linux-kernel - [PATCH v15 18/19] perf, tools: Handle header line in mapfile

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Message-Id: <1433921123-25327-19-git-send-email-sukadev@linux.vnet.ibm.com>
Date:	Wed, 10 Jun 2015 00:25:22 -0700
From:	Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
To:	mingo@...hat.com, ak@...ux.intel.com,
	Michael Ellerman <mpe@...erman.id.au>,
	Jiri Olsa <jolsa@...hat.com>,
	Arnaldo Carvalho de Melo <acme@...nel.org>
Cc:	namhyung@...nel.org, maddy@...ux.vnet.ibm.com,
	linuxppc-dev@...ts.ozlabs.org, <linux-kernel@...r.kernel.org>
Subject: [PATCH v15 18/19] perf, tools: Handle header line in mapfile

From: Andi Kleen <ak@...ux.intel.com>

To work with existing mapfiles, assume that the first line in
'mapfile.csv' is a header line and skip over it.

Signed-off-by: Andi Kleen <ak@...ux.intel.com>
Signed-off-by: Sukadev Bhattiprolu <sukadev@...ux.vnet.ibm.com>
Acked-by: Jiri Olsa <jolsa@...hat.com>
---

Changelog[v2]
	All architectures may not use the "Family" to identify. So,
	assume first line is header.
---
 tools/perf/pmu-events/jevents.c | 9 +++++++--
 1 file changed, 7 insertions(+), 2 deletions(-)

diff --git a/tools/perf/pmu-events/jevents.c b/tools/perf/pmu-events/jevents.c
index ea3474b..7347cca 100644
--- a/tools/perf/pmu-events/jevents.c
+++ b/tools/perf/pmu-events/jevents.c
@@ -462,7 +462,12 @@ static int process_mapfile(FILE *outfp, char *fpath)
 
 	print_mapping_table_prefix(outfp);
 
-	line_num = 0;
+	/* Skip first line (header) */
+	p = fgets(line, n, mapfp);
+	if (!p)
+		goto out;
+
+	line_num = 1;
 	while (1) {
 		char *cpuid, *version, *type, *fname;
 
@@ -506,8 +511,8 @@ static int process_mapfile(FILE *outfp, char *fpath)
 		fprintf(outfp, "},\n");
 	}
 
+out:
 	print_mapping_table_suffix(outfp);
-
 	return 0;
 }
 
-- 
1.8.3.1

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