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arm64: process: Reduce the no. of bytes of data around registers

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As a part of __show_regs we print the 512 bytes of data around
key registers like SP, PC and LR. This data is not always useful
and can cause issue while we have more cores in the system and need
to print them per core during the stack traces triggered through
WARN(..) like APIs. It can also cause latency issues due to heavy
printing on the serial console.

Reduce the logging to 128 bytes (nbytes * 2) around these registers
from 512 bytes.

Change-Id: Ie19fececd9d2bc6cd3328a6c63c956bcc9eed9a6
Signed-off-by: Trilok Soni <tsoni@codeaurora.org>
This commit is contained in:
Trilok Soni 2016-09-20 14:55:35 -07:00
parent 4b91c1a0f7
commit 0d51ff8b45
1 changed files with 1 additions and 1 deletions
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2
arch/arm64/kernel/process.c
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@ -259,7 +259,7 @@ void __show_regs(struct pt_regs *regs)
printk("\n");
}
if (!user_mode(regs))
show_extra_register_data(regs, 256);
show_extra_register_data(regs, 64);
printk("\n");
}