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Subject[PATCH RFC PKS/PMEM 08/58] drivers/firmware_loader: Utilize new kmap_thread()
Date
From: Ira Weiny <ira.weiny@intel.com>

The kmap() calls in this driver are localized to a single thread. To
avoid the over head of global PKRS updates use the new kmap_thread()
call.

Cc: Luis Chamberlain <mcgrof@kernel.org>
Signed-off-by: Ira Weiny <ira.weiny@intel.com>
---
drivers/base/firmware_loader/fallback.c | 4 ++--
drivers/base/firmware_loader/main.c | 4 ++--
2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/base/firmware_loader/fallback.c b/drivers/base/firmware_loader/fallback.c
index 283ca2de76d4..22dea9ba7a37 100644
--- a/drivers/base/firmware_loader/fallback.c
+++ b/drivers/base/firmware_loader/fallback.c
@@ -322,14 +322,14 @@ static void firmware_rw(struct fw_priv *fw_priv, char *buffer,
int page_ofs = offset & (PAGE_SIZE-1);
int page_cnt = min_t(size_t, PAGE_SIZE - page_ofs, count);

- page_data = kmap(fw_priv->pages[page_nr]);
+ page_data = kmap_thread(fw_priv->pages[page_nr]);

if (read)
memcpy(buffer, page_data + page_ofs, page_cnt);
else
memcpy(page_data + page_ofs, buffer, page_cnt);

- kunmap(fw_priv->pages[page_nr]);
+ kunmap_thread(fw_priv->pages[page_nr]);
buffer += page_cnt;
offset += page_cnt;
count -= page_cnt;
diff --git a/drivers/base/firmware_loader/main.c b/drivers/base/firmware_loader/main.c
index 63b9714a0154..cc884c9f8742 100644
--- a/drivers/base/firmware_loader/main.c
+++ b/drivers/base/firmware_loader/main.c
@@ -409,11 +409,11 @@ static int fw_decompress_xz_pages(struct device *dev, struct fw_priv *fw_priv,

/* decompress onto the new allocated page */
page = fw_priv->pages[fw_priv->nr_pages - 1];
- xz_buf.out = kmap(page);
+ xz_buf.out = kmap_thread(page);
xz_buf.out_pos = 0;
xz_buf.out_size = PAGE_SIZE;
xz_ret = xz_dec_run(xz_dec, &xz_buf);
- kunmap(page);
+ kunmap_thread(page);
fw_priv->size += xz_buf.out_pos;
/* partial decompression means either end or error */
if (xz_buf.out_pos != PAGE_SIZE)
--
2.28.0.rc0.12.gb6a658bd00c9
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