From: Ingo Molnar Date: Thu, 17 Jul 2008 11:26:50 +0000 (+0200) Subject: ftrace: fix merge buglet X-Git-Tag: v2.6.27-rc1~1039^2~3 X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=8e9509c827a28e2f365c203c04224f9e9dd1b63a;p=linux-2.6 ftrace: fix merge buglet -tip testing found a bootup hang here: initcall anon_inode_init+0x0/0x130 returned 0 after 0 msecs calling acpi_event_init+0x0/0x57 the bootup should have continued with: initcall acpi_event_init+0x0/0x57 returned 0 after 45 msecs but it hung hard there instead. bisection led to this commit: | commit 5806b81ac1c0c52665b91723fd4146a4f86e386b | Merge: d14c8a6... 6712e29... | Author: Ingo Molnar | Date: Mon Jul 14 16:11:52 2008 +0200 | Merge branch 'auto-ftrace-next' into tracing/for-linus turns out that i made this mistake in the merge: ifdef CONFIG_FTRACE # Do not profile debug utilities CFLAGS_REMOVE_tsc_64.o = -pg CFLAGS_REMOVE_tsc_32.o = -pg those two files got unified meanwhile - so the dont-profile annotation got lost. The proper rule is: CFLAGS_REMOVE_tsc.o = -pg i guess this could have been caught sooner if the CFLAGS_REMOVE* kbuild rule aborted the build if it met a target that does not exist anymore? Signed-off-by: Ingo Molnar --- diff --git a/arch/x86/kernel/Makefile b/arch/x86/kernel/Makefile index 5112c84f54..da140611bb 100644 --- a/arch/x86/kernel/Makefile +++ b/arch/x86/kernel/Makefile @@ -8,8 +8,7 @@ CPPFLAGS_vmlinux.lds += -U$(UTS_MACHINE) ifdef CONFIG_FTRACE # Do not profile debug utilities -CFLAGS_REMOVE_tsc_64.o = -pg -CFLAGS_REMOVE_tsc_32.o = -pg +CFLAGS_REMOVE_tsc.o = -pg CFLAGS_REMOVE_rtc.o = -pg endif