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pie: rearrange structure members and their initializations

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Rearrange the members of the structure such that closely
referenced members appear together and/or fit in the same
cacheline. Also, change the order of their initializations to
match the order in which they appear in the structure.

Signed-off-by: Mohit P. Tahiliani <tahiliani@nitk.edu.in>
Signed-off-by: Leslie Monis <lesliemonis@gmail.com>
Signed-off-by: Gautam Ramakrishnan <gautamramk@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Mohit P. Tahiliani 2020-01-22 23:52:28 +05:30 committed by David S. Miller
parent 1dbfc5e071
commit 2dfb1952a9
2 changed files with 12 additions and 12 deletions
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22
include/net/pie.h
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@ -28,13 +28,13 @@ struct pie_params {
/* variables used */
struct pie_vars {
u64 prob; /* probability but scaled by u64 limit. */
psched_time_t burst_time;
psched_time_t qdelay;
psched_time_t qdelay_old;
u64 dq_count; /* measured in bytes */
psched_time_t burst_time;
psched_time_t dq_tstamp; /* drain rate */
u64 prob; /* probability but scaled by u64 limit. */
u64 accu_prob; /* accumulated drop probability */
u64 dq_count; /* measured in bytes */
u32 avg_dq_rate; /* bytes per pschedtime tick,scaled */
u32 qlen_old; /* in bytes */
u8 accu_prob_overflows; /* overflows of accu_prob */
@ -45,8 +45,8 @@ struct pie_stats {
u32 packets_in; /* total number of packets enqueued */
u32 dropped; /* packets dropped due to pie_action */
u32 overlimit; /* dropped due to lack of space in queue */
u32 maxq; /* maximum queue size */
u32 ecn_mark; /* packets marked with ECN */
u32 maxq; /* maximum queue size */
};
/* private skb vars */
@ -56,11 +56,11 @@ struct pie_skb_cb {
static inline void pie_params_init(struct pie_params *params)
{
params->alpha = 2;
params->beta = 20;
params->target = PSCHED_NS2TICKS(15 * NSEC_PER_MSEC); /* 15 ms */
params->tupdate = usecs_to_jiffies(15 * USEC_PER_MSEC); /* 15 ms */
params->limit = 1000; /* default of 1000 packets */
params->target = PSCHED_NS2TICKS(15 * NSEC_PER_MSEC); /* 15 ms */
params->alpha = 2;
params->beta = 20;
params->ecn = false;
params->bytemode = false;
params->dq_rate_estimator = false;
@ -68,12 +68,12 @@ static inline void pie_params_init(struct pie_params *params)
static inline void pie_vars_init(struct pie_vars *vars)
{
vars->dq_count = DQCOUNT_INVALID;
vars->dq_tstamp = DTIME_INVALID;
vars->accu_prob = 0;
vars->avg_dq_rate = 0;
/* default of 150 ms in pschedtime */
vars->burst_time = PSCHED_NS2TICKS(150 * NSEC_PER_MSEC);
vars->dq_tstamp = DTIME_INVALID;
vars->accu_prob = 0;
vars->dq_count = DQCOUNT_INVALID;
vars->avg_dq_rate = 0;
vars->accu_prob_overflows = 0;
}

2
net/sched/sch_pie.c
View File

@ -23,8 +23,8 @@
/* private data for the Qdisc */
struct pie_sched_data {
struct pie_params params;
struct pie_vars vars;
struct pie_params params;
struct pie_stats stats;
struct timer_list adapt_timer;
struct Qdisc *sch;