powerpc/perf: Avoid FAB_*_MATCH checks for power9
Since power9 does not support FAB_*_MATCH bits in MMCR1,
avoid these checks for power9. For this, patch factor out
code in isa207_get_constraint() to retain these checks
only for power8.
Patch also updates the comment in power9-pmu raw event
encode layout to remove FAB_*_MATCH.
Finally for power9, patch adds additional check for
threshold events when adding the thresh mask and value in
isa207_get_constraint().
fixes: 7ffd948fae4c ('powerpc/perf: factor out power8 pmu functions')
fixes: 18201b204286 ('powerpc/perf: power9 raw event format encoding')
Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.vnet.ibm.com>
Signed-off-by: Madhavan Srinivasan <maddy@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
diff --git a/arch/powerpc/perf/power9-pmu.c b/arch/powerpc/perf/power9-pmu.c
index 5fe9cb1..7f65827 100644
--- a/arch/powerpc/perf/power9-pmu.c
+++ b/arch/powerpc/perf/power9-pmu.c
@@ -22,7 +22,7 @@
* | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - | - - - - |
* | | [ ] [ ] [ thresh_cmp ] [ thresh_ctl ]
* | | | | |
- * | | *- IFM (Linux) | thresh start/stop OR FAB match -*
+ * | | *- IFM (Linux) | thresh start/stop -*
* | *- BHRB (Linux) *sm
* *- EBB (Linux)
*
@@ -50,11 +50,9 @@
* MMCR1[31] = pmc4combine[1]
*
* if pmc == 3 and unit == 0 and pmcxsel[0:6] == 0b0101011
- * # PM_MRK_FAB_RSP_MATCH
- * MMCR1[20:27] = thresh_ctl (FAB_CRESP_MATCH / FAB_TYPE_MATCH)
+ * MMCR1[20:27] = thresh_ctl
* else if pmc == 4 and unit == 0xf and pmcxsel[0:6] == 0b0101001
- * # PM_MRK_FAB_RSP_MATCH_CYC
- * MMCR1[20:27] = thresh_ctl (FAB_CRESP_MATCH / FAB_TYPE_MATCH)
+ * MMCR1[20:27] = thresh_ctl
* else
* MMCRA[48:55] = thresh_ctl (THRESH START/END)
*