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9239612e-52df-42d6-ed2c-08dd51be3914 X-MS-Exchange-CrossTenant-AuthSource: CH3PR10MB7211.namprd10.prod.outlook.com X-MS-Exchange-CrossTenant-AuthAs: Internal X-MS-Exchange-CrossTenant-OriginalArrivalTime: 20 Feb 2025 14:52:40.4064 (UTC) X-MS-Exchange-CrossTenant-FromEntityHeader: Hosted X-MS-Exchange-CrossTenant-Id: 4e2c6054-71cb-48f1-bd6c-3a9705aca71b X-MS-Exchange-CrossTenant-MailboxType: HOSTED X-MS-Exchange-CrossTenant-UserPrincipalName: iA10BBmSxyuTsIdSz3AG/pFn3iVDXWzaarIF2k2X+UFHVCYAmzQMw3cI0mxa0+B50caN6oAv9oH2jKxRkB8bVg== X-MS-Exchange-Transport-CrossTenantHeadersStamped: DS7PR10MB5151 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1057,Hydra:6.0.680,FMLib:17.12.68.34 definitions=2025-02-20_06,2025-02-20_02,2024-11-22_01 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 mlxscore=0 adultscore=0 bulkscore=0 mlxlogscore=999 malwarescore=0 suspectscore=0 spamscore=0 phishscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2502100000 definitions=main-2502200106 X-Proofpoint-ORIG-GUID: GDhRUBHOnsaFEi3qRgLp5xXVKMLq2DES X-Proofpoint-GUID: GDhRUBHOnsaFEi3qRgLp5xXVKMLq2DES On 20-02-2025 01:15 pm, Shrikanth Hegde wrote: > > > On 2/19/25 12:16, Sinadin Shan wrote: >> The sched tests are missing a target entry and hence out-of-tree build >> support. >> >> For instance: >> make -C tools/testing/selftests install INSTALL_LOCATION=/foo/bar >> >> is expected to build the sched tests and place them at /foo/bar. >> But this is not observed since a TARGET entry is not present for sched. >> >> This was suggested by Shuah in this conversation >> Link: https://lore.kernel.org/linux-kselftest/60dd0240-8e45-4958- >> acf2-7eeee917785b@linuxfoundation.org/ >> >> Add support for sched selftests by adding sched as a default TARGET >> >> Signed-off-by: Sinadin Shan >> --- >>   tools/testing/selftests/Makefile | 1 + >>   1 file changed, 1 insertion(+) >> >> diff --git a/tools/testing/selftests/Makefile b/tools/testing/ >> selftests/Makefile >> index 8daac70c2f9d2..e2d0d389ad912 100644 >> --- a/tools/testing/selftests/Makefile >> +++ b/tools/testing/selftests/Makefile >> @@ -91,6 +91,7 @@ TARGETS += rlimits >>   TARGETS += rseq >>   TARGETS += rtc >>   TARGETS += rust >> +TARGETS += sched >>   TARGETS += sched_ext >>   TARGETS += seccomp >>   TARGETS += sgx > > There is only one test currently in sched: i.e cs_prctl_test.c. to see > the cookies validation when core scheduling is in effect. > > If CONFIG_SCHED_CORE=n, the test fails. So you might end up seeing > default selftests failing on such systems? or this is only compiling?> Yes, this patch would enable the test to be compiled and run by default. > Likely the selftests/sched needs to modified for CONFIG_SCHED_CORE=n Agree. Chris, I suppose then a graceful skip would be a more right option for kernels with core scheduling disabled? Regards, Shan > > When CONFIG_SCHED_CORE=n > ./cs_prctl_test > > ## Create a thread/process/process group hierarchy > Not a core sched system > ... > Not a core sched system > (283) FAILED: get_cs_cookie(0) == 0