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perf tools: Add compression id into 'struct kmod_path' 

Store a decompression ID in 'struct kmod_path', so it can be later
stored in 'struct dso'.

Switch 'struct kmod_path's 'comp' from 'bool' to 'int' to return the
compressions array index. Add 0 index item into compressions array, so
that the comp usage stays as it was: 0 - no compression, != 0
compression index.

Update the kmod_path tests.

Committer notes:

Use a designated initializer + terminating comma, e.g. { .fmt = NULL, }, to fix
the build in several distros:

  centos:6:       util/dso.c:201: error: missing initializer
  centos:6:       util/dso.c:201: error: (near initialization for 'compressions[0].decompress')
  debian:9:       util/dso.c:201:24: error: missing field 'decompress' initializer [-Werror,-Wmissing-field-initializers]
  fedora:25:      util/dso.c:201:24: error: missing field 'decompress' initializer [-Werror,-Wmissing-field-initializers]
  fedora:26:      util/dso.c:201:24: error: missing field 'decompress' initializer [-Werror,-Wmissing-field-initializers]
  fedora:27:      util/dso.c:201:24: error: missing field 'decompress' initializer [-Werror,-Wmissing-field-initializers]
  oraclelinux:6:  util/dso.c:201: error: missing initializer
  oraclelinux:6:  util/dso.c:201: error: (near initialization for 'compressions[0].decompress')
  ubuntu:12.04.5: util/dso.c:201:2: error: missing initializer [-Werror=missing-field-initializers]
  ubuntu:12.04.5: util/dso.c:201:2: error: (near initialization for 'compressions[0].decompress') [-Werror=missing-field-initializers]
  ubuntu:16.04:   util/dso.c:201:24: error: missing field 'decompress' initializer [-Werror,-Wmissing-field-initializers]
  ubuntu:16.10:   util/dso.c:201:24: error: missing field 'decompress' initializer [-Werror,-Wmissing-field-initializers]
  ubuntu:16.10:   util/dso.c:201:24: error: missing field 'decompress' initializer [-Werror,-Wmissing-field-initializers]
  ubuntu:17.10:   util/dso.c:201:24: error: missing field 'decompress' initializer [-Werror,-Wmissing-field-initializers]

Signed-off-by: Jiri Olsa <jolsa@kernel.org>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Michael Petlan <mpetlan@redhat.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Peter Zijlstra <peterz@infradead.org>
Link: http://lkml.kernel.org/r/20180817094813.15086-7-jolsa@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Jiri Olsa 2018-08-17 11:48:06 +02:00 committed by Arnaldo Carvalho de Melo
parent e1e139463d
commit 4b838b0db4
3 changed files with 33 additions and 29 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

42
tools/perf/tests/kmod-path.c
View File

@ -6,7 +6,7 @@
#include "debug.h"
static int test(const char *path, bool alloc_name, bool alloc_ext,
bool kmod, bool comp, const char *name, const char *ext)
bool kmod, int comp, const char *name, const char *ext)
{
struct kmod_path m;
@ -54,47 +54,47 @@ static int test_is_kernel_module(const char *path, int cpumode, bool expect)
int test__kmod_path__parse(struct test *t __maybe_unused, int subtest __maybe_unused)
{
/* path alloc_name alloc_ext kmod comp name ext */
T("/xxxx/xxxx/x-x.ko", true , true , true, false, "[x_x]", NULL);
T("/xxxx/xxxx/x-x.ko", false , true , true, false, NULL , NULL);
T("/xxxx/xxxx/x-x.ko", true , false , true, false, "[x_x]", NULL);
T("/xxxx/xxxx/x-x.ko", false , false , true, false, NULL , NULL);
T("/xxxx/xxxx/x-x.ko", true , true , true, 0 , "[x_x]", NULL);
T("/xxxx/xxxx/x-x.ko", false , true , true, 0 , NULL , NULL);
T("/xxxx/xxxx/x-x.ko", true , false , true, 0 , "[x_x]", NULL);
T("/xxxx/xxxx/x-x.ko", false , false , true, 0 , NULL , NULL);
M("/xxxx/xxxx/x-x.ko", PERF_RECORD_MISC_CPUMODE_UNKNOWN, true);
M("/xxxx/xxxx/x-x.ko", PERF_RECORD_MISC_KERNEL, true);
M("/xxxx/xxxx/x-x.ko", PERF_RECORD_MISC_USER, false);
#ifdef HAVE_ZLIB_SUPPORT
/* path alloc_name alloc_ext kmod comp name ext */
T("/xxxx/xxxx/x.ko.gz", true , true , true, true, "[x]", "gz");
T("/xxxx/xxxx/x.ko.gz", false , true , true, true, NULL , "gz");
T("/xxxx/xxxx/x.ko.gz", true , false , true, true, "[x]", NULL);
T("/xxxx/xxxx/x.ko.gz", false , false , true, true, NULL , NULL);
T("/xxxx/xxxx/x.ko.gz", true , true , true, 1 , "[x]", "gz");
T("/xxxx/xxxx/x.ko.gz", false , true , true, 1 , NULL , "gz");
T("/xxxx/xxxx/x.ko.gz", true , false , true, 1 , "[x]", NULL);
T("/xxxx/xxxx/x.ko.gz", false , false , true, 1 , NULL , NULL);
M("/xxxx/xxxx/x.ko.gz", PERF_RECORD_MISC_CPUMODE_UNKNOWN, true);
M("/xxxx/xxxx/x.ko.gz", PERF_RECORD_MISC_KERNEL, true);
M("/xxxx/xxxx/x.ko.gz", PERF_RECORD_MISC_USER, false);
/* path alloc_name alloc_ext kmod comp name ext */
T("/xxxx/xxxx/x.gz", true , true , false, true, "x.gz" ,"gz");
T("/xxxx/xxxx/x.gz", false , true , false, true, NULL ,"gz");
T("/xxxx/xxxx/x.gz", true , false , false, true, "x.gz" , NULL);
T("/xxxx/xxxx/x.gz", false , false , false, true, NULL , NULL);
T("/xxxx/xxxx/x.gz", true , true , false, 1 , "x.gz" ,"gz");
T("/xxxx/xxxx/x.gz", false , true , false, 1 , NULL ,"gz");
T("/xxxx/xxxx/x.gz", true , false , false, 1 , "x.gz" , NULL);
T("/xxxx/xxxx/x.gz", false , false , false, 1 , NULL , NULL);
M("/xxxx/xxxx/x.gz", PERF_RECORD_MISC_CPUMODE_UNKNOWN, false);
M("/xxxx/xxxx/x.gz", PERF_RECORD_MISC_KERNEL, false);
M("/xxxx/xxxx/x.gz", PERF_RECORD_MISC_USER, false);
/* path alloc_name alloc_ext kmod comp name ext */
T("x.gz", true , true , false, true, "x.gz", "gz");
T("x.gz", false , true , false, true, NULL , "gz");
T("x.gz", true , false , false, true, "x.gz", NULL);
T("x.gz", false , false , false, true, NULL , NULL);
T("x.gz", true , true , false, 1 , "x.gz", "gz");
T("x.gz", false , true , false, 1 , NULL , "gz");
T("x.gz", true , false , false, 1 , "x.gz", NULL);
T("x.gz", false , false , false, 1 , NULL , NULL);
M("x.gz", PERF_RECORD_MISC_CPUMODE_UNKNOWN, false);
M("x.gz", PERF_RECORD_MISC_KERNEL, false);
M("x.gz", PERF_RECORD_MISC_USER, false);
/* path alloc_name alloc_ext kmod comp name ext */
T("x.ko.gz", true , true , true, true, "[x]", "gz");
T("x.ko.gz", false , true , true, true, NULL , "gz");
T("x.ko.gz", true , false , true, true, "[x]", NULL);
T("x.ko.gz", false , false , true, true, NULL , NULL);
T("x.ko.gz", true , true , true, 1 , "[x]", "gz");
T("x.ko.gz", false , true , true, 1 , NULL , "gz");
T("x.ko.gz", true , false , true, 1 , "[x]", NULL);
T("x.ko.gz", false , false , true, 1 , NULL , NULL);
M("x.ko.gz", PERF_RECORD_MISC_CPUMODE_UNKNOWN, true);
M("x.ko.gz", PERF_RECORD_MISC_KERNEL, true);
M("x.ko.gz", PERF_RECORD_MISC_USER, false);

18
tools/perf/util/dso.c
View File

@ -189,10 +189,15 @@ int dso__read_binary_type_filename(const struct dso *dso,
return ret;
}
enum {
COMP_ID__NONE = 0,
};
static const struct {
const char *fmt;
int (*decompress)(const char *input, int output);
} compressions[] = {
[COMP_ID__NONE] = { .fmt = NULL, },
#ifdef HAVE_ZLIB_SUPPORT
{ "gz", gzip_decompress_to_file },
#endif
@ -202,15 +207,15 @@ static const struct {
{ NULL, NULL },
};
static bool is_supported_compression(const char *ext)
static int is_supported_compression(const char *ext)
{
unsigned i;
for (i = 0; compressions[i].fmt; i++) {
for (i = 1; compressions[i].fmt; i++) {
if (!strcmp(ext, compressions[i].fmt))
return true;
return i;
}
return false;
return COMP_ID__NONE;
}
bool is_kernel_module(const char *pathname, int cpumode)
@ -372,10 +377,9 @@ int __kmod_path__parse(struct kmod_path *m, const char *path,
return 0;
}
if (is_supported_compression(ext + 1)) {
m->comp = true;
m->comp = is_supported_compression(ext + 1);
if (m->comp > COMP_ID__NONE)
ext -= 3;
}
/* Check .ko extension only if there's enough name left. */
if (ext > name)

2
tools/perf/util/dso.h
View File

@ -262,7 +262,7 @@ int dso__decompress_kmodule_path(struct dso *dso, const char *name,
struct kmod_path {
char *name;
char *ext;
bool comp;
int comp;
bool kmod;
};