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| author | Ravi Bangoria <ravi.bangoria@linux.ibm.com> | 2020-05-14 16:47:32 +0530 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-05-19 00:11:04 +1000 |
| commit | c2919132734f29a7a33e1339bef8a67b11f322eb (patch) | |
| tree | b8ac2117f7cc5599d21db99f91973295a93e75d6 | |
| parent | 4a8a9379f2af4c9928529b3959bc2d8f7023c6bc (diff) | |
| download | linux-c2919132734f29a7a33e1339bef8a67b11f322eb.tar.gz linux-c2919132734f29a7a33e1339bef8a67b11f322eb.tar.bz2 linux-c2919132734f29a7a33e1339bef8a67b11f322eb.zip | |
powerpc/watchpoint: Get watchpoint count dynamically while disabling them
Instead of disabling only one watchpoint, get num of available
watchpoints dynamically and disable all of them.
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/20200514111741.97993-8-ravi.bangoria@linux.ibm.com
| -rw-r--r-- | arch/powerpc/include/asm/hw_breakpoint.h | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/arch/powerpc/include/asm/hw_breakpoint.h b/arch/powerpc/include/asm/hw_breakpoint.h index 1120c7d9db58..d472b2eb757e 100644 --- a/arch/powerpc/include/asm/hw_breakpoint.h +++ b/arch/powerpc/include/asm/hw_breakpoint.h @@ -78,14 +78,14 @@ extern void ptrace_triggered(struct perf_event *bp, struct perf_sample_data *data, struct pt_regs *regs); static inline void hw_breakpoint_disable(void) { - struct arch_hw_breakpoint brk; - - brk.address = 0; - brk.type = 0; - brk.len = 0; - brk.hw_len = 0; - if (ppc_breakpoint_available()) - __set_breakpoint(0, &brk); + int i; + struct arch_hw_breakpoint null_brk = {0}; + + if (!ppc_breakpoint_available()) + return; + + for (i = 0; i < nr_wp_slots(); i++) + __set_breakpoint(i, &null_brk); } extern void thread_change_pc(struct task_struct *tsk, struct pt_regs *regs); int hw_breakpoint_handler(struct die_args *args); |