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From: Mark Mielke <mark@mark.mielke.cc>
To: linux-kernel@vger.kernel.org
Subject: PROT_SEM + FUTEX
Date: Mon, 11 Nov 2002 01:12:17 -0500	[thread overview]
Message-ID: <20021111061217.GA28158@mark.mielke.cc> (raw)

Is PROT_SEM necessary anymore? 2.5.46 does not seem to include any
references to it that adjust behaviour for pages. Would it be
reasonable to remove it, or #define PROT_SEM to (0) to avoid
confusion?

I am beginning to play with the FUTEX system call. I am hoping that
PROT_SEM is not required, as I intend to scatter the words throughout
memory, and it would be a real pain to mprotect(PROT_SEM) each page
that contains a FUTEX word.

For systems that do not support the FUTEX system call (2.4.x?),
is sched_yield() the best alternative?

Thanks,
mark

-- 
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             reply	other threads:[~2002-11-11  6:00 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2002-11-11  6:12 Mark Mielke [this message]
  -- strict thread matches above, loose matches on Subject: below --
2002-11-11 20:28 PROT_SEM + FUTEX Perez-Gonzalez, Inaky
2002-11-11 21:46 ` Mark Mielke
2002-11-11 22:31 Perez-Gonzalez, Inaky
2002-11-11 23:08 ` Mark Mielke
2002-11-12  0:31 Perez-Gonzalez, Inaky

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