From: Li Huafei <lihuafei1@huawei.com>
To: <jolsa@kernel.org>, <acme@kernel.org>
Cc: <peterz@infradead.org>, <mark.rutland@arm.com>,
<mingo@redhat.com>, <alexander.shishkin@linux.intel.com>,
<namhyung@kernel.org>, <mliska@suse.cz>, <irogers@google.com>,
<dzhu@wavecomp.com>, <rickyman7@gmail.com>,
<yao.jin@linux.intel.com>, <linux-perf-users@vger.kernel.org>,
<linux-kernel@vger.kernel.org>, <zhangjinhao2@huawei.com>
Subject: [PATCH] perf env: Normalize aarch64.* to arm64 in normalize_arch()
Date: Fri, 23 Jul 2021 09:49:44 +0800 [thread overview]
Message-ID: <20210723014944.214887-1-lihuafei1@huawei.com> (raw)
On my aarch64 big endian machine, the perf annotate does not work.
# perf annotate
Percent | Source code & Disassembly of [kernel.kallsyms] for cycles (253 samples, percent: local period)
--------------------------------------------------------------------------------------------------------------
Percent | Source code & Disassembly of [kernel.kallsyms] for cycles (1 samples, percent: local period)
------------------------------------------------------------------------------------------------------------
Percent | Source code & Disassembly of [kernel.kallsyms] for cycles (47 samples, percent: local period)
-------------------------------------------------------------------------------------------------------------
...
This is because the arch_find() function uses the normalized architecture
name provided by normalize_arch(), and my machine's architecture name
aarch64_be is not normalized to arm64. Like other architectures such as
arm and powerpc, we can fuzzy match the architecture names associated with
aarch64.* and normalize them.
Fixes: c34df25b40c2 ("perf annotate: Add symbol__annotate function")
Signed-off-by: Li Huafei <lihuafei1@huawei.com>
---
tools/perf/util/annotate.c | 4 +++-
tools/perf/util/env.c | 2 +-
2 files changed, 4 insertions(+), 2 deletions(-)
diff --git a/tools/perf/util/annotate.c b/tools/perf/util/annotate.c
index aa04a3655236..cb280de3369f 100644
--- a/tools/perf/util/annotate.c
+++ b/tools/perf/util/annotate.c
@@ -2192,8 +2192,10 @@ int symbol__annotate(struct map_symbol *ms, struct evsel *evsel,
return errno;
args.arch = arch = arch__find(arch_name);
- if (arch == NULL)
+ if (arch == NULL) {
+ pr_err("%s: unsupported arch %s\n", __func__, arch_name);
return ENOTSUP;
+ }
if (parch)
*parch = arch;
diff --git a/tools/perf/util/env.c b/tools/perf/util/env.c
index cec2e6cad8aa..a91da1e9b201 100644
--- a/tools/perf/util/env.c
+++ b/tools/perf/util/env.c
@@ -349,7 +349,7 @@ static const char *normalize_arch(char *arch)
return "x86";
if (!strcmp(arch, "sun4u") || !strncmp(arch, "sparc", 5))
return "sparc";
- if (!strcmp(arch, "aarch64") || !strcmp(arch, "arm64"))
+ if (!strncmp(arch, "aarch64", 7) || !strcmp(arch, "arm64"))
return "arm64";
if (!strncmp(arch, "arm", 3) || !strcmp(arch, "sa110"))
return "arm";
--
2.17.1
next reply other threads:[~2021-07-23 1:48 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-23 1:49 Li Huafei [this message]
2021-07-23 19:23 ` [PATCH] perf env: Normalize aarch64.* to arm64 in normalize_arch() Arnaldo Carvalho de Melo
2021-07-26 10:04 ` James Clark
2021-07-26 13:04 ` Li Huafei
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