tree 2547ed90722723a9039bbbc3d4f1519d4908db79
parent e80711ca8512c8586da0c3e18e2f1caf73c88731
author Franck Bui-Huu <fbuihuu@gmail.com> 1295194485 +0100
committer Arnaldo Carvalho de Melo <acme@redhat.com> 1295873907 -0200

perf record: auto detect when stdout is a pipe

This patch gives the ability to 'perf record' to detect when its stdout
has been redirected to a pipe. There's now no more need to add '-o -'
switch in this case.

However '-o <path>' option has always precedence, that is if specified
and stdout has been connected via a pipe then the output will go into
the specified output.

LKML-Reference: <m3ipxo966i.fsf@gmail.com>
Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>