[PATCH v2] perf list: Remove s390 specific strcmp_cpuid_cmp function

[PATCH v2] perf list: Remove s390 specific strcmp_cpuid_cmp function

[Thomas Richter]

Make the type field in pmu-events/arch/s390/mapfile.cvs
more generic to match the created cpuid string for s390.
The pattern also checks for the counter first version
number and counter second version number ([13]\.[1-5])
and the authorization field which follows. These numbers do
not exist in the cpuid identification string when perf
commands are executed on a z/VM environment (which does
not support CPU counter measurement facility).
CPUID string for LPAR:
   cpuid : IBM,3906,704,M03,3.5,002f
CPUID string for z/VM:
   cpuid : IBM,2964,702,N96

This allows the removal of s390 specific cpuid compare code
and uses the common compare function with its regular
expression matching algorithm.

Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com>
---
 tools/perf/arch/s390/util/header.c          | 18 ------------------
 tools/perf/pmu-events/arch/s390/mapfile.csv | 10 +++++-----
 tools/perf/util/pmu.c                       |  2 +-
 3 files changed, 6 insertions(+), 24 deletions(-)

diff --git a/tools/perf/arch/s390/util/header.c b/tools/perf/arch/s390/util/header.c
index a4c30f1c70be..163b92f33998 100644
--- a/tools/perf/arch/s390/util/header.c
+++ b/tools/perf/arch/s390/util/header.c
@@ -146,21 +146,3 @@ char *get_cpuid_str(struct perf_pmu *pmu __maybe_unused)
 		zfree(&buf);
 	return buf;
 }
-
-/*
- * Compare the cpuid string returned by get_cpuid() function
- * with the name generated by the jevents file read from
- * pmu-events/arch/s390/mapfile.csv.
- *
- * Parameter mapcpuid is the cpuid as stored in the
- * pmu-events/arch/s390/mapfile.csv. This is just the type number.
- * Parameter cpuid is the cpuid returned by function get_cpuid().
- */
-int strcmp_cpuid_str(const char *mapcpuid, const char *cpuid)
-{
-	char *cp = strchr(cpuid, ',');
-
-	if (cp == NULL)
-		return -1;
-	return strncmp(cp + 1, mapcpuid, strlen(mapcpuid));
-}
diff --git a/tools/perf/pmu-events/arch/s390/mapfile.csv b/tools/perf/pmu-events/arch/s390/mapfile.csv
index ca7682748a4b..af6386ba3df4 100644
--- a/tools/perf/pmu-events/arch/s390/mapfile.csv
+++ b/tools/perf/pmu-events/arch/s390/mapfile.csv
@@ -1,6 +1,6 @@
 Family-model,Version,Filename,EventType
-209[78],1,cf_z10,core
-281[78],1,cf_z196,core
-282[78],1,cf_zec12,core
-296[45],1,cf_z13,core
-3906,3,cf_z14,core
+^IBM.209[78].*[13]\.[1-5].[[:xdigit:]]+$,1,cf_z10,core
+^IBM.281[78].*[13]\.[1-5].[[:xdigit:]]+$,1,cf_z196,core
+^IBM.282[78].*[13]\.[1-5].[[:xdigit:]]+$,1,cf_zec12,core
+^IBM.296[45].*[13]\.[1-5].[[:xdigit:]]+$,1,cf_z13,core
+^IBM.390[67].*[13]\.[1-5].[[:xdigit:]]+$,3,cf_z14,core
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 8675ddf558c6..08e39197c77d 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -586,7 +586,7 @@ char * __weak get_cpuid_str(struct perf_pmu *pmu __maybe_unused)
  * cpuid string generated on this platform.
  * Otherwise return non-zero.
  */
-int __weak strcmp_cpuid_str(const char *mapcpuid, const char *cpuid)
+int strcmp_cpuid_str(const char *mapcpuid, const char *cpuid)
 {
 	regex_t re;
 	regmatch_t pmatch[1];
-- 
2.14.3

Re: [PATCH v2] perf list: Remove s390 specific strcmp_cpuid_cmp function

[Arnaldo Carvalho de Melo]

Em Mon, Apr 23, 2018 at 10:17:45AM +0200, Thomas Richter escreveu:
> Make the type field in pmu-events/arch/s390/mapfile.cvs
> more generic to match the created cpuid string for s390.
> The pattern also checks for the counter first version
> number and counter second version number ([13]\.[1-5])
> and the authorization field which follows. These numbers do
> not exist in the cpuid identification string when perf
> commands are executed on a z/VM environment (which does
> not support CPU counter measurement facility).
> CPUID string for LPAR:
>    cpuid : IBM,3906,704,M03,3.5,002f
> CPUID string for z/VM:
>    cpuid : IBM,2964,702,N96
> 
> This allows the removal of s390 specific cpuid compare code
> and uses the common compare function with its regular
> expression matching algorithm.

Thanks, applied.

- Arnaldo

[tip:perf/urgent] perf list: Remove s390 specific strcmp_cpuid_cmp function

[tip-bot for Thomas Richter]

Commit-ID:  ce04abfbd3ea545a8eb38a8b6a48fb6e7d139dcb
Gitweb:     https://git.kernel.org/tip/ce04abfbd3ea545a8eb38a8b6a48fb6e7d139dcb
Author:     Thomas Richter <tmricht@linux.ibm.com>
AuthorDate: Mon, 23 Apr 2018 10:17:45 +0200
Committer:  Arnaldo Carvalho de Melo <acme@redhat.com>
CommitDate: Mon, 23 Apr 2018 11:03:13 -0300

perf list: Remove s390 specific strcmp_cpuid_cmp function

Make the type field in pmu-events/arch/s390/mapfile.cvs more generic to
match the created cpuid string for s390.

The pattern also checks for the counter first version number and counter
second version number ([13]\.[1-5]) and the authorization field which
follows.

These numbers do not exist in the cpuid identification string when perf
commands are executed on a z/VM environment (which does not support CPU
counter measurement facility).

CPUID string for LPAR:
   cpuid : IBM,3906,704,M03,3.5,002f
CPUID string for z/VM:
   cpuid : IBM,2964,702,N96

This allows the removal of s390 specific cpuid compare code and uses the
common compare function with its regular expression matching algorithm.

Signed-off-by: Thomas Richter <tmricht@linux.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Link: http://lkml.kernel.org/r/20180423081745.3672-1-tmricht@linux.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
---
 tools/perf/arch/s390/util/header.c          | 18 ------------------
 tools/perf/pmu-events/arch/s390/mapfile.csv | 10 +++++-----
 tools/perf/util/pmu.c                       |  2 +-
 3 files changed, 6 insertions(+), 24 deletions(-)

diff --git a/tools/perf/arch/s390/util/header.c b/tools/perf/arch/s390/util/header.c
index a4c30f1c70be..163b92f33998 100644
--- a/tools/perf/arch/s390/util/header.c
+++ b/tools/perf/arch/s390/util/header.c
@@ -146,21 +146,3 @@ char *get_cpuid_str(struct perf_pmu *pmu __maybe_unused)
 		zfree(&buf);
 	return buf;
 }
-
-/*
- * Compare the cpuid string returned by get_cpuid() function
- * with the name generated by the jevents file read from
- * pmu-events/arch/s390/mapfile.csv.
- *
- * Parameter mapcpuid is the cpuid as stored in the
- * pmu-events/arch/s390/mapfile.csv. This is just the type number.
- * Parameter cpuid is the cpuid returned by function get_cpuid().
- */
-int strcmp_cpuid_str(const char *mapcpuid, const char *cpuid)
-{
-	char *cp = strchr(cpuid, ',');
-
-	if (cp == NULL)
-		return -1;
-	return strncmp(cp + 1, mapcpuid, strlen(mapcpuid));
-}
diff --git a/tools/perf/pmu-events/arch/s390/mapfile.csv b/tools/perf/pmu-events/arch/s390/mapfile.csv
index ca7682748a4b..78bcf7f8e206 100644
--- a/tools/perf/pmu-events/arch/s390/mapfile.csv
+++ b/tools/perf/pmu-events/arch/s390/mapfile.csv
@@ -1,6 +1,6 @@
 Family-model,Version,Filename,EventType
-209[78],1,cf_z10,core
-281[78],1,cf_z196,core
-282[78],1,cf_zec12,core
-296[45],1,cf_z13,core
-3906,3,cf_z14,core
+^IBM.209[78].*[13]\.[1-5].[[:xdigit:]]+$,1,cf_z10,core
+^IBM.281[78].*[13]\.[1-5].[[:xdigit:]]+$,1,cf_z196,core
+^IBM.282[78].*[13]\.[1-5].[[:xdigit:]]+$,1,cf_zec12,core
+^IBM.296[45].*[13]\.[1-5].[[:xdigit:]]+$,1,cf_z13,core
+^IBM.390[67].*[13]\.[1-5].[[:xdigit:]]+$,3,cf_z14,core
diff --git a/tools/perf/util/pmu.c b/tools/perf/util/pmu.c
index 61a5e5027338..af4bedf4cf98 100644
--- a/tools/perf/util/pmu.c
+++ b/tools/perf/util/pmu.c
@@ -586,7 +586,7 @@ char * __weak get_cpuid_str(struct perf_pmu *pmu __maybe_unused)
  * cpuid string generated on this platform.
  * Otherwise return non-zero.
  */
-int __weak strcmp_cpuid_str(const char *mapcpuid, const char *cpuid)
+int strcmp_cpuid_str(const char *mapcpuid, const char *cpuid)
 {
 	regex_t re;
 	regmatch_t pmatch[1];