* [PATCH] drivers/mtd/chips/cfi_cmdset_0020.c: Deinline do_write_buffer, save 5316 bytes
[not found] <1460140543-12487-1-git-send-email-dvlasenk@redhat.com>
@ 2016-04-08 18:35 ` Denys Vlasenko
2016-07-10 1:54 ` Brian Norris
0 siblings, 1 reply; 2+ messages in thread
From: Denys Vlasenko @ 2016-04-08 18:35 UTC (permalink / raw)
To: David Woodhouse
Cc: Denys Vlasenko, Brian Norris, Dan Carpenter, Artem Bityutskiy,
linux-mtd, linux-kernel
This function compiles to 2554 bytes of machine code.
In C, the function is almost 200 lines long.
It has only one callsite, but forced inlining that much code
makes gcc generate significantly worse code. Let gcc itself decide
what to do.
Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
CC: David Woodhouse <David.Woodhouse@intel.com>
CC: Brian Norris <computersforpeace@gmail.com>
CC: Dan Carpenter <dan.carpenter@oracle.com>
CC: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
CC: linux-mtd@lists.infradead.org
CC: linux-kernel@vger.kernel.org
---
drivers/mtd/chips/cfi_cmdset_0020.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mtd/chips/cfi_cmdset_0020.c b/drivers/mtd/chips/cfi_cmdset_0020.c
index 9a1a6ff..70dd2b1 100644
--- a/drivers/mtd/chips/cfi_cmdset_0020.c
+++ b/drivers/mtd/chips/cfi_cmdset_0020.c
@@ -416,7 +416,7 @@ static int cfi_staa_read (struct mtd_info *mtd, loff_t from, size_t len, size_t
return ret;
}
-static inline int do_write_buffer(struct map_info *map, struct flchip *chip,
+static int do_write_buffer(struct map_info *map, struct flchip *chip,
unsigned long adr, const u_char *buf, int len)
{
struct cfi_private *cfi = map->fldrv_priv;
--
2.1.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH] drivers/mtd/chips/cfi_cmdset_0020.c: Deinline do_write_buffer, save 5316 bytes
2016-04-08 18:35 ` [PATCH] drivers/mtd/chips/cfi_cmdset_0020.c: Deinline do_write_buffer, save 5316 bytes Denys Vlasenko
@ 2016-07-10 1:54 ` Brian Norris
0 siblings, 0 replies; 2+ messages in thread
From: Brian Norris @ 2016-07-10 1:54 UTC (permalink / raw)
To: Denys Vlasenko
Cc: David Woodhouse, Dan Carpenter, Artem Bityutskiy, linux-mtd,
linux-kernel
On Fri, Apr 08, 2016 at 08:35:43PM +0200, Denys Vlasenko wrote:
> This function compiles to 2554 bytes of machine code.
> In C, the function is almost 200 lines long.
>
> It has only one callsite, but forced inlining that much code
> makes gcc generate significantly worse code. Let gcc itself decide
> what to do.
>
> Signed-off-by: Denys Vlasenko <dvlasenk@redhat.com>
> CC: David Woodhouse <David.Woodhouse@intel.com>
> CC: Brian Norris <computersforpeace@gmail.com>
> CC: Dan Carpenter <dan.carpenter@oracle.com>
> CC: Artem Bityutskiy <artem.bityutskiy@linux.intel.com>
> CC: linux-mtd@lists.infradead.org
> CC: linux-kernel@vger.kernel.org
Applied to l2-mtd.git
^ permalink raw reply [flat|nested] 2+ messages in thread
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[not found] <1460140543-12487-1-git-send-email-dvlasenk@redhat.com>
2016-04-08 18:35 ` [PATCH] drivers/mtd/chips/cfi_cmdset_0020.c: Deinline do_write_buffer, save 5316 bytes Denys Vlasenko
2016-07-10 1:54 ` Brian Norris
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