Arnaldo Carvalho de Melo 9f591fd76a perf record: Don't try to find buildids in a zero sized file ... Fixing this symptom: [acme@mica linux-2.6-tip]$ perf record -a -f Fatal: Permission error - are you root? Bus error [acme@mica linux-2.6-tip]$ I.e. if for some reason no data is collected, in this case a non root user trying to do systemwide profiling, no data will be collected, and then we end up trying to mmap a zero sized file and access the file header, b00m. Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com> Cc: Frédéric Weisbecker <fweisbec@gmail.com> Cc: Mike Galbraith <efault@gmx.de> Cc: Peter Zijlstra <a.p.zijlstra@chello.nl> Cc: Paul Mackerras <paulus@samba.org> Cc: <stable@kernel.org> LKML-Reference: <1268333592-30872-1-git-send-email-acme@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>		2010-03-11 20:00:32 +01:00
..
bench
Documentation	perf: Make the install relative to DESTDIR if specified	2010-03-11 14:08:11 +01:00
scripts
util	perf tools: Fix sparse CPU numbering related bugs	2010-03-11 13:36:53 +01:00
.gitignore
builtin-annotate.c
builtin-bench.c
builtin-buildid-cache.c
builtin-buildid-list.c
builtin-diff.c
builtin-help.c
builtin-kmem.c
builtin-list.c
builtin-lock.c
builtin-probe.c
builtin-record.c	perf record: Don't try to find buildids in a zero sized file	2010-03-11 20:00:32 +01:00
builtin-report.c	perf report: Add multiple event support	2010-03-10 13:53:50 +01:00
builtin-sched.c
builtin-stat.c	perf tools: Fix sparse CPU numbering related bugs	2010-03-11 13:36:53 +01:00
builtin-timechart.c
builtin-top.c	perf tools: Fix sparse CPU numbering related bugs	2010-03-11 13:36:53 +01:00
builtin-trace.c
builtin.h
command-list.txt
CREDITS
design.txt
Makefile	perf: Make the install relative to DESTDIR if specified	2010-03-11 14:08:11 +01:00
perf-archive.sh
perf.c
perf.h