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author | Ingo Molnar <mingo@kernel.org> | 2014-08-10 08:53:39 +0200 |
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committer | Ingo Molnar <mingo@kernel.org> | 2014-08-10 09:00:16 +0200 |
commit | fd3cbdc0d1b5254a2e8793df58c409b469899a3f (patch) | |
tree | 5bbd9627a009d9cbd05a5b7eb56d0f7d534955a4 /include/linux/jump_label.h | |
parent | f96f56780ca584930bb3a2769d73fd9a101bcbbe (diff) | |
download | lwn-fd3cbdc0d1b5254a2e8793df58c409b469899a3f.tar.gz lwn-fd3cbdc0d1b5254a2e8793df58c409b469899a3f.zip |
jump_label: Fix small typos in the documentation
Was reading through the documentation of this code and noticed
a few typos, missing commas, etc.
Cc: Jason Baron <jbaron@akamai.com>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Steven Rostedt <rostedt@goodmis.org>
Cc: Borislav Petkov <bp@alien8.de>
Cc: Andrew Morton <akpm@linux-foundation.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Mel Gorman <mgorman@suse.de>
Cc: linux-kernel@vger.kernel.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'include/linux/jump_label.h')
-rw-r--r-- | include/linux/jump_label.h | 17 |
1 files changed, 8 insertions, 9 deletions
diff --git a/include/linux/jump_label.h b/include/linux/jump_label.h index 784304b222b3..98f923b6a0ea 100644 --- a/include/linux/jump_label.h +++ b/include/linux/jump_label.h @@ -8,28 +8,28 @@ * Copyright (C) 2011-2012 Peter Zijlstra <pzijlstr@redhat.com> * * Jump labels provide an interface to generate dynamic branches using - * self-modifying code. Assuming toolchain and architecture support the result - * of a "if (static_key_false(&key))" statement is a unconditional branch (which + * self-modifying code. Assuming toolchain and architecture support, the result + * of a "if (static_key_false(&key))" statement is an unconditional branch (which * defaults to false - and the true block is placed out of line). * * However at runtime we can change the branch target using * static_key_slow_{inc,dec}(). These function as a 'reference' count on the key - * object and for as long as there are references all branches referring to + * object, and for as long as there are references all branches referring to * that particular key will point to the (out of line) true block. * - * Since this relies on modifying code the static_key_slow_{inc,dec}() functions + * Since this relies on modifying code, the static_key_slow_{inc,dec}() functions * must be considered absolute slow paths (machine wide synchronization etc.). - * OTOH, since the affected branches are unconditional their runtime overhead + * OTOH, since the affected branches are unconditional, their runtime overhead * will be absolutely minimal, esp. in the default (off) case where the total * effect is a single NOP of appropriate size. The on case will patch in a jump * to the out-of-line block. * - * When the control is directly exposed to userspace it is prudent to delay the + * When the control is directly exposed to userspace, it is prudent to delay the * decrement to avoid high frequency code modifications which can (and do) * cause significant performance degradation. Struct static_key_deferred and * static_key_slow_dec_deferred() provide for this. * - * Lacking toolchain and or architecture support, it falls back to a simple + * Lacking toolchain and or architecture support, jump labels fall back to a simple * conditional branch. * * struct static_key my_key = STATIC_KEY_INIT_TRUE; @@ -43,8 +43,7 @@ * * Not initializing the key (static data is initialized to 0s anyway) is the * same as using STATIC_KEY_INIT_FALSE. - * -*/ + */ #include <linux/types.h> #include <linux/compiler.h> |