Re: [PATCH V2 0/2] Fix session topology test for powerpc and add utility function to get cpuinfo entries

[Disha Goel <disgoel@linux.vnet.ibm.com>]

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-----Original Message-----
From: Athira Rajeev <atrajeev@linux.vnet.ibm.com>
To: acme@kernel.org, jolsa@kernel.org, disgoel@linux.vnet.ibm.com
Cc: mpe@ellerman.id.au, linux-perf-users@vger.kernel.org, 
linuxppc-dev@lists.ozlabs.org, maddy@linux.vnet.ibm.com, 
rnsastry@linux.ibm.com, kjain@linux.ibm.com, irogers@google.com
Subject: [PATCH V2 0/2]  Fix session topology test for powerpc and add
utility function to get cpuinfo entries
Date: Thu,  5 May 2022 15:09:58 +0530

The session topology test fails in powerpc pSeries platform.Test
logs:<<>>Session topology : FAILED!<<>>
This test uses cpu topology information and in powerpc,some of the
topology info is restricted in environmentlike virtualized platform.
Hence this test needs to beskipped in pSeries platform for powerpc. The
informationabout platform is available in /proc/cpuinfo.
Patch 1 adds generic utility function in "util/header.c"to read
/proc/cpuinfo for any entry. Though the testcasefix needs value from
"platform" entry, making this as ageneric function to return value for
any entry from the/proc/cpuinfo file which can be used commonly in
futureusecases.
Patch 2 uses the newly added utility function to look forplatform and
skip the test in pSeries platform for powerpc.
Athira Rajeev (2):  tools/perf: Add utility function to read
/proc/cpuinfo for any field  tools/perf/tests: Fix session topology
test to skip the test in guest    environment
Changelog: V1 -> v2: Addressed review comments from Kajol. Use "strim"
to remove space from string. Also use "feof" to check for EOF instead
of using new variable "ret".
Tested the patches on powervm and powernv, verified perf test session
topology test with the patch set.Tested-by: Disha Goel <
disgoel@linux.vnet.ibm.com>
 tools/perf/tests/topology.c | 17 ++++++++++++
tools/perf/util/header.c    | 53 +++++++++++++++++++++++++++++++++++++
tools/perf/util/header.h    |  1 + 3 files changed, 71 insertions(+)

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