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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: cf8e55fe50 ("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>
This commit is contained in:
Dapeng Mi 2025-09-19 10:16:59 +08:00 committed by Arnaldo Carvalho de Melo
parent c1afca106e
commit cbeb3d4784
1 changed files with 33 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

34
tools/perf/builtin-kvm.c
View File

@ -2084,6 +2084,38 @@ __cmd_buildid_list(const char *file_name, int argc, const char **argv)
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)