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authorKan Liang <kan.liang@linux.intel.com>2021-06-18 08:12:54 -0700
committerPeter Zijlstra <peterz@infradead.org>2021-06-23 18:30:55 +0200
commit1d5c7880992a06679585e7e568cc679c0c5fd4f2 (patch)
tree96c6af4ccdf804d9a0615e5440ab6870d752dbac /fs/nfs/pnfs.c
parentd18216fafecf2a3a7c2b97086892269d6ab3cd5e (diff)
downloadlinux-1d5c7880992a06679585e7e568cc679c0c5fd4f2.tar.bz2
perf/x86/intel: Fix instructions:ppp support in Sapphire Rapids
Perf errors out when sampling instructions:ppp. $ perf record -e instructions:ppp -- true Error: The sys_perf_event_open() syscall returned with 22 (Invalid argument) for event (instructions:ppp). The instruction PDIR is only available on the fixed counter 0. The event constraint has been updated to fixed0_constraint in icl_get_event_constraints(). The Sapphire Rapids codes unconditionally error out for the event which is not available on the GP counter 0. Make the instructions:ppp an exception. Fixes: 61b985e3e775 ("perf/x86/intel: Add perf core PMU support for Sapphire Rapids") Reported-by: Yasin, Ahmad <ahmad.yasin@intel.com> Signed-off-by: Kan Liang <kan.liang@linux.intel.com> Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org> Cc: stable@vger.kernel.org Link: https://lore.kernel.org/r/1624029174-122219-4-git-send-email-kan.liang@linux.intel.com
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