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| author | Thomas Richter <tmricht@linux.vnet.ibm.com> | 2018-02-13 16:14:18 +0100 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2018-02-16 15:16:57 -0300 |
| commit | 4cb7d3ecfca90684ad00f893c34a2028fcc5f764 (patch) | |
| tree | 40f23d7dd8ecb09616d148cce48c031ed4c2f4a8 /tools/perf/arch | |
| parent | c59124fa59757fadc80ad881056a21f98c71b146 (diff) | |
| download | linux-4cb7d3ecfca90684ad00f893c34a2028fcc5f764.tar.bz2 | |
perf cpuid: Introduce a platform specific cpuid compare function
The function get_cpuid_str() is called by perf_pmu__getcpuid() and on
s390 returns a complete description of the CPU and its capabilities,
which is a comma separated list.
To map the CPU type with the value defined in the
pmu-events/arch/s390/mapfile.csv, introduce an architecture specific
cpuid compare function named strcmp_cpuid_str()
The currently used regex algorithm is defined as the weak default and
will be used if no platform specific one is defined. This matches the
current behavior.
Signed-off-by: Thomas Richter <tmricht@linux.vnet.ibm.com>
Reviewed-by: Hendrik Brueckner <brueckner@linux.vnet.ibm.com>
Cc: Heiko Carstens <heiko.carstens@de.ibm.com>
Cc: Martin Schwidefsky <schwidefsky@de.ibm.com>
Link: http://lkml.kernel.org/r/20180213151419.80737-3-tmricht@linux.vnet.ibm.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/arch')
| -rw-r--r-- | tools/perf/arch/s390/util/header.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/tools/perf/arch/s390/util/header.c b/tools/perf/arch/s390/util/header.c index a78064c25ced..231294b80dc4 100644 --- a/tools/perf/arch/s390/util/header.c +++ b/tools/perf/arch/s390/util/header.c @@ -146,3 +146,21 @@ 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)); +} |