From: "Georg Müller" <georgmueller@gmx.net>
To: Peter Zijlstra <peterz@infradead.org>,
Ingo Molnar <mingo@redhat.com>,
Arnaldo Carvalho de Melo <acme@kernel.org>,
Mark Rutland <mark.rutland@arm.com>,
Alexander Shishkin <alexander.shishkin@linux.intel.com>,
Jiri Olsa <jolsa@kernel.org>, Namhyung Kim <namhyung@kernel.org>,
Ian Rogers <irogers@google.com>,
Adrian Hunter <adrian.hunter@intel.com>,
"Masami Hiramatsu (Google)" <mhiramat@kernel.org>
Cc: "Georg Müller" <georgmueller@gmx.net>,
regressions@lists.linux.dev,
"Arnaldo Carvalho de Melo" <acme@redhat.com>,
linux-perf-users@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v3 0/2] perf probe: fix regression introduced by switch to die_get_decl_file
Date: Wed, 28 Jun 2023 10:45:48 +0200 [thread overview]
Message-ID: <20230628084551.1860532-3-georgmueller@gmx.net> (raw)
When switching from dwarf_decl_file() to die_get_decl_file(), a regression
was introduced when having a binary where the DWARF info is split to
multiple CUs. It is not possible to add probes to certain functions.
These patches introduce a testcase which shows the current regression
and a fix for the issue
Signed-off-by: Georg Müller <georgmueller@gmx.net>
Link: https://lore.kernel.org/r/5a00d5a5-7be7-ef8a-4044-9a16249fff25@gmx.net/
---
Changes in v2:
- Add testcase
Changes in v3:
- start new thread
- add stable to cc
Georg Müller (2):
perf probe: add test for regression introduced by switch to
die_get_decl_file
perf probe: read DWARF files from the correct CU
.../shell/test_uprobe_from_different_cu.sh | 77 +++++++++++++++++++
tools/perf/util/dwarf-aux.c | 4 +-
2 files changed, 80 insertions(+), 1 deletion(-)
create mode 100755 tools/perf/tests/shell/test_uprobe_from_different_cu.sh
--
2.41.0
next reply other threads:[~2023-06-28 9:02 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-28 8:45 Georg Müller [this message]
2023-06-28 8:45 ` [PATCH v3 1/2] perf probe: add test for " Georg Müller
2023-06-28 8:45 ` [PATCH v3 2/2] perf probe: read DWARF files from the correct CU Georg Müller
2023-07-10 12:32 ` [PATCH v3 0/2] perf probe: fix regression introduced by switch to die_get_decl_file Linux regression tracking (Thorsten Leemhuis)
2023-07-10 13:44 ` Arnaldo Carvalho de Melo
2023-07-10 13:49 ` Linux regression tracking (Thorsten Leemhuis)
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