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cxl: Add tracepoints around the cxl hcall 

To ease debugging, add a few tracepoints around the cxl hcalls.

Co-authored-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Signed-off-by: Frederic Barrat <fbarrat@linux.vnet.ibm.com>
Signed-off-by: Christophe Lombard <clombard@linux.vnet.ibm.com>
Reviewed-by: Manoj Kumar <manoj@linux.vnet.ibm.com>
Acked-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
This commit is contained in:
Christophe Lombard 2016-03-04 12:26:42 +01:00 committed by Michael Ellerman
parent 0d400f77c1
commit e7a801ad15
2 changed files with 202 additions and 0 deletions
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9
drivers/misc/cxl/hcalls.c
View File

@ -13,6 +13,7 @@
#include <linux/delay.h>
#include <asm/byteorder.h>
#include "hcalls.h"
#include "trace.h"
#define CXL_HCALL_TIMEOUT 60000
#define CXL_HCALL_TIMEOUT_DOWNLOAD 120000
@ -141,6 +142,7 @@ long cxl_h_attach_process(u64 unit_address,
CXL_H_WAIT_UNTIL_DONE(rc, retbuf, H_ATTACH_CA_PROCESS, unit_address, virt_to_phys(element));
_PRINT_MSG(rc, "cxl_h_attach_process(%#.16llx, %#.16lx): %li\n",
unit_address, virt_to_phys(element), rc);
trace_cxl_hcall_attach(unit_address, virt_to_phys(element), retbuf[0], retbuf[1], retbuf[2], rc);
pr_devel("token: 0x%.8lx mmio_addr: 0x%lx mmio_size: 0x%lx\nProcess Element Structure:\n",
retbuf[0], retbuf[1], retbuf[2]);
@ -180,6 +182,7 @@ long cxl_h_detach_process(u64 unit_address, u64 process_token)
CXL_H_WAIT_UNTIL_DONE(rc, retbuf, H_DETACH_CA_PROCESS, unit_address, process_token);
_PRINT_MSG(rc, "cxl_h_detach_process(%#.16llx, 0x%.8llx): %li\n", unit_address, process_token, rc);
trace_cxl_hcall_detach(unit_address, process_token, rc);
switch (rc) {
case H_SUCCESS: /* The process was detached from the coherent platform function */
@ -212,6 +215,7 @@ static long cxl_h_control_function(u64 unit_address, u64 op,
CXL_H9_WAIT_UNTIL_DONE(rc, retbuf, H_CONTROL_CA_FUNCTION, unit_address, op, p1, p2, p3, p4);
_PRINT_MSG(rc, "cxl_h_control_function(%#.16llx, %s(%#llx, %#llx, %#llx, %#llx, R4: %#lx)): %li\n",
unit_address, OP_STR_AFU(op), p1, p2, p3, p4, retbuf[0], rc);
trace_cxl_hcall_control_function(unit_address, OP_STR_AFU(op), p1, p2, p3, p4, retbuf[0], rc);
switch (rc) {
case H_SUCCESS: /* The operation is completed for the coherent platform function */
@ -405,6 +409,7 @@ long cxl_h_collect_int_info(u64 unit_address, u64 process_token,
unit_address, process_token);
_PRINT_MSG(rc, "cxl_h_collect_int_info(%#.16llx, 0x%llx): %li\n",
unit_address, process_token, rc);
trace_cxl_hcall_collect_int_info(unit_address, process_token, rc);
switch (rc) {
case H_SUCCESS: /* The interrupt info is returned in return registers. */
@ -448,6 +453,8 @@ long cxl_h_control_faults(u64 unit_address, u64 process_token,
_PRINT_MSG(rc, "cxl_h_control_faults(%#.16llx, 0x%llx, %#llx, %#llx): %li (%#lx)\n",
unit_address, process_token, control_mask, reset_mask,
rc, retbuf[0]);
trace_cxl_hcall_control_faults(unit_address, process_token,
control_mask, reset_mask, retbuf[0], rc);
switch (rc) {
case H_SUCCESS: /* Faults were successfully controlled for the function. */
@ -481,6 +488,7 @@ static long cxl_h_control_facility(u64 unit_address, u64 op,
CXL_H9_WAIT_UNTIL_DONE(rc, retbuf, H_CONTROL_CA_FACILITY, unit_address, op, p1, p2, p3, p4);
_PRINT_MSG(rc, "cxl_h_control_facility(%#.16llx, %s(%#llx, %#llx, %#llx, %#llx, R4: %#lx)): %li\n",
unit_address, OP_STR_CONTROL_ADAPTER(op), p1, p2, p3, p4, retbuf[0], rc);
trace_cxl_hcall_control_facility(unit_address, OP_STR_CONTROL_ADAPTER(op), p1, p2, p3, p4, retbuf[0], rc);
switch (rc) {
case H_SUCCESS: /* The operation is completed for the coherent platform facility */
@ -587,6 +595,7 @@ static long cxl_h_download_facility(u64 unit_address, u64 op,
}
_PRINT_MSG(rc, "cxl_h_download_facility(%#.16llx, %s(%#llx, %#llx), %#lx): %li\n",
unit_address, OP_STR_DOWNLOAD_ADAPTER(op), list_address, num, retbuf[0], rc);
trace_cxl_hcall_download_facility(unit_address, OP_STR_DOWNLOAD_ADAPTER(op), list_address, num, retbuf[0], rc);
switch (rc) {
case H_SUCCESS: /* The operation is completed for the coherent platform facility */

193
drivers/misc/cxl/trace.h
View File

@ -450,6 +450,199 @@ DEFINE_EVENT(cxl_pe_class, cxl_slbia,
TP_ARGS(ctx)
);
TRACE_EVENT(cxl_hcall,
TP_PROTO(u64 unit_address, u64 process_token, long rc),
TP_ARGS(unit_address, process_token, rc),
TP_STRUCT__entry(
__field(u64, unit_address)
__field(u64, process_token)
__field(long, rc)
),
TP_fast_assign(
__entry->unit_address = unit_address;
__entry->process_token = process_token;
__entry->rc = rc;
),
TP_printk("unit_address=0x%016llx process_token=0x%016llx rc=%li",
__entry->unit_address,
__entry->process_token,
__entry->rc
)
);
TRACE_EVENT(cxl_hcall_control,
TP_PROTO(u64 unit_address, char *fct, u64 p1, u64 p2, u64 p3,
u64 p4, unsigned long r4, long rc),
TP_ARGS(unit_address, fct, p1, p2, p3, p4, r4, rc),
TP_STRUCT__entry(
__field(u64, unit_address)
__field(char *, fct)
__field(u64, p1)
__field(u64, p2)
__field(u64, p3)
__field(u64, p4)
__field(unsigned long, r4)
__field(long, rc)
),
TP_fast_assign(
__entry->unit_address = unit_address;
__entry->fct = fct;
__entry->p1 = p1;
__entry->p2 = p2;
__entry->p3 = p3;
__entry->p4 = p4;
__entry->r4 = r4;
__entry->rc = rc;
),
TP_printk("unit_address=%#.16llx %s(%#llx, %#llx, %#llx, %#llx, R4: %#lx)): %li",
__entry->unit_address,
__entry->fct,
__entry->p1,
__entry->p2,
__entry->p3,
__entry->p4,
__entry->r4,
__entry->rc
)
);
TRACE_EVENT(cxl_hcall_attach,
TP_PROTO(u64 unit_address, u64 phys_addr, unsigned long process_token,
unsigned long mmio_addr, unsigned long mmio_size, long rc),
TP_ARGS(unit_address, phys_addr, process_token,
mmio_addr, mmio_size, rc),
TP_STRUCT__entry(
__field(u64, unit_address)
__field(u64, phys_addr)
__field(unsigned long, process_token)
__field(unsigned long, mmio_addr)
__field(unsigned long, mmio_size)
__field(long, rc)
),
TP_fast_assign(
__entry->unit_address = unit_address;
__entry->phys_addr = phys_addr;
__entry->process_token = process_token;
__entry->mmio_addr = mmio_addr;
__entry->mmio_size = mmio_size;
__entry->rc = rc;
),
TP_printk("unit_address=0x%016llx phys_addr=0x%016llx "
"token=0x%.8lx mmio_addr=0x%lx mmio_size=0x%lx rc=%li",
__entry->unit_address,
__entry->phys_addr,
__entry->process_token,
__entry->mmio_addr,
__entry->mmio_size,
__entry->rc
)
);
DEFINE_EVENT(cxl_hcall, cxl_hcall_detach,
TP_PROTO(u64 unit_address, u64 process_token, long rc),
TP_ARGS(unit_address, process_token, rc)
);
DEFINE_EVENT(cxl_hcall_control, cxl_hcall_control_function,
TP_PROTO(u64 unit_address, char *fct, u64 p1, u64 p2, u64 p3,
u64 p4, unsigned long r4, long rc),
TP_ARGS(unit_address, fct, p1, p2, p3, p4, r4, rc)
);
DEFINE_EVENT(cxl_hcall, cxl_hcall_collect_int_info,
TP_PROTO(u64 unit_address, u64 process_token, long rc),
TP_ARGS(unit_address, process_token, rc)
);
TRACE_EVENT(cxl_hcall_control_faults,
TP_PROTO(u64 unit_address, u64 process_token,
u64 control_mask, u64 reset_mask, unsigned long r4,
long rc),
TP_ARGS(unit_address, process_token,
control_mask, reset_mask, r4, rc),
TP_STRUCT__entry(
__field(u64, unit_address)
__field(u64, process_token)
__field(u64, control_mask)
__field(u64, reset_mask)
__field(unsigned long, r4)
__field(long, rc)
),
TP_fast_assign(
__entry->unit_address = unit_address;
__entry->process_token = process_token;
__entry->control_mask = control_mask;
__entry->reset_mask = reset_mask;
__entry->r4 = r4;
__entry->rc = rc;
),
TP_printk("unit_address=0x%016llx process_token=0x%llx "
"control_mask=%#llx reset_mask=%#llx r4=%#lx rc=%li",
__entry->unit_address,
__entry->process_token,
__entry->control_mask,
__entry->reset_mask,
__entry->r4,
__entry->rc
)
);
DEFINE_EVENT(cxl_hcall_control, cxl_hcall_control_facility,
TP_PROTO(u64 unit_address, char *fct, u64 p1, u64 p2, u64 p3,
u64 p4, unsigned long r4, long rc),
TP_ARGS(unit_address, fct, p1, p2, p3, p4, r4, rc)
);
TRACE_EVENT(cxl_hcall_download_facility,
TP_PROTO(u64 unit_address, char *fct, u64 list_address, u64 num,
unsigned long r4, long rc),
TP_ARGS(unit_address, fct, list_address, num, r4, rc),
TP_STRUCT__entry(
__field(u64, unit_address)
__field(char *, fct)
__field(u64, list_address)
__field(u64, num)
__field(unsigned long, r4)
__field(long, rc)
),
TP_fast_assign(
__entry->unit_address = unit_address;
__entry->fct = fct;
__entry->list_address = list_address;
__entry->num = num;
__entry->r4 = r4;
__entry->rc = rc;
),
TP_printk("%#.16llx, %s(%#llx, %#llx), %#lx): %li",
__entry->unit_address,
__entry->fct,
__entry->list_address,
__entry->num,
__entry->r4,
__entry->rc
)
);
#endif /* _CXL_TRACE_H */
/* This part must be outside protection */