Messages in this thread Patch in this message | | | Subject | [patch 6/7] uml: commentary about forking flag | From | blaisorblade@yahoo ... | Date | Sun, 24 Apr 2005 20:19:22 +0200 |
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Add some commentary about UML internals, for a strange trick.
Signed-off-by: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it> ---
linux-2.6.12-paolo/include/asm-um/processor-generic.h | 4 ++++ 1 files changed, 4 insertions(+)
diff -puN include/asm-um/processor-generic.h~uml-commentary-about-forking-flag include/asm-um/processor-generic.h --- linux-2.6.12/include/asm-um/processor-generic.h~uml-commentary-about-forking-flag 2005-04-24 20:17:06.000000000 +0200 +++ linux-2.6.12-paolo/include/asm-um/processor-generic.h 2005-04-24 20:17:06.000000000 +0200 @@ -17,6 +17,10 @@ struct task_struct; struct mm_struct; struct thread_struct { + /* This flag is set to 1 before calling do_fork (and analyzed in + * copy_thread) to mark that we are begin called from userspace (fork / + * vfork / clone), and reset to 0 after. It is left to 0 when called + * from kernelspace (i.e. kernel_thread() or fork_idle(), as of 2.6.11). */ int forking; int nsyscalls; struct pt_regs regs; _ - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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