After comments from Florian Weimer, who pointed out various
confusions in the earlier text.
Reported-by: Florian Weimer <fweimer@redhat.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
The attr argument of sched_setattr was documented as const but the
kernel will modify the size field of this struct if it contains an
invalid value. See the documentation of the size field for details.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This patch relates to the exclude_host and exclude_guest bits added
by the following commit:
exclude_host, exclude_guest; Linux 3.2
commit a240f76165e6255384d4bdb8139895fac7988799
Author: Joerg Roedel <joerg.roedel@amd.com>
Date: Wed Oct 5 14:01:16 2011 +0200
perf, core: Introduce attrs to count in either host or guest mode
The updated manpage text clarifies that the "exclude_host" and
"exclude_guest" perf_event_open() attr bits only apply in the
context of a KVM environment and are currently x86 only.
Signed-off-by: Vince Weaver <vincent.weaver@maine.edu>
Acked-by: Joerg Roedel <jroedel@suse.de>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
This patch relates to the addition of PERF_SAMPLE_REGS_INTR
support added in the following commit:
perf_sample_regs_intr; Linux 3.19
commit 60e2364e60e86e81bc6377f49779779e6120977f
Author: Stephane Eranian <eranian@google.com>
perf: Add ability to sample machine state on interrupt
The primary difference between PERF_SAMPLE_REGS_INTR and the
existing PERF_SAMPLE_REGS_USER is that the new support will
return kernel register values. Also if precise_ip is
set higher than 0 then the PEBS register state will be returned
rather than the saved interrupt state.
This patch incorporates feedback from Stephane Eranian and
Andi Kleen.
Signed-off-by: Vince Weaver <vincent.weaver@maine.edu>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
ENOMEM can occur if locking/unlocking in the middle of a region
would increase the number of VMAs beyond the system limit (64k).
Reported-by: Mehdi Aqadjani Memar <m.aqadjanimemar@student.vu.nl>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Add a Console Private CSI sequence to specify the current
console's cursor blink interval. The interval is specified
as a number of milliseconds until the next cursor display
state toggle, from 50 to 65535.
Acked-by: Pavel Machek <pavel@ucw.cz>
Signed-off-by: Scot Doyle <lkml14@scotdoyle.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
To some degree, this is true of many pages. And anyway, this
page is much better after recent work by Marko.
Reported-by: Marko Myllynen <myllynen@redhat.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Long ago, Doug Klima noted that many macros were not
documented in the queue(3) page. Fix by reimporting from
latest [1] FreeBSD man page.
[1] Revision 263142, Modified Fri Mar 14 03:07:51 2014 UTC
This also fixes https://sourceware.org/bugzilla/show_bug.cgi?id=1506
This time, I'll learn from past mistakes and not convert
from 'mdoc' to 'man' macros.
Reported-by: David Leppik <dleppik@vocalabs.com>
Reported-by: Doug Klima <cardoe@gentoo.org>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Adding a note on this point seems worthwhile as a way of
emphasizing the point that the buffers must not overlap.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
These days, glibc implements _exit() as a wrapper around
exit_group(2). (When seccomp was originally introduced, this was
not the case.) Give the reader a clue that, despite what glibc is
doing, what SECCOMP_SET_MODE_STRICT permits is the true _exit(2)
system call, and not exit_group(2).
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
Michael Kerrisk