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Shrink task_struct if CONFIG_FUTEX=n

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robust_list, compat_robust_list, pi_state_list, pi_state_cache are
really used if futexes are on.

Signed-off-by: Alexey Dobriyan <adobriyan@sw.ru>
Acked-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alexey Dobriyan
2007-10-16 23:27:30 -07:00
committed by Linus Torvalds
parent bcbba6c10e
commit 42b2dd0a02
3 changed files with 9 additions and 3 deletions
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kernel/exit.c
+5 -1
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@@ -947,11 +947,13 @@ fastcall NORET_TYPE void do_exit(long code)
exit_itimers(tsk->signal);
}
acct_collect(code, group_dead);
#ifdef CONFIG_FUTEX
if (unlikely(tsk->robust_list))
exit_robust_list(tsk);
#if defined(CONFIG_FUTEX) && defined(CONFIG_COMPAT)
#ifdef CONFIG_COMPAT
if (unlikely(tsk->compat_robust_list))
compat_exit_robust_list(tsk);
#endif
#endif
if (group_dead)
tty_audit_exit();
@@ -987,6 +989,7 @@ fastcall NORET_TYPE void do_exit(long code)
mpol_free(tsk->mempolicy);
tsk->mempolicy = NULL;
#endif
#ifdef CONFIG_FUTEX
/*
* This must happen late, after the PID is not
* hashed anymore:
@@ -995,6 +998,7 @@ fastcall NORET_TYPE void do_exit(long code)
exit_pi_state_list(tsk);
if (unlikely(current->pi_state_cache))
kfree(current->pi_state_cache);
#endif
/*
* Make sure we are holding no locks:
*/