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'config' can be unintialized, and although it's not really an error, it
still manages to trigger the -Werror with certain toolchains. Initialize
it early to shut up gcc.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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num_events should be compared > MAX_HWEVENTS and not >=. The latter was
used as a debugging test which accidentally slipped in.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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This adds in preliminary support for the SH-4A performance counters.
Presently only the first 2 counters are supported, as these are the ones
of the most interest to the perf tool and end users. Counter chaining is
not presently handled, so these are simply implemented as 32-bit
counters.
This also establishes a perf event support framework for other hardware
counters, which the existing SH-4 oprofile code will migrate over to as
the SH-4A support evolves.
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
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