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Subject[PATCH 09/17] perf tools: Consolidate management of default sort orders
Date
The perf uses different default sort orders for different use-cases,
and this was scattered throughout the code. Add get_default_sort_
order() function to handle this and change initial value of sort_order
to NULL to distinguish it from user-given one.

Cc: Stephane Eranian <eranian@google.com>
Signed-off-by: Namhyung Kim <namhyung@kernel.org>
---
tools/perf/builtin-report.c | 18 ------------------
tools/perf/builtin-top.c | 3 +--
tools/perf/util/sort.c | 25 +++++++++++++++++++++++--
tools/perf/util/sort.h | 1 +
4 files changed, 25 insertions(+), 22 deletions(-)

diff --git a/tools/perf/builtin-report.c b/tools/perf/builtin-report.c
index 76e2bb6cf571..26de5c14369b 100644
--- a/tools/perf/builtin-report.c
+++ b/tools/perf/builtin-report.c
@@ -809,30 +809,12 @@ repeat:
if (branch_mode == -1 && has_br_stack)
sort__mode = SORT_MODE__BRANCH;

- /* sort__mode could be NORMAL if --no-branch-stack */
- if (sort__mode == SORT_MODE__BRANCH) {
- /*
- * if no sort_order is provided, then specify
- * branch-mode specific order
- */
- if (sort_order == default_sort_order)
- sort_order = "comm,dso_from,symbol_from,"
- "dso_to,symbol_to";
-
- }
if (report.mem_mode) {
if (sort__mode == SORT_MODE__BRANCH) {
pr_err("branch and mem mode incompatible\n");
goto error;
}
sort__mode = SORT_MODE__MEMORY;
-
- /*
- * if no sort_order is provided, then specify
- * branch-mode specific order
- */
- if (sort_order == default_sort_order)
- sort_order = "local_weight,mem,sym,dso,symbol_daddr,dso_daddr,snoop,tlb,locked";
}

if (setup_sorting() < 0) {
diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c
index 37d30460bada..bb2aa6645a7e 100644
--- a/tools/perf/builtin-top.c
+++ b/tools/perf/builtin-top.c
@@ -1137,8 +1137,7 @@ int cmd_top(int argc, const char **argv, const char *prefix __maybe_unused)
if (argc)
usage_with_options(top_usage, options);

- if (sort_order == default_sort_order)
- sort_order = "dso,symbol";
+ sort__mode = SORT_MODE__TOP;

if (setup_sorting() < 0) {
parse_options_usage(top_usage, options, "s", 1);
diff --git a/tools/perf/util/sort.c b/tools/perf/util/sort.c
index 916652af8304..2f83965ab2c0 100644
--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -8,7 +8,10 @@ regex_t parent_regex;
const char default_parent_pattern[] = "^sys_|^do_page_fault";
const char *parent_pattern = default_parent_pattern;
const char default_sort_order[] = "comm,dso,symbol";
-const char *sort_order = default_sort_order;
+const char default_branch_sort_order[] = "comm,dso_from,symbol_from,dso_to,symbol_to";
+const char default_mem_sort_order[] = "local_weight,mem,sym,dso,symbol_daddr,dso_daddr,snoop,tlb,locked";
+const char default_top_sort_order[] = "dso,symbol";
+const char *sort_order;
regex_t ignore_callees_regex;
int have_ignore_callees = 0;
int sort__need_collapse = 0;
@@ -1218,11 +1221,29 @@ int sort_dimension__add(const char *tok)
return -ESRCH;
}

+static const char *get_default_sort_order(void)
+{
+ const char *default_sort_orders[] = {
+ default_sort_order,
+ default_branch_sort_order,
+ default_mem_sort_order,
+ default_top_sort_order,
+ };
+
+ BUG_ON(sort__mode > ARRAY_SIZE(default_sort_orders));
+
+ return default_sort_orders[sort__mode];
+}
+
int setup_sorting(void)
{
- char *tmp, *tok, *str = strdup(sort_order);
+ char *tmp, *tok, *str;
int ret = 0;

+ if (sort_order == NULL)
+ sort_order = get_default_sort_order();
+
+ str = strdup(sort_order);
if (str == NULL) {
error("Not enough memory to setup sort keys");
return -ENOMEM;
diff --git a/tools/perf/util/sort.h b/tools/perf/util/sort.h
index 43e5ff42a609..35b53cc56feb 100644
--- a/tools/perf/util/sort.h
+++ b/tools/perf/util/sort.h
@@ -133,6 +133,7 @@ enum sort_mode {
SORT_MODE__NORMAL,
SORT_MODE__BRANCH,
SORT_MODE__MEMORY,
+ SORT_MODE__TOP,
};

enum sort_type {
--
1.9.2


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