| Message ID | 20170316221043.GA29802@credmon.mdns.org (mailing list archive) |
|---|---|
| State | New, archived |
| Headers | show |
On Thu, Mar 16, 2017 at 06:10:43PM -0400, Chris Redmon wrote: > Check if CONFIG_HAVE_HW_BREAKPOINT is enabled before compiling in extra > data required for hardware breakpoints. Compiling out this code when hw > breakpoints are disabled saves about 272 bytes per struct task_struct. > > Signed-off-by: Chris Redmon <credmonster@gmail.com> Queued for 4.12. Thanks.
diff --git a/arch/arm64/include/asm/processor.h b/arch/arm64/include/asm/processor.h index c97b8bd..9428b93 100644 --- a/arch/arm64/include/asm/processor.h +++ b/arch/arm64/include/asm/processor.h @@ -50,6 +50,7 @@ #define ARCH_LOW_ADDRESS_LIMIT (arm64_dma_phys_limit - 1) struct debug_info { +#ifdef CONFIG_HAVE_HW_BREAKPOINT /* Have we suspended stepping by a debugger? */ int suspended_step; /* Allow breakpoints and watchpoints to be disabled for this thread. */ @@ -58,6 +59,7 @@ struct debug_info { /* Hardware breakpoints pinned to this task. */ struct perf_event *hbp_break[ARM_MAX_BRP]; struct perf_event *hbp_watch[ARM_MAX_WRP]; +#endif }; struct cpu_context {
Check if CONFIG_HAVE_HW_BREAKPOINT is enabled before compiling in extra data required for hardware breakpoints. Compiling out this code when hw breakpoints are disabled saves about 272 bytes per struct task_struct. Signed-off-by: Chris Redmon <credmonster@gmail.com> --- arch/arm64/include/asm/processor.h | 2 ++ 1 file changed, 2 insertions(+)