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| author | Ingo Molnar <mingo@elte.hu> | 2006-03-23 02:59:29 -0800 |
|---|---|---|
| committer | Linus Torvalds <torvalds@g5.osdl.org> | 2006-03-23 07:38:03 -0800 |
| commit | b824eb605ccba995fd32c6590aed365f93d48002 (patch) | |
| tree | f5720240b044b46ac83e127e2c5586cd8ef2ed75 | |
| parent | 69ef4141e03fab1c6956d3c760584c72b548a26f (diff) | |
| download | linux-b824eb605ccba995fd32c6590aed365f93d48002.tar.gz | |
[PATCH] Make CONFIG_REGPARM enabled by default
Make CONFIG_REGPARM enabled by default. It's a noticable win both for size
and for performance, and gcc[34] handles it correctly.
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
| -rw-r--r-- | arch/i386/Kconfig | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/arch/i386/Kconfig b/arch/i386/Kconfig index 69c8a70e854bc2..5f89c74537ef29 100644 --- a/arch/i386/Kconfig +++ b/arch/i386/Kconfig @@ -661,9 +661,17 @@ config BOOT_IOREMAP config REGPARM bool "Use register arguments" + default y help - Compile the kernel with -mregparm=3. This uses a different ABI - and passes the first three arguments of a function call in registers. + Compile the kernel with -mregparm=3. This instructs gcc to use + a more efficient function call ABI which passes the first three + arguments of a function call via registers, which results in denser + and faster code. + + If this option is disabled, then the default ABI of passing + arguments via the stack is used. + + If unsure, say Y. config SECCOMP bool "Enable seccomp to safely compute untrusted bytecode" |