diff options
Diffstat (limited to 'tools/perf/arch/x86/util/intel-pt.c')
| -rw-r--r-- | tools/perf/arch/x86/util/intel-pt.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/tools/perf/arch/x86/util/intel-pt.c b/tools/perf/arch/x86/util/intel-pt.c index 6de7e2d21075..4b710e875953 100644 --- a/tools/perf/arch/x86/util/intel-pt.c +++ b/tools/perf/arch/x86/util/intel-pt.c @@ -32,6 +32,7 @@ #include "../../../util/tsc.h" #include <internal/lib.h> // page_size #include "../../../util/intel-pt.h" +#include <api/fs/fs.h> #define KiB(x) ((x) * 1024) #define MiB(x) ((x) * 1024 * 1024) @@ -428,6 +429,16 @@ static int intel_pt_track_switches(struct evlist *evlist) } #endif +static bool intel_pt_exclude_guest(void) +{ + int pt_mode; + + if (sysfs__read_int("module/kvm_intel/parameters/pt_mode", &pt_mode)) + pt_mode = 0; + + return pt_mode == 1; +} + static void intel_pt_valid_str(char *str, size_t len, u64 valid) { unsigned int val, last = 0, state = 1; @@ -620,6 +631,7 @@ static int intel_pt_recording_options(struct auxtrace_record *itr, } evsel->core.attr.freq = 0; evsel->core.attr.sample_period = 1; + evsel->core.attr.exclude_guest = intel_pt_exclude_guest(); evsel->no_aux_samples = true; evsel->needs_auxtrace_mmap = true; intel_pt_evsel = evsel; @@ -758,7 +770,8 @@ static int intel_pt_recording_options(struct auxtrace_record *itr, } if (!opts->auxtrace_snapshot_mode && !opts->auxtrace_sample_mode) { - u32 aux_watermark = opts->auxtrace_mmap_pages * page_size / 4; + size_t aw = opts->auxtrace_mmap_pages * (size_t)page_size / 4; + u32 aux_watermark = aw > UINT_MAX ? UINT_MAX : aw; intel_pt_evsel->core.attr.aux_watermark = aux_watermark; } |