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author | Jason Wessel <jason.wessel@windriver.com> | 2010-11-04 17:33:01 -0500 |
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committer | Frederic Weisbecker <fweisbec@gmail.com> | 2010-11-12 14:51:55 +0100 |
commit | 3c502e7a0255d82621ff25d60cc816624830497e (patch) | |
tree | 1f30638f22ef9ed748fac1f73cb18169efe49ae7 /kernel/wait.c | |
parent | 6c0aca288e726405b01dacb12cac556454d34b2a (diff) | |
download | kernel_samsung_smdk4412-3c502e7a0255d82621ff25d60cc816624830497e.zip kernel_samsung_smdk4412-3c502e7a0255d82621ff25d60cc816624830497e.tar.gz kernel_samsung_smdk4412-3c502e7a0255d82621ff25d60cc816624830497e.tar.bz2 |
perf,hw_breakpoint: Initialize hardware api earlier
When using early debugging, the kernel does not initialize the
hw_breakpoint API early enough and causes the late initialization of
the kernel debugger to fail. The boot arguments are:
earlyprintk=vga ekgdboc=kbd kgdbwait
Then simply type "go" at the kdb prompt and boot. The kernel will
later emit the message:
kgdb: Could not allocate hwbreakpoints
And at that point the kernel debugger will cease to work correctly.
The solution is to initialize the hw_breakpoint at the same time that
all the other perf call backs are initialized instead of using a
core_initcall() initialization which happens well after the kernel
debugger can make use of hardware breakpoints.
Signed-off-by: Jason Wessel <jason.wessel@windriver.com>
CC: Frederic Weisbecker <fweisbec@gmail.com>
CC: Ingo Molnar <mingo@elte.hu>
CC: Peter Zijlstra <a.p.zijlstra@chello.nl>
LKML-Reference: <4CD3396D.1090308@windriver.com>
Signed-off-by: Frederic Weisbecker <fweisbec@gmail.com>
Diffstat (limited to 'kernel/wait.c')
0 files changed, 0 insertions, 0 deletions