mirror of https://github.com/mkerrisk/man-pages
proc.5: Document removal of timer_stats file
timer_stats was removed in Linux commit commit v4.11-rc1~177^2~5 citing security concerns. * man5/proc.5 (.SS Files and directories) <.TP .I /proc/timer_stats>: Mention the last Linux version where the file was available along with the reasons of removal. Signed-off-by: Eugene Syromyatnikov <evgsyr@gmail.com> Signed-off-by: Michael Kerrisk <mtk.manpages@gmail.com>
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@ -5338,10 +5338,12 @@ This read-only file exposes a list of all currently pending
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(high-resolution) timers,
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(high-resolution) timers,
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all clock-event sources, and their parameters in a human-readable form.
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all clock-event sources, and their parameters in a human-readable form.
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.TP
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.TP
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.IR /proc/timer_stats " (since Linux 2.6.21)"
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.IR /proc/timer_stats " (since Linux 2.6.21, before Linux 4.11)"
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.\" commit 82f67cd9fca8c8762c15ba7ed0d5747588c1e221
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.\" commit 82f67cd9fca8c8762c15ba7ed0d5747588c1e221
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.\" Date: Fri Feb 16 01:28:13 2007 -0800
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.\" Date: Fri Feb 16 01:28:13 2007 -0800
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.\" Text largely derived from Documentation/timers/timer_stats.txt
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.\" Text largely derived from Documentation/timers/timer_stats.txt
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.\" removed in commit dfb4357da6ddbdf57d583ba64361c9d792b0e0b1
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.\" Date: Wed Feb 8 11:26:59 2017 -0800
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This is a debugging facility to make timer (ab)use in a Linux
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This is a debugging facility to make timer (ab)use in a Linux
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system visible to kernel and user-space developers.
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system visible to kernel and user-space developers.
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It can be used by kernel and user-space developers to verify that
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It can be used by kernel and user-space developers to verify that
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@ -5435,6 +5437,10 @@ the function where the timer was initialized; and
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(in parentheses)
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(in parentheses)
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the callback function that is associated with the timer.
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the callback function that is associated with the timer.
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.RE
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.RE
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.IP
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During the Linux 4.11 development cycle this functionality has been removed,
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as it exposes information across namespaces, and there is possibility to obtain
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the same information via in-kernel tracing facilities such as ftrace.
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.TP
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.TP
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.I /proc/tty
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.I /proc/tty
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Subdirectory containing the pseudo-files and subdirectories for
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Subdirectory containing the pseudo-files and subdirectories for
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