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| author | Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com> | 2013-08-30 12:25:10 +0200 |
|---|---|---|
| committer | Rafael J. Wysocki <rafael.j.wysocki@intel.com> | 2013-09-24 01:42:58 +0200 |
| commit | eba682a5aeb6c9bf08a9751f8d3ecafe043d8f88 (patch) | |
| tree | 5894d674aa5bfb39a771374df957f4118071b914 /drivers/idle | |
| parent | 4a10c2ac2f368583138b774ca41fac4207911983 (diff) | |
| download | lwn-eba682a5aeb6c9bf08a9751f8d3ecafe043d8f88.tar.gz lwn-eba682a5aeb6c9bf08a9751f8d3ecafe043d8f88.zip | |
intel_idle: shrink states tables
There is no reason to define CPUIDLE_STATE_MAX (currently 10) entries
in states tables if the driver always stops iterating over table when
it encounters first .enter == NULL entry.
$ size drivers/idle/intel_idle.o.*
text data bss dec hex filename
2886 5440 32 8358 20a6 drivers/idle/intel_idle.o.before
2886 3752 32 6670 1a0e drivers/idle/intel_idle.o.after
Signed-off-by: Bartlomiej Zolnierkiewicz <b.zolnierkie@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Daniel Lezcano <daniel.lezcano@linaro.org>
Signed-off-by: Rafael J. Wysocki <rafael.j.wysocki@intel.com>
Diffstat (limited to 'drivers/idle')
| -rw-r--r-- | drivers/idle/intel_idle.c | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/drivers/idle/intel_idle.c b/drivers/idle/intel_idle.c index fa6964d8681a..9c97fbb426df 100644 --- a/drivers/idle/intel_idle.c +++ b/drivers/idle/intel_idle.c @@ -123,7 +123,7 @@ static struct cpuidle_state *cpuidle_state_table; * which is also the index into the MWAIT hint array. * Thus C0 is a dummy. */ -static struct cpuidle_state nehalem_cstates[CPUIDLE_STATE_MAX] = { +static struct cpuidle_state nehalem_cstates[] = { { .name = "C1-NHM", .desc = "MWAIT 0x00", @@ -156,7 +156,7 @@ static struct cpuidle_state nehalem_cstates[CPUIDLE_STATE_MAX] = { .enter = NULL } }; -static struct cpuidle_state snb_cstates[CPUIDLE_STATE_MAX] = { +static struct cpuidle_state snb_cstates[] = { { .name = "C1-SNB", .desc = "MWAIT 0x00", @@ -196,7 +196,7 @@ static struct cpuidle_state snb_cstates[CPUIDLE_STATE_MAX] = { .enter = NULL } }; -static struct cpuidle_state ivb_cstates[CPUIDLE_STATE_MAX] = { +static struct cpuidle_state ivb_cstates[] = { { .name = "C1-IVB", .desc = "MWAIT 0x00", @@ -236,7 +236,7 @@ static struct cpuidle_state ivb_cstates[CPUIDLE_STATE_MAX] = { .enter = NULL } }; -static struct cpuidle_state hsw_cstates[CPUIDLE_STATE_MAX] = { +static struct cpuidle_state hsw_cstates[] = { { .name = "C1-HSW", .desc = "MWAIT 0x00", @@ -297,7 +297,7 @@ static struct cpuidle_state hsw_cstates[CPUIDLE_STATE_MAX] = { .enter = NULL } }; -static struct cpuidle_state atom_cstates[CPUIDLE_STATE_MAX] = { +static struct cpuidle_state atom_cstates[] = { { .name = "C1E-ATM", .desc = "MWAIT 0x00", @@ -628,7 +628,7 @@ static int intel_idle_cpu_init(int cpu) int num_substates, mwait_hint, mwait_cstate, mwait_substate; if (cpuidle_state_table[cstate].enter == NULL) - continue; + break; if (cstate + 1 > max_cstate) { printk(PREFIX "max_cstate %d reached\n", max_cstate); |