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    ftrace: fix merge buglet · 8e9509c8
    Ingo Molnar 提交于
    -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 5806b81a
    | Merge: d14c8a68... 6712e299...
    | Author: Ingo Molnar <mingo@elte.hu>
    | 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: NIngo Molnar <mingo@elte.hu>
    8e9509c8
Makefile 3.7 KB