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perf list: Fix the --no-desc option
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Currently, the --no-desc option in perf list isn't functioning as
intended.

This issue arises from the overwriting of struct option->desc with the
opposite value of struct option->long_desc. Consequently, whatever
parse_options() returns at struct option->desc gets overridden later,
rendering the --desc or --no-desc arguments ineffective.

To resolve this, set ->desc as true by default and allow parse_options()
to adjust it accordingly. This adjustment will fix the --no-desc
option while preserving the functionality of the other parameters.

Signed-off-by: Breno Leitao <[email protected]>
Reviewed-by: Ian Rogers <[email protected]>
Cc: [email protected]
Signed-off-by: Namhyung Kim <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
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leitao authored and namhyung committed May 28, 2024
1 parent cbd446b commit 265b711
Showing 1 changed file with 10 additions and 13 deletions.
23 changes: 10 additions & 13 deletions tools/perf/builtin-list.c
Original file line number Diff line number Diff line change
Expand Up @@ -162,7 +162,11 @@ static void default_print_event(void *ps, const char *pmu_name, const char *topi
} else
fputc('\n', fp);

if (desc && print_state->desc) {
if (long_desc && print_state->long_desc) {
fprintf(fp, "%*s", 8, "[");
wordwrap(fp, long_desc, 8, pager_get_columns(), 0);
fprintf(fp, "]\n");
} else if (desc && print_state->desc) {
char *desc_with_unit = NULL;
int desc_len = -1;

Expand All @@ -178,12 +182,6 @@ static void default_print_event(void *ps, const char *pmu_name, const char *topi
fprintf(fp, "]\n");
free(desc_with_unit);
}
long_desc = long_desc ?: desc;
if (long_desc && print_state->long_desc) {
fprintf(fp, "%*s", 8, "[");
wordwrap(fp, long_desc, 8, pager_get_columns(), 0);
fprintf(fp, "]\n");
}

if (print_state->detailed && encoding_desc) {
fprintf(fp, "%*s", 8, "");
Expand Down Expand Up @@ -256,15 +254,14 @@ static void default_print_metric(void *ps,
}
fprintf(fp, " %s\n", name);

if (desc && print_state->desc) {
fprintf(fp, "%*s", 8, "[");
wordwrap(fp, desc, 8, pager_get_columns(), 0);
fprintf(fp, "]\n");
}
if (long_desc && print_state->long_desc) {
fprintf(fp, "%*s", 8, "[");
wordwrap(fp, long_desc, 8, pager_get_columns(), 0);
fprintf(fp, "]\n");
} else if (desc && print_state->desc) {
fprintf(fp, "%*s", 8, "[");
wordwrap(fp, desc, 8, pager_get_columns(), 0);
fprintf(fp, "]\n");
}
if (expr && print_state->detailed) {
fprintf(fp, "%*s", 8, "[");
Expand Down Expand Up @@ -507,6 +504,7 @@ int cmd_list(int argc, const char **argv)
int i, ret = 0;
struct print_state default_ps = {
.fp = stdout,
.desc = true,
};
struct print_state json_ps = {
.fp = stdout,
Expand Down Expand Up @@ -579,7 +577,6 @@ int cmd_list(int argc, const char **argv)
};
ps = &json_ps;
} else {
default_ps.desc = !default_ps.long_desc;
default_ps.last_topic = strdup("");
assert(default_ps.last_topic);
default_ps.visited_metrics = strlist__new(NULL, NULL);
Expand Down

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