xiaomi-sm8450/android_kernel_xiaomi_sm8450
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

ocxl: Add trace points

Browse Source 
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>
This commit is contained in:
Frederic Barrat
2018-01-23 12:31:44 +01:00
committed by Michael Ellerman
parent 280b983ce2
commit 92add22e84
5 changed files with 205 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
drivers/misc/ocxl/link.c
View File

@@ -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