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Thu, 29 Jan 2026 05:40:41 GMT Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 2D9A62004B; Thu, 29 Jan 2026 05:40:41 +0000 (GMT) Received: from smtpav05.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 6FA2E20040; Thu, 29 Jan 2026 05:40:36 +0000 (GMT) Received: from li-1cb9f04c-2ae1-11b2-a85c-a8a0a83790a8.in.ibm.com (unknown [9.109.207.131]) by smtpav05.fra02v.mail.ibm.com (Postfix) with ESMTP; Thu, 29 Jan 2026 05:40:36 +0000 (GMT) From: Saket Kumar Bhaskar To: linux-kernel@vger.kernel.org, linux-kselftest@vger.kernel.org, bpf@vger.kernel.org, linuxppc-dev@lists.ozlabs.org Cc: hbathini@linux.ibm.com, sachinpb@linux.ibm.com, venkat88@linux.ibm.com, andrii@kernel.org, eddyz87@gmail.com, ast@kernel.org, daniel@iogearbox.net, martin.lau@linux.dev, song@kernel.org, yonghong.song@linux.dev, john.fastabend@gmail.com, kpsingh@kernel.org, sdf@fomichev.me, haoluo@google.com, jolsa@kernel.org, christophe.leroy@csgroup.eu, maddy@linux.ibm.com, mpe@ellerman.id.au Subject: [PATCH] selftests/bpf: Add powerpc support for get_preempt_count() in selftest Date: Thu, 29 Jan 2026 11:10:35 +0530 Message-ID: <20260129054035.168078-1-skb99@linux.ibm.com> X-Mailer: git-send-email 2.52.0 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-GUID: M2I4GkjxJy-AGDoPCavxx97disodZo0l X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwMTI5MDAzMiBTYWx0ZWRfX5bTEF7fP8085 dzrpIqMm6HP59a8Z72Vflr0LfOeVAQXKE12qAMcZhpJnrEJP+QuObukkpvEmmH00W0Z5e1jetRM 3Ix1im9ThTvX3z089a3zX/tpV+Tzia39M6eoZwTQLjhhg94yxnrfh2puTuQsn47MlZJaU5pYunC lmHoMuE/IFzMoYV4qaYnuJ/UPreKZXg/KI8+tHasM1Vub46Obs8UvjwcKNAuwPJi71AyoURlCGM 843UzyY9QUV2L20RgTf41DHF5mgWn61izAURlqIqcnklOcG75LTMCVR+Chx3PMGpcRksCB2nNJr WsWLeeWDDr1sDnPLrSwY1j8VAVIpWsBf33n3jBnc+G/IOn8YadSjFjU3fyvyx/a1VkGMZXxnXIF FqVs017jwzi/zYC2PSco+u9+bbj3xwm8gedNoaxBpFlKFcFMnTIfQOPxyhQS2zJy1DTzpHzoBVU uPXIZQWvvQJGS4bXM9w== X-Authority-Analysis: v=2.4 cv=Zs3g6t7G c=1 sm=1 tr=0 ts=697af2de cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=vUbySO9Y5rIA:10 a=VkNPw1HP01LnGYTKEx00:22 a=VnNF1IyMAAAA:8 a=czdQH0r5uGu0LhivvR8A:9 X-Proofpoint-ORIG-GUID: SRhGOaJNVkvHQyGKJ9sjgKY7iDT_qv42 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.51,FMLib:17.12.100.49 definitions=2026-01-28_06,2026-01-28_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 lowpriorityscore=0 adultscore=0 phishscore=0 suspectscore=0 bulkscore=0 impostorscore=0 priorityscore=1501 malwarescore=0 spamscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2601150000 definitions=main-2601290032 Content-Type: text/plain; charset="utf-8" get_preempt_count() is enabled to return preempt_count for powerpc, so that bpf_in_interrupt()/get_preempt_count() works for powerpc as well. Signed-off-by: Saket Kumar Bhaskar Tested-by: Venkat Rao Bagalkote --- tools/testing/selftests/bpf/bpf_experimental.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/tools/testing/selftests/bpf/bpf_experimental.h b/tools/testing= /selftests/bpf/bpf_experimental.h index 2cd9165c7348..c3f039a878f3 100644 --- a/tools/testing/selftests/bpf/bpf_experimental.h +++ b/tools/testing/selftests/bpf/bpf_experimental.h @@ -630,6 +630,8 @@ static inline int get_preempt_count(void) return *(int *) bpf_this_cpu_ptr(&__preempt_count); #elif defined(bpf_target_arm64) return bpf_get_current_task_btf()->thread_info.preempt.count; +#elif defined(bpf_target_powerpc) + return bpf_get_current_task_btf()->thread_info.preempt_count; #endif return 0; } --=20 2.52.0