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ARM: 8733/1: hw_breakpoint: Mark variables as __ro_after_init 

core_num_brps, core_num_wrps, debug_arch, has_ossr,
max_watchpoint_len are setup once while init stage,
and never changed after that.
so it is good candidate for __ro_after_init.

Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Jinbum Park <jinb.park7@gmail.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
This commit is contained in:
Jinbum Park 2017-12-12 01:20:51 +01:00 committed by Russell King
parent 7710cc691c
commit 670431eaac
1 changed files with 5 additions and 5 deletions
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10
arch/arm/kernel/hw_breakpoint.c
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@ -44,17 +44,17 @@ static DEFINE_PER_CPU(struct perf_event *, bp_on_reg[ARM_MAX_BRP]);
static DEFINE_PER_CPU(struct perf_event *, wp_on_reg[ARM_MAX_WRP]);
/* Number of BRP/WRP registers on this CPU. */
static int core_num_brps;
static int core_num_wrps;
static int core_num_brps __ro_after_init;
static int core_num_wrps __ro_after_init;
/* Debug architecture version. */
static u8 debug_arch;
static u8 debug_arch __ro_after_init;
/* Does debug architecture support OS Save and Restore? */
static bool has_ossr;
static bool has_ossr __ro_after_init;
/* Maximum supported watchpoint length. */
static u8 max_watchpoint_len;
static u8 max_watchpoint_len __ro_after_init;
#define READ_WB_REG_CASE(OP2, M, VAL) \
case ((OP2 << 4) + M): \