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Add Minidump support for clients to get minimum required data
at the time of system crash. The Minidump table resides in SMEM,
BOOT(SBL) will iterate the table entries and dumps out (to USB/Flash)
the data in address location.
Any client can register to this table with static or known addresses,
as currently Minidump doesn't support dumping of dynamic data structures.
To simplify post processing, we create an ELF header, where each entry in
the minidump table is a section in elf header.
If Memory dump table enabled, Dump all data entries registered with MDT.
Enable Minidump:
echo mini > /sys/kernel/dload/dload_mode
Change-Id: I0fc8d21aef71ded34a498426ee3d7f86b063a639
Signed-off-by: Lingutla Chandrasekhar <clingutla@codeaurora.org>
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Record counter timestamp in every RTB log record to help
correlate these events with other subsystem events which
occur outside of cpu subsystem.
Change-Id: Ib1291524c53c4ec757a494a1e08cb0925720e1a6
Signed-off-by: Srinivas Ramana <sramana@codeaurora.org>
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As the priority of RTB panic notifier was zero, it was
not guaranteed to disable RTB right after kernel panic.
So RTB log buffer could be flooded with some I/O operations
after panic. By setting the priority of RTB panic notifier
to the highest value, make sure RTB is disabled right after
a kernel panic.
Change-Id: If9efc2ec31efa6aa17e92b2b01e81ab4df6d1730
Signed-off-by: Se Wang (Patrick) Oh <sewango@codeaurora.org>
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RTB logging currently doesn't log the time
at which the logging was done. This can be
useful to compare with dmesg during debug.
The bytes for timestamp are taken by reducing
the sentinel array size to three from eleven
thus giving the extra 8 bytes to store time.
This maintains the size of the layout at 32.
Change-Id: Ifc7e4d2e89ed14d2a97467891ebefa9515983630
Signed-off-by: Vignesh Radhakrishnan <vigneshr@codeaurora.org>
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This snapshot is taken as of msm-3.10 commit:
78c36fa0ef (Merge "msm: mdss: Prevent backlight update during
continuous splash")
RTB support captures system events such as register writes to a
small uncached region. This is designed to aid in debugging, where
it may be useful to know the last events that occurred prior to a
device reset.
Change-Id: Idc51e618380f58a6803f40c47f2b3d29033b3196
Signed-off-by: Matt Wagantall <mattw@codeaurora.org>
[spjoshi@codeaurora.org: fix merge conflict]
Signed-off-by: Sarangdhar Joshi <spjoshi@codeaurora.org>
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