From: Namhyung Kim
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
Cc: David Ahern
Cc: Irina Tirdea
Signed-off-by: Namhyung Kim
---
tools/perf/arch/common.c | 40 +---
1 file changed, 33 insertions(+), 7 deletions(-)
diff --git a/tools/perf/arch/common.c b/tools/perf/arch/common.c
index 2367b253f039..5683529135b1 100644
--- a/tools/perf/arch/common.c
+++ b/tools/perf/arch/common.c
@@ -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;
--
1.7.11.7
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majord...@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
