From: Ravi Bangoria <ravi.bangoria@linux.ibm.com>

Date: Thu, 22 Aug 2019 14:20:45 +0530

Subject: perf c2c: Fix report with offline cpus

Git-commit: 1ea770f6c1971bc101b3741f4d88b0b4ea5c4181

Patch-mainline: v5.4-rc1

References: git-fixes

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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 <nasastry@in.ibm.com>

Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>

Acked-by: Jiri Olsa <jolsa@kernel.org>

Fixes: 1e181b92a2da ("perf c2c report: Add 'node' sort key")

Link: http://lkml.kernel.org/r/20190822085045.25108-1-ravi.bangoria@linux.ibm.com

Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>

Signed-off-by: Tony Jones <tonyj@suse.de>

---

 tools/perf/builtin-c2c.c | 2 +-

 1 file changed, 1 insertion(+), 1 deletion(-)

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diff --git a/tools/perf/builtin-c2c.c b/tools/perf/builtin-c2c.c

index 01629f5b6d1f..211143720078 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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