diff options
| author |   Adrian Hunter <adrian.hunter@intel.com> | 2022-07-11 12:32:05 +0300 |
|---|---|---|
| committer |   Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-07-20 11:08:37 -0300 |
| commit | a5367ecb5353fbf28bfd3979fc4f61ddebec80b1 (patch) | |
| tree | eed8b8c2b6de100c6c798a4b70e19d469bd0ffe8 /tools/perf/util/symbol.c | |
| parent | perf tools: Make has_kcore_dir() work also for guest kcore_dir (diff) | |
| download | linux-dev-a5367ecb5353fbf28bfd3979fc4f61ddebec80b1.tar.xz linux-dev-a5367ecb5353fbf28bfd3979fc4f61ddebec80b1.zip | |
perf tools: Automatically use guest kcore_dir if present
When registering a guest machine using machine_pid from the id index,
check perf.data for a matching kcore_dir subdirectory and set the
kallsyms file name accordingly. If set, use it to find the machine's
kernel symbols and object code (from kcore).
Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Cc: Andi Kleen <ak@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: kvm@vger.kernel.org
Link: https://lore.kernel.org/r/20220711093218.10967-23-adrian.hunter@intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to '')
| -rw-r--r-- | tools/perf/util/symbol.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/tools/perf/util/symbol.c b/tools/perf/util/symbol.c index f72baf636724..a4b22caa7c24 100644 --- a/tools/perf/util/symbol.c +++ b/tools/perf/util/symbol.c @@ -2300,11 +2300,13 @@ do_kallsyms: static int dso__load_guest_kernel_sym(struct dso *dso, struct map *map) { int err; - const char *kallsyms_filename = NULL; + const char *kallsyms_filename; struct machine *machine = map__kmaps(map)->machine; char path[PATH_MAX]; - if (machine__is_default_guest(machine)) { + if (machine->kallsyms_filename) { + kallsyms_filename = machine->kallsyms_filename; + } else if (machine__is_default_guest(machine)) { /* * if the user specified a vmlinux filename, use it and only * it, reporting errors to the user if it cannot be used. |