| Message ID | 1376148353-9699-1-git-send-email-Julia.Lawall@lip6.fr (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Sat, 2013-08-10 at 17:38 +0200, Julia Lawall wrote: > On Sat, 10 Aug 2013, Joe Perches wrote: > > On Sat, 2013-08-10 at 17:25 +0200, Julia Lawall wrote: > > > From: Julia Lawall <Julia.Lawall@lip6.fr> > > > Because ARRAY_AND_SIZE changes the apparent arity of a function, if it is > > > used for one call to a given function, it would be better, if possible, to > > > use it for all of them. > > I think it'd be better to remove ARRAY_AND_SIZE instead. > > I can do that, if it is wanted, but there are over 200 uses, and I think > it is a little bit positive in that it ensures that the array is passed > along with its own size. Maybe, but if it's generally accepted that it's useful, and I'm a little dubious because it does hide argument count in functions where it's used, the 6 #defines should be centralized in kernel.h $ git grep "define.*ARRAY_AND_SIZE" arch/arm/mach-kirkwood/common.h:#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x) arch/arm/mach-mmp/common.h:#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x) arch/arm/mach-pxa/generic.h:#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x) arch/arm/mach-ux500/db8500-regs.h:#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x) drivers/pinctrl/pinctrl-lantiq.h:#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x) sound/soc/pxa/mioa701_wm9713.c:#define ARRAY_AND_SIZE(x) (x), ARRAY_SIZE(x) A small counter-argument against using ARRAY_AND_SIZE: clkdev_add_table has 60+ uses, only 6 of those with ARRAY_AND_SIZE. I think it makes it difficult to do some cocinelle/spatch transform on clkdev_add_table.
Am 10.08.2013 17:32, schrieb Joe Perches: > On Sat, 2013-08-10 at 17:25 +0200, Julia Lawall wrote: >> From: Julia Lawall <Julia.Lawall@lip6.fr> >> >> Because ARRAY_AND_SIZE changes the apparent arity of a function, if it is >> used for one call to a given function, it would be better, if possible, to >> use it for all of them. > > I think it'd be better to remove ARRAY_AND_SIZE instead. > +1 :) re, wh
ARRAY_AND_SIZE() macro is horrible, and I would like it if it were removed. What I meant before was just that probably people will probably complain if we try to remove it. regards, dan carpenter
On Sun, 11 Aug 2013, Dan Carpenter wrote: > ARRAY_AND_SIZE() macro is horrible, and I would like it if it were > removed. What I meant before was just that probably people will > probably complain if we try to remove it. Well, I could either wait for someone to defend it, or send a patch getting rid of it and see what happens... I can't see what could go wrong with f(..., - ARRAY_AND_SIZE(e) + e, ARRAY_SIZE(e) , ...) so it should be an easy patch to create. julia
Am 11.08.2013 07:48, schrieb Julia Lawall: > On Sun, 11 Aug 2013, Dan Carpenter wrote: > >> ARRAY_AND_SIZE() macro is horrible, and I would like it if it were >> removed. What I meant before was just that probably people will >> probably complain if we try to remove it. > > Well, I could either wait for someone to defend it, or send a patch > getting rid of it and see what happens... I can't see what could go wrong > with > > f(..., > - ARRAY_AND_SIZE(e) > + e, ARRAY_SIZE(e) > , ...) > > so it should be an easy patch to create. > if it is not to much work, send a patch to get rid of it. It seems all agree that the disadvantages outweighs it advantages. just my 2 cents, wh
diff --git a/arch/arm/mach-pxa/stargate2.c b/arch/arm/mach-pxa/stargate2.c index 62aea3e..ee7a42e 100644 --- a/arch/arm/mach-pxa/stargate2.c +++ b/arch/arm/mach-pxa/stargate2.c @@ -608,12 +608,10 @@ static void __init imote2_init(void) imote2_stargate2_init(); - platform_add_devices(imote2_devices, ARRAY_SIZE(imote2_devices)); + platform_add_devices(ARRAY_AND_SIZE(imote2_devices)); - i2c_register_board_info(0, imote2_i2c_board_info, - ARRAY_SIZE(imote2_i2c_board_info)); - i2c_register_board_info(1, imote2_pwr_i2c_board_info, - ARRAY_SIZE(imote2_pwr_i2c_board_info)); + i2c_register_board_info(0, ARRAY_AND_SIZE(imote2_i2c_board_info)); + i2c_register_board_info(1, ARRAY_AND_SIZE(imote2_pwr_i2c_board_info)); pxa_set_mci_info(&imote2_mci_platform_data); pxa_set_udc_info(&imote2_udc_info); @@ -990,8 +988,7 @@ static void __init stargate2_init(void) platform_add_devices(ARRAY_AND_SIZE(stargate2_devices)); i2c_register_board_info(0, ARRAY_AND_SIZE(stargate2_i2c_board_info)); - i2c_register_board_info(1, stargate2_pwr_i2c_board_info, - ARRAY_SIZE(stargate2_pwr_i2c_board_info)); + i2c_register_board_info(1, ARRAY_AND_SIZE(stargate2_pwr_i2c_board_info)); pxa_set_mci_info(&stargate2_mci_platform_data);