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Revert "perf tests: Decompress kernel module before objdump"

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This reverts commit b0761b57e0 which is
commit 94df1040b1e6aacd8dec0ba3c61d7e77cd695f26 upstream.

It breaks the build of perf on 4.4.y, so I'm dropping it.

Reported-by: Pavlos Parissis <pavlos.parissis@gmail.com>
Reported-by: Lei Chen <chenl.lei@gmail.com>
Reported-by: Maxime Hadjinlian <maxime.hadjinlian@gmail.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: David Ahern <dsahern@gmail.com>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Cc: Wang Nan <wangnan0@huawei.com>
Cc: kernel-team@lge.com
Cc: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Sasha Levin <alexander.levin@microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Greg Kroah-Hartman 2018-04-17 14:56:21 +02:00
parent f83eb6b57f
commit 9580b588c8
1 changed files with 1 additions and 19 deletions
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20
tools/perf/tests/code-reading.c
View file

@ -182,8 +182,6 @@ static int read_object_code(u64 addr, size_t len, u8 cpumode,
unsigned char buf2[BUFSZ];
size_t ret_len;
u64 objdump_addr;
const char *objdump_name;
char decomp_name[KMOD_DECOMP_LEN];
int ret;
pr_debug("Reading object code for memory address: %#"PRIx64"\n", addr);
@ -244,25 +242,9 @@ static int read_object_code(u64 addr, size_t len, u8 cpumode,
state->done[state->done_cnt++] = al.map->start;
}
objdump_name = 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 = decomp_name;
}
/* Read the object code using objdump */
objdump_addr = map__rip_2objdump(al.map, al.addr);
ret = read_via_objdump(objdump_name, objdump_addr, buf2, len);
if (dso__needs_decompress(al.map->dso))
unlink(objdump_name);
ret = read_via_objdump(al.map->dso->long_name, objdump_addr, buf2, len);
if (ret > 0) {
/*
* The kernel maps are inaccurate - assume objdump is right in