diff options
| author | Abylay Ospan <aospan@netup.ru> | 2009-11-01 18:46:53 -0300 |
|---|---|---|
| committer | Mauro Carvalho Chehab <mchehab@redhat.com> | 2009-12-05 18:41:11 -0200 |
| commit | 26b9d6c0b0e91c84b4713da5abd16baef3963d33 (patch) | |
| tree | c1db43adcc9a0d938143df9374af77807ffd4698 /drivers/media/dvb/dvb-core/dvb_demux.c | |
| parent | 117e1348f8b0cd91834873bb21faff827798bd8b (diff) | |
V4L/DVB (13271): TS speed check. Logging transport stream speed in Kbits per second
[mchehab@redhat.com: add asm/div64.h and allocate vars only if dvb_demux_speedcheck specified]
Signed-off-by: Abylay Ospan <aospan@netup.ru>
Signed-off-by: Mauro Carvalho Chehab <mchehab@redhat.com>
Diffstat (limited to 'drivers/media/dvb/dvb-core/dvb_demux.c')
| -rw-r--r-- | drivers/media/dvb/dvb-core/dvb_demux.c | 39 |
1 files changed, 39 insertions, 0 deletions
diff --git a/drivers/media/dvb/dvb-core/dvb_demux.c b/drivers/media/dvb/dvb-core/dvb_demux.c index 91c537bca8ad..b78cfb7d1897 100644 --- a/drivers/media/dvb/dvb-core/dvb_demux.c +++ b/drivers/media/dvb/dvb-core/dvb_demux.c @@ -30,6 +30,7 @@ #include <linux/string.h> #include <linux/crc32.h> #include <asm/uaccess.h> +#include <asm/div64.h> #include "dvb_demux.h" @@ -44,6 +45,11 @@ module_param(dvb_demux_tscheck, int, 0644); MODULE_PARM_DESC(dvb_demux_tscheck, "enable transport stream continuity and TEI check"); +static int dvb_demux_speedcheck; +module_param(dvb_demux_speedcheck, int, 0644); +MODULE_PARM_DESC(dvb_demux_speedcheck, + "enable transport stream speed check"); + #define dprintk_tscheck(x...) do { \ if (dvb_demux_tscheck && printk_ratelimit()) \ printk(x); \ @@ -387,6 +393,39 @@ static void dvb_dmx_swfilter_packet(struct dvb_demux *demux, const u8 *buf) u16 pid = ts_pid(buf); int dvr_done = 0; + if (dvb_demux_speedcheck) { + struct timespec cur_time, delta_time; + u64 speed_bytes, speed_timedelta; + + demux->speed_pkts_cnt++; + + /* show speed every SPEED_PKTS_INTERVAL packets */ + if (!(demux->speed_pkts_cnt % SPEED_PKTS_INTERVAL)) { + cur_time = current_kernel_time(); + + if (demux->speed_last_time.tv_sec != 0 && + demux->speed_last_time.tv_nsec != 0) { + delta_time = timespec_sub(cur_time, + demux->speed_last_time); + speed_bytes = (u64)demux->speed_pkts_cnt + * 188 * 8; + /* convert to 1024 basis */ + speed_bytes = 1000 * div64_u64(speed_bytes, + 1024); + speed_timedelta = + (u64)timespec_to_ns(&delta_time); + speed_timedelta = div64_u64(speed_timedelta, + 1000000); /* nsec -> usec */ + printk(KERN_INFO "TS speed %llu Kbits/sec \n", + div64_u64(speed_bytes, + speed_timedelta)); + }; + + demux->speed_last_time = cur_time; + demux->speed_pkts_cnt = 0; + }; + }; + if (dvb_demux_tscheck) { if (!demux->cnt_storage) demux->cnt_storage = vmalloc(MAX_PID + 1); |