Commit cb1c4aba authored by Kajol Jain's avatar Kajol Jain Committed by Michael Ellerman
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perf: Add new macros for mem_hops field 



Add new macros for mem_hops field which can be used to
represent remote-node, socket and board level details.

Currently the code had macro for HOPS_0, which corresponds
to data coming from another core but same node.
Add new macros for HOPS_1 to HOPS_3 to represent
remote-node, socket and board level data.

For ex: Encodings for mem_hops fields with L2 cache:

L2			- local L2
L2 | REMOTE | HOPS_0	- remote core, same node L2
L2 | REMOTE | HOPS_1	- remote node, same socket L2
L2 | REMOTE | HOPS_2	- remote socket, same board L2
L2 | REMOTE | HOPS_3	- remote board L2

Signed-off-by: default avatarKajol Jain <kjain@linux.ibm.com>
Acked-by: default avatarPeter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: default avatarMichael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20211206091749.87585-2-kjain@linux.ibm.com
parent 708da3ff

include/uapi/linux/perf_event.h

+4 −1
Original line number Original line Diff line number Diff line
@@ -1332,7 +1332,10 @@ union perf_mem_data_src { 




/* hop level */

/* hop level */

#define PERF_MEM_HOPS_0		0x01 /* remote core, same node */

#define PERF_MEM_HOPS_0		0x01 /* remote core, same node */

/* 2-7 available */

#define PERF_MEM_HOPS_1		0x02 /* remote node, same socket */

#define PERF_MEM_HOPS_2		0x03 /* remote socket, same board */

#define PERF_MEM_HOPS_3		0x04 /* remote board */

/* 5-7 available */

#define PERF_MEM_HOPS_SHIFT	43

#define PERF_MEM_HOPS_SHIFT	43





#define PERF_MEM_S(a, s) \

#define PERF_MEM_S(a, s) \