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Violators will be prosecuted; (version=TLSv1/SSLv3 cipher=AES256-GCM-SHA384 bits=256/256) Tue, 18 Jun 2019 15:47:46 +0100 Received: from d06av25.portsmouth.uk.ibm.com (d06av25.portsmouth.uk.ibm.com [9.149.105.61]) by b06cxnps4076.portsmouth.uk.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id x5IEljhm35455044 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 18 Jun 2019 14:47:45 GMT Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 5CACF11C04A; Tue, 18 Jun 2019 14:47:45 +0000 (GMT) Received: from d06av25.portsmouth.uk.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 7646611C052; Tue, 18 Jun 2019 14:47:43 +0000 (GMT) Received: from naverao1-tp.ibmuc.com (unknown [9.85.74.6]) by d06av25.portsmouth.uk.ibm.com (Postfix) with ESMTP; Tue, 18 Jun 2019 14:47:43 +0000 (GMT) From: "Naveen N. Rao" To: Michael Ellerman , Steven Rostedt , Masami Hiramatsu , Ingo Molnar , Nicholas Piggin Cc: , Subject: [PATCH 3/7] ftrace: Expose __ftrace_replace_code() Date: Tue, 18 Jun 2019 20:17:02 +0530 X-Mailer: git-send-email 2.22.0 In-Reply-To: References: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 x-cbid: 19061814-0020-0000-0000-0000034B28F1 X-IBM-AV-DETECTION: SAVI=unused REMOTE=unused XFE=unused x-cbparentid: 19061814-0021-0000-0000-0000219E777E Message-Id: X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2019-06-18_07:,, signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 priorityscore=1501 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 spamscore=0 clxscore=1011 lowpriorityscore=0 mlxscore=0 impostorscore=0 mlxlogscore=999 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1906180119 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org While over-riding ftrace_replace_code(), we still want to reuse the existing __ftrace_replace_code() function. Rename the function and make it available for other kernel code. Signed-off-by: Naveen N. Rao --- include/linux/ftrace.h | 1 + kernel/trace/ftrace.c | 8 ++++---- 2 files changed, 5 insertions(+), 4 deletions(-) diff --git a/include/linux/ftrace.h b/include/linux/ftrace.h index e97789c95c4e..fa653a561da5 100644 --- a/include/linux/ftrace.h +++ b/include/linux/ftrace.h @@ -456,6 +456,7 @@ ftrace_set_early_filter(struct ftrace_ops *ops, char *buf, int enable); /* defined in arch */ extern int ftrace_ip_converted(unsigned long ip); extern int ftrace_dyn_arch_init(void); +extern int ftrace_replace_code_rec(struct dyn_ftrace *rec, int enable); extern void ftrace_replace_code(int enable); extern int ftrace_update_ftrace_func(ftrace_func_t func); extern void ftrace_caller(void); diff --git a/kernel/trace/ftrace.c b/kernel/trace/ftrace.c index 5710a6b3edc1..21d8e201ee80 100644 --- a/kernel/trace/ftrace.c +++ b/kernel/trace/ftrace.c @@ -2351,8 +2351,8 @@ unsigned long ftrace_get_addr_curr(struct dyn_ftrace *rec) return (unsigned long)FTRACE_ADDR; } -static int -__ftrace_replace_code(struct dyn_ftrace *rec, int enable) +int +ftrace_replace_code_rec(struct dyn_ftrace *rec, int enable) { unsigned long ftrace_old_addr; unsigned long ftrace_addr; @@ -2403,7 +2403,7 @@ void __weak ftrace_replace_code(int mod_flags) if (rec->flags & FTRACE_FL_DISABLED) continue; - failed = __ftrace_replace_code(rec, enable); + failed = ftrace_replace_code_rec(rec, enable); if (failed) { ftrace_bug(failed, rec); /* Stop processing */ @@ -5827,7 +5827,7 @@ void ftrace_module_enable(struct module *mod) rec->flags = cnt; if (ftrace_start_up && cnt) { - int failed = __ftrace_replace_code(rec, 1); + int failed = ftrace_replace_code_rec(rec, 1); if (failed) { ftrace_bug(failed, rec); goto out_loop; -- 2.22.0