From: David Miller <davem@davemloft.net>
To: linuxppc-dev@ozlabs.org
Cc: paulus@samba.org
Subject: perf_counter vs. oprofile
Date: Wed, 21 Jan 2009 21:26:34 -0800 (PST) [thread overview]
Message-ID: <20090121.212634.237965647.davem@davemloft.net> (raw)
Paul, I just noticed that right now if perf counter is enabled, the
oprofile module load will always fail because the powerpc perf counter
support unconditionally grabs the PMC hardware using
reserve_pmc_hardware() in an arch_initcall()
There really needs to be a way to segregate these multiple users of
the PMC device. For example, if I'm not using the perf counter
APIs at all I should be able to use oprofile if I want to.
Anyways, just FYI...
next reply other threads:[~2009-01-22 5:26 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-01-22 5:26 David Miller [this message]
2009-01-22 7:06 ` perf_counter vs. oprofile Paul Mackerras
2009-01-22 7:12 ` David Miller
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