The patch titled
Subject: bitops: replace for_each_*_bit_from() with for_each_*_bit() where appropriate
has been added to the -mm tree. Its filename is
replace-for_each__bit_from-with-for_each__bit-where-appropriate.patch
This patch should soon appear at
https://ozlabs.org/~akpm/mmots/broken-out/replace-for_each__bit_from-with-for_each__bit-where-appropriate.patch
and later at
https://ozlabs.org/~akpm/mmotm/broken-out/replace-for_each__bit_from-with-for_each__bit-where-appropriate.patch
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------------------------------------------------------
From: Yury Norov <yury.norov@xxxxxxxxx>
Subject: bitops: replace for_each_*_bit_from() with for_each_*_bit() where appropriate
A couple of kernel functions call for_each_*_bit_from() with start bit
equal to 0. Replace them with for_each_*_bit().
No functional changes, but might improve on readability.
Link: https://lkml.kernel.org/r/20210814211713.180533-13-yury.norov@xxxxxxxxx
Signed-off-by: Yury Norov <yury.norov@xxxxxxxxx>
Tested-by: Wolfram Sang <wsa+renesas@xxxxxxxxxxxxxxxxxxxx>
Cc: Alexander Lobakin <alobakin@xxxxx>
Cc: Alexey Klimov <aklimov@xxxxxxxxxx>
Cc: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Cc: Dennis Zhou <dennis@xxxxxxxxxx>
Cc: Jiri Olsa <jolsa@xxxxxxxxxx>
Cc: kernel test robot <lkp@xxxxxxxxx>
Cc: Ulf Hansson <ulf.hansson@xxxxxxxxxx>
Cc: Will Deacon <will@xxxxxxxxxx>
Signed-off-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
---
arch/x86/kernel/apic/vector.c | 4 ++--
drivers/gpu/drm/etnaviv/etnaviv_gpu.c | 4 ++--
drivers/hwmon/ltc2992.c | 3 +--
3 files changed, 5 insertions(+), 6 deletions(-)
--- a/arch/x86/kernel/apic/vector.c~replace-for_each__bit_from-with-for_each__bit-where-appropriate
+++ a/arch/x86/kernel/apic/vector.c
@@ -760,9 +760,9 @@ void __init lapic_update_legacy_vectors(
void __init lapic_assign_system_vectors(void)
{
- unsigned int i, vector = 0;
+ unsigned int i, vector;
- for_each_set_bit_from(vector, system_vectors, NR_VECTORS)
+ for_each_set_bit(vector, system_vectors, NR_VECTORS)
irq_matrix_assign_system(vector_matrix, vector, false);
if (nr_legacy_irqs() > 1)
--- a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c~replace-for_each__bit_from-with-for_each__bit-where-appropriate
+++ a/drivers/gpu/drm/etnaviv/etnaviv_gpu.c
@@ -1032,7 +1032,7 @@ pm_put:
void etnaviv_gpu_recover_hang(struct etnaviv_gpu *gpu)
{
- unsigned int i = 0;
+ unsigned int i;
dev_err(gpu->dev, "recover hung GPU!\n");
@@ -1045,7 +1045,7 @@ void etnaviv_gpu_recover_hang(struct etn
/* complete all events, the GPU won't do it after the reset */
spin_lock(&gpu->event_spinlock);
- for_each_set_bit_from(i, gpu->event_bitmap, ETNA_NR_EVENTS)
+ for_each_set_bit(i, gpu->event_bitmap, ETNA_NR_EVENTS)
complete(&gpu->event_free);
bitmap_zero(gpu->event_bitmap, ETNA_NR_EVENTS);
spin_unlock(&gpu->event_spinlock);
--- a/drivers/hwmon/ltc2992.c~replace-for_each__bit_from-with-for_each__bit-where-appropriate
+++ a/drivers/hwmon/ltc2992.c
@@ -248,8 +248,7 @@ static int ltc2992_gpio_get_multiple(str
gpio_status = reg;
- gpio_nr = 0;
- for_each_set_bit_from(gpio_nr, mask, LTC2992_GPIO_NR) {
+ for_each_set_bit(gpio_nr, mask, LTC2992_GPIO_NR) {
if (test_bit(LTC2992_GPIO_BIT(gpio_nr), &gpio_status))
set_bit(gpio_nr, bits);
}
_
Patches currently in -mm which might be from yury.norov@xxxxxxxxx are
bitops-protect-find_first_zero_bit-properly.patch
bitops-move-find_bit__le-functions-from-leh-to-findh.patch
include-move-findh-from-asm_generic-to-linux.patch
arch-remove-generic_find_first_bit-entirely.patch
lib-add-find_first_and_bit.patch
cpumask-use-find_first_and_bit.patch
all-replace-find_next_zero_bit-with-find_first_zero_bit-where-appropriate.patch
tools-sync-tools-bitmap-with-mother-linux.patch
cpumask-replace-cpumask_next_-with-cpumask_first_-where-appropriate.patch
include-linux-move-for_each_bit-macros-from-bitopsh-to-findh.patch
find-micro-optimize-for_each_setclear_bit.patch
replace-for_each__bit_from-with-for_each__bit-where-appropriate.patch
mm-percpu-micro-optimize-pcpu_is_populated.patch
bitmap-unify-find_bit-operations.patch
lib-bitmap-add-performance-test-for-bitmap_print_to_pagebuf.patch
vsprintf-rework-bitmap_list_string.patch
