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| author | Hiroshi Doyu <hdoyu@nvidia.com> | 2012-08-02 11:46:40 +0300 |
|---|---|---|
| committer | Joerg Roedel <joerg.roedel@amd.com> | 2012-08-03 17:53:55 +0200 |
| commit | 39abf8aa7dfad0badb4741373023cda369aacc8e (patch) | |
| tree | b1e845941ab5a29f4907922a6406d2db13bc38e5 /drivers/auxdisplay | |
| parent | 0d7614f09c1ebdbaa1599a5aba7593f147bf96ee (diff) | |
| download | op-kernel-dev-39abf8aa7dfad0badb4741373023cda369aacc8e.zip op-kernel-dev-39abf8aa7dfad0badb4741373023cda369aacc8e.tar.gz | |
iommu/tegra: smmu: debugfs for TLB/PTC statistics
Add debugfs entries to collect TLB/PTC statistics.
$ echo "reset" > /sys/kernel/debug/smmu/mc/{tlb,ptc}
$ echo "on" > /sys/kernel/debug/smmu/mc/{tlb,ptc}
$ echo "off" > /sys/kernel/debug/smmu/mc/{tlb,ptc}
$ cat /sys/kernel/debug/smmu/mc/{tlb,ptc}
hit:0014910c miss:00014d22
The above format is:
hit:<HIT count><SPC>miss:<MISS count><SPC><CR+LF>
fscanf(fp, "hit:%lx miss:%lx", &hit, &miss);
Signed-off-by: Hiroshi Doyu <hdoyu@nvidia.com>
Signed-off-by: Joerg Roedel <joerg.roedel@amd.com>
Diffstat (limited to 'drivers/auxdisplay')
0 files changed, 0 insertions, 0 deletions
