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    SubjectRe: [PATCH v2 5/5] ramoops: add max_reason optional field to ramoops DT node
    On Tue, May 05, 2020 at 11:45:10AM -0400, Pavel Tatashin wrote:
    > Currently, it is possible to dump kmsges for panic, or oops.
    > With max_reason it is possible to dump messages for other
    > kmesg_dump events, for example reboot, halt, shutdown, kexec.
    >
    > Signed-off-by: Pavel Tatashin <pasha.tatashin@soleen.com>
    > ---
    > .../devicetree/bindings/reserved-memory/ramoops.txt | 10 ++++++++--
    > 1 file changed, 8 insertions(+), 2 deletions(-)
    >
    > diff --git a/Documentation/devicetree/bindings/reserved-memory/ramoops.txt b/Documentation/devicetree/bindings/reserved-memory/ramoops.txt
    > index 0eba562fe5c6..886cff15d822 100644
    > --- a/Documentation/devicetree/bindings/reserved-memory/ramoops.txt
    > +++ b/Documentation/devicetree/bindings/reserved-memory/ramoops.txt
    > @@ -30,7 +30,7 @@ Optional properties:
    > - ecc-size: enables ECC support and specifies ECC buffer size in bytes
    > (defaults to 0: no ECC)
    >
    > -- record-size: maximum size in bytes of each dump done on oops/panic
    > +- record-size: maximum size in bytes of each kmsg dump.
    > (defaults to 0: disabled)
    >
    > - console-size: size in bytes of log buffer reserved for kernel messages
    > @@ -45,7 +45,13 @@ Optional properties:
    > - unbuffered: if present, use unbuffered mappings to map the reserved region
    > (defaults to buffered mappings)
    >
    > -- no-dump-oops: if present, only dump panics (defaults to panics and oops)
    > +- max_reason: maximum reason for kmsg dump. Defaults to 2 (dump oops and

    max-reason

    > + panics). Can be set to INT_MAX to dump for all reasons. See
    > + include/linux/kmsg_dump.h KMSG_DUMP_* for other kmsg dump values.
    > +
    > +- no-dump-oops: deprecated, use max_reason instead.
    > + if present, and max_reason is not specified is equivalent to
    > + max_reason = 1 (KMSG_DUMP_PANIC).
    >
    > - flags: if present, pass ramoops behavioral flags (defaults to 0,
    > see include/linux/pstore_ram.h RAMOOPS_FLAG_* for flag values).
    > --
    > 2.25.1
    >

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