From 4ad9f594d7199c99f6b1b3ef88c64bd5920a4592 Mon Sep 17 00:00:00 2001 From: Arnaldo Carvalho de Melo Date: Tue, 11 Jan 2011 16:58:54 -0200 Subject: [PATCH] Revert "perf tools: Emit clearer message for sys_perf_event_open ENOENT return" This reverts commit aa7bc7ef73efc46d7c3a0e185eefaf85744aec98. It removed the fallback from hardware profiling to software profiling. .e.g., in a VM with no PMU. Reported-by: David Ahern Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Mike Galbraith Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Cc: Tom Zanussi LKML-Reference: Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-record.c | 3 --- tools/perf/builtin-top.c | 2 -- 2 files changed, 5 deletions(-) diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index aa7ece3..1210e64 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -331,9 +331,6 @@ try_again: else if (err == ENODEV && cpu_list) { die("No such device - did you specify" " an out-of-range profile CPU?\n"); - } else if (err == ENOENT) { - die("%s event is not supported. ", - event_name(evsel)); } else if (err == EINVAL && sample_id_all_avail) { /* * Old kernel, no attr->sample_id_type_all field diff --git a/tools/perf/builtin-top.c b/tools/perf/builtin-top.c index 568b195..05344c6 100644 --- a/tools/perf/builtin-top.c +++ b/tools/perf/builtin-top.c @@ -1247,8 +1247,6 @@ try_again: die("Permission error - are you root?\n" "\t Consider tweaking" " /proc/sys/kernel/perf_event_paranoid.\n"); - if (err == ENOENT) - die("%s event is not supported. ", event_name(evsel)); /* * If it's cycles then fall back to hrtimer * based cpu-clock-tick sw counter, which -- 2.7.4