diff options
| -rw-r--r-- | tools/perf/Documentation/perf-record.txt | 11 | ||||
| -rw-r--r-- | tools/perf/builtin-record.c | 4 | ||||
| -rw-r--r-- | tools/perf/perf.h | 2 | ||||
| -rw-r--r-- | tools/perf/util/evsel.c | 4 |
4 files changed, 21 insertions, 0 deletions
diff --git a/tools/perf/Documentation/perf-record.txt b/tools/perf/Documentation/perf-record.txt index de269430720a..15e0fa87241b 100644 --- a/tools/perf/Documentation/perf-record.txt +++ b/tools/perf/Documentation/perf-record.txt @@ -490,6 +490,17 @@ Configure all used events to run in kernel space. --all-user:: Configure all used events to run in user space. +--kernel-callchains:: +Collect callchains only from kernel space. I.e. this option sets +perf_event_attr.exclude_callchain_user to 1. + +--user-callchains:: +Collect callchains only from user space. I.e. this option sets +perf_event_attr.exclude_callchain_kernel to 1. + +Don't use both --kernel-callchains and --user-callchains at the same time or no +callchains will be collected. + --timestamp-filename Append timestamp to output file name. diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index e2c3a585a61e..dca55997934e 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -2191,6 +2191,10 @@ static struct option __record_options[] = { OPT_BOOLEAN_FLAG(0, "all-user", &record.opts.all_user, "Configure all used events to run in user space.", PARSE_OPT_EXCLUSIVE), + OPT_BOOLEAN(0, "kernel-callchains", &record.opts.kernel_callchains, + "collect kernel callchains"), + OPT_BOOLEAN(0, "user-callchains", &record.opts.user_callchains, + "collect user callchains"), OPT_STRING(0, "clang-path", &llvm_param.clang_path, "clang path", "clang binary to use for compiling BPF scriptlets"), OPT_STRING(0, "clang-opt", &llvm_param.clang_opt, "clang options", diff --git a/tools/perf/perf.h b/tools/perf/perf.h index d59dee61b64d..711e009381ec 100644 --- a/tools/perf/perf.h +++ b/tools/perf/perf.h @@ -61,6 +61,8 @@ struct record_opts { bool record_switch_events; bool all_kernel; bool all_user; + bool kernel_callchains; + bool user_callchains; bool tail_synthesize; bool overwrite; bool ignore_missing_thread; diff --git a/tools/perf/util/evsel.c b/tools/perf/util/evsel.c index cc6e7a0dda92..9f3b58071863 100644 --- a/tools/perf/util/evsel.c +++ b/tools/perf/util/evsel.c @@ -680,6 +680,10 @@ static void __perf_evsel__config_callchain(struct perf_evsel *evsel, attr->sample_max_stack = param->max_stack; + if (opts->kernel_callchains) + attr->exclude_callchain_user = 1; + if (opts->user_callchains) + attr->exclude_callchain_kernel = 1; if (param->record_mode == CALLCHAIN_LBR) { if (!opts->branch_stack) { if (attr->exclude_user) { |