powerpc/watchpoint: Introduce function to get nr watchpoints dynamically

Browse source

So far we had only one watchpoint, so we have hardcoded HBP_NUM to 1.
But Power10 is introducing 2nd DAWR and thus kernel should be able to
dynamically find actual number of watchpoints supported by hw it's
running on. Introduce function for the same. Also convert HBP_NUM macro
to HBP_NUM_MAX, which will now represent maximum number of watchpoints
supported by Powerpc.

Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Michael Neuling <mikey@neuling.org>
Link: https://lore.kernel.org/r/20200514111741.97993-4-ravi.bangoria@linux.ibm.com

...

This commit is contained in:

Ravi Bangoria 2020-05-14 16:47:28 +05:30 • committed by Michael Ellerman

parent 4a4ec2289a

commit a6ba44e879

4 changed files with 12 additions and 3 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

6

arch/powerpc/include/asm/cputable.h

View file

5

arch/powerpc/include/asm/hw_breakpoint.h

View file

2

arch/powerpc/include/asm/processor.h

View file

2

arch/powerpc/kernel/hw_breakpoint.c

View file