lkml.org 
[lkml]   [2019]   [Nov]   [21]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Date
SubjectRe: [PATCH 01/15] perf tools: Add kernel AUX area sampling definitions
Em Fri, Nov 15, 2019 at 02:42:11PM +0200, Adrian Hunter escreveu:
> Add kernel AUX area sampling definitions, which brings perf_event.h into
> line with the kernel version.
>
> New sample type PERF_SAMPLE_AUX requests a sample of the AUX area buffer.
> New perf_event_attr member 'aux_sample_size' specifies the desired size of
> the sample.

I squashed the first two patches in this series and added this note:

Committer notes:

I squashed the first two patches in this series to avoid breaking
automatic bisection, i.e. after applying only the original first patch
in this series we would have:

# perf test -v parsing
26: Sample parsing :
--- start ---
test child forked, pid 17018
sample format has changed, some new PERF_SAMPLE_ bit was introduced - test needs updating
test child finished with -1
---- end ----
Sample parsing: FAILED!
#

With the two paches combined:

# perf test parsing
26: Sample parsing : Ok
#

Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
Tested-by: Arnaldo Carvalho de Melo <acme@redhat.com>


> Signed-off-by: Adrian Hunter <adrian.hunter@intel.com>
> ---
> tools/include/uapi/linux/perf_event.h | 10 ++++++++--
> tools/perf/tests/attr/base-record | 2 +-
> tools/perf/tests/attr/base-stat | 2 +-
> tools/perf/util/perf_event_attr_fprintf.c | 1 +
> tools/perf/util/session.c | 1 +
> 5 files changed, 12 insertions(+), 4 deletions(-)
>
> diff --git a/tools/include/uapi/linux/perf_event.h b/tools/include/uapi/linux/perf_event.h
> index bb7b271397a6..377d794d3105 100644
> --- a/tools/include/uapi/linux/perf_event.h
> +++ b/tools/include/uapi/linux/perf_event.h
> @@ -141,8 +141,9 @@ enum perf_event_sample_format {
> PERF_SAMPLE_TRANSACTION = 1U << 17,
> PERF_SAMPLE_REGS_INTR = 1U << 18,
> PERF_SAMPLE_PHYS_ADDR = 1U << 19,
> + PERF_SAMPLE_AUX = 1U << 20,
>
> - PERF_SAMPLE_MAX = 1U << 20, /* non-ABI */
> + PERF_SAMPLE_MAX = 1U << 21, /* non-ABI */
>
> __PERF_SAMPLE_CALLCHAIN_EARLY = 1ULL << 63, /* non-ABI; internal use */
> };
> @@ -300,6 +301,7 @@ enum perf_event_read_format {
> /* add: sample_stack_user */
> #define PERF_ATTR_SIZE_VER4 104 /* add: sample_regs_intr */
> #define PERF_ATTR_SIZE_VER5 112 /* add: aux_watermark */
> +#define PERF_ATTR_SIZE_VER6 120 /* add: aux_sample_size */
>
> /*
> * Hardware event_id to monitor via a performance monitoring event:
> @@ -424,7 +426,9 @@ struct perf_event_attr {
> */
> __u32 aux_watermark;
> __u16 sample_max_stack;
> - __u16 __reserved_2; /* align to __u64 */
> + __u16 __reserved_2;
> + __u32 aux_sample_size;
> + __u32 __reserved_3;
> };
>
> /*
> @@ -864,6 +868,8 @@ enum perf_event_type {
> * { u64 abi; # enum perf_sample_regs_abi
> * u64 regs[weight(mask)]; } && PERF_SAMPLE_REGS_INTR
> * { u64 phys_addr;} && PERF_SAMPLE_PHYS_ADDR
> + * { u64 size;
> + * char data[size]; } && PERF_SAMPLE_AUX
> * };
> */
> PERF_RECORD_SAMPLE = 9,
> diff --git a/tools/perf/tests/attr/base-record b/tools/perf/tests/attr/base-record
> index efd0157b9d22..645009c08b3c 100644
> --- a/tools/perf/tests/attr/base-record
> +++ b/tools/perf/tests/attr/base-record
> @@ -5,7 +5,7 @@ group_fd=-1
> flags=0|8
> cpu=*
> type=0|1
> -size=112
> +size=120
> config=0
> sample_period=*
> sample_type=263
> diff --git a/tools/perf/tests/attr/base-stat b/tools/perf/tests/attr/base-stat
> index 4d0c2e42b64e..b0f42c34882e 100644
> --- a/tools/perf/tests/attr/base-stat
> +++ b/tools/perf/tests/attr/base-stat
> @@ -5,7 +5,7 @@ group_fd=-1
> flags=0|8
> cpu=*
> type=0
> -size=112
> +size=120
> config=0
> sample_period=0
> sample_type=65536
> diff --git a/tools/perf/util/perf_event_attr_fprintf.c b/tools/perf/util/perf_event_attr_fprintf.c
> index d4ad3f04923a..06add607e72d 100644
> --- a/tools/perf/util/perf_event_attr_fprintf.c
> +++ b/tools/perf/util/perf_event_attr_fprintf.c
> @@ -143,6 +143,7 @@ int perf_event_attr__fprintf(FILE *fp, struct perf_event_attr *attr,
> PRINT_ATTRf(sample_regs_intr, p_hex);
> PRINT_ATTRf(aux_watermark, p_unsigned);
> PRINT_ATTRf(sample_max_stack, p_unsigned);
> + PRINT_ATTRf(aux_sample_size, p_unsigned);
>
> return ret;
> }
> diff --git a/tools/perf/util/session.c b/tools/perf/util/session.c
> index f07b8ecb91bc..eb7ffd5524dc 100644
> --- a/tools/perf/util/session.c
> +++ b/tools/perf/util/session.c
> @@ -752,6 +752,7 @@ do { \
> bswap_field_32(sample_stack_user);
> bswap_field_32(aux_watermark);
> bswap_field_16(sample_max_stack);
> + bswap_field_32(aux_sample_size);
>
> /*
> * After read_format are bitfields. Check read_format because
> --
> 2.17.1

--

- Arnaldo

\
 
 \ /
  Last update: 2019-11-21 14:58    [W:0.127 / U:10.816 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site