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authorSerge Semin <Sergey.Semin@baikalelectronics.ru>2020-05-21 17:07:23 +0300
committerThomas Bogendoerfer <tsbogend@alpha.franken.de>2020-05-22 09:14:06 +0200
commit3858642805973d194935c0641d8e825f9192d384 (patch)
treeea80ff7c5e2aaead101291fed2c45ae1a4b232c0 /arch/mips/loongson64
parented26aacfb5f71eecb20a51c4467da440cb719d66 (diff)
mips: csrc-r4k: Mark R4K timer as unstable if CPU freq changes
Commit 07d69579e7fe ("MIPS: Don't register r4k sched clock when CPUFREQ enabled") disabled the r4k-clock usage for scheduler ticks counting due to the scheduler being non-tolerant for unstable clocks sources. For the same reason the clock should be used in the system clocksource framework with care. As soon as CPU frequency changes the clocksource framework should be notified about this by marking the R4K timer being unstable (which it really is, since the ticks rate has been changed synchronously with the CPU frequency). Signed-off-by: Serge Semin <Sergey.Semin@baikalelectronics.ru> Cc: Alexey Malahov <Alexey.Malahov@baikalelectronics.ru> Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de> Cc: Paul Burton <paulburton@kernel.org> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Arnd Bergmann <arnd@arndb.de> Cc: Rob Herring <robh+dt@kernel.org> Cc: devicetree@vger.kernel.org Signed-off-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Diffstat (limited to 'arch/mips/loongson64')
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