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SubjectRe: [PATCH] perf report: Fix debug messages with --call-graph option
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Hi Jiri,

Thanks for the review. Agreed, the patch seems confused.

I'll add more details in the next version patch and resend it later.

Thanks,

Mengting Zhang


On 2017/9/22 17:18, Jiri Olsa wrote:
> On Fri, Sep 22, 2017 at 10:06:53AM +0800, zhangmengting wrote:
>> With --call-graph option, perf report can display call chains using
>> type, min percent threshold, optional print limit and order. And the
>> default call-graph parameter is 'graph,0.5,caller,function,percent'.
>>
>> Before this patch, 'perf report --call-graph' shows incorrect debug
>> messages as below:
>> [root@localhost perf]# ./perf report --call-graph
>> Invalid callchain mode: 0.5
>> Invalid callchain order: 0.5
>> Invalid callchain sort key: 0.5
>> Invalid callchain config key: 0.5
>> Invalid callchain mode: caller
>> Invalid callchain mode: function
>> Invalid callchain order: function
>> Invalid callchain mode: percent
>> Invalid callchain order: percent
>> Invalid callchain sort key: percent
> hum, could you please mention what was wrong with
> the code and why the change fixes them?
>
> looks like you just moved the warning out of the
> way of the report
>
> thanks,
> jirka
>
>> The patch fixes this issue.
>>
>> Signed-off-by: zhangmengting <zhangmengting@huawei.com>
>> ---
>> tools/perf/util/callchain.c | 35 +++++++++++++++++++++--------------
>> 1 file changed, 21 insertions(+), 14 deletions(-)
>>
>> diff --git a/tools/perf/util/callchain.c b/tools/perf/util/callchain.c
>> index 510b513..be09d77 100644
>> --- a/tools/perf/util/callchain.c
>> +++ b/tools/perf/util/callchain.c
>> @@ -65,8 +65,6 @@ static int parse_callchain_mode(const char *value)
>> callchain_param.mode = CHAIN_FOLDED;
>> return 0;
>> }
>> -
>> - pr_err("Invalid callchain mode: %s\n", value);
>> return -1;
>> }
>>
>> @@ -82,8 +80,6 @@ static int parse_callchain_order(const char *value)
>> callchain_param.order_set = true;
>> return 0;
>> }
>> -
>> - pr_err("Invalid callchain order: %s\n", value);
>> return -1;
>> }
>>
>> @@ -105,8 +101,6 @@ static int parse_callchain_sort_key(const char *value)
>> callchain_param.branch_callstack = 1;
>> return 0;
>> }
>> -
>> - pr_err("Invalid callchain sort key: %s\n", value);
>> return -1;
>> }
>>
>> @@ -124,8 +118,6 @@ static int parse_callchain_value(const char *value)
>> callchain_param.value = CCVAL_COUNT;
>> return 0;
>> }
>> -
>> - pr_err("Invalid callchain config key: %s\n", value);
>> return -1;
>> }
>>
>> @@ -319,12 +311,27 @@ int perf_callchain_config(const char *var, const char *value)
>>
>> return ret;
>> }
>> - if (!strcmp(var, "print-type"))
>> - return parse_callchain_mode(value);
>> - if (!strcmp(var, "order"))
>> - return parse_callchain_order(value);
>> - if (!strcmp(var, "sort-key"))
>> - return parse_callchain_sort_key(value);
>> + if (!strcmp(var, "print-type")){
>> + int ret;
>> + ret = parse_callchain_mode(value);
>> + if (ret == -1)
>> + pr_err("Invalid callchain mode: %s\n", value);
>> + return ret;
>> + }
>> + if (!strcmp(var, "order")){
>> + int ret;
>> + ret = parse_callchain_order(value);
>> + if (ret == -1)
>> + pr_err("Invalid callchain order: %s\n", value);
>> + return ret;
>> + }
>> + if (!strcmp(var, "sort-key")){
>> + int ret;
>> + ret = parse_callchain_sort_key(value);
>> + if (ret == -1)
>> + pr_err("Invalid callchain sort key: %s\n", value);
>> + return ret;
>> + }
>> if (!strcmp(var, "threshold")) {
>> callchain_param.min_percent = strtod(value, &endptr);
>> if (value == endptr) {
>> --
>> 1.7.12.4
>>
> --
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