Fix Sandy Bridge+ hwpmc branch counters

On Sandy Bridge and later, to count branch-related events you
have to or together a mask indicating the type of branch
instruction to count (e.g. direct jump, branch, etc) and a bits
indicating whether to count taken and not-taken branches.  The
current counter definitions where defining this bits individually,
so the counters never worked and always just counted 0.

Fix the counter definitions to instead contain the proper
combination of masks.  Also update the man pages to reflect the
new counters.

Differential Revision:	https://reviews.freebsd.org/D1587
MFC after:	1 month
Sponsored by:	Sandvine Inc.

1 files changed, 33 insertions, 53 deletions

diff --git a/lib/libpmc/pmc.ivybridgexeon.3 b/lib/libpmc/pmc.ivybridgexeon.3
index 31a4caa..4fe2a4e 100644
--- a/lib/libpmc/pmc.ivybridgexeon.3
+++ b/lib/libpmc/pmc.ivybridgexeon.3
@@ -449,80 +449,60 @@ Stalls caused by changing prefix length of the instruction.
 .It Li ILD_STALL.IQ_FULL
 .Pq Event 87H , Umask 04H
 Stall cycles due to IQ is full.
-.It Li BR_INST_EXEC.COND
-.Pq Event 88H , Umask 01H
-Qualify conditional near branch instructions executed, but not necessarily
-retired.
-Must combine with umask 40H, 80H.
+.It Li BR_INST_EXEC.NONTAKEN_COND
+.Pq Event 88H , Umask 41H
+Count conditional near branch instructions that were executed (but not
+necessarily retired) and not taken.
+.It Li BR_INST_EXEC.TAKEN_COND
+.Pq Event 88H , Umask 81H
+Count conditional near branch instructions that were executed (but not
+necessarily retired) and taken.
 .It Li BR_INST_EXEC.DIRECT_JMP
-.Pq Event 88H , Umask 02H
-Qualify all unconditional near branch instructions excluding calls and
+.Pq Event 88H , Umask 82H
+Count all unconditional near branch instructions excluding calls and
 indirect branches.
-Must combine with umask 80H.
 .It Li BR_INST_EXEC.INDIRECT_JMP_NON_CALL_RET
-.Pq Event 88H , Umask 04H
-Qualify executed indirect near branch instructions that are not calls nor
+.Pq Event 88H , Umask 84H
+Count executed indirect near branch instructions that are not calls nor
 returns.
-Must combine with umask 80H.
 .It Li BR_INST_EXEC.RETURN_NEAR
-.Pq Event 88H , Umask 08H
-Qualify indirect near branches that have a return mnemonic.
-Must combine with umask 80H.
+.Pq Event 88H , Umask 88H
+Count indirect near branches that have a return mnemonic.
 .It Li BR_INST_EXEC.DIRECT_NEAR_CALL
-.Pq Event 88H , Umask 10H
-Qualify unconditional near call branch instructions, excluding non call
+.Pq Event 88H , Umask 90H
+Count unconditional near call branch instructions, excluding non call
 branch, executed.
-Must combine with umask 80H.
 .It Li BR_INST_EXEC.INDIRECT_NEAR_CALL
-.Pq Event 88H , Umask 20H
-Qualify indirect near calls, including both register and memory indirect,
+.Pq Event 88H , Umask A0H
+Count indirect near calls, including both register and memory indirect,
 executed.
-Must combine with umask 80H.
-.It Li BR_INST_EXEC.NONTAKEN
-.Pq Event 88H , Umask 40H
-Qualify non-taken near branches executed.
-Applicable to umask 01H only.
-.It Li BR_INST_EXEC.TAKEN
-.Pq Event 88H , Umask 80H
-Qualify taken near branches executed. Must combine with 01H,02H, 04H, 08H,
-10H, 20H.
 .It Li BR_INST_EXEC.ALL_BRANCHES
 .Pq Event 88H , Umask FFH
 Counts all near executed branches (not necessarily retired).
-.It Li BR_MISP_EXEC.COND
-.Pq Event 89H , Umask 01H
-Qualify conditional near branch instructions mispredicted.
-Must combine with umask 40H, 80H.
+.It Li BR_MISP_EXEC.NONTAKEN_COND
+.Pq Event 89H , Umask 41H
+Count conditional near branch instructions mispredicted as nontaken.
+.It Li BR_MISP_EXEC.TAKEN_COND
+.Pq Event 89H , Umask 81H
+Count conditional near branch instructions mispredicted as taken.
 .It Li BR_MISP_EXEC.INDIRECT_JMP_NON_CALL_RET
-.Pq Event 89H , Umask 04H
-Qualify mispredicted indirect near branch instructions that are not calls
+.Pq Event 89H , Umask 84H
+Count mispredicted indirect near branch instructions that are not calls
 nor returns.
-Must combine with umask 80H.
 .It Li BR_MISP_EXEC.RETURN_NEAR
-.Pq Event 89H , Umask 08H
-Qualify mispredicted indirect near branches that have a return mnemonic.
-Must combine with umask 80H.
+.Pq Event 89H , Umask 88H
+Count mispredicted indirect near branches that have a return mnemonic.
 .It Li BR_MISP_EXEC.DIRECT_NEAR_CALL
-.Pq Event 89H , Umask 10H
-Qualify mispredicted unconditional near call branch instructions, excluding
+.Pq Event 89H , Umask 90H
+Count mispredicted unconditional near call branch instructions, excluding
 non call branch, executed.
-Must combine with umask 80H.
 .It Li BR_MISP_EXEC.INDIRECT_NEAR_CALL
-.Pq Event 89H , Umask 20H
-Qualify mispredicted indirect near calls, including both register and memory
+.Pq Event 89H , Umask A0H
+Count mispredicted indirect near calls, including both register and memory
 indirect, executed.
-Must combine with umask 80H.
-.It Li BR_MISP_EXEC.NONTAKEN
-.Pq Event 89H , Umask 40H
-Qualify mispredicted non-taken near branches executed.
-Applicable to umask 01H only.
-.It Li BR_MISP_EXEC.TAKEN
-.Pq Event 89H , Umask 80H
-Qualify mispredicted taken near branches executed. Must combine with
-01H,02H, 04H, 08H, 10H, 20H.
 .It Li BR_MISP_EXEC.ALL_BRANCHES
 .Pq Event 89H , Umask FFH
-Counts all near executed branches (not necessarily retired).
+Counts all mispredicted near executed branches (not necessarily retired).
 .It Li IDQ_UOPS_NOT_DELIVERED.CORE
 .Pq Event 9CH , Umask 01H
 Count number of non-delivered uops to RAT per thread.