diff options
author | Wei Li <liwei391@huawei.com> | 2022-03-25 17:20:32 +0800 |
---|---|---|
committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2022-03-26 10:55:57 -0300 |
commit | ae0f4eb34fc3014f7eba78fab90a0e98e441a4cd (patch) | |
tree | c768d42297a81776eefd3f924631cd4f0e3bb176 /tools/perf/builtin-kvm.c | |
parent | c2eeac985657f61543e6c5a333b94f3bd18e6b9d (diff) | |
download | linux-stable-ae0f4eb34fc3014f7eba78fab90a0e98e441a4cd.tar.gz linux-stable-ae0f4eb34fc3014f7eba78fab90a0e98e441a4cd.tar.bz2 linux-stable-ae0f4eb34fc3014f7eba78fab90a0e98e441a4cd.zip |
perf tools: Enhance the matching of sub-commands abbreviations
We support short command 'rec*' for 'record' and 'rep*' for 'report' in
lots of sub-commands, but the matching is not quite strict currnetly.
It may be puzzling sometime, like we mis-type a 'recport' to report but
it will perform 'record' in fact without any message.
To fix this, add a check to ensure that the short cmd is valid prefix
of the real command.
Committer testing:
[root@quaco ~]# perf c2c re sleep 1
Usage: perf c2c {record|report}
-v, --verbose be more verbose (show counter open errors, etc)
# perf c2c rec sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.038 MB perf.data (16 samples) ]
# perf c2c recport sleep 1
Usage: perf c2c {record|report}
-v, --verbose be more verbose (show counter open errors, etc)
# perf c2c record sleep 1
[ perf record: Woken up 1 times to write data ]
[ perf record: Captured and wrote 0.038 MB perf.data (15 samples) ]
# perf c2c records sleep 1
Usage: perf c2c {record|report}
-v, --verbose be more verbose (show counter open errors, etc)
#
Signed-off-by: Wei Li <liwei391@huawei.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Hanjun Guo <guohanjun@huawei.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Mark Rutland <mark.rutland@arm.com>
Cc: Namhyung Kim <namhyung@kernel.org>
Cc: Rui Xiang <rui.xiang@huawei.com>
Link: http://lore.kernel.org/lkml/20220325092032.2956161-1-liwei391@huawei.com
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf/builtin-kvm.c')
-rw-r--r-- | tools/perf/builtin-kvm.c | 9 |
1 files changed, 5 insertions, 4 deletions
diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index b23a1f3eaeda..2fa687f73e5e 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -24,6 +24,7 @@ #include "util/ordered-events.h" #include "util/kvm-stat.h" #include "ui/ui.h" +#include "util/string2.h" #include <sys/prctl.h> #ifdef HAVE_TIMERFD_SUPPORT @@ -1500,10 +1501,10 @@ static int kvm_cmd_stat(const char *file_name, int argc, const char **argv) goto perf_stat; } - if (!strncmp(argv[1], "rec", 3)) + if (strlen(argv[1]) > 2 && strstarts("record", argv[1])) return kvm_events_record(&kvm, argc - 1, argv + 1); - if (!strncmp(argv[1], "rep", 3)) + if (strlen(argv[1]) > 2 && strstarts("report", argv[1])) return kvm_events_report(&kvm, argc - 1 , argv + 1); #ifdef HAVE_TIMERFD_SUPPORT @@ -1631,9 +1632,9 @@ int cmd_kvm(int argc, const char **argv) } } - if (!strncmp(argv[0], "rec", 3)) + if (strlen(argv[0]) > 2 && strstarts("record", argv[0])) return __cmd_record(file_name, argc, argv); - else if (!strncmp(argv[0], "rep", 3)) + else if (strlen(argv[0]) > 2 && strstarts("report", argv[0])) return __cmd_report(file_name, argc, argv); else if (!strncmp(argv[0], "diff", 4)) return cmd_diff(argc, argv); |