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| author | Jinbum Park <jinb.park7@gmail.com> | 2017-12-12 01:20:51 +0100 |
|---|---|---|
| committer | Russell King <rmk+kernel@armlinux.org.uk> | 2017-12-17 23:16:20 +0100 |
| commit | 670431eaacbfa30be59f4ea027a2d9662ddf2bff (patch) | |
| tree | 984f7808115c400fb3aeaebcfb306f3ecc505ad1 | |
| parent | ARM: 8732/1: NOMMU: Allow userspace to access background MPU region (diff) | |
| download | linux-670431eaacbfa30be59f4ea027a2d9662ddf2bff.tar.xz linux-670431eaacbfa30be59f4ea027a2d9662ddf2bff.zip | |
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>
| -rw-r--r-- | arch/arm/kernel/hw_breakpoint.c | 10 |
1 files changed, 5 insertions, 5 deletions
diff --git a/arch/arm/kernel/hw_breakpoint.c b/arch/arm/kernel/hw_breakpoint.c index af2a7f1e3103..629e25152c0d 100644 --- a/arch/arm/kernel/hw_breakpoint.c +++ b/arch/arm/kernel/hw_breakpoint.c @@ -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): \ |