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| author |   Julien Thierry <julien.thierry@arm.com> | 2019-01-31 14:58:47 +0000 |
|---|---|---|
| committer |   Catalin Marinas <catalin.marinas@arm.com> | 2019-02-06 10:05:18 +0000 |
| commit | a9806aa259feb2f6fd582b6342c835a3482fccc6 (patch) | |
| tree | 432ea57e608d7d2f0ecd0a477813f471c4f6a3eb /tools/perf/scripts/python/export-to-postgresql.py | |
| parent | arm64: Make PMR part of task context (diff) | |
| download | linux-dev-a9806aa259feb2f6fd582b6342c835a3482fccc6.tar.xz linux-dev-a9806aa259feb2f6fd582b6342c835a3482fccc6.zip | |
arm64: Unmask PMR before going idle
CPU does not received signals for interrupts with a priority masked by
ICC_PMR_EL1. This means the CPU might not come back from a WFI
instruction.
Make sure ICC_PMR_EL1 does not mask interrupts when doing a WFI.
Since the logic of cpu_do_idle is becoming a bit more complex than just
two instructions, lets turn it from ASM to C.
Signed-off-by: Julien Thierry <julien.thierry@arm.com>
Suggested-by: Daniel Thompson <daniel.thompson@linaro.org>
Reviewed-by: Catalin Marinas <catalin.marinas@arm.com>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'tools/perf/scripts/python/export-to-postgresql.py')
0 files changed, 0 insertions, 0 deletions