diff options
| author | Jeff Dike <jdike@addtoit.com> | 2007-06-16 10:16:09 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@woody.linux-foundation.org> | 2007-06-16 13:16:16 -0700 |
| commit | c539ab73070b381f0452dae791f891ec2515098e (patch) | |
| tree | 68e4e706fe31b88b26bd4b29eadb32440148eb3e /arch/um/os-Linux/start_up.c | |
| parent | f5a9c77df45b113d21b64cbc2bf6c72a0da48998 (diff) | |
uml: remove PAGE_SIZE from libc code
Distros seem to be removing PAGE_SIZE from asm/page.h. So, the libc side of
UML should stop using it.
I replace it with UM_KERN_PAGE_SIZE, which is defined to be the same as
PAGE_SIZE on the kernel side of the house. I could also use getpagesize(),
but it's more important that UML have the same value of PAGE_SIZE everywhere.
It's conceivable that it could be built with a larger PAGE_SIZE, and use of
getpagesize() would break that badly.
PAGE_MASK got the same treatment, as it is closely tied to PAGE_SIZE.
Signed-off-by: Jeff Dike <jdike@linux.intel.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/um/os-Linux/start_up.c')
| -rw-r--r-- | arch/um/os-Linux/start_up.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/arch/um/os-Linux/start_up.c b/arch/um/os-Linux/start_up.c index 3fc13fa8729d..46f613975c19 100644 --- a/arch/um/os-Linux/start_up.c +++ b/arch/um/os-Linux/start_up.c @@ -107,11 +107,12 @@ static int start_ptraced_child(void **stack_out) unsigned long sp; int pid, n, status; - stack = mmap(NULL, PAGE_SIZE, PROT_READ | PROT_WRITE | PROT_EXEC, + stack = mmap(NULL, UM_KERN_PAGE_SIZE, + PROT_READ | PROT_WRITE | PROT_EXEC, MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); if(stack == MAP_FAILED) fatal_perror("check_ptrace : mmap failed"); - sp = (unsigned long) stack + PAGE_SIZE - sizeof(void *); + sp = (unsigned long) stack + UM_KERN_PAGE_SIZE - sizeof(void *); pid = clone(ptrace_child, (void *) sp, SIGCHLD, NULL); if(pid < 0) fatal_perror("start_ptraced_child : clone failed"); @@ -153,7 +154,7 @@ static int stop_ptraced_child(int pid, void *stack, int exitcode, ret = -1; } - if(munmap(stack, PAGE_SIZE) < 0) + if(munmap(stack, UM_KERN_PAGE_SIZE) < 0) fatal_perror("check_ptrace : munmap failed"); return ret; } |