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Sun, 8 Apr 2018 20:26:44 -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 4.9 016/293] perf tests: Decompress kernel module before objdump Thread-Topic: [PATCH AUTOSEL for 4.9 016/293] perf tests: Decompress kernel module before objdump Thread-Index: AQHTz5jrALn3ow7XIk+jZZngG7wkkg== Date: Mon, 9 Apr 2018 00:23:01 +0000 Message-ID: <20180409002239.163177-16-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:e6vmq+50B+CsXG5O9yFN/jS+PkTjdpph1YvepJ5FV7FORN81oxFSiEGYkX9ujYSrSiq1d8DSl2cbVYR6tVZ4OAAQEx9LbDnr56OHBXgfoDIK2bj27jQ+07uTBo9pW/T+3xmINo8GLxJZHmr2GnvNUHnJsQGDazuZoHKwx4CA4awzT2iWAJl2DqToHDYnR/QTU2wX0PHJaXX8+sRZwpIis2vtjFQ2Bw+jwtRQwreM1S4AmFz69M9kt0DERFuFJ0+U;20:rtBpQr2ckQwVoTBQQ4D5TXX61NjAClugqLkYTAHMdJAr0WONlfNrDUa408CM25iweMCEodCHMihErdYMH6nPdfxB0Yc6n7E5SMlhKEslbSn0E2I8+CM2+hFDq1UdiT0ESRGfBvxbpCvzZVQr54IYT/SsEIPb6Xyq5kyMwS+AF4s= x-ms-office365-filtering-ht: Tenant X-MS-Office365-Filtering-Correlation-Id: 225234af-ad5d-40a3-42ea-08d59db08fba 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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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 ff5bc6363a79..150334064071 100644 --- a/tools/perf/tests/code-reading.c +++ b/tools/perf/tests/code-reading.c @@ -224,6 +224,8 @@ 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); @@ -284,9 +286,25 @@ 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