From: Michael Lentine Date: Tue, 20 May 2014 09:48:49 +0000 (+0200) Subject: perf tools: Add cat as fallback pager X-Git-Tag: firefly_0821_release~176^2~3763^2~17^2~1 X-Git-Url: http://demsky.eecs.uci.edu/git/?a=commitdiff_plain;h=21cfc5e10395eba795c0610cf3cf7f0a4f6f33ff;p=firefly-linux-kernel-4.4.55.git perf tools: Add cat as fallback pager This patch adds a fallback to cat for the pager. This is useful on environments, such as Android, where less does not exist. It is better to default to cat than to abort. Signed-off-by: Michael Lentine Reviewed-by: Stephane Eranian Link: http://lkml.kernel.org/r/1400579330-5043-2-git-send-email-eranian@google.com Signed-off-by: Jiri Olsa --- diff --git a/tools/perf/util/pager.c b/tools/perf/util/pager.c index 3322b8446e89..31ee02d4e988 100644 --- a/tools/perf/util/pager.c +++ b/tools/perf/util/pager.c @@ -57,13 +57,13 @@ void setup_pager(void) } if (!pager) pager = getenv("PAGER"); - if (!pager) { - if (!access("/usr/bin/pager", X_OK)) - pager = "/usr/bin/pager"; - } + if (!(pager || access("/usr/bin/pager", X_OK))) + pager = "/usr/bin/pager"; + if (!(pager || access("/usr/bin/less", X_OK))) + pager = "/usr/bin/less"; if (!pager) - pager = "less"; - else if (!*pager || !strcmp(pager, "cat")) + pager = "cat"; + if (!*pager || !strcmp(pager, "cat")) return; spawned_pager = 1; /* means we are emitting to terminal */