[PATCH 02/14] Use sys_ni.c instead of #ifdef to disable fork on CONFIG_NOMMU

[Palmer Dabbelt]

I think this change actually doesn't do anything: __NR_fork was still
being defined either way, and on my machine fork() in  comes
from libc.

This just moves to the standard mechanism for defining syscalls that
aren't implemented instead, which has the side-effect of no longer
having an #ifdef CONFIG_* in a user-visible header.

Signed-off-by: Palmer Dabbelt 
Reviewed-by: Andrew Waterman 
Reviewed-by: Albert Ou 
---
 include/uapi/asm-generic/unistd.h | 4 
 kernel/sys_ni.c   | 1 +
 2 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/include/uapi/asm-generic/unistd.h 
b/include/uapi/asm-generic/unistd.h
index 1324b02..9a95912 100644
--- a/include/uapi/asm-generic/unistd.h
+++ b/include/uapi/asm-generic/unistd.h
@@ -871,11 +871,7 @@ __SYSCALL(__NR_uselib, sys_uselib)
 __SYSCALL(__NR__sysctl, sys_sysctl)
 
 #define __NR_fork 1079
-#ifdef CONFIG_MMU
 __SYSCALL(__NR_fork, sys_fork)
-#else
-__SYSCALL(__NR_fork, sys_ni_syscall)
-#endif /* CONFIG_MMU */
 
 #undef __NR_syscalls
 #define __NR_syscalls (__NR_fork+1)
diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c
index 0623787..e251b30 100644
--- a/kernel/sys_ni.c
+++ b/kernel/sys_ni.c
@@ -174,6 +174,7 @@ cond_syscall(sys_setfsuid);
 cond_syscall(sys_setfsgid);
 cond_syscall(sys_capget);
 cond_syscall(sys_capset);
+cond_syscall(sys_fork);
 
 /* arch-specific weak syscall entries */
 cond_syscall(sys_pciconfig_read);
-- 
2.4.10

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[PATCH 02/14] Use sys_ni.c instead of #ifdef to disable fork on CONFIG_NOMMU

[Palmer Dabbelt]

I think this change actually doesn't do anything: __NR_fork was still
being defined either way, and on my machine fork() in  comes
from libc.

This just moves to the standard mechanism for defining syscalls that
aren't implemented instead, which has the side-effect of no longer
having an #ifdef CONFIG_* in a user-visible header.

Signed-off-by: Palmer Dabbelt 
Reviewed-by: Andrew Waterman 
Reviewed-by: Albert Ou 
---
 include/uapi/asm-generic/unistd.h | 4 
 kernel/sys_ni.c   | 1 +
 2 files changed, 1 insertion(+), 4 deletions(-)

diff --git a/include/uapi/asm-generic/unistd.h 
b/include/uapi/asm-generic/unistd.h
index 1324b02..9a95912 100644
--- a/include/uapi/asm-generic/unistd.h
+++ b/include/uapi/asm-generic/unistd.h
@@ -871,11 +871,7 @@ __SYSCALL(__NR_uselib, sys_uselib)
 __SYSCALL(__NR__sysctl, sys_sysctl)
 
 #define __NR_fork 1079
-#ifdef CONFIG_MMU
 __SYSCALL(__NR_fork, sys_fork)
-#else
-__SYSCALL(__NR_fork, sys_ni_syscall)
-#endif /* CONFIG_MMU */
 
 #undef __NR_syscalls
 #define __NR_syscalls (__NR_fork+1)
diff --git a/kernel/sys_ni.c b/kernel/sys_ni.c
index 0623787..e251b30 100644
--- a/kernel/sys_ni.c
+++ b/kernel/sys_ni.c
@@ -174,6 +174,7 @@ cond_syscall(sys_setfsuid);
 cond_syscall(sys_setfsgid);
 cond_syscall(sys_capget);
 cond_syscall(sys_capset);
+cond_syscall(sys_fork);
 
 /* arch-specific weak syscall entries */
 cond_syscall(sys_pciconfig_read);
-- 
2.4.10

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