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Sun, 8 Apr 2018 20:26:42 -0400 From: Sasha Levin To: "stable@vger.kernel.org" , "linux-kernel@vger.kernel.org" CC: Namhyung Kim , Adrian Hunter , David Ahern , Peter Zijlstra , Wang Nan , "kernel-team@lge.com" , Arnaldo Carvalho de Melo , Sasha Levin Subject: [PATCH AUTOSEL for 4.9 015/293] perf tools: Decompress kernel module when reading DSO data Thread-Topic: [PATCH AUTOSEL for 4.9 015/293] perf tools: Decompress kernel module when reading DSO data Thread-Index: AQHTz5jqrDr4YpTazEmk1BBVUFbDGw== Date: Mon, 9 Apr 2018 00:23:00 +0000 Message-ID: <20180409002239.163177-15-alexander.levin@microsoft.com> References: <20180409002239.163177-1-alexander.levin@microsoft.com> In-Reply-To: <20180409002239.163177-1-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;DM5PR2101MB0885;7:SON1Xv1UdNkuTbm2ZamhXrNSTi5wGPH4tGrqKgqDwe/2Ow/tLr+Vyq4VNE58rktVY1RcFpm3K68TpjgpzmkmLIgnjtC6Y9zj+Y8/PlfaYC2QEAZPYNwBrRHbahWSaH5C89Mr77FjKUNOb8DkHQKEqBTP7z7w/8mr3Apzzq76KxfMi9APguIwO5I2SQJ3tTZUTctXpkGL/cpp+illjV1ov/FmSmW99epCMcQu48sOLrrFtOfhUUYTN66DFLUkUAMy;20:3wef03saLhzwfciODIIodphtNZ5V6KJGMAlZ20gPVrXWMG1J4bkBuRacO1DH+JcpOycGNGZN03ngFBZKp4YXq2KPz+60SAa+VD4TKZ8uxG6AVbBo29zaDRkbegcf6c/GKQTRVVdf9/Hc98WBIHiRNetEfefOtZJGBjRny8UAxkM= x-ms-office365-filtering-ht: Tenant X-MS-Office365-Filtering-Correlation-Id: 1293857a-6d24-4516-32bb-08d59db08f69 x-microsoft-antispam: UriScan:;BCL:0;PCL:0;RULEID:(7020095)(4652020)(48565401081)(5600026)(4604075)(3008032)(4534165)(4627221)(201703031133081)(201702281549075)(2017052603328)(7193020);SRVR:DM5PR2101MB0885; 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Signed-off-by: Namhyung Kim Acked-by: Jiri Olsa Cc: Adrian Hunter Cc: David Ahern Cc: Peter Zijlstra Cc: Wang Nan Cc: kernel-team@lge.com Link: http://lkml.kernel.org/r/20170608073109.30699-6-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo Signed-off-by: Sasha Levin --- tools/perf/util/dso.c | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) diff --git a/tools/perf/util/dso.c b/tools/perf/util/dso.c index d2c6cdd9d42b..4bc58822416c 100644 --- a/tools/perf/util/dso.c +++ b/tools/perf/util/dso.c @@ -366,7 +366,23 @@ static int __open_dso(struct dso *dso, struct machine = *machine) if (!is_regular_file(name)) return -EINVAL; =20 + if (dso__needs_decompress(dso)) { + char newpath[KMOD_DECOMP_LEN]; + size_t len =3D sizeof(newpath); + + if (dso__decompress_kmodule_path(dso, name, newpath, len) < 0) { + free(name); + return -dso->load_errno; + } + + strcpy(name, newpath); + } + fd =3D do_open(name); + + if (dso__needs_decompress(dso)) + unlink(name); + free(name); return fd; } --=20 2.15.1