lkml.org 
[lkml]   [2019]   [Mar]   [5]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    /
    Date
    From
    SubjectRe: [PATCH v5 07/10] perf record: implement -z,--compression_level=n option and compression
    On Fri, Mar 01, 2019 at 06:58:32PM +0300, Alexey Budankov wrote:

    SNIP

    > +static size_t record__zstd_compress(void *data, void *dst, size_t dst_size,
    > + void *src, size_t src_size)
    > +{
    > + size_t compressed;
    > + struct perf_session *session = data;
    > + /* maximum size of record data size (2^16 - 1 - header) */
    > + const size_t max_record_size = (1 << 8 * sizeof(u16)) -

    I dont follow this calculation, could you just use PERF_SAMPLE_MAX_SIZE?

    jirka

    > + 1 - sizeof(struct compressed_event);
    > +

    SNIP

    \
     
     \ /
      Last update: 2019-03-05 13:26    [W:4.051 / U:0.228 seconds]
    ©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site