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-rw-r--r--tools/perf/util/cache.h9
-rw-r--r--tools/perf/util/config.c2
-rw-r--r--tools/perf/util/evsel.c23
-rw-r--r--tools/perf/util/hist.c34
-rw-r--r--tools/perf/util/hist.h14
-rw-r--r--tools/perf/util/llvm-utils.c42
-rw-r--r--tools/perf/util/llvm-utils.h5
-rw-r--r--tools/perf/util/path.c65
8 files changed, 83 insertions, 111 deletions
diff --git a/tools/perf/util/cache.h b/tools/perf/util/cache.h
index 0d814bb74661..369f382eedb6 100644
--- a/tools/perf/util/cache.h
+++ b/tools/perf/util/cache.h
@@ -11,14 +11,9 @@
#include <linux/string.h>
#define CMD_EXEC_PATH "--exec-path"
-#define CMD_PERF_DIR "--perf-dir="
-#define CMD_WORK_TREE "--work-tree="
#define CMD_DEBUGFS_DIR "--debugfs-dir="
-#define PERF_DIR_ENVIRONMENT "PERF_DIR"
-#define PERF_WORK_TREE_ENVIRONMENT "PERF_WORK_TREE"
#define EXEC_PATH_ENVIRONMENT "PERF_EXEC_PATH"
-#define DEFAULT_PERF_DIR_ENVIRONMENT ".perf"
#define PERF_DEBUGFS_ENVIRONMENT "PERF_DEBUGFS_DIR"
#define PERF_TRACEFS_ENVIRONMENT "PERF_TRACEFS_DIR"
#define PERF_PAGER_ENVIRONMENT "PERF_PAGER"
@@ -32,7 +27,6 @@ int perf_config_int(const char *, const char *);
u64 perf_config_u64(const char *, const char *);
int perf_config_bool(const char *, const char *);
int config_error_nonbool(const char *);
-const char *perf_config_dirname(const char *, const char *);
const char *perf_etc_perfconfig(void);
char *alias_lookup(const char *alias);
@@ -45,9 +39,6 @@ static inline int is_absolute_path(const char *path)
return path[0] == '/';
}
-char *strip_path_suffix(const char *path, const char *suffix);
-
char *mkpath(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
-char *perf_path(const char *fmt, ...) __attribute__((format (printf, 1, 2)));
#endif /* __PERF_CACHE_H */
diff --git a/tools/perf/util/config.c b/tools/perf/util/config.c
index 31e09a4e8862..d15c59267644 100644
--- a/tools/perf/util/config.c
+++ b/tools/perf/util/config.c
@@ -372,7 +372,7 @@ int perf_config_bool(const char *name, const char *value)
return !!perf_config_bool_or_int(name, value, &discard);
}
-const char *perf_config_dirname(const char *name, const char *value)
+static const char *perf_config_dirname(const char *name, const char *value)
{
if (!name)
return NULL;
diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c
index 9b2e3e624efe..1d8f2bbd38a7 100644
--- a/tools/perf/util/evsel.c
+++ b/tools/perf/util/evsel.c
@@ -1389,8 +1389,11 @@ fallback_missing_features:
if (perf_missing_features.lbr_flags)
evsel->attr.branch_sample_type &= ~(PERF_SAMPLE_BRANCH_NO_FLAGS |
PERF_SAMPLE_BRANCH_NO_CYCLES);
- if (perf_missing_features.write_backward)
+ if (perf_missing_features.write_backward) {
+ if (evsel->overwrite)
+ return -EINVAL;
evsel->attr.write_backward = false;
+ }
retry_sample_id:
if (perf_missing_features.sample_id_all)
evsel->attr.sample_id_all = 0;
@@ -1453,12 +1456,6 @@ retry_open:
err = -EINVAL;
goto out_close;
}
-
- if (evsel->overwrite &&
- perf_missing_features.write_backward) {
- err = -EINVAL;
- goto out_close;
- }
}
}
@@ -1496,7 +1493,10 @@ try_fallback:
* Must probe features in the order they were added to the
* perf_event_attr interface.
*/
- if (!perf_missing_features.clockid_wrong && evsel->attr.use_clockid) {
+ if (!perf_missing_features.write_backward && evsel->attr.write_backward) {
+ perf_missing_features.write_backward = true;
+ goto fallback_missing_features;
+ } else if (!perf_missing_features.clockid_wrong && evsel->attr.use_clockid) {
perf_missing_features.clockid_wrong = true;
goto fallback_missing_features;
} else if (!perf_missing_features.clockid && evsel->attr.use_clockid) {
@@ -1521,12 +1521,7 @@ try_fallback:
PERF_SAMPLE_BRANCH_NO_FLAGS))) {
perf_missing_features.lbr_flags = true;
goto fallback_missing_features;
- } else if (!perf_missing_features.write_backward &&
- evsel->attr.write_backward) {
- perf_missing_features.write_backward = true;
- goto fallback_missing_features;
}
-
out_close:
do {
while (--thread >= 0) {
@@ -2409,6 +2404,8 @@ int perf_evsel__open_strerror(struct perf_evsel *evsel, struct target *target,
"We found oprofile daemon running, please stop it and try again.");
break;
case EINVAL:
+ if (evsel->overwrite && perf_missing_features.write_backward)
+ return scnprintf(msg, size, "Reading from overwrite event is not supported by this kernel.");
if (perf_missing_features.clockid)
return scnprintf(msg, size, "clockid feature not supported.");
if (perf_missing_features.clockid_wrong)
diff --git a/tools/perf/util/hist.c b/tools/perf/util/hist.c
index 2515cfdb7365..d2647b1d82c0 100644
--- a/tools/perf/util/hist.c
+++ b/tools/perf/util/hist.c
@@ -531,13 +531,13 @@ out:
return he;
}
-struct hist_entry *__hists__add_entry(struct hists *hists,
- struct addr_location *al,
- struct symbol *sym_parent,
- struct branch_info *bi,
- struct mem_info *mi,
- struct perf_sample *sample,
- bool sample_self)
+struct hist_entry *hists__add_entry(struct hists *hists,
+ struct addr_location *al,
+ struct symbol *sym_parent,
+ struct branch_info *bi,
+ struct mem_info *mi,
+ struct perf_sample *sample,
+ bool sample_self)
{
struct hist_entry entry = {
.thread = al->thread,
@@ -622,8 +622,8 @@ iter_add_single_mem_entry(struct hist_entry_iter *iter, struct addr_location *al
*/
sample->period = cost;
- he = __hists__add_entry(hists, al, iter->parent, NULL, mi,
- sample, true);
+ he = hists__add_entry(hists, al, iter->parent, NULL, mi,
+ sample, true);
if (!he)
return -ENOMEM;
@@ -727,8 +727,8 @@ iter_add_next_branch_entry(struct hist_entry_iter *iter, struct addr_location *a
sample->period = 1;
sample->weight = bi->flags.cycles ? bi->flags.cycles : 1;
- he = __hists__add_entry(hists, al, iter->parent, &bi[i], NULL,
- sample, true);
+ he = hists__add_entry(hists, al, iter->parent, &bi[i], NULL,
+ sample, true);
if (he == NULL)
return -ENOMEM;
@@ -764,8 +764,8 @@ iter_add_single_normal_entry(struct hist_entry_iter *iter, struct addr_location
struct perf_sample *sample = iter->sample;
struct hist_entry *he;
- he = __hists__add_entry(evsel__hists(evsel), al, iter->parent, NULL, NULL,
- sample, true);
+ he = hists__add_entry(evsel__hists(evsel), al, iter->parent, NULL, NULL,
+ sample, true);
if (he == NULL)
return -ENOMEM;
@@ -825,8 +825,8 @@ iter_add_single_cumulative_entry(struct hist_entry_iter *iter,
struct hist_entry *he;
int err = 0;
- he = __hists__add_entry(hists, al, iter->parent, NULL, NULL,
- sample, true);
+ he = hists__add_entry(hists, al, iter->parent, NULL, NULL,
+ sample, true);
if (he == NULL)
return -ENOMEM;
@@ -900,8 +900,8 @@ iter_add_next_cumulative_entry(struct hist_entry_iter *iter,
}
}
- he = __hists__add_entry(evsel__hists(evsel), al, iter->parent, NULL, NULL,
- sample, false);
+ he = hists__add_entry(evsel__hists(evsel), al, iter->parent, NULL, NULL,
+ sample, false);
if (he == NULL)
return -ENOMEM;
diff --git a/tools/perf/util/hist.h b/tools/perf/util/hist.h
index a19112872ff9..0a03e08be503 100644
--- a/tools/perf/util/hist.h
+++ b/tools/perf/util/hist.h
@@ -120,13 +120,13 @@ extern const struct hist_iter_ops hist_iter_branch;
extern const struct hist_iter_ops hist_iter_mem;
extern const struct hist_iter_ops hist_iter_cumulative;
-struct hist_entry *__hists__add_entry(struct hists *hists,
- struct addr_location *al,
- struct symbol *parent,
- struct branch_info *bi,
- struct mem_info *mi,
- struct perf_sample *sample,
- bool sample_self);
+struct hist_entry *hists__add_entry(struct hists *hists,
+ struct addr_location *al,
+ struct symbol *parent,
+ struct branch_info *bi,
+ struct mem_info *mi,
+ struct perf_sample *sample,
+ bool sample_self);
int hist_entry_iter__add(struct hist_entry_iter *iter, struct addr_location *al,
int max_stack_depth, void *arg);
diff --git a/tools/perf/util/llvm-utils.c b/tools/perf/util/llvm-utils.c
index 33071d6159bc..878a566763c3 100644
--- a/tools/perf/util/llvm-utils.c
+++ b/tools/perf/util/llvm-utils.c
@@ -42,6 +42,8 @@ int perf_llvm_config(const char *var, const char *value)
llvm_param.kbuild_dir = strdup(value);
else if (!strcmp(var, "kbuild-opts"))
llvm_param.kbuild_opts = strdup(value);
+ else if (!strcmp(var, "dump-obj"))
+ llvm_param.dump_obj = !!perf_config_bool(var, value);
else
return -1;
llvm_param.user_set_param = true;
@@ -326,6 +328,42 @@ get_kbuild_opts(char **kbuild_dir, char **kbuild_include_opts)
pr_debug("include option is set to %s\n", *kbuild_include_opts);
}
+static void
+dump_obj(const char *path, void *obj_buf, size_t size)
+{
+ char *obj_path = strdup(path);
+ FILE *fp;
+ char *p;
+
+ if (!obj_path) {
+ pr_warning("WARNING: No enough memory, skip object dumping\n");
+ return;
+ }
+
+ p = strrchr(obj_path, '.');
+ if (!p || (strcmp(p, ".c") != 0)) {
+ pr_warning("WARNING: invalid llvm source path: '%s', skip object dumping\n",
+ obj_path);
+ goto out;
+ }
+
+ p[1] = 'o';
+ fp = fopen(obj_path, "wb");
+ if (!fp) {
+ pr_warning("WARNING: failed to open '%s': %s, skip object dumping\n",
+ obj_path, strerror(errno));
+ goto out;
+ }
+
+ pr_info("LLVM: dumping %s\n", obj_path);
+ if (fwrite(obj_buf, size, 1, fp) != 1)
+ pr_warning("WARNING: failed to write to file '%s': %s, skip object dumping\n",
+ obj_path, strerror(errno));
+ fclose(fp);
+out:
+ free(obj_path);
+}
+
int llvm__compile_bpf(const char *path, void **p_obj_buf,
size_t *p_obj_buf_sz)
{
@@ -411,6 +449,10 @@ int llvm__compile_bpf(const char *path, void **p_obj_buf,
free(kbuild_dir);
free(kbuild_include_opts);
+
+ if (llvm_param.dump_obj)
+ dump_obj(path, obj_buf, obj_buf_sz);
+
if (!p_obj_buf)
free(obj_buf);
else
diff --git a/tools/perf/util/llvm-utils.h b/tools/perf/util/llvm-utils.h
index 23b9a743fe72..9f501cef06a1 100644
--- a/tools/perf/util/llvm-utils.h
+++ b/tools/perf/util/llvm-utils.h
@@ -30,6 +30,11 @@ struct llvm_param {
*/
const char *kbuild_opts;
/*
+ * Default is false. If set to true, write compiling result
+ * to object file.
+ */
+ bool dump_obj;
+ /*
* Default is false. If one of the above fields is set by user
* explicitly then user_set_llvm is set to true. This is used
* for perf test. If user doesn't set anything in .perfconfig
diff --git a/tools/perf/util/path.c b/tools/perf/util/path.c
index 3bf6bf82ff2d..cff8bf0f87e8 100644
--- a/tools/perf/util/path.c
+++ b/tools/perf/util/path.c
@@ -14,14 +14,8 @@
static char bad_path[] = "/bad-path/";
/*
- * Two hacks:
+ * One hack:
*/
-
-static const char *get_perf_dir(void)
-{
- return ".";
-}
-
static char *get_pathname(void)
{
static char pathname_array[4][PATH_MAX];
@@ -54,60 +48,3 @@ char *mkpath(const char *fmt, ...)
return bad_path;
return cleanup_path(pathname);
}
-
-char *perf_path(const char *fmt, ...)
-{
- const char *perf_dir = get_perf_dir();
- char *pathname = get_pathname();
- va_list args;
- unsigned len;
-
- len = strlen(perf_dir);
- if (len > PATH_MAX-100)
- return bad_path;
- memcpy(pathname, perf_dir, len);
- if (len && perf_dir[len-1] != '/')
- pathname[len++] = '/';
- va_start(args, fmt);
- len += vsnprintf(pathname + len, PATH_MAX - len, fmt, args);
- va_end(args);
- if (len >= PATH_MAX)
- return bad_path;
- return cleanup_path(pathname);
-}
-
-/* strip arbitrary amount of directory separators at end of path */
-static inline int chomp_trailing_dir_sep(const char *path, int len)
-{
- while (len && is_dir_sep(path[len - 1]))
- len--;
- return len;
-}
-
-/*
- * If path ends with suffix (complete path components), returns the
- * part before suffix (sans trailing directory separators).
- * Otherwise returns NULL.
- */
-char *strip_path_suffix(const char *path, const char *suffix)
-{
- int path_len = strlen(path), suffix_len = strlen(suffix);
-
- while (suffix_len) {
- if (!path_len)
- return NULL;
-
- if (is_dir_sep(path[path_len - 1])) {
- if (!is_dir_sep(suffix[suffix_len - 1]))
- return NULL;
- path_len = chomp_trailing_dir_sep(path, path_len);
- suffix_len = chomp_trailing_dir_sep(suffix, suffix_len);
- }
- else if (path[--path_len] != suffix[--suffix_len])
- return NULL;
- }
-
- if (path_len && !is_dir_sep(path[path_len - 1]))
- return NULL;
- return strndup(path, chomp_trailing_dir_sep(path, path_len));
-}
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