Commit-ID: 772951c4e4b06cdffeff499259dba07b544f3166 Gitweb: http://git.kernel.org/tip/772951c4e4b06cdffeff499259dba07b544f3166 Author: Denys Vlasenko <dvlas...@redhat.com> AuthorDate: Tue, 7 Apr 2015 22:43:40 +0200 Committer: Ingo Molnar <mi...@kernel.org> CommitDate: Thu, 9 Apr 2015 10:31:25 +0200
x86/asm/entry/64: Optimize [v]fork/clone stubs Replace "call func; ret" with "jmp func". Run-tested. Signed-off-by: Denys Vlasenko <dvlas...@redhat.com> Cc: Alexei Starovoitov <a...@plumgrid.com> Cc: Andy Lutomirski <l...@amacapital.net> Cc: Borislav Petkov <b...@alien8.de> Cc: Brian Gerst <brge...@gmail.com> Cc: Frederic Weisbecker <fweis...@gmail.com> Cc: H. Peter Anvin <h...@zytor.com> Cc: Kees Cook <keesc...@chromium.org> Cc: Linus Torvalds <torva...@linux-foundation.org> Cc: Oleg Nesterov <o...@redhat.com> Cc: Steven Rostedt <rost...@goodmis.org> Cc: Thomas Gleixner <t...@linutronix.de> Cc: Will Drewry <w...@chromium.org> Link: http://lkml.kernel.org/r/1428439424-7258-4-git-send-email-dvlas...@redhat.com Signed-off-by: Ingo Molnar <mi...@kernel.org> --- arch/x86/kernel/entry_64.S | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/arch/x86/kernel/entry_64.S b/arch/x86/kernel/entry_64.S index 5380b3a..ce85256 100644 --- a/arch/x86/kernel/entry_64.S +++ b/arch/x86/kernel/entry_64.S @@ -484,8 +484,7 @@ ENTRY(stub_\func) CFI_STARTPROC DEFAULT_FRAME 0, 8 /* offset 8: return address */ SAVE_EXTRA_REGS 8 - call sys_\func - ret + jmp sys_\func CFI_ENDPROC END(stub_\func) .endm -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
