lib/kref.c · 8b5536bbee53620f8d5f367987e5727ba36d886d · KED Software Projects / Miscellaneous / KED Linux Kernel Fork

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19 years ago

[PATCH] kref: avoid an atomic operation in kref_put() · 8b5536bb

Eric Dumazet authored 19 years ago


Avoid an atomic operation in kref_put() when the last reference is
dropped. On most platforms, atomic_read() is a plan read of the counter
and involves no atomic at all.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

8b5536bb

History

[PATCH] kref: avoid an atomic operation in kref_put()

Eric Dumazet authored 19 years ago


Avoid an atomic operation in kref_put() when the last reference is
dropped. On most platforms, atomic_read() is a plan read of the counter
and involves no atomic at all.

Signed-off-by: Eric Dumazet <dada1@cosmosbay.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

kref.c 1.77 KiB