list: add hlist_count_nodes()
Add a generic hlist_count_nodes() function and use it in two drivers. This patch (of 3): Add a function to count nodes in a hlist. hlist_count_nodes() is similar to list_count_nodes(). Link: https://lkml.kernel.org/r/20240104164937.424320-1-pierre.gondois@arm.com Link: https://lkml.kernel.org/r/20240104164937.424320-2-pierre.gondois@arm.com Signed-off-by: Pierre Gondois <pierre.gondois@arm.com> Reviewed-by: Carlos Llamas <cmllamas@google.com> Acked-by: Coly Li <colyli@suse.de> Acked-by: Marco Elver <elver@google.com> Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: Arve Hjønnevåg <arve@android.com> Cc: Christian Brauner <brauner@kernel.org> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Ingo Molnar <mingo@kernel.org> Cc: Jani Nikula <jani.nikula@intel.com> Cc: Joel Fernandes (Google) <joel@joelfernandes.org> Cc: Kees Cook <keescook@chromium.org> Cc: Kent Overstreet <kent.overstreet@gmail.com> Cc: Martijn Coenen <maco@android.com> Cc: Suren Baghdasaryan <surenb@google.com> Cc: Todd Kjos <tkjos@android.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
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@ -1195,4 +1195,19 @@ static inline void hlist_splice_init(struct hlist_head *from,
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pos && ({ n = pos->member.next; 1; }); \
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pos = hlist_entry_safe(n, typeof(*pos), member))
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/**
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* hlist_count_nodes - count nodes in the hlist
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* @head: the head for your hlist.
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*/
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static inline size_t hlist_count_nodes(struct hlist_head *head)
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{
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struct hlist_node *pos;
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size_t count = 0;
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hlist_for_each(pos, head)
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count++;
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return count;
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}
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#endif
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