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perf tools: Use normalized arch name for searching objdump path 

David reported that perf report for i686 target data on x86_64 host
failed to work because it tried to find out cross-compiled objdump.

However objdump for x86_64 is compatible to i686 so that it doesn't need
to do it at all.  To prevent similar artifacts, normalize arch name when
comparing host and file architectures.

Reported-by: David Ahern <dsahern@gmail.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
Reviewed-by: David Ahern <dsahern@gmail.com>
Tested-by: David Ahern <dsahern@gmail.com>
Cc: David Ahern <dsahern@gmail.com>
Cc: Ingo Molnar <mingo@kernel.org>
Cc: Irina Tirdea <irina.tirdea@gmail.com>
Cc: Paul Mackerras <paulus@samba.org>
Cc: Peter Zijlstra <a.p.zijlstra@chello.nl>
Link: http://lkml.kernel.org/r/1351835406-15208-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
This commit is contained in:
Namhyung Kim 2012-11-02 14:50:04 +09:00 committed by Arnaldo Carvalho de Melo
parent b84800a315
commit 48ed0ece1b
1 changed files with 33 additions and 7 deletions
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40
tools/perf/arch/common.c
View File

@ -93,16 +93,46 @@ static int lookup_triplets(const char *const *triplets, const char *name)
return -1;
}
/*
* Return architecture name in a normalized form.
* The conversion logic comes from the Makefile.
*/
static const char *normalize_arch(char *arch)
{
if (!strcmp(arch, "x86_64"))
return "x86";
if (arch[0] == 'i' && arch[2] == '8' && arch[3] == '6')
return "x86";
if (!strcmp(arch, "sun4u") || !strncmp(arch, "sparc", 5))
return "sparc";
if (!strncmp(arch, "arm", 3) || !strcmp(arch, "sa110"))
return "arm";
if (!strncmp(arch, "s390", 4))
return "s390";
if (!strncmp(arch, "parisc", 6))
return "parisc";
if (!strncmp(arch, "powerpc", 7) || !strncmp(arch, "ppc", 3))
return "powerpc";
if (!strncmp(arch, "mips", 4))
return "mips";
if (!strncmp(arch, "sh", 2) && isdigit(arch[2]))
return "sh";
return arch;
}
static int perf_session_env__lookup_binutils_path(struct perf_session_env *env,
const char *name,
const char **path)
{
int idx;
char *arch, *cross_env;
const char *arch, *cross_env;
struct utsname uts;
const char *const *path_list;
char *buf = NULL;
arch = normalize_arch(env->arch);
if (uname(&uts) < 0)
goto out;
@ -110,7 +140,7 @@ static int perf_session_env__lookup_binutils_path(struct perf_session_env *env,
* We don't need to try to find objdump path for native system.
* Just use default binutils path (e.g.: "objdump").
*/
if (!strcmp(uts.machine, env->arch))
if (!strcmp(normalize_arch(uts.machine), arch))
goto out;
cross_env = getenv("CROSS_COMPILE");
@ -127,8 +157,6 @@ static int perf_session_env__lookup_binutils_path(struct perf_session_env *env,
free(buf);
}
arch = env->arch;
if (!strcmp(arch, "arm"))
path_list = arm_triplets;
else if (!strcmp(arch, "powerpc"))
@ -139,9 +167,7 @@ static int perf_session_env__lookup_binutils_path(struct perf_session_env *env,
path_list = s390_triplets;
else if (!strcmp(arch, "sparc"))
path_list = sparc_triplets;
else if (!strcmp(arch, "x86") || !strcmp(arch, "i386") ||
!strcmp(arch, "i486") || !strcmp(arch, "i586") ||
!strcmp(arch, "i686"))
else if (!strcmp(arch, "x86"))
path_list = x86_triplets;
else if (!strcmp(arch, "mips"))
path_list = mips_triplets;