diff options
Diffstat (limited to 'drivers/misc')
| -rw-r--r-- | drivers/misc/sgi-gru/gruhandles.c | 12 | ||||
| -rw-r--r-- | drivers/misc/sgi-gru/gruprocfs.c | 39 | ||||
| -rw-r--r-- | drivers/misc/sgi-gru/grutables.h | 8 |
3 files changed, 59 insertions, 0 deletions
diff --git a/drivers/misc/sgi-gru/gruhandles.c b/drivers/misc/sgi-gru/gruhandles.c index 5b82e7def16..9dcf5d89668 100644 --- a/drivers/misc/sgi-gru/gruhandles.c +++ b/drivers/misc/sgi-gru/gruhandles.c @@ -35,6 +35,16 @@ /* Extract the status field from a kernel handle */ #define GET_MSEG_HANDLE_STATUS(h) (((*(unsigned long *)(h)) >> 16) & 3) +struct mcs_op_statistic mcs_op_statistics[mcsop_last]; + +static void update_mcs_stats(enum mcs_op op, unsigned long clks) +{ + atomic_long_inc(&mcs_op_statistics[op].count); + atomic_long_add(clks, &mcs_op_statistics[op].total); + if (mcs_op_statistics[op].max < clks) + mcs_op_statistics[op].max = clks; +} + static void start_instruction(void *h) { unsigned long *w0 = h; @@ -57,6 +67,8 @@ static int wait_instruction_complete(void *h, enum mcs_op opc) if (GRU_OPERATION_TIMEOUT < (get_cycles() - start_time)) panic("GRU %p is malfunctioning\n", h); } + if (gru_options & OPT_STATS) + update_mcs_stats(opc, get_cycles() - start_time); return status; } diff --git a/drivers/misc/sgi-gru/gruprocfs.c b/drivers/misc/sgi-gru/gruprocfs.c index 6d63a8d70f8..8724551aa55 100644 --- a/drivers/misc/sgi-gru/gruprocfs.c +++ b/drivers/misc/sgi-gru/gruprocfs.c @@ -122,6 +122,30 @@ static ssize_t statistics_write(struct file *file, const char __user *userbuf, return count; } +static int mcs_statistics_show(struct seq_file *s, void *p) +{ + int op; + unsigned long total, count, max; + static char *id[] = {"cch_allocate", "cch_start", "cch_interrupt", + "cch_interrupt_sync", "cch_deallocate", "tgh_invalidate"}; + + for (op = 0; op < mcsop_last; op++) { + count = atomic_long_read(&mcs_op_statistics[op].count); + total = atomic_long_read(&mcs_op_statistics[op].total); + max = mcs_op_statistics[op].max; + seq_printf(s, "%-20s%12ld%12ld%12ld\n", id[op], count, + count ? total / count : 0, max); + } + return 0; +} + +static ssize_t mcs_statistics_write(struct file *file, + const char __user *userbuf, size_t count, loff_t *data) +{ + memset(mcs_op_statistics, 0, sizeof(mcs_op_statistics)); + return count; +} + static int options_show(struct seq_file *s, void *p) { seq_printf(s, "0x%lx\n", gru_options); @@ -137,6 +161,7 @@ static ssize_t options_write(struct file *file, const char __user *userbuf, if (copy_from_user (buf, userbuf, count < sizeof(buf) ? count : sizeof(buf))) return -EFAULT; + buf[count - 1] = '\0'; if (!strict_strtoul(buf, 10, &val)) gru_options = val; @@ -233,6 +258,11 @@ static int statistics_open(struct inode *inode, struct file *file) return single_open(file, statistics_show, NULL); } +static int mcs_statistics_open(struct inode *inode, struct file *file) +{ + return single_open(file, mcs_statistics_show, NULL); +} + static int options_open(struct inode *inode, struct file *file) { return single_open(file, options_show, NULL); @@ -257,6 +287,14 @@ static const struct file_operations statistics_fops = { .release = single_release, }; +static const struct file_operations mcs_statistics_fops = { + .open = mcs_statistics_open, + .read = seq_read, + .write = mcs_statistics_write, + .llseek = seq_lseek, + .release = single_release, +}; + static const struct file_operations options_fops = { .open = options_open, .read = seq_read, @@ -285,6 +323,7 @@ static struct proc_entry { struct proc_dir_entry *entry; } proc_files[] = { {"statistics", 0644, &statistics_fops}, + {"mcs_statistics", 0644, &mcs_statistics_fops}, {"debug_options", 0644, &options_fops}, {"cch_status", 0444, &cch_fops}, {"gru_status", 0444, &gru_fops}, diff --git a/drivers/misc/sgi-gru/grutables.h b/drivers/misc/sgi-gru/grutables.h index 378a0894198..685db88cc47 100644 --- a/drivers/misc/sgi-gru/grutables.h +++ b/drivers/misc/sgi-gru/grutables.h @@ -242,6 +242,14 @@ struct gru_stats_s { enum mcs_op {cchop_allocate, cchop_start, cchop_interrupt, cchop_interrupt_sync, cchop_deallocate, tghop_invalidate, mcsop_last}; +struct mcs_op_statistic { + atomic_long_t count; + atomic_long_t total; + unsigned long max; +}; + +extern struct mcs_op_statistic mcs_op_statistics[mcsop_last]; + #define OPT_DPRINT 1 #define OPT_STATS 2 #define GRU_QUICKLOOK 4 |