule for the largest element in the struct, it returns 40 on MIPS. > Thanks a lot, > Muthu. > > > > > if it works then you can get rid of the above problem by changing the > > compilar settings. > > > > Regards, > > venkatesh M R > > > > > > > > > > Muthukumar Ratty wrote: > > > > > Hi, > > > In my MIPS system sizeof(struct tc_stats) returns 40 but it returns 36 in > > > i386 PC. > > > > > > tc_stats is defined in include/linux/pkt_sched.c as > > > struct tc_stats > > > { > > > __u64 bytes; /* NUmber of enqueues bytes */ > > > __u32 packets; /* Number of enqueued packets */ > > > __u32 drops; /* Packets dropped because of lack > > > of resources */ > > > __u32 overlimits; /* Number of throttle events when > > > this > > > * flow goes out of allocated > > > bandwidth*/ > > > __u32 bps; /* Current flow byte rate */ > > > __u32 pps; /* Current flow packet rate */ > > > __u32 qlen; > > > __u32 backlog; > > > #ifdef __KERNEL__ > > > spinlock_t *lock; > > > #endif > > > }; > > > I printed the offsets of individual fields and they are same in i386 and > > > MIPS. If the "spinlock_t" is defined then this may be the case but I > > > am compiling an application, so it shouldnt be there? Right now I > > > think the problem could be with the "sizeof" operator. > > > Could someone please let me know if this is the case or I am doing > > > something wrong. Also any solution. Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds