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3d62f95bd8
There is no page fault without MMU. Compiling the rtapp/pagefault monitor
without CONFIG_MMU fails as page fault tracepoints' definitions are not
available.
Make rtapp/pagefault monitor depends on CONFIG_MMU.
Fixes: 9162620eb6 ("rv: Add rtapp_pagefault monitor")
Signed-off-by: Nam Cao <namcao@linutronix.de>
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202509260455.6Z9Vkty4-lkp@intel.com/
Cc: stable@vger.kernel.org
Reviewed-by: Gabriele Monaco <gmonaco@redhat.com>
Link: https://lore.kernel.org/r/20251002082317.973839-1-namcao@linutronix.de
Signed-off-by: Gabriele Monaco <gmonaco@redhat.com>
22 lines
624 B
Plaintext
22 lines
624 B
Plaintext
# SPDX-License-Identifier: GPL-2.0-only
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#
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config RV_MON_PAGEFAULT
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depends on RV
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select RV_LTL_MONITOR
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depends on RV_MON_RTAPP
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depends on X86 || RISCV
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depends on MMU
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default y
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select LTL_MON_EVENTS_ID
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bool "pagefault monitor"
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help
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Monitor that real-time tasks do not raise page faults, causing
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undesirable latency.
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If you are developing a real-time system and not entirely sure whether
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the applications are designed correctly for real-time, you want to say
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Y here.
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This monitor does not affect execution speed while it is not running,
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therefore it is safe to enable this in production kernel.
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