tree c6790a014ead7c6432178aa2a0dac7eb41c25b40
parent bbc698636ed48b6fcd323964e0f847a6a796325d
author Roland McGrath <roland@redhat.com> 1217040360 -0700
committer Linus Torvalds <torvalds@linux-foundation.org> 1217098810 -0700

/proc/PID/syscall

This adds /proc/PID/syscall and /proc/PID/task/TID/syscall magic files.
These use task_current_syscall() to show the task's current system call
number and argument registers, stack pointer and PC.  For a task blocked
but not in a syscall, the file shows "-1" in place of the syscall number,
followed by only the SP and PC.  For a task that's not blocked, it shows
"running".

Signed-off-by: Roland McGrath <roland@redhat.com>
Cc: Oleg Nesterov <oleg@tv-sign.ru>
Reviewed-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>