linux-kernel - [PATCH v2] Documentation/locking/locktypes: minor copy editor fixes

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Date:   Wed, 25 Mar 2020 09:58:14 -0700
From:   Randy Dunlap <rdunlap@...radead.org>
To:     Thomas Gleixner <tglx@...utronix.de>, paulmck@...nel.org
Cc:     LKML <linux-kernel@...r.kernel.org>,
        Peter Zijlstra <peterz@...radead.org>,
        Ingo Molnar <mingo@...nel.org>,
        Sebastian Siewior <bigeasy@...utronix.de>,
        Linus Torvalds <torvalds@...ux-foundation.org>,
        Joel Fernandes <joel@...lfernandes.org>,
        Oleg Nesterov <oleg@...hat.com>,
        Davidlohr Bueso <dave@...olabs.net>,
        Jonathan Corbet <corbet@....net>,
        Logan Gunthorpe <logang@...tatee.com>,
        Bjorn Helgaas <bhelgaas@...gle.com>,
        Kurt Schwemmer <kurt.schwemmer@...rosemi.com>,
        linux-pci@...r.kernel.org,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        Felipe Balbi <balbi@...nel.org>, linux-usb@...r.kernel.org,
        Kalle Valo <kvalo@...eaurora.org>,
        "David S. Miller" <davem@...emloft.net>,
        linux-wireless@...r.kernel.org, netdev@...r.kernel.org,
        Darren Hart <dvhart@...radead.org>,
        Andy Shevchenko <andy@...radead.org>,
        platform-driver-x86@...r.kernel.org,
        Zhang Rui <rui.zhang@...el.com>,
        "Rafael J. Wysocki" <rafael.j.wysocki@...el.com>,
        linux-pm@...r.kernel.org, Len Brown <lenb@...nel.org>,
        linux-acpi@...r.kernel.org, kbuild test robot <lkp@...el.com>,
        Nick Hu <nickhu@...estech.com>,
        Greentime Hu <green.hu@...il.com>,
        Vincent Chen <deanbo422@...il.com>,
        Guo Ren <guoren@...nel.org>, linux-csky@...r.kernel.org,
        Brian Cain <bcain@...eaurora.org>,
        linux-hexagon@...r.kernel.org, Tony Luck <tony.luck@...el.com>,
        Fenghua Yu <fenghua.yu@...el.com>, linux-ia64@...r.kernel.org,
        Michal Simek <monstr@...str.eu>,
        Michael Ellerman <mpe@...erman.id.au>,
        Arnd Bergmann <arnd@...db.de>,
        Geoff Levand <geoff@...radead.org>,
        linuxppc-dev@...ts.ozlabs.org, Davidlohr Bueso <dbueso@...e.de>
Subject: [PATCH v2] Documentation/locking/locktypes: minor copy editor fixes

From: Randy Dunlap <rdunlap@...radead.org>

Minor editorial fixes:
- add some hyphens in multi-word adjectives
- add some periods for consistency
- add "'" for possessive CPU's
- capitalize IRQ when it's an acronym and not part of a function name

Signed-off-by: Randy Dunlap <rdunlap@...radead.org>
Cc: Paul McKenney <paulmck@...nel.org>
Cc: Thomas Gleixner <tglx@...utronix.de>
Cc: Sebastian Siewior <bigeasy@...utronix.de>
Cc: Joel Fernandes <joel@...lfernandes.org>
Cc: Ingo Molnar <mingo@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
---
 Documentation/locking/locktypes.rst |   16 ++++++++--------
 1 file changed, 8 insertions(+), 8 deletions(-)

--- linux-next-20200325.orig/Documentation/locking/locktypes.rst
+++ linux-next-20200325/Documentation/locking/locktypes.rst
@@ -84,7 +84,7 @@ rtmutex
 
 RT-mutexes are mutexes with support for priority inheritance (PI).
 
-PI has limitations on non PREEMPT_RT enabled kernels due to preemption and
+PI has limitations on non-PREEMPT_RT-enabled kernels due to preemption and
 interrupt disabled sections.
 
 PI clearly cannot preempt preemption-disabled or interrupt-disabled
@@ -150,7 +150,7 @@ kernel configuration including PREEMPT_R
 
 raw_spinlock_t is a strict spinning lock implementation in all kernels,
 including PREEMPT_RT kernels.  Use raw_spinlock_t only in real critical
-core code, low level interrupt handling and places where disabling
+core code, low-level interrupt handling and places where disabling
 preemption or interrupts is required, for example, to safely access
 hardware state.  raw_spinlock_t can sometimes also be used when the
 critical section is tiny, thus avoiding RT-mutex overhead.
@@ -160,20 +160,20 @@ spinlock_t
 
 The semantics of spinlock_t change with the state of PREEMPT_RT.
 
-On a non PREEMPT_RT enabled kernel spinlock_t is mapped to raw_spinlock_t
+On a non-PREEMPT_RT-enabled kernel spinlock_t is mapped to raw_spinlock_t
 and has exactly the same semantics.
 
 spinlock_t and PREEMPT_RT
 -------------------------
 
-On a PREEMPT_RT enabled kernel spinlock_t is mapped to a separate
+On a PREEMPT_RT-enabled kernel spinlock_t is mapped to a separate
 implementation based on rt_mutex which changes the semantics:
 
- - Preemption is not disabled
+ - Preemption is not disabled.
 
  - The hard interrupt related suffixes for spin_lock / spin_unlock
-   operations (_irq, _irqsave / _irqrestore) do not affect the CPUs
-   interrupt disabled state
+   operations (_irq, _irqsave / _irqrestore) do not affect the CPU's
+   interrupt disabled state.
 
  - The soft interrupt related suffix (_bh()) still disables softirq
    handlers.
@@ -279,7 +279,7 @@ fully preemptible context.  Instead, use
 spin_lock_irqsave() and their unlock counterparts.  In cases where the
 interrupt disabling and locking must remain separate, PREEMPT_RT offers a
 local_lock mechanism.  Acquiring the local_lock pins the task to a CPU,
-allowing things like per-CPU irq-disabled locks to be acquired.  However,
+allowing things like per-CPU IRQ-disabled locks to be acquired.  However,
 this approach should be used only where absolutely necessary.