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| author | Anshuman Khandual <anshuman.khandual@arm.com> | 2021-04-29 22:55:15 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-04-30 11:20:36 -0700 |
| commit | dce44566192ec0b38597fdfd435013c2d54653ff (patch) | |
| tree | 05ff6c565da78e8ebe8d333b9b80793c322b02e2 /lib | |
| parent | f58bd538e6a2deb2bcdfe527d9ed45643348a4e6 (diff) | |
| download | linux-dce44566192ec0b38597fdfd435013c2d54653ff.tar.gz linux-dce44566192ec0b38597fdfd435013c2d54653ff.tar.xz | |
mm/memtest: add ARCH_USE_MEMTEST
early_memtest() does not get called from all architectures. Hence
enabling CONFIG_MEMTEST and providing a valid memtest=[1..N] kernel
command line option might not trigger the memory pattern tests as would be
expected in normal circumstances. This situation is misleading.
The change here prevents the above mentioned problem after introducing a
new config option ARCH_USE_MEMTEST that should be subscribed on platforms
that call early_memtest(), in order to enable the config CONFIG_MEMTEST.
Conversely CONFIG_MEMTEST cannot be enabled on platforms where it would
not be tested anyway.
Link: https://lkml.kernel.org/r/1617269193-22294-1-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Anshuman Khandual <anshuman.khandual@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com> (arm64)
Reviewed-by: Max Filippov <jcmvbkbc@gmail.com>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Will Deacon <will@kernel.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Chris Zankel <chris@zankel.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'lib')
| -rw-r--r-- | lib/Kconfig.debug | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/lib/Kconfig.debug b/lib/Kconfig.debug index b38bbb5bb00e..678c13967580 100644 --- a/lib/Kconfig.debug +++ b/lib/Kconfig.debug @@ -2573,11 +2573,18 @@ config TEST_FPU endif # RUNTIME_TESTING_MENU +config ARCH_USE_MEMTEST + bool + help + An architecture should select this when it uses early_memtest() + during boot process. + config MEMTEST bool "Memtest" + depends on ARCH_USE_MEMTEST help This option adds a kernel parameter 'memtest', which allows memtest - to be set. + to be set and executed. memtest=0, mean disabled; -- default memtest=1, mean do 1 test pattern; ... |