tile kgdb: fix bug in copy to gdb regs, and optimize memset

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David Binderman pointed out that we were doing a full memset()
of the gdb register buffer and then doing a memcpy() to it that
was almost as big.  This commit optimizes that by only doing a
memset() of the registers that are intended to be zero.

While making this change I noticed that we were not copying the
link register (LR, number 55) due to a fencepost error in commit
f419e6f63c ("arch: tile: kernel: kgdb.c: Use memcpy() instead of
pointer copy one by one"), and I've corrected that as well.

Reported-by: David Binderman <dcb314@hotmail.com>
Signed-off-by: Chris Metcalf <cmetcalf@ezchip.com>

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This commit is contained in:

Chris Metcalf 2016-01-25 15:05:34 -05:00

parent 81f70ba233

commit 77ef8f5177

1 changed files with 4 additions and 4 deletions

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arch/tile/kernel/kgdb.c

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