Commit f2e9d46a authored by Thomas Richter's avatar Thomas Richter Committed by Heiko Carstens
Browse files

s390/cpum_sf: Use sf_buffer_available() 



Use sf_buffer_available() consistently throughtout the code
to test for the existence of sampling buffer.
No functional change.

Signed-off-by: default avatarThomas Richter <tmricht@linux.ibm.com>
Reviewed-by: default avatarHendrik Brueckner <brueckner@linux.ibm.com>
Reviewed-by: default avatarSumanth Korikkar <sumanthk@linux.ibm.com>
Signed-off-by: default avatarHeiko Carstens <hca@linux.ibm.com>
parent de6d22cc

arch/s390/kernel/perf_cpum_sf.c

+2 −2
Original line number Diff line number Diff line
@@ -404,7 +404,7 @@ static void sfb_init_allocs(unsigned long num, struct hw_perf_event *hwc) 


static void deallocate_buffers(struct cpu_hw_sf *cpuhw)

{

	if (cpuhw->sfb.sdbt)

	if (sf_buffer_available(cpuhw))

		free_sampling_buffer(&cpuhw->sfb);

}
@@ -1793,7 +1793,7 @@ static int cpumsf_pmu_add(struct perf_event *event, int flags) 
	if (cpuhw->flags & PMU_F_IN_USE)

		return -EAGAIN;



	if (!SAMPL_DIAG_MODE(&event->hw) && !cpuhw->sfb.sdbt)

	if (!SAMPL_DIAG_MODE(&event->hw) && !sf_buffer_available(cpuhw))

		return -EINVAL;



	perf_pmu_disable(event->pmu);