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Tue, 9 Dec 2025 12:17:02 +0000 (GMT) From: Heiko Carstens To: Alexander Gordeev , Sven Schnelle , Vasily Gorbik , Christian Borntraeger , Peter Zijlstra , Mark Rutland , Arnd Bergmann , Jens Remus , Stefan Schulze Frielinghaus , Juergen Christ Cc: linux-kernel@vger.kernel.org, linux-s390@vger.kernel.org Subject: [PATCH 7/9] s390/bug: Implement WARN_ONCE() Date: Tue, 9 Dec 2025 13:16:59 +0100 Message-ID: <20251209121701.1856271-8-hca@linux.ibm.com> X-Mailer: git-send-email 2.51.0 In-Reply-To: <20251209121701.1856271-1-hca@linux.ibm.com> References: <20251209121701.1856271-1-hca@linux.ibm.com> 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-Spam-Details-Enc: AW1haW4tMjUxMjA2MDAyMCBTYWx0ZWRfX7/bSsKL1Xx/k K6EPWhYqJx6kXcdAhy/K3No6tXbIGDyD8WX720VONDaecoMgTfc98n5i3Sqz8rIvItW3Dvv/yrP Vop1dd3OBYqL4xfX5N/lKDP4g56eOfF+NJceNFelAjd/o2xOEXI9OOgowKK7jlZuPNopHJVtYp2 2gqn1RzzWgUu8fpna7KG5uBiZafl3cCNWA2FSgqV476y9LZMkH1rQTLQMgImJL2x1dfw30gkq51 Yu2T8FdKUxo7+gT3NfWA5GtIYR2cELiahAC3CkUJc0mznH07Rcg9KfJN/RPobOg/yRujO/cYo1Y U3gKLAbd4Nd+/iXVx9WAUHaKkEMhg7+1+hsDvjQ1ewu9egVchwQ73+WvuXgNifSaWHyAXOKhLVR Ob0Ihuvfmc0kSpr3nwipmULFvO97/Q== X-Proofpoint-GUID: LFjeLZkUtCH5z27GGhCBu6JxWCYAAHzs X-Proofpoint-ORIG-GUID: LFjeLZkUtCH5z27GGhCBu6JxWCYAAHzs X-Authority-Analysis: v=2.4 cv=O/U0fR9W c=1 sm=1 tr=0 ts=69381344 cx=c_pps a=GFwsV6G8L6GxiO2Y/PsHdQ==:117 a=GFwsV6G8L6GxiO2Y/PsHdQ==:17 a=wP3pNCr1ah4A:10 a=VkNPw1HP01LnGYTKEx00:22 a=VnNF1IyMAAAA:8 a=t9L4_B14UcOybPqeXt4A:9 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1121,Hydra:6.1.9,FMLib:17.12.100.49 definitions=2025-12-09_02,2025-12-04_04,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 lowpriorityscore=0 bulkscore=0 clxscore=1015 phishscore=0 suspectscore=0 adultscore=0 spamscore=0 malwarescore=0 priorityscore=1501 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2510240000 definitions=main-2512060020 Content-Type: text/plain; charset="utf-8" This is the s390 variant of commit 11bb4944f014 ("x86/bug: Implement WARN_ONCE()"). Signed-off-by: Heiko Carstens --- arch/s390/include/asm/bug.h | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/arch/s390/include/asm/bug.h b/arch/s390/include/asm/bug.h index f3aca691bae2..e6e8b492c0e7 100644 --- a/arch/s390/include/asm/bug.h +++ b/arch/s390/include/asm/bug.h @@ -104,6 +104,17 @@ do { \ #define __WARN_printf(taint, fmt, arg...) \ __WARN_print_arg(BUGFLAG_TAINT(taint), fmt, ## arg) =20 +#define WARN_ONCE(cond, format, arg...) \ +({ \ + int __ret_warn_on =3D !!(cond); \ + \ + if (unlikely(__ret_warn_on)) { \ + __WARN_print_arg(BUGFLAG_ONCE|BUGFLAG_TAINT(TAINT_WARN),\ + format, ## arg); \ + } \ + __ret_warn_on; \ +}) + #define HAVE_ARCH_BUG #define HAVE_ARCH_BUG_FORMAT #define HAVE_ARCH_BUG_FORMAT_ARGS --=20 2.51.0