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| author | Ingo Molnar <mingo@elte.hu> | 2006-03-27 01:16:22 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-27 08:44:49 -0800 |
| commit | 0771dfefc9e538f077d0b43b6dec19a5a67d0e70 (patch) | |
| tree | 696267e69228b7406b337f9651dedc75055a589e /include/linux/threads.h | |
| parent | e9056f13bfcdd054a0c3d730e4e096748d8a363a (diff) | |
| download | lwn-0771dfefc9e538f077d0b43b6dec19a5a67d0e70.tar.gz lwn-0771dfefc9e538f077d0b43b6dec19a5a67d0e70.zip | |
[PATCH] lightweight robust futexes: core
Add the core infrastructure for robust futexes: structure definitions, the new
syscalls and the do_exit() based cleanup mechanism.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Signed-off-by: Arjan van de Ven <arjan@infradead.org>
Acked-by: Ulrich Drepper <drepper@redhat.com>
Cc: Michael Kerrisk <mtk-manpages@gmx.net>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
Diffstat (limited to 'include/linux/threads.h')
| -rw-r--r-- | include/linux/threads.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/include/linux/threads.h b/include/linux/threads.h index b59738ac6197..e646bcdf2614 100644 --- a/include/linux/threads.h +++ b/include/linux/threads.h @@ -28,7 +28,8 @@ #define PID_MAX_DEFAULT (CONFIG_BASE_SMALL ? 0x1000 : 0x8000) /* - * A maximum of 4 million PIDs should be enough for a while: + * A maximum of 4 million PIDs should be enough for a while. + * [NOTE: PID/TIDs are limited to 2^29 ~= 500+ million, see futex.h.] */ #define PID_MAX_LIMIT (CONFIG_BASE_SMALL ? PAGE_SIZE * 8 : \ (sizeof(long) > 4 ? 4 * 1024 * 1024 : PID_MAX_DEFAULT)) |