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| author | Pasha Tatashin <[email protected]> | 2024-04-13 00:25:21 +0000 |
|---|---|---|
| committer | Joerg Roedel <[email protected]> | 2024-04-15 14:31:47 +0200 |
| commit | bd3520a93a84cd8c3897283e5891a9106fcf5acc (patch) | |
| tree | 664e71aad879fc1e588f25f29982a1bad2ef45ad /tools/perf/util/trace-event-scripting.c | |
| parent | 8e8b4ac5b0ab759fffcd4d802ab3e084e3609191 (diff) | |
iommu: observability of the IOMMU allocations
Add NR_IOMMU_PAGES into node_stat_item that counts number of pages
that are allocated by the IOMMU subsystem.
The allocations can be view per-node via:
/sys/devices/system/node/nodeN/vmstat.
For example:
$ grep iommu /sys/devices/system/node/node*/vmstat
/sys/devices/system/node/node0/vmstat:nr_iommu_pages 106025
/sys/devices/system/node/node1/vmstat:nr_iommu_pages 3464
The value is in page-count, therefore, in the above example
the iommu allocations amount to ~428M.
Signed-off-by: Pasha Tatashin <[email protected]>
Acked-by: David Rientjes <[email protected]>
Tested-by: Bagas Sanjaya <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Joerg Roedel <[email protected]>
Diffstat (limited to 'tools/perf/util/trace-event-scripting.c')
0 files changed, 0 insertions, 0 deletions