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Using counter->priv is a memory read and so more expensive than
container_of which is only an addition. (In this case even a noop
because the offset is 0.)
So container_of is expected to be a tad faster, it's type-safe, and
produces smaller code (ARCH=arm allmodconfig):
$ source/scripts/bloat-o-meter drivers/counter/ti-eqep.o-pre drivers/counter/ti-eqep.o
add/remove: 0/0 grow/shrink: 0/9 up/down: 0/-108 (-108)
Function old new delta
ti_eqep_position_enable_write 132 120 -12
ti_eqep_position_enable_read 260 248 -12
ti_eqep_position_ceiling_write 132 120 -12
ti_eqep_position_ceiling_read 236 224 -12
ti_eqep_function_write 220 208 -12
ti_eqep_function_read 372 360 -12
ti_eqep_count_write 312 300 -12
ti_eqep_count_read 236 224 -12
ti_eqep_action_read 664 652 -12
Total: Before=4598, After=4490, chg -2.35%
Acked-by: David Lechner <david@lechnology.com>
Signed-off-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
Signed-off-by: William Breathitt Gray <vilhelm.gray@gmail.com>
Link: https://lore.kernel.org/r/4bde7cbd9e43a5909208102094444219d3154466.1640072891.git.vilhelm.gray@gmail.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
60f07e74f8