* [PATCH] genhd: remove useless cast in diskstats_show()
@ 2011-04-14 1:10 Herbert Poetzl
0 siblings, 0 replies; 2+ messages in thread
From: Herbert Poetzl @ 2011-04-14 1:10 UTC (permalink / raw)
To: linux-kernel
This patch removes the (unsigned long long) cast in
diskstats_show() and adjusts the seq_printf() format
string to 'unsigned long'
diskstats_show() uses part_stat_read() to get the
stats, which either accesses the specified field in
the struct disk_stats directly (non SMP) or sums
up the per CPU values in a variable of the same
type as the field, so in any case the result will
have the same type and range as the specified field
which for all disk_stats entries is unsigned long
also, for unsigned long ranges the output of %lu
should be identical to the one of %llu, so no cange
in teh actual proc entry contents
best,
Herbert
Signed-off-by: Herbert Poetzl <herbert@13thfloor.at>
---
--- linux/block/genhd.c 2011-03-07 16:53:26.000000000 +0100
+++ linux/block/genhd.c 2011-04-14 03:36:35.000000000 +0200
@@ -1154,17 +1154,17 @@ static int diskstats_show(struct seq_fil
cpu = part_stat_lock();
part_round_stats(cpu, hd);
part_stat_unlock();
- seq_printf(seqf, "%4d %7d %s %lu %lu %llu "
- "%u %lu %lu %llu %u %u %u %u\n",
+ seq_printf(seqf, "%4d %7d %s %lu %lu %lu "
+ "%u %lu %lu %lu %u %u %u %u\n",
MAJOR(part_devt(hd)), MINOR(part_devt(hd)),
disk_name(gp, hd->partno, buf),
part_stat_read(hd, ios[0]),
part_stat_read(hd, merges[0]),
- (unsigned long long)part_stat_read(hd, sectors[0]),
+ part_stat_read(hd, sectors[0]),
jiffies_to_msecs(part_stat_read(hd, ticks[0])),
part_stat_read(hd, ios[1]),
part_stat_read(hd, merges[1]),
- (unsigned long long)part_stat_read(hd, sectors[1]),
+ part_stat_read(hd, sectors[1]),
jiffies_to_msecs(part_stat_read(hd, ticks[1])),
part_in_flight(hd),
jiffies_to_msecs(part_stat_read(hd, io_ticks)),
^ permalink raw reply [flat|nested] 2+ messages in thread
* [PATCH] genhd: remove useless cast in diskstats_show()
@ 2011-06-13 11:15 Herbert Poetzl
0 siblings, 0 replies; 2+ messages in thread
From: Herbert Poetzl @ 2011-06-13 11:15 UTC (permalink / raw)
To: Linux Kernel ML
This patch removes the (unsigned long long) cast in
diskstats_show() and adjusts the seq_printf() format
string to 'unsigned long'
diskstats_show() uses part_stat_read() to get the
stats, which either accesses the specified field in
the struct disk_stats directly (non SMP) or sums
up the per CPU values in a variable of the same
type as the field, so in any case the result will
have the same type and range as the specified field
which for all disk_stats entries is unsigned long
also, for unsigned long ranges the output of %lu
should be identical to the one of %llu, so no change
in the actual proc entry contents
best,
Herbert
Signed-off-by: Herbert Poetzl <herbert@13thfloor.at>
--- linux/block/genhd.c 2011-06-09 15:16:17.000000000 +0200
+++ linux/block/genhd.c 2011-06-13 13:05:56.000000000 +0200
@@ -1154,17 +1154,17 @@ static int diskstats_show(struct seq_fil
cpu = part_stat_lock();
part_round_stats(cpu, hd);
part_stat_unlock();
- seq_printf(seqf, "%4d %7d %s %lu %lu %llu "
- "%u %lu %lu %llu %u %u %u %u\n",
+ seq_printf(seqf, "%4d %7d %s %lu %lu %lu "
+ "%u %lu %lu %lu %u %u %u %u\n",
MAJOR(part_devt(hd)), MINOR(part_devt(hd)),
disk_name(gp, hd->partno, buf),
part_stat_read(hd, ios[READ]),
part_stat_read(hd, merges[READ]),
- (unsigned long long)part_stat_read(hd, sectors[READ]),
+ part_stat_read(hd, sectors[READ]),
jiffies_to_msecs(part_stat_read(hd, ticks[READ])),
part_stat_read(hd, ios[WRITE]),
part_stat_read(hd, merges[WRITE]),
- (unsigned long long)part_stat_read(hd, sectors[WRITE]),
+ part_stat_read(hd, sectors[WRITE]),
jiffies_to_msecs(part_stat_read(hd, ticks[WRITE])),
part_in_flight(hd),
jiffies_to_msecs(part_stat_read(hd, io_ticks)),
^ permalink raw reply [flat|nested] 2+ messages in thread
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2011-04-14 1:10 [PATCH] genhd: remove useless cast in diskstats_show() Herbert Poetzl
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