diff options
| author | Dapeng Mi <dapeng1.mi@linux.intel.com> | 2025-09-19 10:16:59 +0800 |
|---|---|---|
| committer | Arnaldo Carvalho de Melo <acme@redhat.com> | 2025-10-02 15:31:55 -0300 |
| commit | cbeb3d4784d489d7e494313fb2ec4f6a7ae4609d (patch) | |
| tree | 04e9191a9477468d6f7ff0345f6c7f14315aed94 /tools/perf | |
| parent | c1afca106e16fbbf9508b3770e6ab1c2f7993ea1 (diff) | |
perf tools kvm: Use "cycles" to sample guest for "kvm top" on Intel
As same reason with previous patch, use "cyles" instead of "cycles:P"
event by default to sample guest for "perf kvm top" command on Intel
platforms.
Fixes: cf8e55fe50df0c02 ("KVM: x86/pmu: Expose CPUIDs feature bits PDCM, DS, DTES64")
Reported-by: Kevin Tian <kevin.tian@intel.com>
Signed-off-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Acked-by: Namhyung Kim <namhyung@kernel.org>
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Alexander Shishkin <alexander.shishkin@linux.intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Kan Liang <kan.liang@linux.intel.com>
Cc: Like Xu <likexu@tencent.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
Diffstat (limited to 'tools/perf')
| -rw-r--r-- | tools/perf/builtin-kvm.c | 34 |
1 files changed, 33 insertions, 1 deletions
diff --git a/tools/perf/builtin-kvm.c b/tools/perf/builtin-kvm.c index c0d62add4996..f0f285763f19 100644 --- a/tools/perf/builtin-kvm.c +++ b/tools/perf/builtin-kvm.c @@ -2084,6 +2084,38 @@ EXIT: return ret; } +static int __cmd_top(int argc, const char **argv) +{ + int rec_argc, i = 0, ret; + const char **rec_argv; + + /* + * kvm_add_default_arch_event() may add 2 extra options, so + * allocate 2 more pointers in adavance. + */ + rec_argc = argc + 2; + rec_argv = calloc(rec_argc + 1, sizeof(char *)); + if (!rec_argv) + return -ENOMEM; + + for (i = 0; i < argc; i++) + rec_argv[i] = STRDUP_FAIL_EXIT(argv[i]); + + BUG_ON(i != argc); + + ret = kvm_add_default_arch_event(&i, rec_argv); + if (ret) + goto EXIT; + + ret = cmd_top(i, rec_argv); + +EXIT: + for (i = 0; i < rec_argc; i++) + free((void *)rec_argv[i]); + free(rec_argv); + return ret; +} + int cmd_kvm(int argc, const char **argv) { const char *file_name = NULL; @@ -2144,7 +2176,7 @@ int cmd_kvm(int argc, const char **argv) else if (strlen(argv[0]) > 2 && strstarts("diff", argv[0])) return cmd_diff(argc, argv); else if (!strcmp(argv[0], "top")) - return cmd_top(argc, argv); + return __cmd_top(argc, argv); else if (strlen(argv[0]) > 2 && strstarts("buildid-list", argv[0])) return __cmd_buildid_list(file_name, argc, argv); #if defined(HAVE_KVM_STAT_SUPPORT) && defined(HAVE_LIBTRACEEVENT) |