On Thu, 27 Feb 2020 at 05:56, Rasmus Villemoes rasmus.villemoes@prevas.dk wrote:
The callback member of struct env_entry is always NULL for an SPL build. Removing it thus saves a bit of run-time memory in the SPL (when CONFIG_SPL_ENV_SUPPORT=y) since struct env_entry is embedded in struct env_entry_node - i.e. about 2KB for the normal case of 512+change hash table entries.
Two small fixups are needed for this, all other references to the callback member are already under !CONFIG_SPL_BUILD: Don't initialize .callback in set_flags() - hsearch_r doesn't use that value anyway. And make env_callback_init() initialize ->callback to NULL for a new entry instead of relying on an unused or deleted entry having NULL in ->callback.
Signed-off-by: Rasmus Villemoes rasmus.villemoes@prevas.dk
env/callback.c | 2 ++ env/flags.c | 1 - include/search.h | 2 ++ lib/hashtable.c | 1 - 4 files changed, 4 insertions(+), 2 deletions(-)
Reviewed-by: Simon Glass sjg@chromium.org