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| author | Frederic Barrat <fbarrat@linux.vnet.ibm.com> | 2018-01-23 12:31:44 +0100 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2018-01-24 01:42:59 +0100 |
| commit | 92add22e84788d44e978662ca6bcd585f9ac081e (patch) | |
| tree | c9dd4a0501f9c0ca3342e28349fae69af642b78c /drivers/misc/ocxl/link.c | |
| parent | ocxl: Add a kernel API for other opencapi drivers (diff) | |
| download | linux-92add22e84788d44e978662ca6bcd585f9ac081e.tar.xz linux-92add22e84788d44e978662ca6bcd585f9ac081e.zip | |
ocxl: Add trace points
Define a few trace points so that we can use the standard tracing
mechanism for debug and/or monitoring.
Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'drivers/misc/ocxl/link.c')
| -rw-r--r-- | drivers/misc/ocxl/link.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/drivers/misc/ocxl/link.c b/drivers/misc/ocxl/link.c index fbca3feec592..f30790582dc0 100644 --- a/drivers/misc/ocxl/link.c +++ b/drivers/misc/ocxl/link.c @@ -7,6 +7,7 @@ #include <asm/pnv-ocxl.h> #include <misc/ocxl.h> #include "ocxl_internal.h" +#include "trace.h" #define SPA_PASID_BITS 15 @@ -116,8 +117,11 @@ static void ack_irq(struct spa *spa, enum xsl_response r) else WARN(1, "Invalid irq response %d\n", r); - if (reg) + if (reg) { + trace_ocxl_fault_ack(spa->spa_mem, spa->xsl_fault.pe, + spa->xsl_fault.dsisr, spa->xsl_fault.dar, reg); out_be64(spa->reg_tfc, reg); + } } static void xsl_fault_handler_bh(struct work_struct *fault_work) @@ -182,6 +186,7 @@ static irqreturn_t xsl_fault_handler(int irq, void *data) int lpid, pid, tid; read_irq(spa, &dsisr, &dar, &pe_handle); + trace_ocxl_fault(spa->spa_mem, pe_handle, dsisr, dar, -1); WARN_ON(pe_handle > SPA_PE_MASK); pe = spa->spa_mem + pe_handle; @@ -532,6 +537,7 @@ int ocxl_link_add_pe(void *link_handle, int pasid, u32 pidr, u32 tidr, * the problem. */ mmgrab(mm); + trace_ocxl_context_add(current->pid, spa->spa_mem, pasid, pidr, tidr); unlock: mutex_unlock(&spa->spa_lock); return rc; @@ -577,6 +583,9 @@ int ocxl_link_remove_pe(void *link_handle, int pasid) goto unlock; } + trace_ocxl_context_remove(current->pid, spa->spa_mem, pasid, + be32_to_cpu(pe->pid), be32_to_cpu(pe->tid)); + memset(pe, 0, sizeof(struct ocxl_process_element)); /* * The barrier makes sure the PE is removed from the SPA |