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i965: perf: ensure reading config IDs from sysfs isn't interrupted

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Fixes: 458468c136 "i965: Expose OA counters via INTEL_performance_query"
Signed-off-by: Lionel Landwerlin <lionel.g.landwerlin@intel.com>
Cc: <mesa-stable@lists.freedesktop.org>
Reviewed-by: Eric Engestrom <eric.engestrom@imgtec.com>
(cherry picked from commit bd9672695b)
This commit is contained in:
Lionel Landwerlin 2018-02-07 10:48:32 +00:00 • committed by Juan A. Suarez Romero
parent c6849c9314
commit c49dde7f43
1 changed files with 2 additions and 1 deletions
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3
src/mesa/drivers/dri/i965/brw_performance_query.c
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@ -1718,7 +1718,8 @@ read_file_uint64(const char *file, uint64_t *val)
fd = open(file, 0);
if (fd < 0)
return false;
n = read(fd, buf, sizeof (buf) - 1);
while ((n = read(fd, buf, sizeof (buf) - 1)) < 0 &&
errno == EINTR);
close(fd);
if (n < 0)
return false;