Le 24/02/2018 à 11:14, Martin Husemann a écrit :
On Fri, Feb 23, 2018 at 08:09:09AM +0100, Maxime Villard wrote:... And? There is only one place where we use .if instead of #if, because there is a good reason for doing so.Which reason is that?
Well, look at the code. We want to control what gets compiled in the macro with an argument. SYSCALL_ENTRY syscall,is_svs=0 SYSCALL_ENTRY syscall_svs,is_svs=1 If the macro was defined as #if, you would need to do something like: SYSCALL_ENTRY(syscall) #define SYSCALL_ENTRY_SVS SYSCALL_ENTRY(syscall_svs) #undef SYSCALL_ENTRY_SVS Where SYSCALL_ENTRY would contain another macro that depends on whether SYSCALL_ENTRY_SVS is defined. The second approach is the one that complexifies the code. Maxime