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| author |   sukadev@linux.vnet.ibm.com <sukadev@linux.vnet.ibm.com> | 2014-09-30 23:03:18 -0700 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2014-10-07 16:57:10 +1100 |
| commit | 56f12bee55d740dc47eed0ca9d5c72cffdffd6cf (patch) | |
| tree | 67352cbe11600450a97f3c49e3a18eb48e8914f4 /Documentation/ABI | |
| parent | powerpc/perf/hv-24x7: use kmem_cache instead of aligned stack allocations (diff) | |
| download | linux-dev-56f12bee55d740dc47eed0ca9d5c72cffdffd6cf.tar.xz linux-dev-56f12bee55d740dc47eed0ca9d5c72cffdffd6cf.zip | |
powerpc/perf/hv-24x7: Simplify catalog_read()
catalog_read() implements the read interface for the sysfs file
/sys/bus/event_source/devices/hv_24x7/interface/catalog
It essentially takes a buffer, an offset and count as parameters
to the read() call. It makes a hypervisor call to read a specific
page from the catalog and copy the required bytes into the given
buffer. Each call to catalog_read() returns at most one 4K page.
Given these requirements, we should be able to simplify the
catalog_read().
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'Documentation/ABI')
0 files changed, 0 insertions, 0 deletions