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| author | Serge Semin <Sergey.Semin@baikalelectronics.ru> | 2020-05-21 17:07:23 +0300 |
|---|---|---|
| committer | Thomas Bogendoerfer <tsbogend@alpha.franken.de> | 2020-05-22 10:14:06 +0300 |
| commit | 3858642805973d194935c0641d8e825f9192d384 (patch) | |
| tree | ea80ff7c5e2aaead101291fed2c45ae1a4b232c0 /arch/mips/Kconfig | |
| parent | ed26aacfb5f71eecb20a51c4467da440cb719d66 (diff) | |
| download | linux-3858642805973d194935c0641d8e825f9192d384.tar.xz | |
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/Kconfig')
| -rw-r--r-- | arch/mips/Kconfig | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 2747b1b2d435..f347312ecd74 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -1108,6 +1108,7 @@ config CSRC_IOASIC bool config CSRC_R4K + select CLOCKSOURCE_WATCHDOG if CPU_FREQ bool config CSRC_SB1250 |