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Mon, 2 Jun 2025 21:41:56 +0000 (GMT) From: Ilya Leoshkevich To: Steven Rostedt Cc: linux-trace-devel@vger.kernel.org, Heiko Carstens , Vasily Gorbik , Alexander Gordeev , Ilya Leoshkevich Subject: [PATCH v2 0/2] libtracecmd: Support changing /proc/kallsyms Date: Mon, 2 Jun 2025 22:38:31 +0100 Message-ID: <20250602214154.446881-1-iii@linux.ibm.com> X-Mailer: git-send-email 2.49.0 Precedence: bulk X-Mailing-List: linux-trace-devel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjUwNjAyMDE3OCBTYWx0ZWRfX2E0JfqqOa6rU +YuvUg6U31CHr3VR2GehTm3UOL/BaWAIXmwxgqctNH/XRH20U0pdAK2mQmhv/OwV6UD2/IiyiFx AQo1U1Llw76aYFxLswVs1fZgA3zU+X3ZcNQr5r0WIX9QKO1XIEahLa3xvY4HNBspeDROOW7clk0 dOThmOdyEYIYxr1HH3znIMLa4P/y36sYOxFMY7nwBDQ8PA0cmNppXuXoD7eKcKZmhNh6ySzCkb+ TOfw3wv+YeHHf/+K0NlkZ7atTvNCzX/r8TLJyIgHT10RNw9heY5LbXtRAaSZBHtflNm+++VVZww MNGwOpY8/NMtISs69syX7pt/Ofxb8QZlKmIvFzp4w8T+LCV39/PSzC1pluXgxGVVBCmU5I5YRDL W+t4ClPv/R80I1FTXn4sECAFAtDIYuRBJzHKlnrYievO8lJ/zpOncI5pMbI2N4eOk4KZ19hh X-Proofpoint-ORIG-GUID: BB_17PZOuJGqHh3DBRdJaiKIPiISI0b0 X-Authority-Analysis: v=2.4 cv=HcIUTjE8 c=1 sm=1 tr=0 ts=683e1aa9 cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=6IFa9wvqVegA:10 a=VwQbUJbxAAAA:8 a=VnNF1IyMAAAA:8 a=gYqNpyX8Y4BRQe2u7a0A:9 X-Proofpoint-GUID: BB_17PZOuJGqHh3DBRdJaiKIPiISI0b0 X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1099,Hydra:6.0.736,FMLib:17.12.80.40 definitions=2025-06-02_08,2025-06-02_01,2025-03-28_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 lowpriorityscore=0 clxscore=1015 mlxlogscore=821 suspectscore=0 malwarescore=0 impostorscore=0 phishscore=0 spamscore=0 bulkscore=0 mlxscore=0 adultscore=0 priorityscore=1501 classifier=spam authscore=0 authtc=n/a authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.19.0-2505280000 definitions=main-2506020178 v1: https://lore.kernel.org/linux-trace-devel/20250416231325.14113-1-iii@linux.ibm.com/ v1 -> v2: Rewrite the size instead of reading the file twice (Steven). Turns out exposing do_lseek() is not necessary, since everything is in the same C file. Hi, this series fixes tracing in presence of frequent BPF or kernel module loads/unloads. Patch 1 is a small required improvement; patch 2 is the actual implementation. Best regards, Ilya Ilya Leoshkevich (2): libtracecmd: Support querying position within a new compressed block libtracecmd: Support changing /proc/kallsyms lib/trace-cmd/trace-compress.c | 5 ++++- lib/trace-cmd/trace-output.c | 26 +++++++++++++++++++++++++- 2 files changed, 29 insertions(+), 2 deletions(-) -- 2.49.0