From d41bf48327e4a369279b68c229110e873880419a Mon Sep 17 00:00:00 2001 From: kib Date: Sat, 13 Dec 2014 16:18:29 +0000 Subject: Add facility to stop all userspace processes. The supposed use of the feature is to quisce the system before suspend. Stop is implemented by reusing the thread_single(9) with the special mode SINGLE_ALLPROC. SINGLE_ALLPROC differs from the existing single-threading modes by allowing (requiring) caller to operate on other process. Interruptible sleeps for !TDF_SBDRY threads are suspended like SIGSTOP does it, instead of aborting the sleep, like SINGLE_NO_EXIT, to avoid spurious EINTRs on resume. Provide debugging sysctl debug.stop_all_proc, which causes total stop and suspends syncer, while waiting for variable reset for resume. It is used for debugging; should be removed after the real use of the interface is added. In collaboration with: pho Discussed with: avg Sponsored by: The FreeBSD Foundation MFC after: 2 weeks --- bin/ps/ps.1 | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-) (limited to 'bin/ps') diff --git a/bin/ps/ps.1 b/bin/ps/ps.1 index 294ecf9..7e26dd9 100644 --- a/bin/ps/ps.1 +++ b/bin/ps/ps.1 @@ -29,7 +29,7 @@ .\" @(#)ps.1 8.3 (Berkeley) 4/18/94 .\" $FreeBSD$ .\" -.Dd August 27, 2014 +.Dd December 9, 2014 .Dt PS 1 .Os .Sh NAME @@ -332,6 +332,7 @@ the include file .It Dv "P_SINGLE_BOUNDARY" Ta No "0x400000" Ta "Threads should suspend at user boundary" .It Dv "P_HWPMC" Ta No "0x800000" Ta "Process is using HWPMCs" .It Dv "P_JAILED" Ta No "0x1000000" Ta "Process is in jail" +.It Dv "P_TOTAL_STOP" Ta No "0x2000000" Ta "Stopped for system suspend" .It Dv "P_INEXEC" Ta No "0x4000000" Ta "Process is in execve()" .It Dv "P_STATCHILD" Ta No "0x8000000" Ta "Child process stopped or exited" .It Dv "P_INMEM" Ta No "0x10000000" Ta "Loaded into memory" -- cgit v1.1