From: Chris Redmon <credmonster@gmail.com>
Date: Thu, 16 Mar 2017 22:10:43 +0000 (-0400)
Subject: arm64: struct debug_info: Check CONFIG_HAVE_HW_BREAKPOINT
X-Git-Tag: v4.14-rc1~917^2~64
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=fda89d9efcabaafcbbb189e969d46dc634574b67;p=platform%2Fkernel%2Flinux-rpi.git

arm64: struct debug_info: Check CONFIG_HAVE_HW_BREAKPOINT

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>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
---

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 @@ extern phys_addr_t arm64_dma_phys_limit;
 #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 {