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Steven Rostedt <rostedt at goodmis.org> writes: > On Thu, 26 Jan 2023 18:01:14 +0100 > Petr Machata <petrm at nvidia.com> wrote: > >> + TP_printk("dev %s af %u src %pI4/%pI6c grp %pI4/%pI6c/%pM vid %u", >> + __get_str(dev), __entry->af, __entry->src4, __entry->src6, >> + __entry->grp4, __entry->grp6, __entry->grpmac, __entry->vid) > > And just have: > > TP_printk("dev %s af %u src %pI6c grp %pI6c/%pM vid %u", > __get_str(dev), __entry->af, __entry->src, __entr...

Recent debugging on vhost net zerocopy shows the need of tracepoints. So to help in vhost{net} debugging and performance analyzing, the following series adding basic tracepoints to vhost. Operations of both vhost and vhost_net were traced in current implementation. A top-like satistics displaying script were introduced to help the troubleshooting: vhost statistics vhost_virtio_update_used_idx

Recent debugging on vhost net zerocopy shows the need of tracepoints. So to help in vhost{net} debugging and performance analyzing, the following series adding basic tracepoints to vhost. Operations of both vhost and vhost_net were traced in current implementation. A top-like satistics displaying script were introduced to help the troubleshooting: vhost statistics vhost_virtio_update_used_idx

...OTLBXEN_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_SWIOTLBXEN_H + +#include <linux/tracepoint.h> + +TRACE_EVENT(bounced, + + TP_PROTO(struct device *dev, + dma_addr_t dev_addr, + size_t size, + int swiotlb_force), + + TP_ARGS(dev, dev_addr, size, swiotlb_force), + + TP_STRUCT__entry( + __string( dev_name, dev_name(dev) ) + __field( u64, dma_mask ) + __field( dma_addr_t, dev_addr ) + __field( size_t, size ) + __field( int, swiotlb_force ) + ), + + TP_fast_assign( + __assign_str(dev_name, dev_name(dev)); + __entry->dma_mask = (dev->dma_mask ? *dev->dma_mask :...

...OTLBXEN_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_SWIOTLBXEN_H + +#include <linux/tracepoint.h> + +TRACE_EVENT(bounced, + + TP_PROTO(struct device *dev, + dma_addr_t dev_addr, + size_t size, + int swiotlb_force), + + TP_ARGS(dev, dev_addr, size, swiotlb_force), + + TP_STRUCT__entry( + __string( dev_name, dev_name(dev) ) + __field( u64, dma_mask ) + __field( dma_addr_t, dev_addr ) + __field( size_t, size ) + __field( int, swiotlb_force ) + ), + + TP_fast_assign( + __assign_str(dev_name, dev_name(dev)); + __entry->dma_mask = (dev->dma_mask ? *dev->dma_mask :...

...OTLBXEN_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_SWIOTLBXEN_H + +#include <linux/tracepoint.h> + +TRACE_EVENT(bounced, + + TP_PROTO(struct device *dev, + dma_addr_t dev_addr, + size_t size, + int swiotlb_force), + + TP_ARGS(dev, dev_addr, size, swiotlb_force), + + TP_STRUCT__entry( + __string( dev_name, dev_name(dev) ) + __field( u64, dma_mask ) + __field( dma_addr_t, dev_addr ) + __field( size_t, size ) + __field( int, swiotlb_force ) + ), + + TP_fast_assign( + __assign_str(dev_name, dev_name(dev)); + __entry->dma_mask = (dev->dma_mask ? *dev->dma_mask :...

...LB_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_SWIOTLB_H + +#include <linux/tracepoint.h> + +TRACE_EVENT(swiotlb_bounced, + + TP_PROTO(struct device *dev, + dma_addr_t dev_addr, + size_t size, + int swiotlb_force), + + TP_ARGS(dev, dev_addr, size, swiotlb_force), + + TP_STRUCT__entry( + __string( dev_name, dev_name(dev) ) + __field( u64, dma_mask ) + __field( dma_addr_t, dev_addr ) + __field( size_t, size ) + __field( int, swiotlb_force ) + ), + + TP_fast_assign( + __assign_str(dev_name, dev_name(dev)); + __entry->dma_mask = (dev->dma_mask ? *dev->dma_mask :...

...LB_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_SWIOTLB_H + +#include <linux/tracepoint.h> + +TRACE_EVENT(swiotlb_bounced, + + TP_PROTO(struct device *dev, + dma_addr_t dev_addr, + size_t size, + int swiotlb_force), + + TP_ARGS(dev, dev_addr, size, swiotlb_force), + + TP_STRUCT__entry( + __string( dev_name, dev_name(dev) ) + __field( u64, dma_mask ) + __field( dma_addr_t, dev_addr ) + __field( size_t, size ) + __field( int, swiotlb_force ) + ), + + TP_fast_assign( + __assign_str(dev_name, dev_name(dev)); + __entry->dma_mask = (dev->dma_mask ? *dev->dma_mask :...

...LB_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_SWIOTLB_H + +#include <linux/tracepoint.h> + +TRACE_EVENT(swiotlb_bounced, + + TP_PROTO(struct device *dev, + dma_addr_t dev_addr, + size_t size, + int swiotlb_force), + + TP_ARGS(dev, dev_addr, size, swiotlb_force), + + TP_STRUCT__entry( + __string( dev_name, dev_name(dev) ) + __field( u64, dma_mask ) + __field( dma_addr_t, dev_addr ) + __field( size_t, size ) + __field( int, swiotlb_force ) + ), + + TP_fast_assign( + __assign_str(dev_name, dev_name(dev)); + __entry->dma_mask = (dev->dma_mask ? *dev->dma_mask :...

To help in vhost analyzing, the following series adding basic tracepoints to vhost. Operations of both virtqueues and vhost works were traced in current implementation, net code were untouched. A top-like satistics displaying script were introduced to help the troubleshooting. TODO: - net specific tracepoints? --- Jason Wang (2): vhost: basic tracepoints tools: virtio: add a

To help in vhost analyzing, the following series adding basic tracepoints to vhost. Operations of both virtqueues and vhost works were traced in current implementation, net code were untouched. A top-like satistics displaying script were introduced to help the troubleshooting. TODO: - net specific tracepoints? --- Jason Wang (2): vhost: basic tracepoints tools: virtio: add a

...M_IOBAND_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_DM_IOBAND_H + +#include <linux/tracepoint.h> + +#undef TRACE_SYSTEM +#define TRACE_SYSTEM dm-ioband + +TRACE_EVENT(ioband_hold_urgent_bio, + + TP_PROTO(struct ioband_group *gp, struct bio *bio), + + TP_ARGS(gp, bio), + + TP_STRUCT__entry( + __string( g_name, gp->c_banddev->g_name ) + __field( int, c_id ) + __field( int, g_blocked ) + __field( int, c_blocked ) + __field( dev_t, dev ) + __field( sector_t, sector ) + __field( unsigned int, nr_sector ) + __field( char, rw ) + ), + + TP_fast_assign( + __a...

...M_IOBAND_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_DM_IOBAND_H + +#include <linux/tracepoint.h> + +#undef TRACE_SYSTEM +#define TRACE_SYSTEM dm-ioband + +TRACE_EVENT(ioband_hold_urgent_bio, + + TP_PROTO(struct ioband_group *gp, struct bio *bio), + + TP_ARGS(gp, bio), + + TP_STRUCT__entry( + __string( g_name, gp->c_banddev->g_name ) + __field( int, c_id ) + __field( int, g_blocked ) + __field( int, c_blocked ) + __field( dev_t, dev ) + __field( sector_t, sector ) + __field( unsigned int, nr_sector ) + __field( char, rw ) + ), + + TP_fast_assign( + __a...

...M_IOBAND_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_DM_IOBAND_H + +#include <linux/tracepoint.h> + +#undef TRACE_SYSTEM +#define TRACE_SYSTEM dm-ioband + +TRACE_EVENT(ioband_hold_urgent_bio, + + TP_PROTO(struct ioband_group *gp, struct bio *bio), + + TP_ARGS(gp, bio), + + TP_STRUCT__entry( + __string( g_name, gp->c_banddev->g_name ) + __field( int, c_id ) + __field( int, g_blocked ) + __field( int, c_blocked ) + __field( dev_t, dev ) + __field( sector_t, sector ) + __field( unsigned int, nr_sector ) + __field( char, rw ) + ), + + TP_fast_assign( + __a...

Hi all, These are new releases of dm-ioband and blkio-cgroup. The major changes of these releases are: - dm-ioband can be configured through the cgroup interface. The bandwidth can be assigned on a per cgroup per block device basis. - The event tracing is supported that helps in debugging and monitoring dm-ioband. - A document for blkio-cgroup is available at

Hi all, These are new releases of dm-ioband and blkio-cgroup. The major changes of these releases are: - dm-ioband can be configured through the cgroup interface. The bandwidth can be assigned on a per cgroup per block device basis. - The event tracing is supported that helps in debugging and monitoring dm-ioband. - A document for blkio-cgroup is available at

Hi all, These are new releases of dm-ioband and blkio-cgroup. The major changes of these releases are: - dm-ioband can be configured through the cgroup interface. The bandwidth can be assigned on a per cgroup per block device basis. - The event tracing is supported that helps in debugging and monitoring dm-ioband. - A document for blkio-cgroup is available at

...e/events/xen.h @@ -153,26 +153,6 @@ DECLARE_EVENT_CLASS(xen_mmu__set_pte, DEFINE_XEN_MMU_SET_PTE(xen_mmu_set_pte); -TRACE_EVENT(xen_mmu_set_pte_at, - TP_PROTO(struct mm_struct *mm, unsigned long addr, - pte_t *ptep, pte_t pteval), - TP_ARGS(mm, addr, ptep, pteval), - TP_STRUCT__entry( - __field(struct mm_struct *, mm) - __field(unsigned long, addr) - __field(pte_t *, ptep) - __field(pteval_t, pteval) - ), - TP_fast_assign(__entry->mm = mm; - __entry->addr = addr; - __entry->ptep = ptep; - __entry->pteval = pteval.pte), -...

...M_IOBAND_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_DM_IOBAND_H + +#include <linux/tracepoint.h> + +#undef TRACE_SYSTEM +#define TRACE_SYSTEM dm-ioband + +TRACE_EVENT(ioband_hold_urgent_bio, + + TP_PROTO(struct ioband_group *gp, struct bio *bio), + + TP_ARGS(gp, bio), + + TP_STRUCT__entry( + __string( g_name, gp->c_banddev->g_name ) + __field( int, c_id ) + __field( int, g_blocked ) + __field( int, c_blocked ) + __field( dev_t, dev ) + __field( sector_t, sector ) + __field( unsigned int, nr_sector ) + __field( char, rw ) + ), + + TP_fast_assign( + __a...

...M_IOBAND_H) || defined(TRACE_HEADER_MULTI_READ) +#define _TRACE_DM_IOBAND_H + +#include <linux/tracepoint.h> + +#undef TRACE_SYSTEM +#define TRACE_SYSTEM dm-ioband + +TRACE_EVENT(ioband_hold_urgent_bio, + + TP_PROTO(struct ioband_group *gp, struct bio *bio), + + TP_ARGS(gp, bio), + + TP_STRUCT__entry( + __string( g_name, gp->c_banddev->g_name ) + __field( int, c_id ) + __field( int, g_blocked ) + __field( int, c_blocked ) + __field( dev_t, dev ) + __field( sector_t, sector ) + __field( unsigned int, nr_sector ) + __field( char, rw ) + ), + + TP_fast_assign( + __a...