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| author | Christophe JAILLET <christophe.jaillet@wanadoo.fr> | 2022-07-20 23:26:36 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2022-09-01 18:17:14 +0200 |
| commit | 61742a7cd5b194d2cc52d78de8ec6967634a4cd6 (patch) | |
| tree | 35fcdafc0c2792e250f4f6425000b739e092e47e /lib/dynamic_debug.c | |
| parent | 6bb7ea3afd3eaae95eda6ef5589c3087f2cd70d8 (diff) | |
devres: Slightly optimize alloc_dr()
If the gfp flag used for the memory allocation already has __GFP_ZERO,
then there is no need to explicitly clear the "struct devres_node". It is
already zeroed.
This saves a few cycles when using devm_zalloc() and co.
In the case of devres_alloc() (which calls __devres_alloc_node()), the
compiler could remove the test and the memset() because it should be able
to see that the __GFP_ZERO flag is set.
So this would make the code both faster and smaller.
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Link: https://lore.kernel.org/r/d255bd871484e63cdd628e819f929e2df59afb02.1658352383.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/dynamic_debug.c')
0 files changed, 0 insertions, 0 deletions