From: Bill Pringlemeir <bpringle@sympatico.ca>
To: linux-kernel@vger.kernel.org
Subject: Newbie idiotic questions.
Date: 16 Jun 2001 21:19:47 -0400 [thread overview]
Message-ID: <m2d78352do.fsf@sympatico.ca> (raw)
I have been looking at the emu10k1 driver and I had a few questions
about general idioms used there.
In a line like this,
[main.c, line 175]
for (count = 0; count < sizeof(card->digmix) / sizeof(card->digmix[0]); count++) {
Isn't there some sort of `ALEN' macro available, or is this
considered to muddy things by using a macro?
[main.c, line 223]
if ((card->mpuout = kmalloc(sizeof(struct emu10k1_mpuout), GFP_KERNEL))
Why is the struct type referenced for the allocation size? Why not,
if ((card->mpuout = kmalloc(sizeof(card->mpuout), GFP_KERNEL))
This seems to get the size for the actual object being allocated.
[cardmi.c, line 42]
static struct {
int (*Fn) (struct emu10k1_mpuin *, u8);
} midistatefn[] = {
...
Why aren't all the gobs of constant data in this driver declared as
constant? Do it give a performance advantage by having the data in a
different MMU section and better cache effects or something?
Thanks for any helpful pointers. I did read the FAQ. I am just
wonder if I would get screamed at for changing things like this and
why... so I will probably get yelled at for suggesting them anyway,
but at least I won't have went through the effort. Now that I have
pointed that out, the will probably irk people even more...
regards,
Bill Pringlemeir.
next reply other threads:[~2001-06-17 1:22 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2001-06-17 1:19 Bill Pringlemeir [this message]
2001-06-17 1:32 ` Newbie idiotic questions Jeff Garzik
2001-06-17 10:48 ` Daniel Phillips
2001-06-17 12:27 ` rjd
2001-06-17 15:01 ` Daniel Phillips
2001-06-17 15:08 ` Jeff Garzik
2001-06-17 15:38 ` David Flynn
2001-06-17 15:54 ` Jeff Garzik
2001-06-17 19:18 ` Geert Uytterhoeven
2001-06-17 20:08 ` Daniel Phillips
2001-06-17 20:37 ` Alexander Viro
2001-06-17 21:28 ` Daniel Phillips
2001-06-17 22:33 ` Alexander Viro
2001-06-18 9:14 ` Roman Zippel
2001-06-18 9:30 ` Alexander Viro
2001-06-17 21:17 ` Bill Pringlemeir
2001-06-17 1:35 ` Richard B. Johnson
2001-06-17 3:01 ` Arnaldo Carvalho de Melo
2001-06-17 8:06 ` rjd
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