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authorFrederic Weisbecker <fweisbec@gmail.com>2009-02-20 17:34:06 +0100
committerIngo Molnar <mingo@elte.hu>2009-02-20 19:30:04 +0100
commit91f73f90d97fa67effbb49e0a79c50cf26dfe324 (patch)
tree8b76397e3bf252c295547494872df6f1d6626023 /init
parent64b36ca7f408e0bd45487c8c28f168f11f3b6dcd (diff)
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tracing/markers: make markers select tracepoints
Sometimes it happens that KConfig dependencies are not handled like in the following scenario: - config A bool - config B bool depends on A - config C bool select B If one selects C, then it will select B without checking its dependency to A, if A hasn't been selected elsewhere, it will result in a build failure. This is what happens on the following build error: kernel/built-in.o: In function `marker_update_probe_range': (.text+0x52f64): undefined reference to `tracepoint_probe_register_noupdate' kernel/built-in.o: In function `marker_update_probe_range': (.text+0x52f74): undefined reference to `tracepoint_probe_unregister_noupdate' kernel/built-in.o: In function `marker_update_probe_range': (.text+0x52fb9): undefined reference to `tracepoint_probe_unregister_noupdate' kernel/built-in.o: In function `marker_update_probes': marker.c:(.text+0x530ba): undefined reference to `tracepoint_probe_update_all' CONFIG_KVM_TRACE will select CONFIG_MARKER, but the latter depends on CONFIG_TRACEPOINTS which will not be selected. Reported-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'init')
-rw-r--r--init/Kconfig2
1 files changed, 1 insertions, 1 deletions
diff --git a/init/Kconfig b/init/Kconfig
index f068071fcc5..26b5bab6f6e 100644
--- a/init/Kconfig
+++ b/init/Kconfig
@@ -945,7 +945,7 @@ config TRACEPOINTS
config MARKERS
bool "Activate markers"
- depends on TRACEPOINTS
+ select TRACEPOINTS
help
Place an empty function call at each marker site. Can be
dynamically changed for a probe function.