diff options
| author | Jack Steiner <steiner@sgi.com> | 2009-04-02 16:59:06 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2009-04-02 19:05:06 -0700 |
| commit | e56484da3aa550dace96cbf1202446231471d7e1 (patch) | |
| tree | 547f067876c0610c989a268ce0b19ef6986ee302 /drivers/misc/sgi-gru/gruhandles.c | |
| parent | a24e5e1caf4875bbe09f328b5f4daef6d25ebcc4 (diff) | |
sgi-gru: add statistics to the GRU context management functions
Add statistics to the GRU context management functions.
Signed-off-by: Jack Steiner <steiner@sgi.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/misc/sgi-gru/gruhandles.c')
| -rw-r--r-- | drivers/misc/sgi-gru/gruhandles.c | 12 |
1 files changed, 12 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; } |