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author | Jan Glauber <jang@linux.vnet.ibm.com> | 2010-01-04 09:05:42 +0100 |
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committer | Martin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com> | 2010-01-04 09:05:58 +0100 |
commit | 6486cda6c6b15368e2c925d89b4e9ed13e67b91b (patch) | |
tree | c4ca8e2b2b961adbc19733d1bcf3ebc6c5c6be32 /drivers/s390/cio/qdio_perf.h | |
parent | 45d28b097280a78893ce25a5d0db41e6a2717853 (diff) | |
download | kernel_samsung_smdk4412-6486cda6c6b15368e2c925d89b4e9ed13e67b91b.zip kernel_samsung_smdk4412-6486cda6c6b15368e2c925d89b4e9ed13e67b91b.tar.gz kernel_samsung_smdk4412-6486cda6c6b15368e2c925d89b4e9ed13e67b91b.tar.bz2 |
[S390] qdio: convert global statistics to per-device stats
Revamp the qdio performance statistics and move them from procfs to
debugfs using the seq_file interface. Since the statistics are not
intended for the general user the removal of /proc/qdio_perf should
not surprise anyone.
The per device statistics are disabled by default, writing 1 to
/<debugfs mountpoint>/qdio/<device bus ID>/statistics enables the
statistics for the given device.
Signed-off-by: Jan Glauber <jang@linux.vnet.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'drivers/s390/cio/qdio_perf.h')
-rw-r--r-- | drivers/s390/cio/qdio_perf.h | 62 |
1 files changed, 0 insertions, 62 deletions
diff --git a/drivers/s390/cio/qdio_perf.h b/drivers/s390/cio/qdio_perf.h deleted file mode 100644 index 1245423..0000000 --- a/drivers/s390/cio/qdio_perf.h +++ /dev/null @@ -1,62 +0,0 @@ -/* - * drivers/s390/cio/qdio_perf.h - * - * Copyright IBM Corp. 2008 - * - * Author: Jan Glauber (jang@linux.vnet.ibm.com) - */ -#ifndef QDIO_PERF_H -#define QDIO_PERF_H - -#include <linux/types.h> -#include <asm/atomic.h> - -struct qdio_perf_stats { - /* interrupt handler calls */ - atomic_long_t qdio_int; - atomic_long_t pci_int; - atomic_long_t thin_int; - - /* tasklet runs */ - atomic_long_t tasklet_inbound; - atomic_long_t tasklet_outbound; - atomic_long_t tasklet_thinint; - atomic_long_t tasklet_thinint_loop; - atomic_long_t thinint_inbound; - atomic_long_t thinint_inbound_loop; - atomic_long_t thinint_inbound_loop2; - - /* signal adapter calls */ - atomic_long_t siga_out; - atomic_long_t siga_in; - atomic_long_t siga_sync; - - /* misc */ - atomic_long_t inbound_handler; - atomic_long_t outbound_handler; - atomic_long_t fast_requeue; - atomic_long_t outbound_target_full; - atomic_long_t inbound_queue_full; - - /* for debugging */ - atomic_long_t debug_tl_out_timer; - atomic_long_t debug_stop_polling; - atomic_long_t debug_eqbs_all; - atomic_long_t debug_eqbs_incomplete; - atomic_long_t debug_sqbs_all; - atomic_long_t debug_sqbs_incomplete; -}; - -extern struct qdio_perf_stats perf_stats; -extern int qdio_performance_stats; - -static inline void qdio_perf_stat_inc(atomic_long_t *count) -{ - if (qdio_performance_stats) - atomic_long_inc(count); -} - -int qdio_setup_perf_stats(void); -void qdio_remove_perf_stats(void); - -#endif |