The following commit has been merged into the perf/core branch of tip:

Commit-ID:     1ea770f6c1971bc101b3741f4d88b0b4ea5c4181
Gitweb:        
https://git.kernel.org/tip/1ea770f6c1971bc101b3741f4d88b0b4ea5c4181
Author:        Ravi Bangoria <[email protected]>
AuthorDate:    Thu, 22 Aug 2019 14:20:45 +05:30
Committer:     Arnaldo Carvalho de Melo <[email protected]>
CommitterDate: Thu, 22 Aug 2019 17:16:57 -03:00

perf c2c: Fix report with offline cpus

If c2c is recorded on a machine where any cpus are offline, 'perf c2c
report' throws an error "node/cpu topology bugFailed setup nodes".

It fails because while preparing node-cpu mapping we don't consider
offline cpus.

Reported-by: Nageswara R Sastry <[email protected]>
Signed-off-by: Ravi Bangoria <[email protected]>
Acked-by: Jiri Olsa <[email protected]>
Fixes: 1e181b92a2da ("perf c2c report: Add 'node' sort key")
Link: 
http://lkml.kernel.org/r/[email protected]
Signed-off-by: Arnaldo Carvalho de Melo <[email protected]>
---
 tools/perf/builtin-c2c.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c
index 01629f5..2111437 100644
--- a/tools/perf/builtin-c2c.c
+++ b/tools/perf/builtin-c2c.c
@@ -2027,7 +2027,7 @@ static int setup_nodes(struct perf_session *session)
                c2c.node_info = 2;
 
        c2c.nodes_cnt = session->header.env.nr_numa_nodes;
-       c2c.cpus_cnt  = session->header.env.nr_cpus_online;
+       c2c.cpus_cnt  = session->header.env.nr_cpus_avail;
 
        n = session->header.env.numa_nodes;
        if (!n)

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