Michael Kerrisk
dceb9af608
perf_event_open.2: srcfix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-20 07:54:17 +02:00
Vince Weaver
9691959295
perf_event_open.2: Add cycles field in LBR records
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Linux 4.3 (71ef3c6b9d4665ee7afbbe4c208a98917dcfc32f)
added a cycles field to the PERF_SAMPLE_BRANCH_STACK
last branch records.
The kernel commit was a bit vague on this, but you can find
a few more details on this in the Intel Architectural Manual
vol3B. The field indicates the number of core cycles elapsed
since the previous update to the LBR stack.
This feature is only found on Skylake and newer Intel chips,
as well as Intel Atom Goldmont chips. I'm not sure if it's
worth adding this info to the manpage, as it seems a bit
specific and will probably get rapidly out of date.
Signed-off-by: Vince Weaver <vincent.weaver@maine.edu>
2016-10-20 07:50:40 +02:00
Michael Kerrisk
54905b0fc3
perf_event_open.2: tfix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-20 07:49:15 +02:00
Michael Kerrisk
2cf45b0d77
capabilities.7: wfix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-19 10:53:38 +02:00
Michael Kerrisk
d5a24378f9
perf_event_open.2: Minor tweaks to Vince Weaver's patch
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-19 08:59:31 +02:00
Vince Weaver
9277a75d39
perf_event_open.2: PERF_RECORD_SWITCH support
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Linux 4.3 introduced two new record types for recording context
switches: PERF_RECORD_SWITCH and PERF_RECORD_SWITCH_CPU_WIDE.
The advantage over the existing tracepoint and software context
switch events is primarily that full switch in/out data can be
gathered even in the face of restrictive perf_event_paranoid
settings.
Signed-off-by: Vince Weaver <vincent.weaver@maine.edu>
2016-10-19 08:53:47 +02:00
Michael Kerrisk
9227137a38
mallopt.3: Minor clarification for M_ARENA_MAX
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-19 08:46:15 +02:00
Michael Kerrisk
7655c1839d
mallopt.3: Improve description of M_ARENA_TEST
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-18 18:03:49 +02:00
Michael Kerrisk
8d02a0ab04
mallopt.3: Correct the description of M_ARENA_MAX==0
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Reported-by: Siddhesh Poyarekar <siddhesh@sourceware.org>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-18 17:53:29 +02:00
Michael Kerrisk
3bbab71ae8
capabilities.7: tfix + wfix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-18 10:46:54 +02:00
Michael Kerrisk
de6a5c0501
capabilities.7: ffix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-18 09:43:27 +02:00
Michael Kerrisk
8e81aad0dc
mallopt.3: Document default value for M_ARENA_TEST
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-18 09:14:27 +02:00
Michael Kerrisk
19557f4043
mallopt.3: Document 0 as default value of M_ARENA_MAX and explain its meaning
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-18 08:56:19 +02:00
Michael Kerrisk
b075133f9c
mallopt.3: Minor fix: relocate some text
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-18 08:50:45 +02:00
Michael Kerrisk
bf5c6199e3
mallopt.3: ffix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-18 08:50:06 +02:00
Michael Kerrisk
ba202ba07f
mallopt.3: Note default value of M_PERTURB
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-18 08:45:16 +02:00
Michael Kerrisk
8d66586467
mallopt.3: ffix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-18 08:41:13 +02:00
Michael Kerrisk
bb70234f74
mallopt.3: tfix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-18 08:36:18 +02:00
Michael Kerrisk
141efa1be5
perf_event_open.2: Minor wording tweaks to Vince Weaver's patch
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-18 08:16:55 +02:00
Vince Weaver
ffbc7c0273
perf_event_open.2: Document PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT
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Linux 4.2 reserved a new bit from the misc field in
the perf_event_open() mmap sample buffer:
PERF_RECORD_MISC_PROC_MAP_PARSE_TIMEOUT
Despite being reserved in the public
include/uapi/linux/perf_event.h header file, this bit is never set
by the kernel. Rather, it is used internally by the user-space
"perf" utility to indicate that, when attempting to parse all of
the /proc/xxx/maps files for the sample, it ended up taking too
long so the scan was aborted.
Signed-off-by: Vince Weaver <vincent.weaver@maine.edu>
2016-10-18 08:15:30 +02:00
Darrick J. Wong
2046b8ac01
ioctl_ficlonerange.2, ioctl_fideduperange.2: Clarify the behavior of the FIDEDUPERANGE ioctl
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Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2016-10-18 08:08:43 +02:00
Darrick J. Wong
63a599c657
man2/fallocate.2: Document behavior with shared blocks
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Note that FALLOC_FL_UNSHARE may use CoW to unshare blocks to
guarantee that a disk write won't fail with ENOSPC.
Signed-off-by: Darrick J. Wong <darrick.wong@oracle.com>
2016-10-18 08:05:34 +02:00
Michael Kerrisk
3b3d46e7cf
pkeys.7: srcfix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-18 08:00:12 +02:00
Dave Hansen
c92965c2be
pkey.7: Add description of signal handling behavior
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The signal behavior of pkeys is special compared to many other
processor and OS features. Add a special section to describe
the behavior.
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
2016-10-18 07:58:52 +02:00
Michael Kerrisk
3e712e2a67
pkey_alloc.2: tfix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-17 14:04:17 +02:00
Michael Kerrisk
31e0cc4430
mprotect.2: tfix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-17 14:04:17 +02:00
Michael Kerrisk
a398e76366
pkey_alloc.2: Add a pointer to example program in pkeys(7)
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-17 14:04:17 +02:00
Michael Kerrisk
9e7d6be1f5
mprotect.2: Various tweaks to the text
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-17 14:04:17 +02:00
Michael Kerrisk
f74aed0e62
mprotect.2: VERSIONS: note kernel version for pkey_mprotect()
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-17 14:04:17 +02:00
Michael Kerrisk
8f5484f8b6
mprotect.2: CONFORMING TO: note that pkey_mprotect() is Linux-specific
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-17 14:04:11 +02:00
Michael Kerrisk
e956ced871
pkey_alloc.2: Reorganize text
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No content changes.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-17 14:04:11 +02:00
Michael Kerrisk
b638d22097
pkey_alloc.2: Various tweaks to the text
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-17 14:04:11 +02:00
Michael Kerrisk
79a2a43713
pkeys.7: Note that SIGSEGV results if pkey restrictions are violated
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And point to sigaction(2) for further details.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-17 14:04:11 +02:00
Michael Kerrisk
8bb4e76704
pkeys.7: Cosmetic changes to example program
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-17 14:04:11 +02:00
Michael Kerrisk
435f231ac9
pkeys.7: Various tweaks to the text
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No changes to technical details.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-17 14:04:11 +02:00
Michael Kerrisk
6fc107c1da
pkey_mprotect.2: New link to mprotect(2)
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-17 14:04:11 +02:00
Michael Kerrisk
fb48371eeb
pkey_free.2: New link to new pkey_alloc(2) page
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-17 14:04:11 +02:00
Michael Kerrisk
6075e4eb6b
syscalls.2: Add pkey_alloc(), pkey_free(), and pkey_mprotect()
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New system calls in Linux 4.9.
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-17 14:04:11 +02:00
Michael Kerrisk
2f05728103
proc.5: Add example ProtectionKey output for 'smaps' file
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-17 14:04:06 +02:00
Dave Hansen
be729d667d
proc.5: Describe new ProtectionKey 'smaps' field
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Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
2016-10-17 14:03:28 +02:00
Dave Hansen
bc2983d6d6
sigaction.2: Further documentation of SEGV_PKUERR
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Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-17 12:51:10 +02:00
Dave Hansen
d457be9d03
pkey_alloc.2: New page documenting pkey_alloc(2) and pkey_free(2)
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Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
2016-10-17 12:51:10 +02:00
Dave Hansen
d800ae65d3
mprotect.2: Document pkey_mprotect() system call
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Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
2016-10-17 12:51:10 +02:00
Dave Hansen
452f54946f
pkeys.7: New page with overview of Memory Protection Keys
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Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
2016-10-17 12:51:10 +02:00
Michael Kerrisk
fc79d996c1
perf_event_open.2: tfix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-17 11:17:42 +02:00
Michael Kerrisk
6831ba6b0f
perf_event_open.2: Clarify the use of signals for capturing overflow events
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-17 11:17:42 +02:00
Michael Kerrisk
4b3a5f018a
perf_event_open.2: Minor wording fixes
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-17 11:17:35 +02:00
Michael Kerrisk
edb3e31604
perf_event_open.2: tfix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-17 10:54:57 +02:00
Michael Kerrisk
4af2757220
perf_event_open.2: tfix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-17 10:53:31 +02:00
Michael Kerrisk
7a10da70f2
perf_event_open.2: ffix
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Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
2016-10-17 08:44:55 +02:00