linux-kernel - [PATCH 5.10 074/290] perf report: Fix -F for branch & mem modes

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Message-Id: <20210315135544.414893543@linuxfoundation.org>
Date:   Mon, 15 Mar 2021 14:52:47 +0100
From:   gregkh@...uxfoundation.org
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Athira Jajeev <atrajeev@...ux.vnet.ibm.com>,
        Ravi Bangoria <ravi.bangoria@...ux.ibm.com>,
        Arnaldo Carvalho de Melo <acme@...hat.com>,
        Jiri Olsa <jolsa@...hat.com>,
        Kan Liang <kan.liang@...ux.intel.com>,
        Namhyung Kim <namhyung@...nel.org>
Subject: [PATCH 5.10 074/290] perf report: Fix -F for branch & mem modes

From: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

From: Ravi Bangoria <ravi.bangoria@...ux.ibm.com>

commit 6740a4e70e5d1b9d8e7fe41fd46dd5656d65dadf upstream.

perf report fails to add valid additional fields with -F when
used with branch or mem modes. Fix it.

Before patch:

  $ perf record -b
  $ perf report -b -F +srcline_from --stdio
  Error:
  Invalid --fields key: `srcline_from'

After patch:

  $ perf report -b -F +srcline_from --stdio
  # Samples: 8K of event 'cycles'
  # Event count (approx.): 8784
  ...

Committer notes:

There was an inversion: when looking at branch stack dimensions (keys)
it was checking if the sort mode was 'mem', not 'branch'.

Fixes: aa6b3c99236b ("perf report: Make -F more strict like -s")
Reported-by: Athira Jajeev <atrajeev@...ux.vnet.ibm.com>
Signed-off-by: Ravi Bangoria <ravi.bangoria@...ux.ibm.com>
Reviewed-by: Athira Jajeev <atrajeev@...ux.vnet.ibm.com>
Tested-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Tested-by: Athira Jajeev <atrajeev@...ux.vnet.ibm.com>
Cc: Jiri Olsa <jolsa@...hat.com>
Cc: Kan Liang <kan.liang@...ux.intel.com>
Cc: Namhyung Kim <namhyung@...nel.org>
Link: http://lore.kernel.org/lkml/20210304062958.85465-1-ravi.bangoria@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>
---
 tools/perf/util/sort.c |    4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

--- a/tools/perf/util/sort.c
+++ b/tools/perf/util/sort.c
@@ -3003,7 +3003,7 @@ int output_field_add(struct perf_hpp_lis
 		if (strncasecmp(tok, sd->name, strlen(tok)))
 			continue;
 
-		if (sort__mode != SORT_MODE__MEMORY)
+		if (sort__mode != SORT_MODE__BRANCH)
 			return -EINVAL;
 
 		return __sort_dimension__add_output(list, sd);
@@ -3015,7 +3015,7 @@ int output_field_add(struct perf_hpp_lis
 		if (strncasecmp(tok, sd->name, strlen(tok)))
 			continue;
 
-		if (sort__mode != SORT_MODE__BRANCH)
+		if (sort__mode != SORT_MODE__MEMORY)
 			return -EINVAL;
 
 		return __sort_dimension__add_output(list, sd);