Messages in this thread Patch in this message | | | From | Luc Van Oostenryck <> | Subject | [PATCH] sparse: use identifiers to define address spaces | Date | Thu, 18 Jun 2020 00:02:26 +0200 |
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Currently, address spaces in warnings are displayed as '<asn:X>' with 'X' replaced with the address space's number. But since v0.6.0-rc1 (late December 2018), Sparse allows to define the address spaces using an identifier instead of a number. This identifier is then directly used in the warnings.
So, use the identifiers '__user', '__iomem', '__percpu' & '__rcu' for the corresponding address spaces. The default address space, __kernel, being not displayed in warnings, stays defined as '0'.
With this change, warnings used to be displayed as: cast removes address space '<asn:1>' of expression ... void [noderef] <asn:2> * will now be displayed as: cast removes address space '__user' of expression ... void [noderef] __iomem *
Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com> --- include/linux/compiler_types.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/include/linux/compiler_types.h b/include/linux/compiler_types.h index 21aed0981edf..e368384445b6 100644 --- a/include/linux/compiler_types.h +++ b/include/linux/compiler_types.h @@ -5,20 +5,20 @@ #ifndef __ASSEMBLY__ #ifdef __CHECKER__ -# define __user __attribute__((noderef, address_space(1))) # define __kernel __attribute__((address_space(0))) +# define __user __attribute__((noderef, address_space(__user))) # define __safe __attribute__((safe)) # define __force __attribute__((force)) # define __nocast __attribute__((nocast)) -# define __iomem __attribute__((noderef, address_space(2))) +# define __iomem __attribute__((noderef, address_space(__iomem))) # define __must_hold(x) __attribute__((context(x,1,1))) # define __acquires(x) __attribute__((context(x,0,1))) # define __releases(x) __attribute__((context(x,1,0))) # define __acquire(x) __context__(x,1) # define __release(x) __context__(x,-1) # define __cond_lock(x,c) ((c) ? ({ __acquire(x); 1; }) : 0) -# define __percpu __attribute__((noderef, address_space(3))) -# define __rcu __attribute__((noderef, address_space(4))) +# define __percpu __attribute__((noderef, address_space(__percpu))) +# define __rcu __attribute__((noderef, address_space(__rcu))) # define __private __attribute__((noderef)) extern void __chk_user_ptr(const volatile void __user *); extern void __chk_io_ptr(const volatile void __iomem *); -- 2.27.0
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