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authorVladimir Oltean <vladimir.oltean@nxp.com>2023-07-05 12:44:20 +0200
committerJakub Kicinski <kuba@kernel.org>2023-07-07 04:10:22 +0200
commit009d30f1a77795014f151ba317fcbfc2f17153c6 (patch)
tree457ca561c323ab36e13b4394bab66ad0e440621c /README
parentMerge tag 'nf-23-07-06' of git://git.kernel.org/pub/scm/linux/kernel/git/netf... (diff)
downloadlinux-009d30f1a77795014f151ba317fcbfc2f17153c6.tar.xz
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net: mscc: ocelot: extend ocelot->fwd_domain_lock to cover ocelot->tas_lock
In a future commit we will have to call vsc9959_tas_guard_bands_update() from ocelot_port_update_active_preemptible_tcs(), and that will be impossible due to the AB/BA locking dependencies between ocelot->tas_lock and ocelot->fwd_domain_lock. Just like we did in commit 3ff468ef987e ("net: mscc: ocelot: remove struct ocelot_mm_state :: lock"), the only solution is to expand the scope of ocelot->fwd_domain_lock for it to also serialize changes made to the Time-Aware Shaper, because those will have to result in a recalculation of cut-through TCs, which is something that depends on the forwarding domain. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Message-ID: <20230705104422.49025-2-vladimir.oltean@nxp.com> Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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