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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Mon, 9 Mar 2020 08:59:01 -0000 Received: from d06av23.portsmouth.uk.ibm.com (d06av23.portsmouth.uk.ibm.com [9.149.105.59]) by b06cxnps4074.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 0298x0L852232300 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Mon, 9 Mar 2020 08:59:00 GMT Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 5284AA4055; Mon, 9 Mar 2020 08:59:00 +0000 (GMT) Received: from d06av23.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id CE687A4040; Mon, 9 Mar 2020 08:58:57 +0000 (GMT) Received: from bangoria.in.ibm.com (unknown [9.124.31.44]) by d06av23.portsmouth.uk.ibm.com (Postfix) with ESMTP; Mon, 9 Mar 2020 08:58:57 +0000 (GMT) From: Ravi Bangoria To: mpe@ellerman.id.au, mikey@neuling.org Cc: apopple@linux.ibm.com, paulus@samba.org, npiggin@gmail.com, christophe.leroy@c-s.fr, naveen.n.rao@linux.vnet.ibm.com, peterz@infradead.org, jolsa@kernel.org, oleg@redhat.com, fweisbec@gmail.com, mingo@kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, Ravi Bangoria Subject: [PATCH 07/15] powerpc/watchpoint: Get watchpoint count dynamically while disabling them Date: Mon, 9 Mar 2020 14:27:58 +0530 X-Mailer: git-send-email 2.24.1 In-Reply-To: <20200309085806.155823-1-ravi.bangoria@linux.ibm.com> References: <20200309085806.155823-1-ravi.bangoria@linux.ibm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 x-cbid: 20030908-0008-0000-0000-0000035AA899 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 20030908-0009-0000-0000-00004A7BE79F Message-Id: <20200309085806.155823-8-ravi.bangoria@linux.ibm.com> X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138,18.0.572 definitions=2020-03-09_02:2020-03-06,2020-03-09 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 spamscore=0 malwarescore=0 lowpriorityscore=0 bulkscore=0 clxscore=1015 suspectscore=0 adultscore=0 impostorscore=0 mlxlogscore=864 phishscore=0 mlxscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2001150001 definitions=main-2003090066 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Instead of disabling only one watchpooint, get num of available watchpoints dynamically and disable all of them. Signed-off-by: Ravi Bangoria --- arch/powerpc/include/asm/hw_breakpoint.h | 15 +++++++-------- 1 file changed, 7 insertions(+), 8 deletions(-) diff --git a/arch/powerpc/include/asm/hw_breakpoint.h b/arch/powerpc/include/asm/hw_breakpoint.h index 980ac7d9f267..ec61e2b7195c 100644 --- a/arch/powerpc/include/asm/hw_breakpoint.h +++ b/arch/powerpc/include/asm/hw_breakpoint.h @@ -75,14 +75,13 @@ extern void ptrace_triggered(struct perf_event *bp, struct perf_sample_data *data, struct pt_regs *regs); static inline void hw_breakpoint_disable(void) { - struct arch_hw_breakpoint brk; - - brk.address = 0; - brk.type = 0; - brk.len = 0; - brk.hw_len = 0; - if (ppc_breakpoint_available()) - __set_breakpoint(&brk, 0); + int i; + struct arch_hw_breakpoint null_brk = {0}; + + if (ppc_breakpoint_available()) { + for (i = 0; i < nr_wp_slots(); i++) + __set_breakpoint(&null_brk, i); + } } extern void thread_change_pc(struct task_struct *tsk, struct pt_regs *regs); int hw_breakpoint_handler(struct die_args *args); -- 2.21.1