From 863981e96738983919de841ec669e157e6bdaeb0 Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Andr=C3=A9=20Fabian=20Silva=20Delgado?= Date: Sun, 11 Sep 2016 04:34:46 -0300 Subject: Linux-libre 4.7.1-gnu --- tools/perf/perf.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) (limited to 'tools/perf/perf.c') diff --git a/tools/perf/perf.c b/tools/perf/perf.c index aaee0a782..15982cee5 100644 --- a/tools/perf/perf.c +++ b/tools/perf/perf.c @@ -17,6 +17,7 @@ #include #include "util/bpf-loader.h" #include "util/debug.h" +#include #include #include #include @@ -308,9 +309,11 @@ static int handle_alias(int *argcp, const char ***argv) if (*argcp > 1) { struct strbuf buf; - strbuf_init(&buf, PATH_MAX); - strbuf_addstr(&buf, alias_string); - sq_quote_argv(&buf, (*argv) + 1, PATH_MAX); + if (strbuf_init(&buf, PATH_MAX) < 0 || + strbuf_addstr(&buf, alias_string) < 0 || + sq_quote_argv(&buf, (*argv) + 1, + PATH_MAX) < 0) + die("Failed to allocate memory."); free(alias_string); alias_string = buf.buf; } @@ -533,6 +536,7 @@ int main(int argc, const char **argv) { const char *cmd; char sbuf[STRERR_BUFSIZE]; + int value; /* libsubcmd init */ exec_cmd_init("perf", PREFIX, PERF_EXEC_PATH, EXEC_PATH_ENVIRONMENT); @@ -542,6 +546,12 @@ int main(int argc, const char **argv) page_size = sysconf(_SC_PAGE_SIZE); cacheline_size = sysconf(_SC_LEVEL1_DCACHE_LINESIZE); + if (sysctl__read_int("kernel/perf_event_max_stack", &value) == 0) + sysctl_perf_event_max_stack = value; + + if (sysctl__read_int("kernel/perf_event_max_contexts_per_stack", &value) == 0) + sysctl_perf_event_max_contexts_per_stack = value; + cmd = extract_argv0_path(argv[0]); if (!cmd) cmd = "perf-help"; @@ -549,6 +559,7 @@ int main(int argc, const char **argv) srandom(time(NULL)); perf_config(perf_default_config, NULL); + set_buildid_dir(NULL); /* get debugfs/tracefs mount point from /proc/mounts */ tracing_path_mount(); @@ -572,7 +583,6 @@ int main(int argc, const char **argv) } if (!prefixcmp(cmd, "trace")) { #ifdef HAVE_LIBAUDIT_SUPPORT - set_buildid_dir(NULL); setup_path(); argv[0] = "trace"; return cmd_trace(argc, argv, NULL); @@ -587,7 +597,6 @@ int main(int argc, const char **argv) argc--; handle_options(&argv, &argc, NULL); commit_pager_choice(); - set_buildid_dir(NULL); if (argc > 0) { if (!prefixcmp(argv[0], "--")) -- cgit v1.2.3