diff options
| author | Takashi Iwai <tiwai@suse.de> | 2019-05-20 11:26:45 +0200 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2019-06-10 19:20:37 +0200 |
| commit | 993f5d11a9631face2bb597826b86f476a9b915b (patch) | |
| tree | 2f775376f5e409dc8e41e368ecdce8fdfdb20fb1 /drivers/base/firmware_loader | |
| parent | 8f58570b98c090a4544ef9eaea1f419706672845 (diff) | |
| download | lwn-993f5d11a9631face2bb597826b86f476a9b915b.tar.gz lwn-993f5d11a9631face2bb597826b86f476a9b915b.zip | |
firmware: Use kvmalloc for page tables
This is a minor optimization to use kvmalloc() variant for allocating
the page table for the SG-buffer. They aren't so big in general, so
kmalloc() would fit often better.
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/base/firmware_loader')
| -rw-r--r-- | drivers/base/firmware_loader/fallback.c | 7 | ||||
| -rw-r--r-- | drivers/base/firmware_loader/main.c | 2 |
2 files changed, 5 insertions, 4 deletions
diff --git a/drivers/base/firmware_loader/fallback.c b/drivers/base/firmware_loader/fallback.c index 8970a5315e85..b5cd96fd0e77 100644 --- a/drivers/base/firmware_loader/fallback.c +++ b/drivers/base/firmware_loader/fallback.c @@ -232,7 +232,7 @@ static int map_fw_priv_pages(struct fw_priv *fw_priv) return -ENOMEM; /* page table is no longer needed after mapping, let's free */ - vfree(fw_priv->pages); + kvfree(fw_priv->pages); fw_priv->pages = NULL; return 0; @@ -397,7 +397,8 @@ static int fw_realloc_pages(struct fw_sysfs *fw_sysfs, int min_size) fw_priv->page_array_size * 2); struct page **new_pages; - new_pages = vmalloc(array_size(new_array_size, sizeof(void *))); + new_pages = kvmalloc_array(new_array_size, sizeof(void *), + GFP_KERNEL); if (!new_pages) { fw_load_abort(fw_sysfs); return -ENOMEM; @@ -406,7 +407,7 @@ static int fw_realloc_pages(struct fw_sysfs *fw_sysfs, int min_size) fw_priv->page_array_size * sizeof(void *)); memset(&new_pages[fw_priv->page_array_size], 0, sizeof(void *) * (new_array_size - fw_priv->page_array_size)); - vfree(fw_priv->pages); + kvfree(fw_priv->pages); fw_priv->pages = new_pages; fw_priv->page_array_size = new_array_size; } diff --git a/drivers/base/firmware_loader/main.c b/drivers/base/firmware_loader/main.c index 083fc3e4f2fd..2e74a1b73dae 100644 --- a/drivers/base/firmware_loader/main.c +++ b/drivers/base/firmware_loader/main.c @@ -276,7 +276,7 @@ void fw_free_paged_buf(struct fw_priv *fw_priv) for (i = 0; i < fw_priv->nr_pages; i++) __free_page(fw_priv->pages[i]); - vfree(fw_priv->pages); + kvfree(fw_priv->pages); fw_priv->pages = NULL; fw_priv->page_array_size = 0; fw_priv->nr_pages = 0; |