linux-kernel - [tip:perf/core] perf inject: Enable COMPRESSED record decompression

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Message-ID: <tip-371a3378d83a755add84b2dca730a3a641002f3a@git.kernel.org>
Date:   Sat, 18 May 2019 02:25:53 -0700
From:   tip-bot for Alexey Budankov <tipbot@...or.com>
To:     linux-tip-commits@...r.kernel.org
Cc:     jolsa@...nel.org, peterz@...radead.org, acme@...hat.com,
        hpa@...or.com, ak@...ux.intel.com, mingo@...nel.org,
        alexander.shishkin@...ux.intel.com, linux-kernel@...r.kernel.org,
        alexey.budankov@...ux.intel.com, tglx@...utronix.de,
        namhyung@...nel.org
Subject: [tip:perf/core] perf inject: Enable COMPRESSED record decompression

Commit-ID:  371a3378d83a755add84b2dca730a3a641002f3a
Gitweb:     https://git.kernel.org/tip/371a3378d83a755add84b2dca730a3a641002f3a
Author:     Alexey Budankov <alexey.budankov@...ux.intel.com>
AuthorDate: Mon, 18 Mar 2019 20:45:44 +0300
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
CommitDate: Wed, 15 May 2019 16:36:49 -0300

perf inject: Enable COMPRESSED record decompression

Initialized decompression part of Zstd based API so COMPRESSED records
would be decompressed into the resulting output data file.

Signed-off-by: Alexey Budankov <alexey.budankov@...ux.intel.com>
Reviewed-by: Jiri Olsa <jolsa@...nel.org>
Cc: Alexander Shishkin <alexander.shishkin@...ux.intel.com>
Cc: Andi Kleen <ak@...ux.intel.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Link: http://lkml.kernel.org/r/c27d7500-ecdd-3569-cab5-8f70bbed5ea4@linux.intel.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 tools/perf/builtin-inject.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tools/perf/builtin-inject.c b/tools/perf/builtin-inject.c
index 24086b7f1b14..8e0e06d3edfc 100644
--- a/tools/perf/builtin-inject.c
+++ b/tools/perf/builtin-inject.c
@@ -837,6 +837,9 @@ int cmd_inject(int argc, const char **argv)
 	if (inject.session == NULL)
 		return -1;
 
+	if (zstd_init(&(inject.session->zstd_data), 0) < 0)
+		pr_warning("Decompression initialization failed.\n");
+
 	if (inject.build_ids) {
 		/*
 		 * to make sure the mmap records are ordered correctly
@@ -867,6 +870,7 @@ int cmd_inject(int argc, const char **argv)
 	ret = __cmd_inject(&inject);
 
 out_delete:
+	zstd_fini(&(inject.session->zstd_data));
 	perf_session__delete(inject.session);
 	return ret;
 }