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From b4cad00cfb3086490261db7202de8ed846e79344 Mon Sep 17 00:00:00 2001
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From: Sebastien GODARD <sysstat@orange.fr.fake>
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Date: Wed, 2 Oct 2013 09:55:38 +0200
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Subject: [PATCH] pidstat: Display stats since boot time for a list of given
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processes
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pidstat displays statistics since system startup when the interval and
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count parameters are not set on the command line (eg. entering "pidstat
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-d" will display I/O statistics for all processes that have had I/O
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activity since boot time). But pidstat couldn't display those stats when
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some PID numbers were entered on the command line (eg. "pidstat -d -p
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1234" to display I/O stats since system startup for process 1234).
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This patch makes it possible now.
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Signed-off-by: Sebastien GODARD <sysstat@orange.fr.fake>
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(cherry picked from commit 18c7a03f52826942a720b2a0cc32e1f074784c6a)
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Resolves: #1448489
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---
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pidstat.c | 16 ++++++++++++----
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1 file changed, 12 insertions(+), 4 deletions(-)
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diff --git a/pidstat.c b/pidstat.c
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index 3bb98f2..85d4d98 100644
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--- a/pidstat.c
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+++ b/pidstat.c
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@@ -1048,10 +1048,18 @@ int get_pid_to_display(int prev, int curr, int p, unsigned int activity,
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else if (DISPLAY_PID(pidflag)) {
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*pstp = st_pid_list[prev] + p;
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-
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- if (!(*pstp)->pid)
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- /* PID no longer exists */
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- return 0;
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+ if (!(*pstp)->pid) {
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+ if (interval)
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+ /* PID no longer exists */
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+ return 0;
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+ else {
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+ /*
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+ * If interval is null, then we are trying to
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+ * display stats for a given process since boot time.
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+ */
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+ *pstp = &st_pid_null;
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+ }
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+ }
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}
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if (COMMAND_STRING(pidflag)) {
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--
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2.13.6
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