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@@ -18,7 +18,7 @@
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<h2 class='titleHead'>The Linux Kernel Module Programming Guide</h2>
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<h2 class='titleHead'>The Linux Kernel Module Programming Guide</h2>
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<div class='author'><span class='ecrm-1200'>Peter Jay Salzman, Michael Burian, Ori Pomerantz, Bob Mottram, Jim Huang</span></div><br />
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<div class='author'><span class='ecrm-1200'>Peter Jay Salzman, Michael Burian, Ori Pomerantz, Bob Mottram, Jim Huang</span></div><br />
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-<div class='date'><span class='ecrm-1200'>March 26, 2023</span></div>
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+<div class='date'><span class='ecrm-1200'>April 27, 2023</span></div>
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@@ -3783,7 +3783,7 @@ closed the file can continue to run. In time, the scheduler decides that that
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process has had enough and gives control of the CPU to another process.
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process has had enough and gives control of the CPU to another process.
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Eventually, one of the processes which was in the queue will be given control
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Eventually, one of the processes which was in the queue will be given control
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of the CPU by the scheduler. It starts at the point right after the call to
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of the CPU by the scheduler. It starts at the point right after the call to
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-<code> <span class='ectt-1000'>module_interruptible_sleep_on</span>
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+<code> <span class='ectt-1000'>wait_event_interruptible</span>
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</code>.
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</code>.
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</p><!-- l. 1587 --><p class='indent'> This means that the process is still in kernel mode - as far as the process
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</p><!-- l. 1587 --><p class='indent'> This means that the process is still in kernel mode - as far as the process
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is concerned, it issued the open system call and the system call has not
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is concerned, it issued the open system call and the system call has not
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@@ -3801,8 +3801,8 @@ able to access the file and finally terminates.
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</p><!-- l. 1596 --><p class='indent'> To make our life more interesting, <code> <span class='ectt-1000'>module_close</span>
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</p><!-- l. 1596 --><p class='indent'> To make our life more interesting, <code> <span class='ectt-1000'>module_close</span>
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</code> does not have a monopoly on waking up the processes which wait to access the file.
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</code> does not have a monopoly on waking up the processes which wait to access the file.
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A signal, such as <span class='ecti-1000'>Ctrl +c </span>(<span class='ecbx-1000'>SIGINT</span>) can also wake up a process. This is because we
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A signal, such as <span class='ecti-1000'>Ctrl +c </span>(<span class='ecbx-1000'>SIGINT</span>) can also wake up a process. This is because we
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-used <code> <span class='ectt-1000'>module_interruptible_sleep_on</span>
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-</code>. We could have used <code> <span class='ectt-1000'>module_sleep_on</span>
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+used <code> <span class='ectt-1000'>wait_event_interruptible</span>
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+</code>. We could have used <code> <span class='ectt-1000'>wait_event</span>
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</code> instead, but that would have resulted in extremely angry users whose <span class='ecti-1000'>Ctrl+c</span>’s are
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</code> instead, but that would have resulted in extremely angry users whose <span class='ecti-1000'>Ctrl+c</span>’s are
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ignored.
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ignored.
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</p><!-- l. 1600 --><p class='indent'> In that case, we want to return with
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</p><!-- l. 1600 --><p class='indent'> In that case, we want to return with
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jserv