[PATCH 1/2] cxl: Use the bitmap API to allocate bitmaps
Christophe JAILLET
christophe.jaillet at wanadoo.fr
Tue Jul 12 05:14:38 AEST 2022
Use bitmap_zalloc()/bitmap_free() instead of hand-writing them.
It is less verbose and it improves the semantic.
Signed-off-by: Christophe JAILLET <christophe.jaillet at wanadoo.fr>
---
drivers/misc/cxl/context.c | 2 +-
drivers/misc/cxl/guest.c | 2 +-
drivers/misc/cxl/irq.c | 3 +--
drivers/misc/cxl/of.c | 5 ++---
4 files changed, 5 insertions(+), 7 deletions(-)
diff --git a/drivers/misc/cxl/context.c b/drivers/misc/cxl/context.c
index e627b4056623..acaa44809c58 100644
--- a/drivers/misc/cxl/context.c
+++ b/drivers/misc/cxl/context.c
@@ -331,7 +331,7 @@ static void reclaim_ctx(struct rcu_head *rcu)
__free_page(ctx->ff_page);
ctx->sstp = NULL;
- kfree(ctx->irq_bitmap);
+ bitmap_free(ctx->irq_bitmap);
/* Drop ref to the afu device taken during cxl_context_init */
cxl_afu_put(ctx->afu);
diff --git a/drivers/misc/cxl/guest.c b/drivers/misc/cxl/guest.c
index 3321c014913c..375f692ae9d6 100644
--- a/drivers/misc/cxl/guest.c
+++ b/drivers/misc/cxl/guest.c
@@ -1053,7 +1053,7 @@ static void free_adapter(struct cxl *adapter)
if (adapter->guest->irq_avail) {
for (i = 0; i < adapter->guest->irq_nranges; i++) {
cur = &adapter->guest->irq_avail[i];
- kfree(cur->bitmap);
+ bitmap_free(cur->bitmap);
}
kfree(adapter->guest->irq_avail);
}
diff --git a/drivers/misc/cxl/irq.c b/drivers/misc/cxl/irq.c
index 5f0e2dcebb34..0ce91d99aead 100644
--- a/drivers/misc/cxl/irq.c
+++ b/drivers/misc/cxl/irq.c
@@ -319,8 +319,7 @@ int afu_allocate_irqs(struct cxl_context *ctx, u32 count)
}
ctx->irq_count = count;
- ctx->irq_bitmap = kcalloc(BITS_TO_LONGS(count),
- sizeof(*ctx->irq_bitmap), GFP_KERNEL);
+ ctx->irq_bitmap = bitmap_zalloc(count, GFP_KERNEL);
if (!ctx->irq_bitmap)
goto out;
diff --git a/drivers/misc/cxl/of.c b/drivers/misc/cxl/of.c
index 1cfecba42d01..25ce725035e7 100644
--- a/drivers/misc/cxl/of.c
+++ b/drivers/misc/cxl/of.c
@@ -308,8 +308,7 @@ static int read_adapter_irq_config(struct cxl *adapter, struct device_node *np)
cur = &adapter->guest->irq_avail[i];
cur->offset = be32_to_cpu(ranges[i * 2]);
cur->range = be32_to_cpu(ranges[i * 2 + 1]);
- cur->bitmap = kcalloc(BITS_TO_LONGS(cur->range),
- sizeof(*cur->bitmap), GFP_KERNEL);
+ cur->bitmap = bitmap_zalloc(cur->range, GFP_KERNEL);
if (cur->bitmap == NULL)
goto err;
if (cur->offset < adapter->guest->irq_base_offset)
@@ -326,7 +325,7 @@ static int read_adapter_irq_config(struct cxl *adapter, struct device_node *np)
err:
for (i--; i >= 0; i--) {
cur = &adapter->guest->irq_avail[i];
- kfree(cur->bitmap);
+ bitmap_free(cur->bitmap);
}
kfree(adapter->guest->irq_avail);
adapter->guest->irq_avail = NULL;
--
2.34.1
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