From e4955c9986a27bb47ddeb6cd55803053f547e2e9 Mon Sep 17 00:00:00 2001 From: Li Zefan Date: Tue, 24 Mar 2009 16:04:37 +0800 Subject: [PATCH] blktrace: mark ddir_act[] const Impact: cleanup ddir_act and what2act always stay immutable. Signed-off-by: Li Zefan Acked-by: Jens Axboe Cc: Steven Rostedt Cc: Frederic Weisbecker Cc: Arnaldo Carvalho de Melo LKML-Reference: <49C89415.5080503@cn.fujitsu.com> Signed-off-by: Ingo Molnar --- kernel/trace/blktrace.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/kernel/trace/blktrace.c b/kernel/trace/blktrace.c index 108f4f7715a5..1ffcbd4ac45b 100644 --- a/kernel/trace/blktrace.c +++ b/kernel/trace/blktrace.c @@ -147,8 +147,8 @@ static int act_log_check(struct blk_trace *bt, u32 what, sector_t sector, /* * Data direction bit lookup */ -static u32 ddir_act[2] __read_mostly = { BLK_TC_ACT(BLK_TC_READ), - BLK_TC_ACT(BLK_TC_WRITE) }; +static const u32 ddir_act[2] = { BLK_TC_ACT(BLK_TC_READ), + BLK_TC_ACT(BLK_TC_WRITE) }; /* The ilog2() calls fall out because they're constant */ #define MASK_TC_BIT(rw, __name) ((rw & (1 << BIO_RW_ ## __name)) << \ @@ -1116,10 +1116,10 @@ static void blk_tracer_reset(struct trace_array *tr) blk_tracer_stop(tr); } -static struct { +static const struct { const char *act[2]; int (*print)(struct trace_seq *s, const struct trace_entry *ent); -} what2act[] __read_mostly = { +} what2act[] = { [__BLK_TA_QUEUE] = {{ "Q", "queue" }, blk_log_generic }, [__BLK_TA_BACKMERGE] = {{ "M", "backmerge" }, blk_log_generic }, [__BLK_TA_FRONTMERGE] = {{ "F", "frontmerge" }, blk_log_generic },