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| author | Florian Fainelli <f.fainelli@gmail.com> | 2017-11-30 19:10:11 -0500 |
|---|---|---|
| committer | Russell King <rmk+kernel@armlinux.org.uk> | 2017-12-17 17:15:37 -0500 |
| commit | 55de88778f4bfe6333db4e475afb15ef413b4874 (patch) | |
| tree | 0356ce4d899ff7e982754e551e24177e92b1694d /tools/perf/scripts/python/call-graph-from-sql.py | |
| parent | 1238c4fd4812e225c93bc4c152769afa8493f903 (diff) | |
ARM: 8726/1: B15: Add CPU hotplug awareness
The Broadcom Brahma-B15 readahead cache needs to be disabled,
respectively re-enable during a CPU hotplug. In case we were not to do,
CPU hotplug would occasionally fail with random crashes when a given CPU
exits the coherency domain while the RAC is still enabled, as it would
get stale data from the RAC.
In order to avoid adding any specific B15 readahead-cache awareness to
arch/arm/mach-bcm/hotplug-brcmstb.c we use a CPU hotplug state machine
which allows us to catch CPU hotplug events and disable/flush enable the
RAC accordingly.
Signed-off-by: Alamy Liu <alamyliu@broadcom.com>
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Diffstat (limited to 'tools/perf/scripts/python/call-graph-from-sql.py')
0 files changed, 0 insertions, 0 deletions