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perf tools: Add mem2node object

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Adding mem2node object to allow the easy lookup of the node for the
physical address.

It has following interface:

  int  mem2node__init(struct mem2node *map, struct perf_env *env);
  void mem2node__exit(struct mem2node *map);
  int  mem2node__node(struct mem2node *map, u64 addr);

The mem2node__toolsinit initialize object from the perf data file
MEM_TOPOLOGY feature data. Following calls to mem2node__node will return
node number for given physical address. The mem2node__exit function
frees the object.

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180309101442.9224-3-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa
2018-03-09 11:14:35 +01:00
committed by Arnaldo Carvalho de Melo
parent e725920cdb
commit 4acf6142de
3 changed files with 154 additions and 0 deletions
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19
tools/perf/util/mem2node.h Normal file
View File

@@ -0,0 +1,19 @@
#ifndef __MEM2NODE_H
#define __MEM2NODE_H
#include <linux/rbtree.h>
#include "env.h"
struct phys_entry;
struct mem2node {
struct rb_root root;
struct phys_entry *entries;
int cnt;
};
int mem2node__init(struct mem2node *map, struct perf_env *env);
void mem2node__exit(struct mem2node *map);
int mem2node__node(struct mem2node *map, u64 addr);
#endif /* __MEM2NODE_H */