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While it would be possible to add EXPORT_SYMBOL to the >>>> TTM functions, we don't want to do it with do_send_sig_info. >>>> >>>> Christian, two questions here: >>>> >>>> 1) Shall we export ttm_resource_alloc, ttm_tt_create and >>>> ttm_tt_destroy? Or is there a reason why they are "hidden"? >>> >>> Yeah, those are not supposed to be touched by drivers directly. >> >> Right, makes sense > > If you can't find a cleaner way exporting them conditionally on > CONFIG_DRM_TTM_KUNIT_TEST might be a way to go. In the end, I hacked TTM's Makefile to switch on CONFIG_DRM_TTM_KUNIT_TEST=m. I'm not sure if it's a clean approach, but thanks to that change I don't need to modify core TTM files. The only ifdef I had to add was the one for ttm_bo_reserve_interrupted subtest, but I think that's an acceptable compromise. Let's hope the kernel test bot agrees :) Will send the series soon. I'm still sorting things out after coming from a sick leave. All the best, Karolina > >> >>> >>>> >>>> 2) If we decide to keep ttm_bo_reserve_interrupted subtest as it is, >>>> should I make CONFIG_DRM_TTM_KUNIT_TEST a boolean, instead of a >>>> tristate? DRM KUnit tests are tristate, but I think they don't use >>>> non-exported functions. >>> >>> Another option would be to build them together with TTM into one >>> module, but I'm not sure if the KUNIT tests can do this. >> >> While I can imagine doing it with TTM, I'm not so sure about coupling >> it with signal.o. Still, I'll take a look. > > I have a high level understanding what you are trying to to, but that is > absolutely not my field of expertise :) > > Regards, > Christian. > >> >> All the best, >> Karolina >> >>> >>> Regards, >>> Christian. >>> >>>> >>>> Many thanks, >>>> Karolina >>>> >>>>> >>>>> [auto build test ERROR on drm-misc/drm-misc-next] >>>>> [also build test ERROR on drm/drm-next drm-exynos/exynos-drm-next >>>>> drm-intel/for-linux-next drm-tip/drm-tip linus/master next-20230831] >>>>> [cannot apply to drm-intel/for-linux-next-fixes v6.5] >>>>> [If your patch is applied to the wrong git tree, kindly drop us a >>>>> note. >>>>> And when submitting patch, we suggest to use '--base' as documented in >>>>> https://git-scm.com/docs/git-format-patch#_base_tree_information] >>>>> >>>>> url: >>>>> https://github.com/intel-lab-lkp/linux/commits/Karolina-Stolarek/drm-ttm-tests-Add-tests-for-ttm_resource-and-ttm_sys_man/20230831-185954 >>>>> base:   git://anongit.freedesktop.org/drm/drm-misc drm-misc-next >>>>> patch link: >>>>> https://lore.kernel.org/r/d914169aee773ee20c0b730b38d42a1fd7613bb6.1693479161.git.karolina.stolarek%40intel.com >>>>> patch subject: [PATCH 3/3] drm/ttm/tests: Add tests for ttm_bo >>>>> functions >>>>> config: openrisc-allmodconfig >>>>> (https://download.01.org/0day-ci/archive/20230901/202309011935.bBpezbUQ-lkp@intel.com/config) >>>>> compiler: or1k-linux-gcc (GCC) 13.2.0 >>>>> reproduce (this is a W=1 build): >>>>> (https://download.01.org/0day-ci/archive/20230901/202309011935.bBpezbUQ-lkp@intel.com/reproduce) >>>>> >>>>> If you fix the issue in a separate patch/commit (i.e. not just a >>>>> new version of >>>>> the same patch/commit), kindly add following tags >>>>> | Reported-by: kernel test robot >>>>> | Closes: >>>>> https://lore.kernel.org/oe-kbuild-all/202309011935.bBpezbUQ-lkp@intel.com/ >>>>> >>>>> All errors (new ones prefixed by >>, old ones prefixed by <<): >>>>> >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/netfilter/ipvs/ip_vs_wlc.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/netfilter/ipvs/ip_vs_fo.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/netfilter/ipvs/ip_vs_ovf.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/netfilter/ipvs/ip_vs_lblc.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/netfilter/ipvs/ip_vs_lblcr.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/netfilter/ipvs/ip_vs_dh.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/netfilter/ipvs/ip_vs_sh.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/netfilter/ipvs/ip_vs_sed.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/netfilter/ipvs/ip_vs_nq.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/netfilter/ipvs/ip_vs_twos.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/netfilter/ipvs/ip_vs_ftp.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/netfilter/ipvs/ip_vs_pe_sip.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/ipv4/netfilter/nf_defrag_ipv4.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/ipv4/netfilter/nf_reject_ipv4.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/ipv4/netfilter/iptable_nat.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/ipv4/netfilter/iptable_raw.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/ipv4/ip_tunnel.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/ipv4/ipip.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/ipv4/ip_gre.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/ipv4/udp_tunnel.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/ipv4/ip_vti.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/ipv4/ah4.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/ipv4/esp4.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/ipv4/xfrm4_tunnel.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/ipv4/tunnel4.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/ipv4/inet_diag.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/ipv4/tcp_diag.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/ipv4/udp_diag.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/ipv4/raw_diag.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/xfrm/xfrm_algo.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/xfrm/xfrm_user.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/unix/unix_diag.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/ipv6/netfilter/ip6table_raw.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/ipv6/netfilter/ip6table_nat.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/ipv6/netfilter/nf_defrag_ipv6.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/ipv6/netfilter/nf_reject_ipv6.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/ipv6/ah6.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/ipv6/esp6.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/ipv6/xfrm6_tunnel.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/ipv6/tunnel6.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/ipv6/mip6.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/ipv6/sit.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/ipv6/ip6_udp_tunnel.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/dsa/tag_ar9331.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/dsa/tag_brcm.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/dsa/tag_dsa.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/dsa/tag_gswip.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/dsa/tag_hellcreek.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/dsa/tag_ksz.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/dsa/tag_lan9303.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/dsa/tag_mtk.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/dsa/tag_none.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/dsa/tag_ocelot.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/dsa/tag_ocelot_8021q.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/dsa/tag_qca.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/dsa/tag_rtl4_a.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/dsa/tag_rtl8_4.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/dsa/tag_rzn1_a5psw.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/dsa/tag_sja1105.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/dsa/tag_trailer.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/dsa/tag_xrs700x.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/8021q/8021q.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/xdp/xsk_diag.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/mptcp/mptcp_diag.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/mptcp/mptcp_crypto_test.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/mptcp/mptcp_token_test.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/packet/af_packet.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/packet/af_packet_diag.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/key/af_key.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/bridge/netfilter/nf_conntrack_bridge.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/bridge/netfilter/ebtables.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/bridge/netfilter/ebtable_broute.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/bridge/netfilter/ebtable_filter.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/bridge/netfilter/ebtable_nat.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/bridge/bridge.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/sunrpc/sunrpc.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/sunrpc/auth_gss/auth_rpcgss.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/sunrpc/auth_gss/rpcsec_gss_krb5.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/kcm/kcm.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/atm/atm.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/atm/lec.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/atm/mpoa.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/sctp/sctp_diag.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/tipc/diag.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/smc/smc_diag.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/caif/caif.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/caif/chnl_net.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/caif/caif_socket.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/caif/caif_usb.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/6lowpan/6lowpan.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/ieee802154/6lowpan/ieee802154_6lowpan.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/ieee802154/ieee802154_socket.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/nfc/nci/nci.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/nfc/nci/nci_spi.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/nfc/nfc_digital.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in >>>>> net/vmw_vsock/vsock_diag.o >>>>> WARNING: modpost: missing MODULE_DESCRIPTION() in net/hsr/hsr.o >>>>> ERROR: modpost: "ttm_resource_alloc" >>>>> [drivers/gpu/drm/ttm/tests/ttm_resource_test.ko] undefined! >>>>> ERROR: modpost: "ttm_tt_create" >>>>> [drivers/gpu/drm/ttm/tests/ttm_tt_test.ko] undefined! >>>>> ERROR: modpost: "ttm_tt_destroy" >>>>> [drivers/gpu/drm/ttm/tests/ttm_tt_test.ko] undefined! >>>>>>> ERROR: modpost: "ttm_resource_alloc" >>>>>>> [drivers/gpu/drm/ttm/tests/ttm_bo_test.ko] undefined! >>>>>>> ERROR: modpost: "ttm_tt_create" >>>>>>> [drivers/gpu/drm/ttm/tests/ttm_bo_test.ko] undefined! >>>>>>> ERROR: modpost: "do_send_sig_info" >>>>>>> [drivers/gpu/drm/ttm/tests/ttm_bo_test.ko] undefined! >>>>> >>> >