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Sun, 8 Apr 2018 20:35:00 -0400 From: Sasha Levin To: "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: Namhyung Kim , David Ahern , Peter Zijlstra , Wang Nan , "kernel-team@lge.com" , Arnaldo Carvalho de Melo , Sasha Levin Subject: [PATCH AUTOSEL for 4.4 009/162] perf tests: Decompress kernel module before objdump Thread-Topic: [PATCH AUTOSEL for 4.4 009/162] perf tests: Decompress kernel module before objdump Thread-Index: AQHTz5mXDeYPvoJLsU+QfB//bxQqIw== Date: Mon, 9 Apr 2018 00:27:49 +0000 Message-ID: <20180409002738.163941-9-alexander.levin@microsoft.com> References: <20180409002738.163941-1-alexander.levin@microsoft.com> In-Reply-To: <20180409002738.163941-1-alexander.levin@microsoft.com> Accept-Language: en-US Content-Language: en-US X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [52.168.54.252] x-ms-publictraffictype: Email x-microsoft-exchange-diagnostics: 1;DM5PR2101MB1013;7:KcyyJU4o7ll2qXK0bD1Dhssx6pG18Rul5pXvXNre4/YI1Il79cA5LLwmQmEx2VhdcVWysoIfs7iSNKMiyXvREWHTqUQMrB9k0/KBvlVxme0N3/WR7mSd7YTOXShl7fMolocS33KJQiaaymhME8nLi3q2WoeLHpOqZHORzxh5cSLqHFaCXpHRMnkwM5tUXQPQdI0i3CsA6ADqA1ZRzs5vT3O1h2/wr+smkjksbWpVbwRJbg96knyeqIbCVf0gxwcU;20:ZbgOm89pX9F8oU0lOMwC2g9h6ywIPkyU/0QUlUH9U1Juf8lCIhxWuoJjnQAcJg3n8QbEr/9gkWXiPkOF3W9ynMsXOh+Dubnm9qQ0wwj7kN2B3HeqZ63SnvEF1bU4X82IFTi+s9G42DzcGS3bQYV7UQ459lLgeTuFUazEcXjS/eM= X-MS-Office365-Filtering-Correlation-Id: eee156ba-4cc6-4be8-47b1-08d59db1b781 x-ms-office365-filtering-ht: Tenant x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(4534165)(4627221)(201703031133081)(201702281549075)(5600026)(4604075)(3008032)(48565401081)(2017052603328)(7193020);SRVR:DM5PR2101MB1013; 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This fixes a failure of object code reading test for me. Signed-off-by: Namhyung Kim Acked-by: Adrian Hunter Acked-by: Jiri Olsa Cc: David Ahern Cc: Peter Zijlstra Cc: Wang Nan Cc: kernel-team@lge.com Link: http://lkml.kernel.org/r/20170608073109.30699-8-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin --- tools/perf/tests/code-reading.c | 20 +++++++++++++++++++- 1 file changed, 19 insertions(+), 1 deletion(-) diff --git a/tools/perf/tests/code-reading.c b/tools/perf/tests/code-readin= g.c index a767a6400c5c..6ea4fcfaab36 100644 --- a/tools/perf/tests/code-reading.c +++ b/tools/perf/tests/code-reading.c @@ -182,6 +182,8 @@ static int read_object_code(u64 addr, size_t len, u8 cp= umode, unsigned char buf2[BUFSZ]; size_t ret_len; u64 objdump_addr; + const char *objdump_name; + char decomp_name[KMOD_DECOMP_LEN]; int ret; =20 pr_debug("Reading object code for memory address: %#"PRIx64"\n", addr); @@ -242,9 +244,25 @@ static int read_object_code(u64 addr, size_t len, u8 c= pumode, state->done[state->done_cnt++] =3D al.map->start; } =20 + objdump_name =3D al.map->dso->long_name; + if (dso__needs_decompress(al.map->dso)) { + if (dso__decompress_kmodule_path(al.map->dso, objdump_name, + decomp_name, + sizeof(decomp_name)) < 0) { + pr_debug("decompression failed\n"); + return -1; + } + + objdump_name =3D decomp_name; + } + /* Read the object code using objdump */ objdump_addr =3D map__rip_2objdump(al.map, al.addr); - ret =3D read_via_objdump(al.map->dso->long_name, objdump_addr, buf2, len)= ; + ret =3D read_via_objdump(objdump_name, objdump_addr, buf2, len); + + if (dso__needs_decompress(al.map->dso)) + unlink(objdump_name); + if (ret > 0) { /* * The kernel maps are inaccurate - assume objdump is right in --=20 2.15.1