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perf report: Fix invalid warning on callchain param

PATCH In review Namhyung Kim 2 participants 2 messages May 17, 2017 perf events

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Namhyung Kim

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#0 lore raw

PATCH 1/1 perf report: Fix invalid warning on callchain param

Currently "perf report -g srcline --stdio" shows two warnings like below:

Invalid callchain mode: srcline
Invalid callchain order: srcline

This is because it always tries to parse callchain mode, order, sort-key and value-type in a row. So even if 'srcline' is a valid sort-key, it shows invalid mode and order warnings.

Change it to show a warning only if failed to parse the given token as any of valid parameter. Also code under try_numbers requires the token to be a number, it's good to show the warning there.

Cc Milian Wolff <[email protected]>
Cc Frederic Weisbecker <[email protected]>
---
 tools/perf/util/callchain.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)
tools/perf/util/callchain.c +4 -4
index 9ab68682c6d0..89dbfd9e6d24 100644
@@ -15,6 +15,7 @@
 #include <stdbool.h>
 #include <errno.h>
 #include <math.h>
+#include <ctype.h>
 
 #include "asm/bug.h"
 
@@ -65,7 +66,6 @@ static int parse_callchain_mode(const char *value)
 		return 0;
 	}
 
-	pr_err("Invalid callchain mode: %s\n", value);
 	return -1;
 }
 
@@ -82,7 +82,6 @@ static int parse_callchain_order(const char *value)
 		return 0;
 	}
 
-	pr_err("Invalid callchain order: %s\n", value);
 	return -1;
 }
 
@@ -105,7 +104,6 @@ static int parse_callchain_sort_key(const char *value)
 		return 0;
 	}
 
-	pr_err("Invalid callchain sort key: %s\n", value);
 	return -1;
 }
 
@@ -124,7 +122,6 @@ static int parse_callchain_value(const char *value)
 		return 0;
 	}
 
-	pr_err("Invalid callchain config key: %s\n", value);
 	return -1;
 }
 
@@ -197,6 +194,9 @@ __parse_callchain_report_opt(const char *arg, bool allow_record_opt)
 		}
 
 try_numbers:
+		if (!isdigit(*tok))
+			pr_err("Invalid callchain param: %s\n", tok);
+
 		if (try_stack_size) {
 			unsigned long size = 0;
 
Signature · 1 line
2.12.2
#1 lore raw
Quoted 10 lines · CEST Namhyung Kim

Currently "perf report -g srcline --stdio" shows two warnings like below:

Invalid callchain mode: srcline
Invalid callchain order: srcline

This is because it always tries to parse callchain mode, order, sort-key and value-type in a row. So even if 'srcline' is a valid sort-key, it shows invalid mode and order warnings.

Quoted 7 lines

Change it to show a warning only if failed to parse the given token as any of valid parameter. Also code under try_numbers requires the token to be a number, it's good to show the warning there.

Cc Milian Wolff <[email protected]>
Cc Frederic Weisbecker <[email protected]>

Thank you, that annoyed me too. Tested and reviewed it, works fine - thanks!

Bye

Signature · 4 lines
Milian Wolff | [email protected] | Software Engineer
KDAB (Deutschland) GmbH&Co KG, a KDAB Group company
Tel: +49-30-521325470
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