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| author | Robert Richter <robert.richter@amd.com> | 2012-08-22 11:23:51 +0400 |
|---|---|---|
| committer | Robert Richter <robert.richter@amd.com> | 2012-08-27 16:49:39 +0400 |
| commit | 61bccf191fe2d55b8d003b4ea3f94913745aaefa (patch) | |
| tree | f91fb75d321f775bf4ea59e35c0534320d7c4597 /drivers/iommu/tegra-gart.c | |
| parent | 81ff3478d9ba7f0b48b0abef740e542fd83adf79 (diff) | |
| download | linux-61bccf191fe2d55b8d003b4ea3f94913745aaefa.tar.xz | |
oprofile: Remove 'WQ on CPUx, prefer CPUy' warning
Under certain workloads we see the following warnings:
WQ on CPU0, prefer CPU1
WQ on CPU0, prefer CPU2
WQ on CPU0, prefer CPU3
It warns the user that the wq to access a per-cpu buffers runs not on
the same cpu. This happens if the wq is rescheduled on a different cpu
than where the buffer is located. This was probably implemented to
detect performance issues. Not sure if there actually is one as the
buffers are copied to a single buffer anyway which should be the
actual bottleneck.
We wont change WQ implementation. Since a user can do nothing the
warning is pointless. Removing it.
Cc: Andi Kleen <andi@firstfloor.org>
Signed-off-by: Robert Richter <robert.richter@amd.com>
Diffstat (limited to 'drivers/iommu/tegra-gart.c')
0 files changed, 0 insertions, 0 deletions