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powerpc/watchpoint: Provide DAWR number to __set_breakpoint

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Introduce new parameter 'nr' to __set_breakpoint() which indicates
which DAWR should be programed. Also convert current_brk variable
to an array.

Signed-off-by: Ravi Bangoria <ravi.bangoria@linux.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Reviewed-by: Michael Neuling <mikey@neuling.org>
Link: https://lore.kernel.org/r/20200514111741.97993-7-ravi.bangoria@linux.ibm.com
This commit is contained in:
Ravi Bangoria
2020-05-14 16:47:31 +05:30
committed by Michael Ellerman
parent a18b834625
commit 4a8a9379f2
6 changed files with 15 additions and 15 deletions
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arch/powerpc/kernel/signal.c
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@@ -272,7 +272,7 @@ static void do_signal(struct task_struct *tsk)
* triggered inside the kernel.
*/
if (tsk->thread.hw_brk.address && tsk->thread.hw_brk.type)
__set_breakpoint(&tsk->thread.hw_brk);
__set_breakpoint(0, &tsk->thread.hw_brk);
#endif
/* Re-enable the breakpoints for the signal stack */
thread_change_pc(tsk, tsk->thread.regs);