diff options
| author | Will Deacon <will.deacon@arm.com> | 2015-06-29 14:59:01 +0200 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2015-07-31 16:01:14 +0200 |
| commit | b6c084d7aa8bca21920cbbe13ad58572fa85ece6 (patch) | |
| tree | 5dfcdb11b45a7e62cb9d36810304973240c23b73 /drivers/perf | |
| parent | arm: perf: Set affinity for PPI based PMUs (diff) | |
| download | linux-b6c084d7aa8bca21920cbbe13ad58572fa85ece6.tar.xz linux-b6c084d7aa8bca21920cbbe13ad58572fa85ece6.zip | |
ARM: perf: extend interrupt-affinity property for PPIs
On systems containing multiple, heterogeneous clusters we need a way to
associate a PMU "device" with the CPU(s) on which it exists. For PMUs
that signal overflow with SPIs, this relationship is determined via the
"interrupt-affinity" property, which contains a list of phandles to CPU
nodes for the PMU. For PMUs using PPIs, the per-cpu nature of the
interrupt isn't enough to determine the set of CPUs which actually
contain the device.
This patch allows the interrupt-affinity property to be specified on a
PMU node irrespective of the interrupt type. For PPIs, it identifies
the set of CPUs signalling the PPI in question.
Tested-by: Stephen Boyd <sboyd@codeaurora.org> # Krait PMU
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'drivers/perf')
0 files changed, 0 insertions, 0 deletions