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| author |   Ravi Bangoria <ravi.bangoria@linux.ibm.com> | 2020-05-14 16:47:28 +0530 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2020-05-19 00:11:04 +1000 |
| commit | a6ba44e8799230e36c8ab06fda7f77f421e9e795 (patch) | |
| tree | 9a10225ec0733461728d72fb75953550610c25b2 /arch/powerpc/kernel/hw_breakpoint.c | |
| parent | powerpc/watchpoint: Add SPRN macros for second DAWR (diff) | |
| download | linux-dev-a6ba44e8799230e36c8ab06fda7f77f421e9e795.tar.xz linux-dev-a6ba44e8799230e36c8ab06fda7f77f421e9e795.zip | |
powerpc/watchpoint: Introduce function to get nr watchpoints dynamically
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
Diffstat (limited to 'arch/powerpc/kernel/hw_breakpoint.c')
| -rw-r--r-- | arch/powerpc/kernel/hw_breakpoint.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/kernel/hw_breakpoint.c b/arch/powerpc/kernel/hw_breakpoint.c index 423603c92c0f..01f07d91df70 100644 --- a/arch/powerpc/kernel/hw_breakpoint.c +++ b/arch/powerpc/kernel/hw_breakpoint.c @@ -39,7 +39,7 @@ static DEFINE_PER_CPU(struct perf_event *, bp_per_reg); int hw_breakpoint_slots(int type) { if (type == TYPE_DATA) - return HBP_NUM; + return nr_wp_slots(); return 0; /* no instruction breakpoints available */ } |