From 53653d70a0784a997748cc9e315ddf19d310e812 Mon Sep 17 00:00:00 2001 From: Adrian Hunter Date: Mon, 9 Dec 2013 15:18:40 +0200 Subject: [PATCH] perf record: Fix display of incorrect mmap pages 'mmap_pages' is 'unsigned int' not 'int' e.g. perf record -m2147483648 uname Permission error mapping pages. Consider increasing /proc/sys/kernel/perf_event_mlock_kb, or try again with a smaller value of -m/--mmap_pages. (current value: -2147483648) Fixed: perf record -m2147483648 uname Permission error mapping pages. Consider increasing /proc/sys/kernel/perf_event_mlock_kb, or try again with a smaller value of -m/--mmap_pages. (current value: 2147483648) Signed-off-by: Adrian Hunter Acked-by: Jiri Olsa Cc: David Ahern Cc: Frederic Weisbecker Cc: Ingo Molnar Cc: Jiri Olsa Cc: Mike Galbraith Cc: Namhyung Kim Cc: Paul Mackerras Cc: Peter Zijlstra Cc: Stephane Eranian Link: http://lkml.kernel.org/r/1386595120-22978-5-git-send-email-adrian.hunter@intel.com Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/builtin-record.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/tools/perf/builtin-record.c b/tools/perf/builtin-record.c index d93e2eef0979..c1c1200d2f0a 100644 --- a/tools/perf/builtin-record.c +++ b/tools/perf/builtin-record.c @@ -224,7 +224,7 @@ try_again: "Consider increasing " "/proc/sys/kernel/perf_event_mlock_kb,\n" "or try again with a smaller value of -m/--mmap_pages.\n" - "(current value: %d)\n", opts->mmap_pages); + "(current value: %u)\n", opts->mmap_pages); rc = -errno; } else { pr_err("failed to mmap with %d (%s)\n", errno, strerror(errno)); -- 2.30.2