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| author | Jean PIHET <jpihet@mvista.com> | 2009-12-15 12:36:10 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@arm.linux.org.uk> | 2009-12-22 16:32:31 +0100 |
| commit | 3321c2bceab3ae6efdb2dc119c41d78e85d4b661 (patch) | |
| tree | 73f0472cfc082893c0d71e32a0a8b3109e6133a5 /tools/perf/Documentation/perf-bench.txt | |
| parent | ARM: add missing include to nwflash.c (diff) | |
| download | linux-3321c2bceab3ae6efdb2dc119c41d78e85d4b661.tar.xz linux-3321c2bceab3ae6efdb2dc119c41d78e85d4b661.zip | |
ARM: 5849/1: ARMv7: fix Oprofile events count
On Oprofile ARMv7 the PMNC_D bit was set to lower the PMU IRQs
and so to decrease the risk of errata #628216 from appearing.
The effect of setting the PMNC_D bit is that the CCNT counter
is divided by 64, making the program counter events count
inaccurate.
The new OMAP3 r4 cores should have that errata fixed.
The PMNC_D bit should not be set, this patch fixes it.
Signed-off-by: Jean Pihet <jpihet@mvista.com>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
Diffstat (limited to 'tools/perf/Documentation/perf-bench.txt')
0 files changed, 0 insertions, 0 deletions