linux-kernel - [PATCH] perf/script: remove extraneous newline in perf_sample__fprintf

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Date:   Sat, 18 Apr 2020 16:19:08 -0700
From:   Stephane Eranian <eranian@...gle.com>
To:     linux-kernel@...r.kernel.org
Cc:     peterz@...radead.org, mingo@...e.hu, acme@...hat.com,
        jolsa@...hat.com, irogers@...gle.com, ak@...ux.intel.com,
        kan.liang@...el.com
Subject: [PATCH] perf/script: remove extraneous newline in perf_sample__fprintf_regs()

When printing iregs, there was a double newline printed because
perf_sample__fprintf_regs() was printing its own and then at the
end of all fields, perf script was adding one.
This was causing blank line in the output:

Before:
$ perf script -Fip,iregs
           401b8d ABI:2    DX:0x100    SI:0x4a8340    DI:0x4a9340

           401b8d ABI:2    DX:0x100    SI:0x4a9340    DI:0x4a8340

           401b8d ABI:2    DX:0x100    SI:0x4a8340    DI:0x4a9340

           401b8d ABI:2    DX:0x100    SI:0x4a9340    DI:0x4a8340

After:
$ perf script -Fip,iregs
           401b8d ABI:2    DX:0x100    SI:0x4a8340    DI:0x4a9340
           401b8d ABI:2    DX:0x100    SI:0x4a9340    DI:0x4a8340
           401b8d ABI:2    DX:0x100    SI:0x4a8340    DI:0x4a9340

Signed-off-by: Stephane Eranian <eranian@...gle.com>
---
 tools/perf/builtin-script.c | 2 --
 1 file changed, 2 deletions(-)

diff --git a/tools/perf/builtin-script.c b/tools/perf/builtin-script.c
index 1f57a7ecdf3d0..0c0b6e807d06e 100644
--- a/tools/perf/builtin-script.c
+++ b/tools/perf/builtin-script.c
@@ -604,8 +604,6 @@ static int perf_sample__fprintf_regs(struct regs_dump *regs, uint64_t mask,
 		printed += fprintf(fp, "%5s:0x%"PRIx64" ", perf_reg_name(r), val);
 	}
 
-	fprintf(fp, "\n");
-
 	return printed;
 }
 
-- 
2.26.1.301.g55bc3eb7cb9-goog