* [PATCH 1/5] powerpc/perf/hv-24x7: use kmem_cache instead of aligned stack allocations
2014-10-01 6:03 [PATCH v3 0/5] powerpc/perf: Miscellaneous fixes Sukadev Bhattiprolu
@ 2014-10-01 6:03 ` Sukadev Bhattiprolu
2014-10-01 6:03 ` [PATCH 2/5] Simplify catalog_read() Sukadev Bhattiprolu
` (4 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: Sukadev Bhattiprolu @ 2014-10-01 6:03 UTC (permalink / raw)
To: Arnaldo Carvalho de Melo, ak, Jiri Olsa, peterz, eranian,
Paul Mackerras
Cc: Michael Ellerman, linux-kernel, dev, linuxppc-dev,
Anshuman Khandual
From: Cody P Schafer <dev@codyps.com>
Ian pointed out the use of __aligned(4096) caused rather large stack
consumption in single_24x7_request(), so use the kmem_cache
hv_page_cache (which we've already got set up for other allocations)
insead of allocating locally.
CC: Haren Myneni <hbabu@us.ibm.com>
Reported-by: Ian Munsie <imunsie@au1.ibm.com>
Signed-off-by: Cody P Schafer <dev@codyps.com>
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
---
Changelog [v3]:
[Michael Ellerman] Cleanup code and use kmem..zalloc()
arch/powerpc/perf/hv-24x7.c | 55 ++++++++++++++++++++++++++++++---------------
1 file changed, 37 insertions(+), 18 deletions(-)
diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c
index 70d4f74..697759d 100644
--- a/arch/powerpc/perf/hv-24x7.c
+++ b/arch/powerpc/perf/hv-24x7.c
@@ -294,7 +294,7 @@ static unsigned long single_24x7_request(u8 domain, u32 offset, u16 ix,
u16 lpar, u64 *res,
bool success_expected)
{
- unsigned long ret;
+ unsigned long ret = -ENOMEM;
/*
* request_buffer and result_buffer are not required to be 4k aligned,
@@ -304,7 +304,27 @@ static unsigned long single_24x7_request(u8 domain, u32 offset, u16 ix,
struct reqb {
struct hv_24x7_request_buffer buf;
struct hv_24x7_request req;
- } __packed __aligned(4096) request_buffer = {
+ } __packed *request_buffer;
+
+ struct {
+ struct hv_24x7_data_result_buffer buf;
+ struct hv_24x7_result res;
+ struct hv_24x7_result_element elem;
+ __be64 result;
+ } __packed *result_buffer;
+
+ BUILD_BUG_ON(sizeof(*request_buffer) > 4096);
+ BUILD_BUG_ON(sizeof(*result_buffer) > 4096);
+
+ request_buffer = kmem_cache_zalloc(hv_page_cache, GFP_USER);
+ if (!request_buffer)
+ goto out;
+
+ result_buffer = kmem_cache_zalloc(hv_page_cache, GFP_USER);
+ if (!result_buffer)
+ goto out_free_request_buffer;
+
+ *request_buffer = (struct reqb) {
.buf = {
.interface_version = HV_24X7_IF_VERSION_CURRENT,
.num_requests = 1,
@@ -320,28 +340,27 @@ static unsigned long single_24x7_request(u8 domain, u32 offset, u16 ix,
}
};
- struct resb {
- struct hv_24x7_data_result_buffer buf;
- struct hv_24x7_result res;
- struct hv_24x7_result_element elem;
- __be64 result;
- } __packed __aligned(4096) result_buffer = {};
-
ret = plpar_hcall_norets(H_GET_24X7_DATA,
- virt_to_phys(&request_buffer), sizeof(request_buffer),
- virt_to_phys(&result_buffer), sizeof(result_buffer));
+ virt_to_phys(request_buffer), sizeof(*request_buffer),
+ virt_to_phys(result_buffer), sizeof(*result_buffer));
if (ret) {
if (success_expected)
- pr_err_ratelimited("hcall failed: %d %#x %#x %d => 0x%lx (%ld) detail=0x%x failing ix=%x\n",
- domain, offset, ix, lpar,
- ret, ret,
- result_buffer.buf.detailed_rc,
- result_buffer.buf.failing_request_ix);
- return ret;
+ pr_err_ratelimited("hcall failed: %d %#x %#x %d => "
+ "0x%lx (%ld) detail=0x%x failing ix=%x\n",
+ domain, offset, ix, lpar, ret, ret,
+ result_buffer->buf.detailed_rc,
+ result_buffer->buf.failing_request_ix);
+ goto out_free_result_buffer;
}
- *res = be64_to_cpu(result_buffer.result);
+ *res = be64_to_cpu(result_buffer->result);
+
+out_free_result_buffer:
+ kfree(result_buffer);
+out_free_request_buffer:
+ kfree(request_buffer);
+out:
return ret;
}
--
1.8.3.1
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH 2/5] Simplify catalog_read()
2014-10-01 6:03 [PATCH v3 0/5] powerpc/perf: Miscellaneous fixes Sukadev Bhattiprolu
2014-10-01 6:03 ` [PATCH 1/5] powerpc/perf/hv-24x7: use kmem_cache instead of aligned stack allocations Sukadev Bhattiprolu
@ 2014-10-01 6:03 ` Sukadev Bhattiprolu
2014-10-01 6:03 ` [PATCH 3/5] perf Documentation: sysfs events/ interfaces Sukadev Bhattiprolu
` (3 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: Sukadev Bhattiprolu @ 2014-10-01 6:03 UTC (permalink / raw)
To: Arnaldo Carvalho de Melo, ak, Jiri Olsa, peterz, eranian,
Paul Mackerras
Cc: Michael Ellerman, linux-kernel, dev, linuxppc-dev,
Anshuman Khandual
catalog_read() implements the read interface for the sysfs file
/sys/bus/event_source/devices/hv_24x7/interface/catalog
It essentially takes a buffer, an offset and count as parameters
to the read() call. It makes a hypervisor call to read a specific
page from the catalog and copy the required bytes into the given
buffer. Each call to catalog_read() returns at most one 4K page.
Given these requirements, we should be able to simplify the
catalog_read().
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
---
Changelog[v3]
[Michael Ellerman] offset_in_page must be based on offsetr;
page_count is unnecessary.
arch/powerpc/perf/hv-24x7.c | 101 ++++++--------------------------------------
1 file changed, 14 insertions(+), 87 deletions(-)
diff --git a/arch/powerpc/perf/hv-24x7.c b/arch/powerpc/perf/hv-24x7.c
index 697759d..6c8710d 100644
--- a/arch/powerpc/perf/hv-24x7.c
+++ b/arch/powerpc/perf/hv-24x7.c
@@ -75,86 +75,6 @@ static struct attribute_group format_group = {
static struct kmem_cache *hv_page_cache;
-/*
- * read_offset_data - copy data from one buffer to another while treating the
- * source buffer as a small view on the total avaliable
- * source data.
- *
- * @dest: buffer to copy into
- * @dest_len: length of @dest in bytes
- * @requested_offset: the offset within the source data we want. Must be > 0
- * @src: buffer to copy data from
- * @src_len: length of @src in bytes
- * @source_offset: the offset in the sorce data that (src,src_len) refers to.
- * Must be > 0
- *
- * returns the number of bytes copied.
- *
- * The following ascii art shows the various buffer possitioning we need to
- * handle, assigns some arbitrary varibles to points on the buffer, and then
- * shows how we fiddle with those values to get things we care about (copy
- * start in src and copy len)
- *
- * s = @src buffer
- * d = @dest buffer
- * '.' areas in d are written to.
- *
- * u
- * x w v z
- * d |.........|
- * s |----------------------|
- *
- * u
- * x w z v
- * d |........------|
- * s |------------------|
- *
- * x w u,z,v
- * d |........|
- * s |------------------|
- *
- * x,w u,v,z
- * d |..................|
- * s |------------------|
- *
- * x u
- * w v z
- * d |........|
- * s |------------------|
- *
- * x z w v
- * d |------|
- * s |------|
- *
- * x = source_offset
- * w = requested_offset
- * z = source_offset + src_len
- * v = requested_offset + dest_len
- *
- * w_offset_in_s = w - x = requested_offset - source_offset
- * z_offset_in_s = z - x = src_len
- * v_offset_in_s = v - x = request_offset + dest_len - src_len
- */
-static ssize_t read_offset_data(void *dest, size_t dest_len,
- loff_t requested_offset, void *src,
- size_t src_len, loff_t source_offset)
-{
- size_t w_offset_in_s = requested_offset - source_offset;
- size_t z_offset_in_s = src_len;
- size_t v_offset_in_s = requested_offset + dest_len - src_len;
- size_t u_offset_in_s = min(z_offset_in_s, v_offset_in_s);
- size_t copy_len = u_offset_in_s - w_offset_in_s;
-
- if (requested_offset < 0 || source_offset < 0)
- return -EINVAL;
-
- if (z_offset_in_s <= w_offset_in_s)
- return 0;
-
- memcpy(dest, src + w_offset_in_s, copy_len);
- return copy_len;
-}
-
static unsigned long h_get_24x7_catalog_page_(unsigned long phys_4096,
unsigned long version,
unsigned long index)
@@ -183,8 +103,10 @@ static ssize_t catalog_read(struct file *filp, struct kobject *kobj,
{
unsigned long hret;
ssize_t ret = 0;
- size_t catalog_len = 0, catalog_page_len = 0, page_count = 0;
+ size_t catalog_len = 0, catalog_page_len = 0;
loff_t page_offset = 0;
+ loff_t offset_in_page;
+ size_t copy_len;
uint64_t catalog_version_num = 0;
void *page = kmem_cache_alloc(hv_page_cache, GFP_USER);
struct hv_24x7_catalog_page_0 *page_0 = page;
@@ -202,7 +124,7 @@ static ssize_t catalog_read(struct file *filp, struct kobject *kobj,
catalog_len = catalog_page_len * 4096;
page_offset = offset / 4096;
- page_count = count / 4096;
+ offset_in_page = offset % 4096;
if (page_offset >= catalog_page_len)
goto e_free;
@@ -216,8 +138,13 @@ static ssize_t catalog_read(struct file *filp, struct kobject *kobj,
}
}
- ret = read_offset_data(buf, count, offset,
- page, 4096, page_offset * 4096);
+ copy_len = 4096 - offset_in_page;
+ if (copy_len > count)
+ copy_len = count;
+
+ memcpy(buf, page+offset_in_page, copy_len);
+ ret = copy_len;
+
e_free:
if (hret)
pr_err("h_get_24x7_catalog_page(ver=%lld, page=%lld) failed:"
@@ -225,9 +152,9 @@ e_free:
catalog_version_num, page_offset, hret);
kmem_cache_free(hv_page_cache, page);
- pr_devel("catalog_read: offset=%lld(%lld) count=%zu(%zu) catalog_len=%zu(%zu) => %zd\n",
- offset, page_offset, count, page_count, catalog_len,
- catalog_page_len, ret);
+ pr_devel("catalog_read: offset=%lld(%lld) count=%zu "
+ "catalog_len=%zu(%zu) => %zd\n", offset, page_offset,
+ count, catalog_len, catalog_page_len, ret);
return ret;
}
--
1.8.3.1
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH 3/5] perf Documentation: sysfs events/ interfaces
2014-10-01 6:03 [PATCH v3 0/5] powerpc/perf: Miscellaneous fixes Sukadev Bhattiprolu
2014-10-01 6:03 ` [PATCH 1/5] powerpc/perf/hv-24x7: use kmem_cache instead of aligned stack allocations Sukadev Bhattiprolu
2014-10-01 6:03 ` [PATCH 2/5] Simplify catalog_read() Sukadev Bhattiprolu
@ 2014-10-01 6:03 ` Sukadev Bhattiprolu
2014-10-01 6:03 ` [PATCH 4/5] perf Documentation: remove duplicated docs for powerpc cpu specific events Sukadev Bhattiprolu
` (2 subsequent siblings)
5 siblings, 0 replies; 7+ messages in thread
From: Sukadev Bhattiprolu @ 2014-10-01 6:03 UTC (permalink / raw)
To: Arnaldo Carvalho de Melo, ak, Jiri Olsa, peterz, eranian,
Paul Mackerras
Cc: Michael Ellerman, linux-kernel, dev, linuxppc-dev,
Anshuman Khandual
From: Cody P Schafer <dev@codyps.com>
Add documentation for the <event>, <event>.scale, and <event>.unit
files in sysfs.
<event>.scale and <event>.unit were undocumented.
<event> was previously documented only for specific powerpc pmu events.
CC: Haren Myneni <hbabu@us.ibm.com>
Signed-off-by: Cody P Schafer <dev@codyps.com>
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
---
.../testing/sysfs-bus-event_source-devices-events | 60 ++++++++++++++++++++++
1 file changed, 60 insertions(+)
diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-events b/Documentation/ABI/testing/sysfs-bus-event_source-devices-events
index 7b40a3c..a5226f0 100644
--- a/Documentation/ABI/testing/sysfs-bus-event_source-devices-events
+++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-events
@@ -599,3 +599,63 @@ Description: POWER-systems specific performance monitoring events
Further, multiple terms like 'event=0xNNNN' can be specified
and separated with comma. All available terms are defined in
the /sys/bus/event_source/devices/<dev>/format file.
+
+What: /sys/bus/event_source/devices/<pmu>/events/<event>
+Date: 2014/02/24
+Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
+Description: Per-pmu performance monitoring events specific to the running system
+
+ Each file (except for some of those with a '.' in them, '.unit'
+ and '.scale') in the 'events' directory describes a single
+ performance monitoring event supported by the <pmu>. The name
+ of the file is the name of the event.
+
+ File contents:
+
+ <term>[=<value>][,<term>[=<value>]]...
+
+ Where <term> is one of the terms listed under
+ /sys/bus/event_source/devices/<pmu>/format/ and <value> is
+ a number is base-16 format with a '0x' prefix (lowercase only).
+ If a <term> is specified alone (without an assigned value), it
+ is implied that 0x1 is assigned to that <term>.
+
+ Examples (each of these lines would be in a seperate file):
+
+ event=0x2abc
+ event=0x423,inv,cmask=0x3
+ domain=0x1,offset=0x8,starting_index=0xffff
+
+ Each of the assignments indicates a value to be assigned to a
+ particular set of bits (as defined by the format file
+ corresponding to the <term>) in the perf_event structure passed
+ to the perf_open syscall.
+
+What: /sys/bus/event_source/devices/<pmu>/events/<event>.unit
+Date: 2014/02/24
+Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
+Description: Perf event units
+
+ A string specifying the English plural numerical unit that <event>
+ (once multiplied by <event>.scale) represents.
+
+ Example:
+
+ Joules
+
+What: /sys/bus/event_source/devices/<pmu>/events/<event>.scale
+Date: 2014/02/24
+Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
+Description: Perf event scaling factors
+
+ A string representing a floating point value expressed in
+ scientific notation to be multiplied by the event count
+ recieved from the kernel to match the unit specified in the
+ <event>.unit file.
+
+ Example:
+
+ 2.3283064365386962890625e-10
+
+ This is provided to avoid performing floating point arithmetic
+ in the kernel.
--
1.8.3.1
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH 4/5] perf Documentation: remove duplicated docs for powerpc cpu specific events
2014-10-01 6:03 [PATCH v3 0/5] powerpc/perf: Miscellaneous fixes Sukadev Bhattiprolu
` (2 preceding siblings ...)
2014-10-01 6:03 ` [PATCH 3/5] perf Documentation: sysfs events/ interfaces Sukadev Bhattiprolu
@ 2014-10-01 6:03 ` Sukadev Bhattiprolu
2014-10-01 6:03 ` [PATCH 5/5] powerpc: Update contact info in Documentation files Sukadev Bhattiprolu
2014-10-07 6:23 ` [PATCH v3 0/5] powerpc/perf: Miscellaneous fixes Sukadev Bhattiprolu
5 siblings, 0 replies; 7+ messages in thread
From: Sukadev Bhattiprolu @ 2014-10-01 6:03 UTC (permalink / raw)
To: Arnaldo Carvalho de Melo, ak, Jiri Olsa, peterz, eranian,
Paul Mackerras
Cc: Michael Ellerman, linux-kernel, dev, linuxppc-dev,
Anshuman Khandual
From: Cody P Schafer <dev@codyps.com>
Listing specific events doesn't actually help us at all here because:
- these events actually vary between different ppc processors, they
aren't garunteed to be present.
- the documentation of the (generic) file contents is now superceded by the
docs for arbitrary event file contents.
CC: Haren Myneni <hbabu@us.ibm.com>
Signed-off-by: Cody P Schafer <dev@codyps.com>
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
---
.../testing/sysfs-bus-event_source-devices-events | 573 ---------------------
1 file changed, 573 deletions(-)
diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-events b/Documentation/ABI/testing/sysfs-bus-event_source-devices-events
index a5226f0..20979f8 100644
--- a/Documentation/ABI/testing/sysfs-bus-event_source-devices-events
+++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-events
@@ -27,579 +27,6 @@ Description: Generic performance monitoring events
"basename".
-What: /sys/devices/cpu/events/PM_1PLUS_PPC_CMPL
- /sys/devices/cpu/events/PM_BRU_FIN
- /sys/devices/cpu/events/PM_BR_MPRED
- /sys/devices/cpu/events/PM_CMPLU_STALL
- /sys/devices/cpu/events/PM_CMPLU_STALL_BRU
- /sys/devices/cpu/events/PM_CMPLU_STALL_DCACHE_MISS
- /sys/devices/cpu/events/PM_CMPLU_STALL_DFU
- /sys/devices/cpu/events/PM_CMPLU_STALL_DIV
- /sys/devices/cpu/events/PM_CMPLU_STALL_ERAT_MISS
- /sys/devices/cpu/events/PM_CMPLU_STALL_FXU
- /sys/devices/cpu/events/PM_CMPLU_STALL_IFU
- /sys/devices/cpu/events/PM_CMPLU_STALL_LSU
- /sys/devices/cpu/events/PM_CMPLU_STALL_REJECT
- /sys/devices/cpu/events/PM_CMPLU_STALL_SCALAR
- /sys/devices/cpu/events/PM_CMPLU_STALL_SCALAR_LONG
- /sys/devices/cpu/events/PM_CMPLU_STALL_STORE
- /sys/devices/cpu/events/PM_CMPLU_STALL_THRD
- /sys/devices/cpu/events/PM_CMPLU_STALL_VECTOR
- /sys/devices/cpu/events/PM_CMPLU_STALL_VECTOR_LONG
- /sys/devices/cpu/events/PM_CYC
- /sys/devices/cpu/events/PM_GCT_NOSLOT_BR_MPRED
- /sys/devices/cpu/events/PM_GCT_NOSLOT_BR_MPRED_IC_MISS
- /sys/devices/cpu/events/PM_GCT_NOSLOT_CYC
- /sys/devices/cpu/events/PM_GCT_NOSLOT_IC_MISS
- /sys/devices/cpu/events/PM_GRP_CMPL
- /sys/devices/cpu/events/PM_INST_CMPL
- /sys/devices/cpu/events/PM_LD_MISS_L1
- /sys/devices/cpu/events/PM_LD_REF_L1
- /sys/devices/cpu/events/PM_RUN_CYC
- /sys/devices/cpu/events/PM_RUN_INST_CMPL
- /sys/devices/cpu/events/PM_IC_DEMAND_L2_BR_ALL
- /sys/devices/cpu/events/PM_GCT_UTIL_7_TO_10_SLOTS
- /sys/devices/cpu/events/PM_PMC2_SAVED
- /sys/devices/cpu/events/PM_VSU0_16FLOP
- /sys/devices/cpu/events/PM_MRK_LSU_DERAT_MISS
- /sys/devices/cpu/events/PM_MRK_ST_CMPL
- /sys/devices/cpu/events/PM_NEST_PAIR3_ADD
- /sys/devices/cpu/events/PM_L2_ST_DISP
- /sys/devices/cpu/events/PM_L2_CASTOUT_MOD
- /sys/devices/cpu/events/PM_ISEG
- /sys/devices/cpu/events/PM_MRK_INST_TIMEO
- /sys/devices/cpu/events/PM_L2_RCST_DISP_FAIL_ADDR
- /sys/devices/cpu/events/PM_LSU1_DC_PREF_STREAM_CONFIRM
- /sys/devices/cpu/events/PM_IERAT_WR_64K
- /sys/devices/cpu/events/PM_MRK_DTLB_MISS_16M
- /sys/devices/cpu/events/PM_IERAT_MISS
- /sys/devices/cpu/events/PM_MRK_PTEG_FROM_LMEM
- /sys/devices/cpu/events/PM_FLOP
- /sys/devices/cpu/events/PM_THRD_PRIO_4_5_CYC
- /sys/devices/cpu/events/PM_BR_PRED_TA
- /sys/devices/cpu/events/PM_EXT_INT
- /sys/devices/cpu/events/PM_VSU_FSQRT_FDIV
- /sys/devices/cpu/events/PM_MRK_LD_MISS_EXPOSED_CYC
- /sys/devices/cpu/events/PM_LSU1_LDF
- /sys/devices/cpu/events/PM_IC_WRITE_ALL
- /sys/devices/cpu/events/PM_LSU0_SRQ_STFWD
- /sys/devices/cpu/events/PM_PTEG_FROM_RL2L3_MOD
- /sys/devices/cpu/events/PM_MRK_DATA_FROM_L31_SHR
- /sys/devices/cpu/events/PM_DATA_FROM_L21_MOD
- /sys/devices/cpu/events/PM_VSU1_SCAL_DOUBLE_ISSUED
- /sys/devices/cpu/events/PM_VSU0_8FLOP
- /sys/devices/cpu/events/PM_POWER_EVENT1
- /sys/devices/cpu/events/PM_DISP_CLB_HELD_BAL
- /sys/devices/cpu/events/PM_VSU1_2FLOP
- /sys/devices/cpu/events/PM_LWSYNC_HELD
- /sys/devices/cpu/events/PM_PTEG_FROM_DL2L3_SHR
- /sys/devices/cpu/events/PM_INST_FROM_L21_MOD
- /sys/devices/cpu/events/PM_IERAT_XLATE_WR_16MPLUS
- /sys/devices/cpu/events/PM_IC_REQ_ALL
- /sys/devices/cpu/events/PM_DSLB_MISS
- /sys/devices/cpu/events/PM_L3_MISS
- /sys/devices/cpu/events/PM_LSU0_L1_PREF
- /sys/devices/cpu/events/PM_VSU_SCALAR_SINGLE_ISSUED
- /sys/devices/cpu/events/PM_LSU1_DC_PREF_STREAM_CONFIRM_STRIDE
- /sys/devices/cpu/events/PM_L2_INST
- /sys/devices/cpu/events/PM_VSU0_FRSP
- /sys/devices/cpu/events/PM_FLUSH_DISP
- /sys/devices/cpu/events/PM_PTEG_FROM_L2MISS
- /sys/devices/cpu/events/PM_VSU1_DQ_ISSUED
- /sys/devices/cpu/events/PM_MRK_DATA_FROM_DMEM
- /sys/devices/cpu/events/PM_LSU_FLUSH_ULD
- /sys/devices/cpu/events/PM_PTEG_FROM_LMEM
- /sys/devices/cpu/events/PM_MRK_DERAT_MISS_16M
- /sys/devices/cpu/events/PM_THRD_ALL_RUN_CYC
- /sys/devices/cpu/events/PM_MEM0_PREFETCH_DISP
- /sys/devices/cpu/events/PM_MRK_STALL_CMPLU_CYC_COUNT
- /sys/devices/cpu/events/PM_DATA_FROM_DL2L3_MOD
- /sys/devices/cpu/events/PM_VSU_FRSP
- /sys/devices/cpu/events/PM_MRK_DATA_FROM_L21_MOD
- /sys/devices/cpu/events/PM_PMC1_OVERFLOW
- /sys/devices/cpu/events/PM_VSU0_SINGLE
- /sys/devices/cpu/events/PM_MRK_PTEG_FROM_L3MISS
- /sys/devices/cpu/events/PM_MRK_PTEG_FROM_L31_SHR
- /sys/devices/cpu/events/PM_VSU0_VECTOR_SP_ISSUED
- /sys/devices/cpu/events/PM_VSU1_FEST
- /sys/devices/cpu/events/PM_MRK_INST_DISP
- /sys/devices/cpu/events/PM_VSU0_COMPLEX_ISSUED
- /sys/devices/cpu/events/PM_LSU1_FLUSH_UST
- /sys/devices/cpu/events/PM_FXU_IDLE
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- /sys/devices/cpu/events/PM_INST_PTEG_FROM_L21_MOD
- /sys/devices/cpu/events/PM_INST_FROM_RL2L3_MOD
- /sys/devices/cpu/events/PM_SHL_CREATED
- /sys/devices/cpu/events/PM_L2_ST_HIT
- /sys/devices/cpu/events/PM_DATA_FROM_DMEM
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- /sys/devices/cpu/events/PM_L2_SN_SX_I_DONE
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- /sys/devices/cpu/events/PM_INST_FROM_L2
- /sys/devices/cpu/events/PM_GRP_BR_MPRED_NONSPEC
- /sys/devices/cpu/events/PM_INST_DISP
- /sys/devices/cpu/events/PM_MEM0_RD_CANCEL_TOTAL
- /sys/devices/cpu/events/PM_LSU0_DC_PREF_STREAM_CONFIRM
- /sys/devices/cpu/events/PM_L1_DCACHE_RELOAD_VALID
- /sys/devices/cpu/events/PM_VSU_SCALAR_DOUBLE_ISSUED
- /sys/devices/cpu/events/PM_L3_PREF_HIT
- /sys/devices/cpu/events/PM_MRK_PTEG_FROM_L31_MOD
- /sys/devices/cpu/events/PM_MRK_FXU_FIN
- /sys/devices/cpu/events/PM_PMC4_OVERFLOW
- /sys/devices/cpu/events/PM_MRK_PTEG_FROM_L3
- /sys/devices/cpu/events/PM_LSU0_LMQ_LHR_MERGE
- /sys/devices/cpu/events/PM_BTAC_HIT
- /sys/devices/cpu/events/PM_L3_RD_BUSY
- /sys/devices/cpu/events/PM_LSU0_L1_SW_PREF
- /sys/devices/cpu/events/PM_INST_FROM_L2MISS
- /sys/devices/cpu/events/PM_LSU0_DC_PREF_STREAM_ALLOC
- /sys/devices/cpu/events/PM_L2_ST
- /sys/devices/cpu/events/PM_VSU0_DENORM
- /sys/devices/cpu/events/PM_MRK_DATA_FROM_DL2L3_SHR
- /sys/devices/cpu/events/PM_BR_PRED_CR_TA
- /sys/devices/cpu/events/PM_VSU0_FCONV
- /sys/devices/cpu/events/PM_MRK_LSU_FLUSH_ULD
- /sys/devices/cpu/events/PM_BTAC_MISS
- /sys/devices/cpu/events/PM_MRK_LD_MISS_EXPOSED_CYC_COUNT
- /sys/devices/cpu/events/PM_MRK_DATA_FROM_L2
- /sys/devices/cpu/events/PM_LSU_DCACHE_RELOAD_VALID
- /sys/devices/cpu/events/PM_VSU_FMA
- /sys/devices/cpu/events/PM_LSU0_FLUSH_SRQ
- /sys/devices/cpu/events/PM_LSU1_L1_PREF
- /sys/devices/cpu/events/PM_IOPS_CMPL
- /sys/devices/cpu/events/PM_L2_SYS_PUMP
- /sys/devices/cpu/events/PM_L2_RCLD_BUSY_RC_FULL
- /sys/devices/cpu/events/PM_LSU_LMQ_S0_ALLOC
- /sys/devices/cpu/events/PM_FLUSH_DISP_SYNC
- /sys/devices/cpu/events/PM_MRK_DATA_FROM_DL2L3_MOD_CYC
- /sys/devices/cpu/events/PM_L2_IC_INV
- /sys/devices/cpu/events/PM_MRK_DATA_FROM_L21_MOD_CYC
- /sys/devices/cpu/events/PM_L3_PREF_LDST
- /sys/devices/cpu/events/PM_LSU_SRQ_EMPTY_CYC
- /sys/devices/cpu/events/PM_LSU_LMQ_S0_VALID
- /sys/devices/cpu/events/PM_FLUSH_PARTIAL
- /sys/devices/cpu/events/PM_VSU1_FMA_DOUBLE
- /sys/devices/cpu/events/PM_1PLUS_PPC_DISP
- /sys/devices/cpu/events/PM_DATA_FROM_L2MISS
- /sys/devices/cpu/events/PM_SUSPENDED
- /sys/devices/cpu/events/PM_VSU0_FMA
- /sys/devices/cpu/events/PM_STCX_FAIL
- /sys/devices/cpu/events/PM_VSU0_FSQRT_FDIV_DOUBLE
- /sys/devices/cpu/events/PM_DC_PREF_DST
- /sys/devices/cpu/events/PM_VSU1_SCAL_SINGLE_ISSUED
- /sys/devices/cpu/events/PM_L3_HIT
- /sys/devices/cpu/events/PM_L2_GLOB_GUESS_WRONG
- /sys/devices/cpu/events/PM_MRK_DFU_FIN
- /sys/devices/cpu/events/PM_INST_FROM_L1
- /sys/devices/cpu/events/PM_IC_DEMAND_REQ
- /sys/devices/cpu/events/PM_VSU1_FSQRT_FDIV_DOUBLE
- /sys/devices/cpu/events/PM_VSU1_FMA
- /sys/devices/cpu/events/PM_MRK_LD_MISS_L1
- /sys/devices/cpu/events/PM_VSU0_2FLOP_DOUBLE
- /sys/devices/cpu/events/PM_LSU_DC_PREF_STRIDED_STREAM_CONFIRM
- /sys/devices/cpu/events/PM_INST_PTEG_FROM_L31_SHR
- /sys/devices/cpu/events/PM_MRK_LSU_REJECT_ERAT_MISS
- /sys/devices/cpu/events/PM_MRK_DATA_FROM_L2MISS
- /sys/devices/cpu/events/PM_DATA_FROM_RL2L3_SHR
- /sys/devices/cpu/events/PM_INST_FROM_PREF
- /sys/devices/cpu/events/PM_VSU1_SQ
- /sys/devices/cpu/events/PM_L2_LD_DISP
- /sys/devices/cpu/events/PM_L2_DISP_ALL
- /sys/devices/cpu/events/PM_THRD_GRP_CMPL_BOTH_CYC
- /sys/devices/cpu/events/PM_VSU_FSQRT_FDIV_DOUBLE
- /sys/devices/cpu/events/PM_INST_PTEG_FROM_DL2L3_SHR
- /sys/devices/cpu/events/PM_VSU_1FLOP
- /sys/devices/cpu/events/PM_HV_CYC
- /sys/devices/cpu/events/PM_MRK_LSU_FIN
- /sys/devices/cpu/events/PM_MRK_DATA_FROM_RL2L3_SHR
- /sys/devices/cpu/events/PM_DTLB_MISS_16M
- /sys/devices/cpu/events/PM_LSU1_LMQ_LHR_MERGE
- /sys/devices/cpu/events/PM_IFU_FIN
- /sys/devices/cpu/events/PM_1THRD_CON_RUN_INSTR
- /sys/devices/cpu/events/PM_CMPLU_STALL_COUNT
- /sys/devices/cpu/events/PM_MEM0_PB_RD_CL
- /sys/devices/cpu/events/PM_THRD_1_RUN_CYC
- /sys/devices/cpu/events/PM_THRD_2_CONC_RUN_INSTR
- /sys/devices/cpu/events/PM_THRD_2_RUN_CYC
- /sys/devices/cpu/events/PM_THRD_3_CONC_RUN_INST
- /sys/devices/cpu/events/PM_THRD_3_RUN_CYC
- /sys/devices/cpu/events/PM_THRD_4_CONC_RUN_INST
- /sys/devices/cpu/events/PM_THRD_4_RUN_CYC
-
-Date: 2013/01/08
-
-Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
- Linux Powerpc mailing list <linuxppc-dev@ozlabs.org>
-
-Description: POWER-systems specific performance monitoring events
-
- A collection of performance monitoring events that may be
- supported by the POWER CPU. These events can be monitored
- using the 'perf(1)' tool.
-
- These events may not be supported by other CPUs.
-
- The contents of each file would look like:
-
- event=0xNNNN
-
- where 'N' is a hex digit and the number '0xNNNN' shows the
- "raw code" for the perf event identified by the file's
- "basename".
-
- Further, multiple terms like 'event=0xNNNN' can be specified
- and separated with comma. All available terms are defined in
- the /sys/bus/event_source/devices/<dev>/format file.
-
What: /sys/bus/event_source/devices/<pmu>/events/<event>
Date: 2014/02/24
Contact: Linux kernel mailing list <linux-kernel@vger.kernel.org>
--
1.8.3.1
^ permalink raw reply related [flat|nested] 7+ messages in thread* [PATCH 5/5] powerpc: Update contact info in Documentation files
2014-10-01 6:03 [PATCH v3 0/5] powerpc/perf: Miscellaneous fixes Sukadev Bhattiprolu
` (3 preceding siblings ...)
2014-10-01 6:03 ` [PATCH 4/5] perf Documentation: remove duplicated docs for powerpc cpu specific events Sukadev Bhattiprolu
@ 2014-10-01 6:03 ` Sukadev Bhattiprolu
2014-10-07 6:23 ` [PATCH v3 0/5] powerpc/perf: Miscellaneous fixes Sukadev Bhattiprolu
5 siblings, 0 replies; 7+ messages in thread
From: Sukadev Bhattiprolu @ 2014-10-01 6:03 UTC (permalink / raw)
To: Arnaldo Carvalho de Melo, ak, Jiri Olsa, peterz, eranian,
Paul Mackerras
Cc: Michael Ellerman, linux-kernel, dev, linuxppc-dev,
Anshuman Khandual
Cody's email address has changed. Update the contact information for
the 24x7 and GPCI counters to the PowerPC developers mailing list.
Signed-off-by: Sukadev Bhattiprolu <sukadev@linux.vnet.ibm.com>
---
.../ABI/testing/sysfs-bus-event_source-devices-hv_24x7 | 6 +++---
.../ABI/testing/sysfs-bus-event_source-devices-hv_gpci | 12 ++++++------
2 files changed, 9 insertions(+), 9 deletions(-)
diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7 b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7
index e78ee79..32f3f5f 100644
--- a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7
+++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_24x7
@@ -1,6 +1,6 @@
What: /sys/bus/event_source/devices/hv_24x7/interface/catalog
Date: February 2014
-Contact: Cody P Schafer <cody@linux.vnet.ibm.com>
+Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
Description:
Provides access to the binary "24x7 catalog" provided by the
hypervisor on POWER7 and 8 systems. This catalog lists events
@@ -10,14 +10,14 @@ Description:
What: /sys/bus/event_source/devices/hv_24x7/interface/catalog_length
Date: February 2014
-Contact: Cody P Schafer <cody@linux.vnet.ibm.com>
+Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
Description:
A number equal to the length in bytes of the catalog. This is
also extractable from the provided binary "catalog" sysfs entry.
What: /sys/bus/event_source/devices/hv_24x7/interface/catalog_version
Date: February 2014
-Contact: Cody P Schafer <cody@linux.vnet.ibm.com>
+Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
Description:
Exposes the "version" field of the 24x7 catalog. This is also
extractable from the provided binary "catalog" sysfs entry.
diff --git a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci
index 3fa58c2..3ca4e55 100644
--- a/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci
+++ b/Documentation/ABI/testing/sysfs-bus-event_source-devices-hv_gpci
@@ -1,6 +1,6 @@
What: /sys/bus/event_source/devices/hv_gpci/interface/collect_privileged
Date: February 2014
-Contact: Cody P Schafer <cody@linux.vnet.ibm.com>
+Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
Description:
'0' if the hypervisor is configured to forbid access to event
counters being accumulated by other guests and to physical
@@ -9,35 +9,35 @@ Description:
What: /sys/bus/event_source/devices/hv_gpci/interface/ga
Date: February 2014
-Contact: Cody P Schafer <cody@linux.vnet.ibm.com>
+Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
Description:
0 or 1. Indicates whether we have access to "GA" events (listed
in arch/powerpc/perf/hv-gpci.h).
What: /sys/bus/event_source/devices/hv_gpci/interface/expanded
Date: February 2014
-Contact: Cody P Schafer <cody@linux.vnet.ibm.com>
+Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
Description:
0 or 1. Indicates whether we have access to "EXPANDED" events (listed
in arch/powerpc/perf/hv-gpci.h).
What: /sys/bus/event_source/devices/hv_gpci/interface/lab
Date: February 2014
-Contact: Cody P Schafer <cody@linux.vnet.ibm.com>
+Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
Description:
0 or 1. Indicates whether we have access to "LAB" events (listed
in arch/powerpc/perf/hv-gpci.h).
What: /sys/bus/event_source/devices/hv_gpci/interface/version
Date: February 2014
-Contact: Cody P Schafer <cody@linux.vnet.ibm.com>
+Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
Description:
A number indicating the version of the gpci interface that the
hypervisor reports supporting.
What: /sys/bus/event_source/devices/hv_gpci/interface/kernel_version
Date: February 2014
-Contact: Cody P Schafer <cody@linux.vnet.ibm.com>
+Contact: Linux on PowerPC Developer List <linuxppc-dev@lists.ozlabs.org>
Description:
A number indicating the latest version of the gpci interface
that the kernel is aware of.
--
1.8.3.1
^ permalink raw reply related [flat|nested] 7+ messages in thread* Re: [PATCH v3 0/5] powerpc/perf: Miscellaneous fixes
2014-10-01 6:03 [PATCH v3 0/5] powerpc/perf: Miscellaneous fixes Sukadev Bhattiprolu
` (4 preceding siblings ...)
2014-10-01 6:03 ` [PATCH 5/5] powerpc: Update contact info in Documentation files Sukadev Bhattiprolu
@ 2014-10-07 6:23 ` Sukadev Bhattiprolu
5 siblings, 0 replies; 7+ messages in thread
From: Sukadev Bhattiprolu @ 2014-10-07 6:23 UTC (permalink / raw)
To: Arnaldo Carvalho de Melo, ak, Jiri Olsa, peterz, eranian,
Paul Mackerras
Cc: linuxppc-dev, dev, linux-kernel, Michael Ellerman,
Anshuman Khandual
[-- Attachment #1: Type: text/plain, Size: 945 bytes --]
Sukadev Bhattiprolu [sukadev@linux.vnet.ibm.com] wrote:
| Miscellaenous fixes for perf and 24x7 counters in powerpc.
|
| Patches 1,3,4 were submitted earlier as a part of the parametrized
| events for 24x7 counters. But they are not directly related to the
| parametrized events.
|
| Patch 2 simplifies and fixes a bug in catalog_read() which causes the
| catalog file to not read first page.
|
| Changelog[v3]
| [Michael Ellerman] Cleanup patches 1 and 2 and fix a bug
| Add patch 5/5 to update contact info for 24x7 and GPCI counters
|
| Changelog[v2]
| Rebase to perf/core tree.
|
| Cody P Schafer (3):
| powerpc/perf/hv-24x7: use kmem_cache instead of aligned stack
| allocations
| perf Documentation: sysfs events/ interfaces
| perf Documentation: remove duplicated docs for powerpc cpu specific
| events
Per Michael Ellerman's suggestion, attaching an informal test case to
demonstrate the bug and the fix.
Sukadev
[-- Attachment #2: cp-catalog.c --]
[-- Type: text/x-csrc, Size: 1420 bytes --]
#include <stdio.h>
#include <fcntl.h>
#include <string.h>
#include <sys/stat.h>
/*
* Usage: cp-catalog <read_size>
*
* Read the catalog from beginning to end. Read 'read_size' bytes
* on each read.
*
* To ensure that a bug in catalog_read() in the kernel code is fixed.
* cp-catalog 5 > /tmp/catalog-5
* cp-catalog > /tmp/catalog-4096
* diff /tmp/catalog-5 /tmp/catalog-4096
*
* If both files are identical and size is about 256K, the bug is fixed.
*/
#define CATALOG "/sys/bus/event_source/devices/hv_24x7/interface/catalog"
#define TMP_CATALOG "/tmp/catalog"
main(int argc, char *argv[])
{
int read_size, rfd, wfd, rc;
struct stat stat_buf;
char *input_file;
char buf[4096];
char output_file[256];
read_size = 4096;
if (argc > 1)
read_size = atoi(argv[1]);
if (read_size > sizeof(buf))
read_size = sizeof(buf);
input_file = CATALOG;
sprintf(output_file, "%s-%d", TMP_CATALOG, read_size);
rfd = open(input_file, O_RDONLY);
if (rfd < 0) {
perror(input_file);
_Exit(1);
}
wfd = open(output_file, O_WRONLY|O_CREAT|O_TRUNC);
if (wfd < 0) {
perror(output_file);
_Exit(1);
}
while(1) {
memset(buf, 0, sizeof(buf));
rc = read(rfd, buf, read_size);
if (rc <= 0)
break;
if (write(wfd, buf, rc) != rc) {
perror("write()");
break;
}
}
if (fstat(wfd, &stat_buf) < 0) {
perror("fstat()");
_Exit(1);
}
printf("catalog size %zd\n", stat_buf.st_size);
}
^ permalink raw reply [flat|nested] 7+ messages in thread