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| author | Marek Szyprowski <m.szyprowski@samsung.com> | 2020-06-29 13:02:18 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2020-08-19 09:15:55 +0300 |
| commit | 0155cd348be2c3ea83faea0dd722cb94aa378e36 (patch) | |
| tree | 893bccc80102045509dbed914bae30c775da1e68 /samples/bpf/syscall_tp_kern.c | |
| parent | 489ee1f219932aa08a170fb76546cb3b65b9e2b9 (diff) | |
| download | linux-0155cd348be2c3ea83faea0dd722cb94aa378e36.tar.xz | |
ARM: exynos: MCPM: Restore big.LITTLE cpuidle support
[ Upstream commit ea9dd8f61c8a890843f68e8dc0062ce78365aab8 ]
Call exynos_cpu_power_up(cpunr) unconditionally. This is needed by the
big.LITTLE cpuidle driver and has no side-effects on other code paths.
The additional soft-reset call during little core power up has been added
to properly boot all cores on the Exynos5422-based boards with secure
firmware (like Odroid XU3/XU4 family). This however broke big.LITTLE
CPUidle driver, which worked only on boards without secure firmware (like
Peach-Pit/Pi Chromebooks). Apply the workaround only when board is
running under secure firmware.
Fixes: 833b5794e330 ("ARM: EXYNOS: reset Little cores when cpu is up")
Signed-off-by: Marek Szyprowski <m.szyprowski@samsung.com>
Reviewed-by: Lukasz Luba <lukasz.luba@arm.com>
Signed-off-by: Krzysztof Kozlowski <krzk@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'samples/bpf/syscall_tp_kern.c')
0 files changed, 0 insertions, 0 deletions