Merge branch 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull perf tooling updates from Thomas Gleixner:
 "A set of perf improvements and fixes:

  perf db-export:
   - Improvements in how COMM details are exported to databases for post
     processing and use in the sql-viewer.py UI.

   - Export switch events to the database.

  BPF:
   - Bump rlimit(MEMLOCK) for 'perf test bpf' and 'perf trace', just
     like selftests/bpf/bpf_rlimit.h do, which makes errors due to
     exhaustion of this limit, which are kinda cryptic (EPERM sometimes)
     less frequent.

  perf version:
   - Fix segfault due to missing OPT_END(), noticed on PowerPC.

  perf vendor events:
   - Add JSON files for IBM s/390 machine type 8561.

  perf cs-etm (ARM):
   - Fix two cases of error returns not bing done properly: Invalid
     ERR_PTR() use and loss of propagation error codes"

* 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (28 commits)
  perf version: Fix segfault due to missing OPT_END()
  perf vendor events s390: Add JSON files for machine type 8561
  perf cs-etm: Return errcode in cs_etm__process_auxtrace_info()
  perf cs-etm: Remove errnoeous ERR_PTR() usage in cs_etm__process_auxtrace_info
  perf scripts python: export-to-postgresql.py: Export switch events
  perf scripts python: export-to-sqlite.py: Export switch events
  perf db-export: Export switch events
  perf db-export: Factor out db_export__threads()
  perf script: Add scripting operation process_switch()
  perf scripts python: exported-sql-viewer.py: Use new 'has_calls' column
  perf scripts python: exported-sql-viewer.py: Remove redundant semi-colons
  perf scripts python: export-to-postgresql.py: Add has_calls column to comms table
  perf scripts python: export-to-sqlite.py: Add has_calls column to comms table
  perf db-export: Also export thread's current comm
  perf db-export: Factor out db_export__comm()
  perf scripts python: export-to-postgresql.py: Export comm details
  perf scripts python: export-to-sqlite.py: Export comm details
  perf db-export: Export comm details
  perf db-export: Fix a white space issue in db_export__sample()
  perf db-export: Move export__comm_thread into db_export__sample()
  ...

1 files changed, 10 insertions, 0 deletions

diff --git a/tools/perf/builtin-trace.c b/tools/perf/builtin-trace.c
index 1aa2ed096f65..4f0bbffee05f 100644
--- a/tools/perf/builtin-trace.c
+++ b/tools/perf/builtin-trace.c
@@ -19,6 +19,7 @@
 #include <api/fs/tracing_path.h>
 #include <bpf/bpf.h>
 #include "util/bpf_map.h"
+#include "util/rlimit.h"
 #include "builtin.h"
 #include "util/cgroup.h"
 #include "util/color.h"
@@ -3864,6 +3865,15 @@ int cmd_trace(int argc, const char **argv)
 		goto out;
 	}
 
+	/*
+	 * Parsing .perfconfig may entail creating a BPF event, that may need
+	 * to create BPF maps, so bump RLIM_MEMLOCK as the default 64K setting
+	 * is too small. This affects just this process, not touching the
+	 * global setting. If it fails we'll get something in 'perf trace -v'
+	 * to help diagnose the problem.
+	 */
+	rlimit__bump_memlock();
+
 	err = perf_config(trace__config, &trace);
 	if (err)
 		goto out;