> -----Original Message----- > From: Harman Kalra <hka...@marvell.com> > Sent: Sunday, July 28, 2019 2:11 AM > To: Jerin Jacob Kollanukkaran <jer...@marvell.com>; Nithin Kumar Dabilpuram > <ndabilpu...@marvell.com>; Vamsi Krishna Attunuru > <vattun...@marvell.com>; Kiran Kumar Kokkilagadda > <kirankum...@marvell.com> > Cc: dev@dpdk.org; Harman Kalra <hka...@marvell.com> > Subject: [PATCH v2 2/2] net/octeontx2: support read clock API > > This patch implements read clock api whose purpose is to return raw clock > ticks. > Using this API real time ticks spent in processing a packet can be known: > <read_clock val at any time> - mbuf->timestamp > > Calling mbox for reading raw clock ticks in fastpath is very expensive so its > value > is derived from time stamp counter(tsc) using freq multipler (ratio of raw > clock > ticks and tsc) and clock delta (by how much tsc is lagging from raw clock > value). > > Signed-off-by: Harman Kalra <hka...@marvell.com> > --- > V2: > * More detailed commit message > * changed rdtsc to tsc (timestamp counter) > * Initialized a variable to zero only when needed > * changed done label to fail > > drivers/common/octeontx2/otx2_mbox.h | 2 + > drivers/net/octeontx2/otx2_ethdev.c | 89 ++++++++++++++++++++++++++++
Move as much changes to otx2_ptp.c, rest it looks good to me.
